[Git][ghc/ghc][wip/toolchain-selection] Windows builtin toolchain

Rodrigo Mesquita (@alt-romes) gitlab at gitlab.haskell.org
Tue Jul 11 10:35:15 UTC 2023



Rodrigo Mesquita pushed to branch wip/toolchain-selection at Glasgow Haskell Compiler / GHC


Commits:
f8689c72 by Rodrigo Mesquita at 2023-07-11T11:34:52+01:00
Windows builtin toolchain

- - - - -


10 changed files:

- default.host.target.in
- default.target.in
- hadrian/src/Rules/Generate.hs
- m4/fp_settings.m4
- m4/fp_setup_windows_toolchain.m4
- m4/prep_target_file.m4
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs
- + utils/ghc-toolchain/test
- + utils/ghc-toolchain/test.c
- + utils/ghc-toolchain/test.wasm


Changes:

=====================================
default.host.target.in
=====================================
@@ -15,7 +15,7 @@ Target
 , tgtCCompiler = Cc {ccProgram = Program {prgPath = "@CC_STAGE0@", prgFlags = @CONF_CC_OPTS_STAGE0List@}}
 , tgtCxxCompiler = Cxx {cxxProgram = Program {prgPath = "@CC_STAGE0@", prgFlags = @CONF_CXX_OPTS_STAGE0List@}}
 , tgtCPreprocessor = Cpp {cppProgram = Program {prgPath = "@CPPCmd_STAGE0@", prgFlags = @CONF_CPP_OPTS_STAGE0List@}}
-, tgtHsCPreprocessor = HsCpp {hsCppProgram = Program {prgPath = "@CC_STAGE0@", prgFlags = @SettingsHaskellCPPFlagsList@}}
+, tgtHsCPreprocessor = HsCpp {hsCppProgram = Program {prgPath = "@CC_STAGE0@", prgFlags = @HaskellCPPArgsList@}}
 , tgtCCompilerLink = CcLink
 { ccLinkProgram = Program {prgPath = "@CC_STAGE0@", prgFlags = @CONF_GCC_LINKER_OPTS_STAGE0List@}
 , ccLinkSupportsNoPie = False


=====================================
default.target.in
=====================================
@@ -12,29 +12,29 @@ Target
 , tgtUnregisterised = @UnregisterisedBool@
 , tgtTablesNextToCode = @TablesNextToCodeBool@
 , tgtUseLibffiForAdjustors = @UseLibffiForAdjustorsBool@
-, tgtCCompiler = Cc {ccProgram = Program {prgPath = "@SettingsCCompilerCommand@", prgFlags = @SettingsCCompilerFlagsList@}}
-, tgtCxxCompiler = Cxx {cxxProgram = Program {prgPath = "@SettingsCxxCompilerCommand@", prgFlags = @SettingsCxxCompilerFlagsList@}}
-, tgtCPreprocessor = Cpp {cppProgram = Program {prgPath = "@SettingsCPPCommand@", prgFlags = @SettingsCPPFlagsList@}}
-, tgtHsCPreprocessor = HsCpp {hsCppProgram = Program {prgPath = "@SettingsHaskellCPPCommand@", prgFlags = @SettingsHaskellCPPFlagsList@}}
+, tgtCCompiler = Cc {ccProgram = Program {prgPath = "@CC@", prgFlags = @CONF_CC_OPTS_STAGE2List@}}
+, tgtCxxCompiler = Cxx {cxxProgram = Program {prgPath = "@CXX@", prgFlags = @CONF_CXX_OPTS_STAGE2List@}}
+, tgtCPreprocessor = Cpp {cppProgram = Program {prgPath = "@CPPCmd@", prgFlags = @CONF_CPP_OPTS_STAGE2List@}}
+, tgtHsCPreprocessor = HsCpp {hsCppProgram = Program {prgPath = "@HaskellCPPCmd@", prgFlags = @HaskellCPPArgsList@}}
 , tgtCCompilerLink = CcLink
-{ ccLinkProgram = Program {prgPath = "@SettingsCCompilerCommand@", prgFlags = @SettingsCCompilerLinkFlagsList@}
-, ccLinkSupportsNoPie = @SettingsCCompilerSupportsNoPieBool@
+{ ccLinkProgram = Program {prgPath = "@CC@", prgFlags = @CONF_GCC_LINKER_OPTS_STAGE2List@}
+, ccLinkSupportsNoPie = @CONF_GCC_SUPPORTS_NO_PIEBool@
 , ccLinkSupportsCompactUnwind = @LdHasNoCompactUnwindBool@
 , ccLinkSupportsFilelist = @LdHasFilelistBool@
 , ccLinkIsGnu = @LdIsGNULdBool@
 }
 
 , tgtAr = Ar
-{ arMkArchive = Program {prgPath = "@SettingsArCommand@", prgFlags = @ArArgsList@}
+{ arMkArchive = Program {prgPath = "@ArCmd@", prgFlags = @ArArgsList@}
 , arIsGnu = @ArIsGNUArBool@
 , arSupportsAtFile = @ArSupportsAtFileBool@
 , arSupportsDashL = @ArSupportsDashLBool@
 , arNeedsRanlib = @ArNeedsRanLibBool@
 }
 
-, tgtRanlib = Just (Ranlib {ranlibProgram = Program {prgPath = "@SettingsRanlibCommand@", prgFlags = []}})
+, tgtRanlib = Just (Ranlib {ranlibProgram = Program {prgPath = "@RanlibCmd@", prgFlags = []}})
 , tgtNm = Nm {nmProgram = Program {prgPath = "@NmCmd@", prgFlags = []}}
-, tgtMergeObjs = Just (MergeObjs {mergeObjsProgram = Program {prgPath = "@SettingsMergeObjectsCommand@", prgFlags = @SettingsMergeObjectsFlagsList@}, mergeObjsSupportsResponseFiles = @MergeObjsSupportsResponseFilesBool@})
+, tgtMergeObjs = Just (MergeObjs {mergeObjsProgram = Program {prgPath = "@MergeObjsCmd@", prgFlags = @MergeObjsArgsList@}, mergeObjsSupportsResponseFiles = @MergeObjsSupportsResponseFilesBool@})
 , tgtDllwrap = @DllWrapCmdMaybeProg@
 , tgtWindres = @WindresCmdMaybeProg@
 }


=====================================
hadrian/src/Rules/Generate.hs
=====================================
@@ -6,6 +6,7 @@ module Rules.Generate (
     ) where
 
 import qualified Data.Set as Set
+import qualified Data.Text as T
 import Base
 import qualified Context
 import Expression
@@ -448,45 +449,45 @@ generateSettings :: Expr String
 generateSettings = do
     ctx <- getContext
     settings <- traverse sequence $
-        [ ("C compiler command",   queryTarget ccPath)
-        , ("C compiler flags",     queryTarget ccFlags)
-        , ("C++ compiler command", queryTarget cxxPath)
-        , ("C++ compiler flags",   queryTarget cxxFlags)
-        , ("C compiler link flags",       queryTarget clinkFlags)
-        , ("C compiler supports -no-pie", queryTarget linkSupportsNoPie)
-        , ("CPP command",         queryTarget cppPath)
-        , ("CPP flags",           queryTarget cppFlags)
-        , ("Haskell CPP command", queryTarget hsCppPath)
-        , ("Haskell CPP flags",   queryTarget hsCppFlags)
-        , ("ld supports compact unwind", queryTarget linkSupportsCompactUnwind)
-        , ("ld supports filelist",       queryTarget linkSupportsFilelist)
-        , ("ld is GNU ld",               queryTarget linkIsGnu)
-        , ("Merge objects command", queryTarget mergeObjsPath)
-        , ("Merge objects flags", queryTarget mergeObjsFlags)
-        , ("Merge objects supports response files", queryTarget mergeObjsSupportsResponseFiles')
-        , ("ar command",          queryTarget arPath)
-        , ("ar flags",            queryTarget arFlags)
-        , ("ar supports at file", queryTarget arSupportsAtFile')
-        , ("ar supports -L",      queryTarget arSupportsDashL')
-        , ("ranlib command", queryTarget ranlibPath)
+        [ ("C compiler command",   queryTarget' ccPath)
+        , ("C compiler flags",     queryTarget' ccFlags)
+        , ("C++ compiler command", queryTarget' cxxPath)
+        , ("C++ compiler flags",   queryTarget' cxxFlags)
+        , ("C compiler link flags",       queryTarget' clinkFlags)
+        , ("C compiler supports -no-pie", queryTarget' linkSupportsNoPie)
+        , ("CPP command",         queryTarget' cppPath)
+        , ("CPP flags",           queryTarget' cppFlags)
+        , ("Haskell CPP command", queryTarget' hsCppPath)
+        , ("Haskell CPP flags",   queryTarget' hsCppFlags)
+        , ("ld supports compact unwind", queryTarget' linkSupportsCompactUnwind)
+        , ("ld supports filelist",       queryTarget' linkSupportsFilelist)
+        , ("ld is GNU ld",               queryTarget' linkIsGnu)
+        , ("Merge objects command", queryTarget' mergeObjsPath)
+        , ("Merge objects flags", queryTarget' mergeObjsFlags)
+        , ("Merge objects supports response files", queryTarget' mergeObjsSupportsResponseFiles')
+        , ("ar command",          queryTarget' arPath)
+        , ("ar flags",            queryTarget' arFlags)
+        , ("ar supports at file", queryTarget' arSupportsAtFile')
+        , ("ar supports -L",      queryTarget' arSupportsDashL')
+        , ("ranlib command", queryTarget' ranlibPath)
         , ("otool command", expr $ settingsFileSetting ToolchainSetting_OtoolCommand)
         , ("install_name_tool command", expr $ settingsFileSetting ToolchainSetting_InstallNameToolCommand)
         , ("touch command", expr $ settingsFileSetting ToolchainSetting_TouchCommand)
-        , ("dllwrap command", queryTarget (maybe "/bin/false" prgPath . tgtDllwrap)) -- ROMES:TODO: /bin/false is not available on many distributions by default, but we keep it as it were before the ghc-toolchain patch
-        , ("windres command", queryTarget (maybe "/bin/false" prgPath . tgtWindres))
+        , ("dllwrap command", queryTarget' (maybe "/bin/false" prgPath . tgtDllwrap)) -- TODO: /bin/false is not available on many distributions by default, but we keep it as it were before the ghc-toolchain patch. Fix-me.
+        , ("windres command", queryTarget' (maybe "/bin/false" prgPath . tgtWindres))
         , ("unlit command", ("$topdir/bin/" <>) <$> expr (programName (ctx { Context.package = unlit })))
         , ("cross compiling", expr $ yesNo <$> flag CrossCompiling)
-        , ("target platform string", queryTarget targetPlatformTriple)
-        , ("target os",        queryTarget (show . archOS_OS . tgtArchOs))
-        , ("target arch",      queryTarget (show . archOS_arch . tgtArchOs))
-        , ("target word size", queryTarget wordSize)
-        , ("target word big endian",       queryTarget isBigEndian)
-        , ("target has GNU nonexec stack", queryTarget (yesNo . Toolchain.tgtSupportsGnuNonexecStack))
-        , ("target has .ident directive",  queryTarget (yesNo . Toolchain.tgtSupportsIdentDirective))
-        , ("target has subsections via symbols", queryTarget (yesNo . Toolchain.tgtSupportsSubsectionsViaSymbols))
+        , ("target platform string", queryTarget' targetPlatformTriple)
+        , ("target os",        queryTarget' (show . archOS_OS . tgtArchOs))
+        , ("target arch",      queryTarget' (show . archOS_arch . tgtArchOs))
+        , ("target word size", queryTarget' wordSize)
+        , ("target word big endian",       queryTarget' isBigEndian)
+        , ("target has GNU nonexec stack", queryTarget' (yesNo . Toolchain.tgtSupportsGnuNonexecStack))
+        , ("target has .ident directive",  queryTarget' (yesNo . Toolchain.tgtSupportsIdentDirective))
+        , ("target has subsections via symbols", queryTarget' (yesNo . Toolchain.tgtSupportsSubsectionsViaSymbols))
         , ("target has libm", expr $  lookupSystemConfig "target-has-libm")
-        , ("Unregisterised", queryTarget (yesNo . tgtUnregisterised))
-        , ("LLVM target", queryTarget tgtLlvmTarget)
+        , ("Unregisterised", queryTarget' (yesNo . tgtUnregisterised))
+        , ("LLVM target", queryTarget' tgtLlvmTarget)
         , ("LLVM llc command", expr $ settingsFileSetting ToolchainSetting_LlcCommand)
         , ("LLVM opt command", expr $ settingsFileSetting ToolchainSetting_OptCommand)
         , ("Use inplace MinGW toolchain", expr $ settingsFileSetting ToolchainSetting_DistroMinGW)
@@ -494,8 +495,8 @@ generateSettings = do
         , ("Use interpreter", expr $ yesNo <$> ghcWithInterpreter)
         , ("Support SMP", expr $ yesNo <$> targetSupportsSMP)
         , ("RTS ways", unwords . map show . Set.toList <$> getRtsWays)
-        , ("Tables next to code", queryTarget (yesNo . tgtTablesNextToCode))
-        , ("Leading underscore",  queryTarget (yesNo . tgtSymbolsHaveLeadingUnderscore))
+        , ("Tables next to code", queryTarget' (yesNo . tgtTablesNextToCode))
+        , ("Leading underscore",  queryTarget' (yesNo . tgtSymbolsHaveLeadingUnderscore))
         , ("Use LibFFI", expr $ yesNo <$> useLibffiForAdjustors)
         , ("RTS expects libdw", yesNo <$> getFlag UseLibdw)
         ]
@@ -531,6 +532,19 @@ generateSettings = do
     wordSize    = show . wordSize2Bytes . tgtWordSize
     mergeObjsSupportsResponseFiles' = maybe "NO" (yesNo . mergeObjsSupportsResponseFiles) . tgtMergeObjs
 
+    -- Like @'queryTarget'@ specialized to String, but replace occurrences of
+    -- @topDirectory </> inplace/mingw@ with @$$tooldir/mingw@ in the resulting string
+    queryTarget' :: (Toolchain.Target -> String) -> Expr String
+    queryTarget' f = do
+      topdir <- expr $ topDirectory
+      queryTarget (\t -> substTooldir topdir (archOS_OS $ tgtArchOs t) (f t))
+      where
+        substTooldir :: String -> OS -> String -> String
+        substTooldir topdir OSMinGW32 s
+          = T.unpack $
+            T.replace (T.pack $ topdir </> "inplace" </> "mingw") (T.pack "$$tooldir/mingw") (T.pack s)
+        substTooldir _ _ s = s
+
 
 -- | Generate @Config.hs@ files.
 generateConfigHs :: Expr String


=====================================
m4/fp_settings.m4
=====================================
@@ -1,3 +1,14 @@
+# SUBST_TOOLDIR
+# ----------------------------------
+# $1 - the variable where to search for occurrences of the path to the
+# distributed mingw, and update by substituting said occurrences by
+# the literal '$$tooldir/mingw'
+AC_DEFUN([SUBST_TOOLDIR],
+[
+    dnl See Note [tooldir: How GHC finds mingw on Windows]
+    $1=`echo $1 | sed 's%'"$mingwpath"'%$$tooldir/mingw%'`
+])
+
 # FP_SETTINGS
 # ----------------------------------
 # Set the variables used in the settings file
@@ -5,74 +16,69 @@ AC_DEFUN([FP_SETTINGS],
 [
     SettingsUseDistroMINGW="$EnableDistroToolchain"
 
-    if test "$windows" = YES -a "$EnableDistroToolchain" = "NO"; then
-        # Handle the Windows toolchain installed in FP_SETUP_WINDOWS_TOOLCHAIN.
-        # See Note [tooldir: How GHC finds mingw on Windows]
-        mingw_bin_prefix='$$tooldir/mingw/bin/'
-        SettingsCCompilerCommand="${mingw_bin_prefix}clang.exe"
-        SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2 -I\$\$tooldir/mingw/include"
-        SettingsCxxCompilerCommand="${mingw_bin_prefix}clang++.exe"
-        SettingsCxxCompilerFlags="$CONF_CXX_OPTS_STAGE2 -I\$\$tooldir/mingw/include"
-        SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2 -L\$\$tooldir/mingw/lib -L\$\$tooldir/mingw/x86_64-w64-mingw32/lib"
-        SettingsCPPCommand="${mingw_bin_prefix}clang.exe"
-        SettingsCPPFlags="$CONF_CPP_OPTS_STAGE2 -I\$\$tooldir/mingw/include"
-        SettingsHaskellCPPCommand="${mingw_bin_prefix}clang.exe"
-        SettingsHaskellCPPFlags="$HaskellCPPArgs -I\$\$tooldir/mingw/include"
-        # LLD does not support object merging (#21068)
-        SettingsMergeObjectsCommand=""
-        SettingsMergeObjectsFlags=""
-        SettingsArCommand="${mingw_bin_prefix}llvm-ar.exe"
-        SettingsRanlibCommand="${mingw_bin_prefix}llvm-ranlib.exe"
-        SettingsDllWrapCommand="${mingw_bin_prefix}llvm-dllwrap.exe"
-        SettingsWindresCommand="${mingw_bin_prefix}llvm-windres.exe"
-        SettingsTouchCommand='$$topdir/bin/touchy.exe'
+    SettingsCCompilerCommand="$CC"
+    SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
+    SettingsCxxCompilerCommand="$CXX"
+    SettingsCxxCompilerFlags="$CONF_CXX_OPTS_STAGE2"
+    SettingsCPPCommand="$CPPCmd"
+    SettingsCPPFlags="$CONF_CPP_OPTS_STAGE2"
+    SettingsHaskellCPPCommand="$HaskellCPPCmd"
+    SettingsHaskellCPPFlags="$HaskellCPPArgs"
+    SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2"
+    SettingsArCommand="$ArCmd"
+    SettingsRanlibCommand="$RanlibCmd"
+    SettingsMergeObjectsCommand="$MergeObjsCmd"
+    SettingsMergeObjectsFlags="$MergeObjsArgs"
 
+    if test -z "$DllWrapCmd"; then
+        SettingsDllWrapCommand="/bin/false"
     else
-        # This case handles the "normal" platforms (e.g. not Windows) where we
-        # don't provide the toolchain.
-
-        SettingsCCompilerCommand="$CC"
-        SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
-        SettingsCxxCompilerCommand="$CXX"
-        SettingsCxxCompilerFlags="$CONF_CXX_OPTS_STAGE2"
-        SettingsCPPCommand="$CPPCmd"
-        SettingsCPPFlags="$CONF_CPP_OPTS_STAGE2"
-        SettingsHaskellCPPCommand="$HaskellCPPCmd"
-        SettingsHaskellCPPFlags="$HaskellCPPArgs"
-        SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2"
-        SettingsArCommand="$ArCmd"
-        SettingsRanlibCommand="$RanlibCmd"
-        SettingsMergeObjectsCommand="$MergeObjsCmd"
-        SettingsMergeObjectsFlags="$MergeObjsArgs"
+        SettingsDllWrapCommand="$DllWrapCmd"
+    fi
+    if test -z "$WindresCmd"; then
+        SettingsWindresCommand="/bin/false"
+    else
+        SettingsWindresCommand="$WindresCmd"
+    fi
 
-        if test -z "$DllWrapCmd"; then
-            SettingsDllWrapCommand="/bin/false"
-        else
-            SettingsDllWrapCommand="$DllWrapCmd"
-        fi
-        if test -z "$WindresCmd"; then
-            SettingsWindresCommand="/bin/false"
-        else
-            SettingsWindresCommand="$WindresCmd"
-        fi
+    if test "$HostOS" = "mingw32"; then
+        SettingsTouchCommand='$$topdir/bin/touchy.exe'
+    else
+        SettingsTouchCommand='touch'
+    fi
 
-        if test "$HostOS" = "mingw32"; then
-            SettingsTouchCommand='$$topdir/bin/touchy.exe'
-        else
-            SettingsTouchCommand='touch'
-        fi
+    if test "$EnableDistroToolchain" = "YES"; then
+        # If the user specified --enable-distro-toolchain then we just use the
+        # executable names, not paths.
+        SettingsCCompilerCommand="$(basename $SettingsCCompilerCommand)"
+        SettingsHaskellCPPCommand="$(basename $SettingsHaskellCPPCommand)"
+        SettingsLdCommand="$(basename $SettingsLdCommand)"
+        SettingsMergeObjectsCommand="$(basename $SettingsMergeObjectsCommand)"
+        SettingsArCommand="$(basename $SettingsArCommand)"
+        SettingsDllWrapCommand="$(basename $SettingsDllWrapCommand)"
+        SettingsWindresCommand="$(basename $SettingsWindresCommand)"
+    fi
 
-        if test "$EnableDistroToolchain" = "YES"; then
-            # If the user specified --enable-distro-toolchain then we just use the
-            # executable names, not paths.
-            SettingsCCompilerCommand="$(basename $SettingsCCompilerCommand)"
-            SettingsHaskellCPPCommand="$(basename $SettingsHaskellCPPCommand)"
-            SettingsLdCommand="$(basename $SettingsLdCommand)"
-            SettingsMergeObjectsCommand="$(basename $SettingsMergeObjectsCommand)"
-            SettingsArCommand="$(basename $SettingsArCommand)"
-            SettingsDllWrapCommand="$(basename $SettingsDllWrapCommand)"
-            SettingsWindresCommand="$(basename $SettingsWindresCommand)"
-        fi
+    if test "$windows" = YES -a "$EnableDistroToolchain" = "NO"; then
+        # Handle the Windows toolchain installed in FP_SETUP_WINDOWS_TOOLCHAIN.
+        # We need to issue a substitution to use $$tooldir,
+        # See Note [tooldir: How GHC finds mingw on Windows]
+        SUBST_TOOLDIR([SettingsCCompilerCommand])
+        SUBST_TOOLDIR([SettingsCCompilerFlags])
+        SUBST_TOOLDIR([SettingsCxxCompilerCommand])
+        SUBST_TOOLDIR([SettingsCxxCompilerFlags])
+        SUBST_TOOLDIR([SettingsCCompilerLinkFlags])
+        SUBST_TOOLDIR([SettingsCPPCommand])
+        SUBST_TOOLDIR([SettingsCPPFlags])
+        SUBST_TOOLDIR([SettingsHaskellCPPCommand])
+        SUBST_TOOLDIR([SettingsHaskellCPPFlags])
+        SUBST_TOOLDIR([SettingsMergeObjectsCommand])
+        SUBST_TOOLDIR([SettingsMergeObjectsFlags])
+        SUBST_TOOLDIR([SettingsArCommand])
+        SUBST_TOOLDIR([SettingsRanlibCommand])
+        SUBST_TOOLDIR([SettingsDllWrapCommand])
+        SUBST_TOOLDIR([SettingsWindresCommand])
+        SettingsTouchCommand='$$topdir/bin/touchy.exe'
     fi
 
     # LLVM backend tools


=====================================
m4/fp_setup_windows_toolchain.m4
=====================================
@@ -72,13 +72,17 @@ AC_DEFUN([FP_SETUP_WINDOWS_TOOLCHAIN],[
     set_up_tarballs
 
     # N.B. The parameters which get plopped in the `settings` file used by the
-    # resulting compiler are computed in `FP_SETTINGS`.
+    # resulting compiler are computed in `FP_SETTINGS`. Specifically, we use
+    # $$topdir-relative paths instead of fullpaths to the toolchain, by replacing
+    # occurrences of $hardtop/inplace/mingw with $$tooldir/mingw
 
     # Our Windows toolchain is based around Clang and LLD. We use compiler-rt
     # for the runtime, libc++ and libc++abi for the C++ standard library
     # implementation, and libunwind for C++ unwinding.
     mingwbin="$hardtop/inplace/mingw/bin/"
-    mingwlib="$hardtop/inplace/mingw/lib/" # Seems to be unused
+    mingwlib="$hardtop/inplace/mingw/lib"
+    mingwinclude="$hardtop/inplace/mingw/include"
+    mingwpath="$hardtop/inplace/mingw"
 
     CC="${mingwbin}clang.exe"
     CXX="${mingwbin}clang++.exe"
@@ -87,17 +91,22 @@ AC_DEFUN([FP_SETUP_WINDOWS_TOOLCHAIN],[
     # necessary to ensure correct behavior when MinGW-w64 headers are in the
     # header include path (#22159).
     cflags="--rtlib=compiler-rt -D_UCRT"
-    CFLAGS="$cflags"
-    CONF_CC_OPTS_STAGE1="$cflags"
-    CONF_CC_OPTS_STAGE2="$cflags"
+    CFLAGS="$cflags -I$mingwinclude"
+    CONF_CC_OPTS_STAGE1="$cflags -I$mingwinclude"
+    CONF_CC_OPTS_STAGE2="$cflags -I$mingwinclude"
 
     cxxflags=""
-    CXXFLAGS="$cxxflags"
-    CONF_CXX_OPTS_STAGE1="$cxxflags"
-    CONF_CXX_OPTS_STAGE2="$cxxflags"
+    CXXFLAGS="$cxxflags -I$mingwinclude"
+    CONF_CXX_OPTS_STAGE1="$cxxflags -I$mingwinclude"
+    CONF_CXX_OPTS_STAGE2="$cxxflags -I$mingwinclude"
 
-    CONF_GCC_LINKER_OPTS_STAGE1="-fuse-ld=lld $cflags"
-    CONF_GCC_LINKER_OPTS_STAGE2="-fuse-ld=lld $cflags"
+    CONF_CPP_OPTS_STAGE1="$CONF_CPP_OPTS_STAGE1 -I$mingwinclude"
+    CONF_CPP_OPTS_STAGE2="$CONF_CPP_OPTS_STAGE2 -I$mingwinclude"
+
+    HaskellCPPArgs="$HaskellCPPArgs -I$mingwinclude"
+
+    CONF_GCC_LINKER_OPTS_STAGE1="-fuse-ld=lld $cflags -L$mingwlib -L$hardtop/inplace/mingw/x86_64-w64-mingw32/lib"
+    CONF_GCC_LINKER_OPTS_STAGE2="-fuse-ld=lld $cflags -L$mingwlib -L$hardtop/inplace/mingw/x86_64-w64-mingw32/lib"
 
     # N.BOn Windows we can't easily dynamically-link against libc++ since there is
     # no RPATH support, meaning that the loader will have no way of finding our


=====================================
m4/prep_target_file.m4
=====================================
@@ -107,13 +107,15 @@ AC_DEFUN([PREP_LIST],[
 # Eventually: PREP_BUILD_TARGET_FILE, PREP_HOST_TARGET_FILE, PREP_TARGET_TARGET_FILE
 # Prepares required substitutions to generate the target file
 AC_DEFUN([PREP_TARGET_FILE],[
+
+    dnl Target target
     PREP_BOOLEAN([MergeObjsSupportsResponseFiles])
     PREP_BOOLEAN([TargetHasGnuNonexecStack])
     PREP_BOOLEAN([LeadingUnderscore])
     PREP_BOOLEAN([ArSupportsAtFile])
     PREP_BOOLEAN([ArSupportsDashL])
     PREP_BOOLEAN([TargetHasIdentDirective])
-    PREP_BOOLEAN([SettingsCCompilerSupportsNoPie])
+    PREP_BOOLEAN([CONF_GCC_SUPPORTS_NO_PIE])
     PREP_BOOLEAN([LdHasFilelist])
     PREP_BOOLEAN([LdIsGNULd])
     PREP_BOOLEAN([LdHasNoCompactUnwind])
@@ -124,19 +126,19 @@ AC_DEFUN([PREP_TARGET_FILE],[
     PREP_BOOLEAN([ArIsGNUAr])
     PREP_BOOLEAN([ArNeedsRanLib])
     PREP_NOT_BOOLEAN([CrossCompiling])
-    PREP_LIST([SettingsMergeObjectsFlags])
+    PREP_LIST([MergeObjsArgs])
     PREP_LIST([ArArgs])
-    PREP_LIST([SettingsCCompilerLinkFlags])
-    PREP_LIST([SettingsHaskellCPPFlags])
+    PREP_LIST([CONF_GCC_LINKER_OPTS_STAGE2])
+    PREP_LIST([HaskellCPPArgs])
     PREP_MAYBE_SIMPLE_PROGRAM([DllWrapCmd])
     PREP_MAYBE_SIMPLE_PROGRAM([WindresCmd])
     PREP_MAYBE_STRING([TargetVendor_CPP])
     PREP_MAYBE_STRING([HostVendor_CPP])
-    PREP_LIST([SettingsCPPFlags])
-    PREP_LIST([SettingsCxxCompilerFlags])
-    PREP_LIST([SettingsCCompilerFlags])
+    PREP_LIST([CONF_CPP_OPTS_STAGE2])
+    PREP_LIST([CONF_CXX_OPTS_STAGE2])
+    PREP_LIST([CONF_CC_OPTS_STAGE2])
 
-    dnl Host-target
+    dnl Host target
     PREP_BOOLEAN([ArSupportsAtFile_STAGE0])
     PREP_BOOLEAN([ArSupportsDashL_STAGE0])
     PREP_LIST([AR_OPTS_STAGE0])


=====================================
utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs
=====================================
@@ -39,7 +39,7 @@ findCc llvmTarget progOpt = checking "for C compiler" $ do
     -- there's a more optimal one
     ccProgram' <- findProgram "C compiler" progOpt ["gcc", "clang", "cc"]
 
-                    -- we inline the windows check here because we need Cc to call parseTriple
+                    -- we inline the is-windows check here because we need Cc to call parseTriple
     let ccProgram = if "mingw32" `isInfixOf` llvmTarget && takeBaseName (prgPath ccProgram') == "clang"
          then
            -- Signal that we are linking against UCRT with the _UCRT macro. This is


=====================================
utils/ghc-toolchain/test
=====================================
@@ -0,0 +1,1672 @@
+// include: shell.js
+// The Module object: Our interface to the outside world. We import
+// and export values on it. There are various ways Module can be used:
+// 1. Not defined. We create it here
+// 2. A function parameter, function(Module) { ..generated code.. }
+// 3. pre-run appended it, var Module = {}; ..generated code..
+// 4. External script tag defines var Module.
+// We need to check if Module already exists (e.g. case 3 above).
+// Substitution will be replaced with actual code on later stage of the build,
+// this way Closure Compiler will not mangle it (e.g. case 4. above).
+// Note that if you want to run closure, and also to use Module
+// after the generated code, you will need to define   var Module = {};
+// before the code. Then that object will be used in the code, and you
+// can continue to use Module afterwards as well.
+var Module = typeof Module != 'undefined' ? Module : {};
+
+// --pre-jses are emitted after the Module integration code, so that they can
+// refer to Module (if they choose; they can also define Module)
+
+
+// Sometimes an existing Module object exists with properties
+// meant to overwrite the default module functionality. Here
+// we collect those properties and reapply _after_ we configure
+// the current environment's defaults to avoid having to be so
+// defensive during initialization.
+var moduleOverrides = Object.assign({}, Module);
+
+var arguments_ = [];
+var thisProgram = './this.program';
+var quit_ = (status, toThrow) => {
+  throw toThrow;
+};
+
+// Determine the runtime environment we are in. You can customize this by
+// setting the ENVIRONMENT setting at compile time (see settings.js).
+
+// Attempt to auto-detect the environment
+var ENVIRONMENT_IS_WEB = typeof window == 'object';
+var ENVIRONMENT_IS_WORKER = typeof importScripts == 'function';
+// N.b. Electron.js environment is simultaneously a NODE-environment, but
+// also a web environment.
+var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string';
+var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;
+
+if (Module['ENVIRONMENT']) {
+  throw new Error('Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -sENVIRONMENT=web or -sENVIRONMENT=node)');
+}
+
+// `/` should be present at the end if `scriptDirectory` is not empty
+var scriptDirectory = '';
+function locateFile(path) {
+  if (Module['locateFile']) {
+    return Module['locateFile'](path, scriptDirectory);
+  }
+  return scriptDirectory + path;
+}
+
+// Hooks that are implemented differently in different runtime environments.
+var read_,
+    readAsync,
+    readBinary,
+    setWindowTitle;
+
+if (ENVIRONMENT_IS_NODE) {
+  if (typeof process == 'undefined' || !process.release || process.release.name !== 'node') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');
+
+  var nodeVersion = process.versions.node;
+  var numericVersion = nodeVersion.split('.').slice(0, 3);
+  numericVersion = (numericVersion[0] * 10000) + (numericVersion[1] * 100) + (numericVersion[2].split('-')[0] * 1);
+  var minVersion = 160000;
+  if (numericVersion < 160000) {
+    throw new Error('This emscripten-generated code requires node v16.0.0 (detected v' + nodeVersion + ')');
+  }
+
+  // `require()` is no-op in an ESM module, use `createRequire()` to construct
+  // the require()` function.  This is only necessary for multi-environment
+  // builds, `-sENVIRONMENT=node` emits a static import declaration instead.
+  // TODO: Swap all `require()`'s with `import()`'s?
+  // These modules will usually be used on Node.js. Load them eagerly to avoid
+  // the complexity of lazy-loading.
+  var fs = require('fs');
+  var nodePath = require('path');
+
+  if (ENVIRONMENT_IS_WORKER) {
+    scriptDirectory = nodePath.dirname(scriptDirectory) + '/';
+  } else {
+    scriptDirectory = __dirname + '/';
+  }
+
+// include: node_shell_read.js
+read_ = (filename, binary) => {
+  // We need to re-wrap `file://` strings to URLs. Normalizing isn't
+  // necessary in that case, the path should already be absolute.
+  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
+  return fs.readFileSync(filename, binary ? undefined : 'utf8');
+};
+
+readBinary = (filename) => {
+  var ret = read_(filename, true);
+  if (!ret.buffer) {
+    ret = new Uint8Array(ret);
+  }
+  assert(ret.buffer);
+  return ret;
+};
+
+readAsync = (filename, onload, onerror, binary = true) => {
+  // See the comment in the `read_` function.
+  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
+  fs.readFile(filename, binary ? undefined : 'utf8', (err, data) => {
+    if (err) onerror(err);
+    else onload(binary ? data.buffer : data);
+  });
+};
+// end include: node_shell_read.js
+  if (!Module['thisProgram'] && process.argv.length > 1) {
+    thisProgram = process.argv[1].replace(/\\/g, '/');
+  }
+
+  arguments_ = process.argv.slice(2);
+
+  if (typeof module != 'undefined') {
+    module['exports'] = Module;
+  }
+
+  process.on('uncaughtException', (ex) => {
+    // suppress ExitStatus exceptions from showing an error
+    if (ex !== 'unwind' && !(ex instanceof ExitStatus) && !(ex.context instanceof ExitStatus)) {
+      throw ex;
+    }
+  });
+
+  quit_ = (status, toThrow) => {
+    process.exitCode = status;
+    throw toThrow;
+  };
+
+  Module['inspect'] = () => '[Emscripten Module object]';
+
+} else
+if (ENVIRONMENT_IS_SHELL) {
+
+  if ((typeof process == 'object' && typeof require === 'function') || typeof window == 'object' || typeof importScripts == 'function') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');
+
+  if (typeof read != 'undefined') {
+    read_ = (f) => {
+      return read(f);
+    };
+  }
+
+  readBinary = (f) => {
+    let data;
+    if (typeof readbuffer == 'function') {
+      return new Uint8Array(readbuffer(f));
+    }
+    data = read(f, 'binary');
+    assert(typeof data == 'object');
+    return data;
+  };
+
+  readAsync = (f, onload, onerror) => {
+    setTimeout(() => onload(readBinary(f)));
+  };
+
+  if (typeof clearTimeout == 'undefined') {
+    globalThis.clearTimeout = (id) => {};
+  }
+
+  if (typeof setTimeout == 'undefined') {
+    // spidermonkey lacks setTimeout but we use it above in readAsync.
+    globalThis.setTimeout = (f) => (typeof f == 'function') ? f() : abort();
+  }
+
+  if (typeof scriptArgs != 'undefined') {
+    arguments_ = scriptArgs;
+  } else if (typeof arguments != 'undefined') {
+    arguments_ = arguments;
+  }
+
+  if (typeof quit == 'function') {
+    quit_ = (status, toThrow) => {
+      // Unlike node which has process.exitCode, d8 has no such mechanism. So we
+      // have no way to set the exit code and then let the program exit with
+      // that code when it naturally stops running (say, when all setTimeouts
+      // have completed). For that reason, we must call `quit` - the only way to
+      // set the exit code - but quit also halts immediately.  To increase
+      // consistency with node (and the web) we schedule the actual quit call
+      // using a setTimeout to give the current stack and any exception handlers
+      // a chance to run.  This enables features such as addOnPostRun (which
+      // expected to be able to run code after main returns).
+      setTimeout(() => {
+        if (!(toThrow instanceof ExitStatus)) {
+          let toLog = toThrow;
+          if (toThrow && typeof toThrow == 'object' && toThrow.stack) {
+            toLog = [toThrow, toThrow.stack];
+          }
+          err(`exiting due to exception: ${toLog}`);
+        }
+        quit(status);
+      });
+      throw toThrow;
+    };
+  }
+
+  if (typeof print != 'undefined') {
+    // Prefer to use print/printErr where they exist, as they usually work better.
+    if (typeof console == 'undefined') console = /** @type{!Console} */({});
+    console.log = /** @type{!function(this:Console, ...*): undefined} */ (print);
+    console.warn = console.error = /** @type{!function(this:Console, ...*): undefined} */ (typeof printErr != 'undefined' ? printErr : print);
+  }
+
+} else
+
+// Note that this includes Node.js workers when relevant (pthreads is enabled).
+// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
+// ENVIRONMENT_IS_NODE.
+if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
+  if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
+    scriptDirectory = self.location.href;
+  } else if (typeof document != 'undefined' && document.currentScript) { // web
+    scriptDirectory = document.currentScript.src;
+  }
+  // blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
+  // otherwise, slice off the final part of the url to find the script directory.
+  // if scriptDirectory does not contain a slash, lastIndexOf will return -1,
+  // and scriptDirectory will correctly be replaced with an empty string.
+  // If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
+  // they are removed because they could contain a slash.
+  if (scriptDirectory.indexOf('blob:') !== 0) {
+    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf('/')+1);
+  } else {
+    scriptDirectory = '';
+  }
+
+  if (!(typeof window == 'object' || typeof importScripts == 'function')) throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');
+
+  // Differentiate the Web Worker from the Node Worker case, as reading must
+  // be done differently.
+  {
+// include: web_or_worker_shell_read.js
+read_ = (url) => {
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', url, false);
+      xhr.send(null);
+      return xhr.responseText;
+  }
+
+  if (ENVIRONMENT_IS_WORKER) {
+    readBinary = (url) => {
+        var xhr = new XMLHttpRequest();
+        xhr.open('GET', url, false);
+        xhr.responseType = 'arraybuffer';
+        xhr.send(null);
+        return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
+    };
+  }
+
+  readAsync = (url, onload, onerror) => {
+    var xhr = new XMLHttpRequest();
+    xhr.open('GET', url, true);
+    xhr.responseType = 'arraybuffer';
+    xhr.onload = () => {
+      if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
+        onload(xhr.response);
+        return;
+      }
+      onerror();
+    };
+    xhr.onerror = onerror;
+    xhr.send(null);
+  }
+
+// end include: web_or_worker_shell_read.js
+  }
+
+  setWindowTitle = (title) => document.title = title;
+} else
+{
+  throw new Error('environment detection error');
+}
+
+var out = Module['print'] || console.log.bind(console);
+var err = Module['printErr'] || console.error.bind(console);
+
+// Merge back in the overrides
+Object.assign(Module, moduleOverrides);
+// Free the object hierarchy contained in the overrides, this lets the GC
+// reclaim data used e.g. in memoryInitializerRequest, which is a large typed array.
+moduleOverrides = null;
+checkIncomingModuleAPI();
+
+// Emit code to handle expected values on the Module object. This applies Module.x
+// to the proper local x. This has two benefits: first, we only emit it if it is
+// expected to arrive, and second, by using a local everywhere else that can be
+// minified.
+
+if (Module['arguments']) arguments_ = Module['arguments'];legacyModuleProp('arguments', 'arguments_');
+
+if (Module['thisProgram']) thisProgram = Module['thisProgram'];legacyModuleProp('thisProgram', 'thisProgram');
+
+if (Module['quit']) quit_ = Module['quit'];legacyModuleProp('quit', 'quit_');
+
+// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
+// Assertions on removed incoming Module JS APIs.
+assert(typeof Module['memoryInitializerPrefixURL'] == 'undefined', 'Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead');
+assert(typeof Module['pthreadMainPrefixURL'] == 'undefined', 'Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead');
+assert(typeof Module['cdInitializerPrefixURL'] == 'undefined', 'Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead');
+assert(typeof Module['filePackagePrefixURL'] == 'undefined', 'Module.filePackagePrefixURL option was removed, use Module.locateFile instead');
+assert(typeof Module['read'] == 'undefined', 'Module.read option was removed (modify read_ in JS)');
+assert(typeof Module['readAsync'] == 'undefined', 'Module.readAsync option was removed (modify readAsync in JS)');
+assert(typeof Module['readBinary'] == 'undefined', 'Module.readBinary option was removed (modify readBinary in JS)');
+assert(typeof Module['setWindowTitle'] == 'undefined', 'Module.setWindowTitle option was removed (modify setWindowTitle in JS)');
+assert(typeof Module['TOTAL_MEMORY'] == 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');
+legacyModuleProp('read', 'read_');
+legacyModuleProp('readAsync', 'readAsync');
+legacyModuleProp('readBinary', 'readBinary');
+legacyModuleProp('setWindowTitle', 'setWindowTitle');
+var IDBFS = 'IDBFS is no longer included by default; build with -lidbfs.js';
+var PROXYFS = 'PROXYFS is no longer included by default; build with -lproxyfs.js';
+var WORKERFS = 'WORKERFS is no longer included by default; build with -lworkerfs.js';
+var NODEFS = 'NODEFS is no longer included by default; build with -lnodefs.js';
+
+assert(!ENVIRONMENT_IS_SHELL, "shell environment detected but not enabled at build time.  Add 'shell' to `-sENVIRONMENT` to enable.");
+
+
+// end include: shell.js
+// include: preamble.js
+// === Preamble library stuff ===
+
+// Documentation for the public APIs defined in this file must be updated in:
+//    site/source/docs/api_reference/preamble.js.rst
+// A prebuilt local version of the documentation is available at:
+//    site/build/text/docs/api_reference/preamble.js.txt
+// You can also build docs locally as HTML or other formats in site/
+// An online HTML version (which may be of a different version of Emscripten)
+//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html
+
+var wasmBinary;
+if (Module['wasmBinary']) wasmBinary = Module['wasmBinary'];legacyModuleProp('wasmBinary', 'wasmBinary');
+var noExitRuntime = Module['noExitRuntime'] || true;legacyModuleProp('noExitRuntime', 'noExitRuntime');
+
+if (typeof WebAssembly != 'object') {
+  abort('no native wasm support detected');
+}
+
+// Wasm globals
+
+var wasmMemory;
+
+//========================================
+// Runtime essentials
+//========================================
+
+// whether we are quitting the application. no code should run after this.
+// set in exit() and abort()
+var ABORT = false;
+
+// set by exit() and abort().  Passed to 'onExit' handler.
+// NOTE: This is also used as the process return code code in shell environments
+// but only when noExitRuntime is false.
+var EXITSTATUS;
+
+/** @type {function(*, string=)} */
+function assert(condition, text) {
+  if (!condition) {
+    abort('Assertion failed' + (text ? ': ' + text : ''));
+  }
+}
+
+// We used to include malloc/free by default in the past. Show a helpful error in
+// builds with assertions.
+function _malloc() {
+  abort("malloc() called but not included in the build - add '_malloc' to EXPORTED_FUNCTIONS");
+}
+function _free() {
+  // Show a helpful error since we used to include free by default in the past.
+  abort("free() called but not included in the build - add '_free' to EXPORTED_FUNCTIONS");
+}
+
+// Memory management
+
+var HEAP,
+/** @type {!Int8Array} */
+  HEAP8,
+/** @type {!Uint8Array} */
+  HEAPU8,
+/** @type {!Int16Array} */
+  HEAP16,
+/** @type {!Uint16Array} */
+  HEAPU16,
+/** @type {!Int32Array} */
+  HEAP32,
+/** @type {!Uint32Array} */
+  HEAPU32,
+/** @type {!Float32Array} */
+  HEAPF32,
+/** @type {!Float64Array} */
+  HEAPF64;
+
+function updateMemoryViews() {
+  var b = wasmMemory.buffer;
+  Module['HEAP8'] = HEAP8 = new Int8Array(b);
+  Module['HEAP16'] = HEAP16 = new Int16Array(b);
+  Module['HEAP32'] = HEAP32 = new Int32Array(b);
+  Module['HEAPU8'] = HEAPU8 = new Uint8Array(b);
+  Module['HEAPU16'] = HEAPU16 = new Uint16Array(b);
+  Module['HEAPU32'] = HEAPU32 = new Uint32Array(b);
+  Module['HEAPF32'] = HEAPF32 = new Float32Array(b);
+  Module['HEAPF64'] = HEAPF64 = new Float64Array(b);
+}
+
+assert(!Module['STACK_SIZE'], 'STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time')
+
+assert(typeof Int32Array != 'undefined' && typeof Float64Array !== 'undefined' && Int32Array.prototype.subarray != undefined && Int32Array.prototype.set != undefined,
+       'JS engine does not provide full typed array support');
+
+// If memory is defined in wasm, the user can't provide it, or set INITIAL_MEMORY
+assert(!Module['wasmMemory'], 'Use of `wasmMemory` detected.  Use -sIMPORTED_MEMORY to define wasmMemory externally');
+assert(!Module['INITIAL_MEMORY'], 'Detected runtime INITIAL_MEMORY setting.  Use -sIMPORTED_MEMORY to define wasmMemory dynamically');
+
+// include: runtime_init_table.js
+// In regular non-RELOCATABLE mode the table is exported
+// from the wasm module and this will be assigned once
+// the exports are available.
+var wasmTable;
+// end include: runtime_init_table.js
+// include: runtime_stack_check.js
+// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
+function writeStackCookie() {
+  var max = _emscripten_stack_get_end();
+  assert((max & 3) == 0);
+  // If the stack ends at address zero we write our cookies 4 bytes into the
+  // stack.  This prevents interference with SAFE_HEAP and ASAN which also
+  // monitor writes to address zero.
+  if (max == 0) {
+    max += 4;
+  }
+  // The stack grow downwards towards _emscripten_stack_get_end.
+  // We write cookies to the final two words in the stack and detect if they are
+  // ever overwritten.
+  HEAPU32[((max)>>2)] = 0x02135467;
+  HEAPU32[(((max)+(4))>>2)] = 0x89BACDFE;
+  // Also test the global address 0 for integrity.
+  HEAPU32[((0)>>2)] = 1668509029;
+}
+
+function checkStackCookie() {
+  if (ABORT) return;
+  var max = _emscripten_stack_get_end();
+  // See writeStackCookie().
+  if (max == 0) {
+    max += 4;
+  }
+  var cookie1 = HEAPU32[((max)>>2)];
+  var cookie2 = HEAPU32[(((max)+(4))>>2)];
+  if (cookie1 != 0x02135467 || cookie2 != 0x89BACDFE) {
+    abort(`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`);
+  }
+  // Also test the global address 0 for integrity.
+  if (HEAPU32[((0)>>2)] != 0x63736d65 /* 'emsc' */) {
+    abort('Runtime error: The application has corrupted its heap memory area (address zero)!');
+  }
+}
+// end include: runtime_stack_check.js
+// include: runtime_assertions.js
+// Endianness check
+(function() {
+  var h16 = new Int16Array(1);
+  var h8 = new Int8Array(h16.buffer);
+  h16[0] = 0x6373;
+  if (h8[0] !== 0x73 || h8[1] !== 0x63) throw 'Runtime error: expected the system to be little-endian! (Run with -sSUPPORT_BIG_ENDIAN to bypass)';
+})();
+
+// end include: runtime_assertions.js
+var __ATPRERUN__  = []; // functions called before the runtime is initialized
+var __ATINIT__    = []; // functions called during startup
+var __ATMAIN__    = []; // functions called when main() is to be run
+var __ATEXIT__    = []; // functions called during shutdown
+var __ATPOSTRUN__ = []; // functions called after the main() is called
+
+var runtimeInitialized = false;
+
+var runtimeKeepaliveCounter = 0;
+
+function keepRuntimeAlive() {
+  return noExitRuntime || runtimeKeepaliveCounter > 0;
+}
+
+function preRun() {
+  if (Module['preRun']) {
+    if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
+    while (Module['preRun'].length) {
+      addOnPreRun(Module['preRun'].shift());
+    }
+  }
+  callRuntimeCallbacks(__ATPRERUN__);
+}
+
+function initRuntime() {
+  assert(!runtimeInitialized);
+  runtimeInitialized = true;
+
+  checkStackCookie();
+
+  
+  callRuntimeCallbacks(__ATINIT__);
+}
+
+function preMain() {
+  checkStackCookie();
+  
+  callRuntimeCallbacks(__ATMAIN__);
+}
+
+function postRun() {
+  checkStackCookie();
+
+  if (Module['postRun']) {
+    if (typeof Module['postRun'] == 'function') Module['postRun'] = [Module['postRun']];
+    while (Module['postRun'].length) {
+      addOnPostRun(Module['postRun'].shift());
+    }
+  }
+
+  callRuntimeCallbacks(__ATPOSTRUN__);
+}
+
+function addOnPreRun(cb) {
+  __ATPRERUN__.unshift(cb);
+}
+
+function addOnInit(cb) {
+  __ATINIT__.unshift(cb);
+}
+
+function addOnPreMain(cb) {
+  __ATMAIN__.unshift(cb);
+}
+
+function addOnExit(cb) {
+}
+
+function addOnPostRun(cb) {
+  __ATPOSTRUN__.unshift(cb);
+}
+
+// include: runtime_math.js
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc
+
+assert(Math.imul, 'This browser does not support Math.imul(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
+assert(Math.fround, 'This browser does not support Math.fround(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
+assert(Math.clz32, 'This browser does not support Math.clz32(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
+assert(Math.trunc, 'This browser does not support Math.trunc(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
+// end include: runtime_math.js
+// A counter of dependencies for calling run(). If we need to
+// do asynchronous work before running, increment this and
+// decrement it. Incrementing must happen in a place like
+// Module.preRun (used by emcc to add file preloading).
+// Note that you can add dependencies in preRun, even though
+// it happens right before run - run will be postponed until
+// the dependencies are met.
+var runDependencies = 0;
+var runDependencyWatcher = null;
+var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
+var runDependencyTracking = {};
+
+function getUniqueRunDependency(id) {
+  var orig = id;
+  while (1) {
+    if (!runDependencyTracking[id]) return id;
+    id = orig + Math.random();
+  }
+}
+
+function addRunDependency(id) {
+  runDependencies++;
+
+  if (Module['monitorRunDependencies']) {
+    Module['monitorRunDependencies'](runDependencies);
+  }
+
+  if (id) {
+    assert(!runDependencyTracking[id]);
+    runDependencyTracking[id] = 1;
+    if (runDependencyWatcher === null && typeof setInterval != 'undefined') {
+      // Check for missing dependencies every few seconds
+      runDependencyWatcher = setInterval(() => {
+        if (ABORT) {
+          clearInterval(runDependencyWatcher);
+          runDependencyWatcher = null;
+          return;
+        }
+        var shown = false;
+        for (var dep in runDependencyTracking) {
+          if (!shown) {
+            shown = true;
+            err('still waiting on run dependencies:');
+          }
+          err('dependency: ' + dep);
+        }
+        if (shown) {
+          err('(end of list)');
+        }
+      }, 10000);
+    }
+  } else {
+    err('warning: run dependency added without ID');
+  }
+}
+
+function removeRunDependency(id) {
+  runDependencies--;
+
+  if (Module['monitorRunDependencies']) {
+    Module['monitorRunDependencies'](runDependencies);
+  }
+
+  if (id) {
+    assert(runDependencyTracking[id]);
+    delete runDependencyTracking[id];
+  } else {
+    err('warning: run dependency removed without ID');
+  }
+  if (runDependencies == 0) {
+    if (runDependencyWatcher !== null) {
+      clearInterval(runDependencyWatcher);
+      runDependencyWatcher = null;
+    }
+    if (dependenciesFulfilled) {
+      var callback = dependenciesFulfilled;
+      dependenciesFulfilled = null;
+      callback(); // can add another dependenciesFulfilled
+    }
+  }
+}
+
+/** @param {string|number=} what */
+function abort(what) {
+  if (Module['onAbort']) {
+    Module['onAbort'](what);
+  }
+
+  what = 'Aborted(' + what + ')';
+  // TODO(sbc): Should we remove printing and leave it up to whoever
+  // catches the exception?
+  err(what);
+
+  ABORT = true;
+  EXITSTATUS = 1;
+
+  // Use a wasm runtime error, because a JS error might be seen as a foreign
+  // exception, which means we'd run destructors on it. We need the error to
+  // simply make the program stop.
+  // FIXME This approach does not work in Wasm EH because it currently does not assume
+  // all RuntimeErrors are from traps; it decides whether a RuntimeError is from
+  // a trap or not based on a hidden field within the object. So at the moment
+  // we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
+  // allows this in the wasm spec.
+
+  // Suppress closure compiler warning here. Closure compiler's builtin extern
+  // defintion for WebAssembly.RuntimeError claims it takes no arguments even
+  // though it can.
+  // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
+  /** @suppress {checkTypes} */
+  var e = new WebAssembly.RuntimeError(what);
+
+  // Throw the error whether or not MODULARIZE is set because abort is used
+  // in code paths apart from instantiation where an exception is expected
+  // to be thrown when abort is called.
+  throw e;
+}
+
+// include: memoryprofiler.js
+// end include: memoryprofiler.js
+// show errors on likely calls to FS when it was not included
+var FS = {
+  error: function() {
+    abort('Filesystem support (FS) was not included. The problem is that you are using files from JS, but files were not used from C/C++, so filesystem support was not auto-included. You can force-include filesystem support with -sFORCE_FILESYSTEM');
+  },
+  init: function() { FS.error() },
+  createDataFile: function() { FS.error() },
+  createPreloadedFile: function() { FS.error() },
+  createLazyFile: function() { FS.error() },
+  open: function() { FS.error() },
+  mkdev: function() { FS.error() },
+  registerDevice: function() { FS.error() },
+  analyzePath: function() { FS.error() },
+
+  ErrnoError: function ErrnoError() { FS.error() },
+};
+Module['FS_createDataFile'] = FS.createDataFile;
+Module['FS_createPreloadedFile'] = FS.createPreloadedFile;
+
+// include: URIUtils.js
+// Prefix of data URIs emitted by SINGLE_FILE and related options.
+var dataURIPrefix = 'data:application/octet-stream;base64,';
+
+// Indicates whether filename is a base64 data URI.
+function isDataURI(filename) {
+  // Prefix of data URIs emitted by SINGLE_FILE and related options.
+  return filename.startsWith(dataURIPrefix);
+}
+
+// Indicates whether filename is delivered via file protocol (as opposed to http/https)
+function isFileURI(filename) {
+  return filename.startsWith('file://');
+}
+// end include: URIUtils.js
+/** @param {boolean=} fixedasm */
+function createExportWrapper(name, fixedasm) {
+  return function() {
+    var displayName = name;
+    var asm = fixedasm;
+    if (!fixedasm) {
+      asm = Module['asm'];
+    }
+    assert(runtimeInitialized, 'native function `' + displayName + '` called before runtime initialization');
+    if (!asm[name]) {
+      assert(asm[name], 'exported native function `' + displayName + '` not found');
+    }
+    return asm[name].apply(null, arguments);
+  };
+}
+
+// include: runtime_exceptions.js
+// end include: runtime_exceptions.js
+var wasmBinaryFile;
+  wasmBinaryFile = 'test.wasm';
+  if (!isDataURI(wasmBinaryFile)) {
+    wasmBinaryFile = locateFile(wasmBinaryFile);
+  }
+
+function getBinary(file) {
+  try {
+    if (file == wasmBinaryFile && wasmBinary) {
+      return new Uint8Array(wasmBinary);
+    }
+    if (readBinary) {
+      return readBinary(file);
+    }
+    throw "both async and sync fetching of the wasm failed";
+  }
+  catch (err) {
+    abort(err);
+  }
+}
+
+function getBinaryPromise(binaryFile) {
+  // If we don't have the binary yet, try to load it asynchronously.
+  // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
+  // See https://github.com/github/fetch/pull/92#issuecomment-140665932
+  // Cordova or Electron apps are typically loaded from a file:// url.
+  // So use fetch if it is available and the url is not a file, otherwise fall back to XHR.
+  if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
+    if (typeof fetch == 'function'
+      && !isFileURI(binaryFile)
+    ) {
+      return fetch(binaryFile, { credentials: 'same-origin' }).then((response) => {
+        if (!response['ok']) {
+          throw "failed to load wasm binary file at '" + binaryFile + "'";
+        }
+        return response['arrayBuffer']();
+      }).catch(() => getBinary(binaryFile));
+    }
+    else {
+      if (readAsync) {
+        // fetch is not available or url is file => try XHR (readAsync uses XHR internally)
+        return new Promise((resolve, reject) => {
+          readAsync(binaryFile, (response) => resolve(new Uint8Array(/** @type{!ArrayBuffer} */(response))), reject)
+        });
+      }
+    }
+  }
+
+  // Otherwise, getBinary should be able to get it synchronously
+  return Promise.resolve().then(() => getBinary(binaryFile));
+}
+
+function instantiateArrayBuffer(binaryFile, imports, receiver) {
+  return getBinaryPromise(binaryFile).then((binary) => {
+    return WebAssembly.instantiate(binary, imports);
+  }).then((instance) => {
+    return instance;
+  }).then(receiver, (reason) => {
+    err('failed to asynchronously prepare wasm: ' + reason);
+
+    // Warn on some common problems.
+    if (isFileURI(wasmBinaryFile)) {
+      err('warning: Loading from a file URI (' + wasmBinaryFile + ') is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing');
+    }
+    abort(reason);
+  });
+}
+
+function instantiateAsync(binary, binaryFile, imports, callback) {
+  if (!binary &&
+      typeof WebAssembly.instantiateStreaming == 'function' &&
+      !isDataURI(binaryFile) &&
+      // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
+      !isFileURI(binaryFile) &&
+      // Avoid instantiateStreaming() on Node.js environment for now, as while
+      // Node.js v18.1.0 implements it, it does not have a full fetch()
+      // implementation yet.
+      //
+      // Reference:
+      //   https://github.com/emscripten-core/emscripten/pull/16917
+      !ENVIRONMENT_IS_NODE &&
+      typeof fetch == 'function') {
+    return fetch(binaryFile, { credentials: 'same-origin' }).then((response) => {
+      // Suppress closure warning here since the upstream definition for
+      // instantiateStreaming only allows Promise<Repsponse> rather than
+      // an actual Response.
+      // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure is fixed.
+      /** @suppress {checkTypes} */
+      var result = WebAssembly.instantiateStreaming(response, imports);
+
+      return result.then(
+        callback,
+        function(reason) {
+          // We expect the most common failure cause to be a bad MIME type for the binary,
+          // in which case falling back to ArrayBuffer instantiation should work.
+          err('wasm streaming compile failed: ' + reason);
+          err('falling back to ArrayBuffer instantiation');
+          return instantiateArrayBuffer(binaryFile, imports, callback);
+        });
+    });
+  } else {
+    return instantiateArrayBuffer(binaryFile, imports, callback);
+  }
+}
+
+// Create the wasm instance.
+// Receives the wasm imports, returns the exports.
+function createWasm() {
+  // prepare imports
+  var info = {
+    'env': wasmImports,
+    'wasi_snapshot_preview1': wasmImports,
+  };
+  // Load the wasm module and create an instance of using native support in the JS engine.
+  // handle a generated wasm instance, receiving its exports and
+  // performing other necessary setup
+  /** @param {WebAssembly.Module=} module*/
+  function receiveInstance(instance, module) {
+    var exports = instance.exports;
+
+    Module['asm'] = exports;
+
+    wasmMemory = Module['asm']['memory'];
+    assert(wasmMemory, "memory not found in wasm exports");
+    // This assertion doesn't hold when emscripten is run in --post-link
+    // mode.
+    // TODO(sbc): Read INITIAL_MEMORY out of the wasm file in post-link mode.
+    //assert(wasmMemory.buffer.byteLength === 16777216);
+    updateMemoryViews();
+
+    wasmTable = Module['asm']['__indirect_function_table'];
+    assert(wasmTable, "table not found in wasm exports");
+
+    addOnInit(Module['asm']['__wasm_call_ctors']);
+
+    removeRunDependency('wasm-instantiate');
+    return exports;
+  }
+  // wait for the pthread pool (if any)
+  addRunDependency('wasm-instantiate');
+
+  // Prefer streaming instantiation if available.
+  // Async compilation can be confusing when an error on the page overwrites Module
+  // (for example, if the order of elements is wrong, and the one defining Module is
+  // later), so we save Module and check it later.
+  var trueModule = Module;
+  function receiveInstantiationResult(result) {
+    // 'result' is a ResultObject object which has both the module and instance.
+    // receiveInstance() will swap in the exports (to Module.asm) so they can be called
+    assert(Module === trueModule, 'the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?');
+    trueModule = null;
+    // TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
+    // When the regression is fixed, can restore the above PTHREADS-enabled path.
+    receiveInstance(result['instance']);
+  }
+
+  // User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
+  // to manually instantiate the Wasm module themselves. This allows pages to
+  // run the instantiation parallel to any other async startup actions they are
+  // performing.
+  // Also pthreads and wasm workers initialize the wasm instance through this
+  // path.
+  if (Module['instantiateWasm']) {
+
+    try {
+      return Module['instantiateWasm'](info, receiveInstance);
+    } catch(e) {
+      err('Module.instantiateWasm callback failed with error: ' + e);
+        return false;
+    }
+  }
+
+  instantiateAsync(wasmBinary, wasmBinaryFile, info, receiveInstantiationResult);
+  return {}; // no exports yet; we'll fill them in later
+}
+
+// Globals used by JS i64 conversions (see makeSetValue)
+var tempDouble;
+var tempI64;
+
+// include: runtime_debug.js
+function legacyModuleProp(prop, newName) {
+  if (!Object.getOwnPropertyDescriptor(Module, prop)) {
+    Object.defineProperty(Module, prop, {
+      configurable: true,
+      get: function() {
+        abort('Module.' + prop + ' has been replaced with plain ' + newName + ' (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)');
+      }
+    });
+  }
+}
+
+function ignoredModuleProp(prop) {
+  if (Object.getOwnPropertyDescriptor(Module, prop)) {
+    abort('`Module.' + prop + '` was supplied but `' + prop + '` not included in INCOMING_MODULE_JS_API');
+  }
+}
+
+// forcing the filesystem exports a few things by default
+function isExportedByForceFilesystem(name) {
+  return name === 'FS_createPath' ||
+         name === 'FS_createDataFile' ||
+         name === 'FS_createPreloadedFile' ||
+         name === 'FS_unlink' ||
+         name === 'addRunDependency' ||
+         // The old FS has some functionality that WasmFS lacks.
+         name === 'FS_createLazyFile' ||
+         name === 'FS_createDevice' ||
+         name === 'removeRunDependency';
+}
+
+function missingGlobal(sym, msg) {
+  if (typeof globalThis !== 'undefined') {
+    Object.defineProperty(globalThis, sym, {
+      configurable: true,
+      get: function() {
+        warnOnce('`' + sym + '` is not longer defined by emscripten. ' + msg);
+        return undefined;
+      }
+    });
+  }
+}
+
+missingGlobal('buffer', 'Please use HEAP8.buffer or wasmMemory.buffer');
+
+function missingLibrarySymbol(sym) {
+  if (typeof globalThis !== 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
+    Object.defineProperty(globalThis, sym, {
+      configurable: true,
+      get: function() {
+        // Can't `abort()` here because it would break code that does runtime
+        // checks.  e.g. `if (typeof SDL === 'undefined')`.
+        var msg = '`' + sym + '` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line';
+        // DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
+        // library.js, which means $name for a JS name with no prefix, or name
+        // for a JS name like _name.
+        var librarySymbol = sym;
+        if (!librarySymbol.startsWith('_')) {
+          librarySymbol = '$' + sym;
+        }
+        msg += " (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='" + librarySymbol + "')";
+        if (isExportedByForceFilesystem(sym)) {
+          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
+        }
+        warnOnce(msg);
+        return undefined;
+      }
+    });
+  }
+  // Any symbol that is not included from the JS libary is also (by definition)
+  // not exported on the Module object.
+  unexportedRuntimeSymbol(sym);
+}
+
+function unexportedRuntimeSymbol(sym) {
+  if (!Object.getOwnPropertyDescriptor(Module, sym)) {
+    Object.defineProperty(Module, sym, {
+      configurable: true,
+      get: function() {
+        var msg = "'" + sym + "' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)";
+        if (isExportedByForceFilesystem(sym)) {
+          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
+        }
+        abort(msg);
+      }
+    });
+  }
+}
+
+// Used by XXXXX_DEBUG settings to output debug messages.
+function dbg(text) {
+  // TODO(sbc): Make this configurable somehow.  Its not always convenient for
+  // logging to show up as warnings.
+  console.warn.apply(console, arguments);
+}
+// end include: runtime_debug.js
+// === Body ===
+
+// end include: preamble.js
+
+  /** @constructor */
+  function ExitStatus(status) {
+      this.name = 'ExitStatus';
+      this.message = `Program terminated with exit(${status})`;
+      this.status = status;
+    }
+
+  var callRuntimeCallbacks = (callbacks) => {
+      while (callbacks.length > 0) {
+        // Pass the module as the first argument.
+        callbacks.shift()(Module);
+      }
+    };
+
+  
+    /**
+     * @param {number} ptr
+     * @param {string} type
+     */
+  function getValue(ptr, type = 'i8') {
+    if (type.endsWith('*')) type = '*';
+    switch (type) {
+      case 'i1': return HEAP8[((ptr)>>0)];
+      case 'i8': return HEAP8[((ptr)>>0)];
+      case 'i16': return HEAP16[((ptr)>>1)];
+      case 'i32': return HEAP32[((ptr)>>2)];
+      case 'i64': abort('to do getValue(i64) use WASM_BIGINT');
+      case 'float': return HEAPF32[((ptr)>>2)];
+      case 'double': return HEAPF64[((ptr)>>3)];
+      case '*': return HEAPU32[((ptr)>>2)];
+      default: abort(`invalid type for getValue: ${type}`);
+    }
+  }
+
+  var ptrToString = (ptr) => {
+      assert(typeof ptr === 'number');
+      return '0x' + ptr.toString(16).padStart(8, '0');
+    };
+
+  
+    /**
+     * @param {number} ptr
+     * @param {number} value
+     * @param {string} type
+     */
+  function setValue(ptr, value, type = 'i8') {
+    if (type.endsWith('*')) type = '*';
+    switch (type) {
+      case 'i1': HEAP8[((ptr)>>0)] = value; break;
+      case 'i8': HEAP8[((ptr)>>0)] = value; break;
+      case 'i16': HEAP16[((ptr)>>1)] = value; break;
+      case 'i32': HEAP32[((ptr)>>2)] = value; break;
+      case 'i64': abort('to do setValue(i64) use WASM_BIGINT');
+      case 'float': HEAPF32[((ptr)>>2)] = value; break;
+      case 'double': HEAPF64[((ptr)>>3)] = value; break;
+      case '*': HEAPU32[((ptr)>>2)] = value; break;
+      default: abort(`invalid type for setValue: ${type}`);
+    }
+  }
+
+  var warnOnce = (text) => {
+      if (!warnOnce.shown) warnOnce.shown = {};
+      if (!warnOnce.shown[text]) {
+        warnOnce.shown[text] = 1;
+        if (ENVIRONMENT_IS_NODE) text = 'warning: ' + text;
+        err(text);
+      }
+    };
+
+  
+  var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder('utf8') : undefined;
+  
+    /**
+     * Given a pointer 'idx' to a null-terminated UTF8-encoded string in the given
+     * array that contains uint8 values, returns a copy of that string as a
+     * Javascript String object.
+     * heapOrArray is either a regular array, or a JavaScript typed array view.
+     * @param {number} idx
+     * @param {number=} maxBytesToRead
+     * @return {string}
+     */
+  var UTF8ArrayToString = (heapOrArray, idx, maxBytesToRead) => {
+      var endIdx = idx + maxBytesToRead;
+      var endPtr = idx;
+      // TextDecoder needs to know the byte length in advance, it doesn't stop on
+      // null terminator by itself.  Also, use the length info to avoid running tiny
+      // strings through TextDecoder, since .subarray() allocates garbage.
+      // (As a tiny code save trick, compare endPtr against endIdx using a negation,
+      // so that undefined means Infinity)
+      while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
+  
+      if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
+        return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
+      }
+      var str = '';
+      // If building with TextDecoder, we have already computed the string length
+      // above, so test loop end condition against that
+      while (idx < endPtr) {
+        // For UTF8 byte structure, see:
+        // http://en.wikipedia.org/wiki/UTF-8#Description
+        // https://www.ietf.org/rfc/rfc2279.txt
+        // https://tools.ietf.org/html/rfc3629
+        var u0 = heapOrArray[idx++];
+        if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
+        var u1 = heapOrArray[idx++] & 63;
+        if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
+        var u2 = heapOrArray[idx++] & 63;
+        if ((u0 & 0xF0) == 0xE0) {
+          u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
+        } else {
+          if ((u0 & 0xF8) != 0xF0) warnOnce('Invalid UTF-8 leading byte ' + ptrToString(u0) + ' encountered when deserializing a UTF-8 string in wasm memory to a JS string!');
+          u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heapOrArray[idx++] & 63);
+        }
+  
+        if (u0 < 0x10000) {
+          str += String.fromCharCode(u0);
+        } else {
+          var ch = u0 - 0x10000;
+          str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
+        }
+      }
+      return str;
+    };
+  
+    /**
+     * Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the
+     * emscripten HEAP, returns a copy of that string as a Javascript String object.
+     *
+     * @param {number} ptr
+     * @param {number=} maxBytesToRead - An optional length that specifies the
+     *   maximum number of bytes to read. You can omit this parameter to scan the
+     *   string until the first 0 byte. If maxBytesToRead is passed, and the string
+     *   at [ptr, ptr+maxBytesToReadr[ contains a null byte in the middle, then the
+     *   string will cut short at that byte index (i.e. maxBytesToRead will not
+     *   produce a string of exact length [ptr, ptr+maxBytesToRead[) N.B. mixing
+     *   frequent uses of UTF8ToString() with and without maxBytesToRead may throw
+     *   JS JIT optimizations off, so it is worth to consider consistently using one
+     * @return {string}
+     */
+  var UTF8ToString = (ptr, maxBytesToRead) => {
+      assert(typeof ptr == 'number');
+      return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
+    };
+  var SYSCALLS = {varargs:undefined,get:function() {
+        assert(SYSCALLS.varargs != undefined);
+        SYSCALLS.varargs += 4;
+        var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
+        return ret;
+      },getStr:function(ptr) {
+        var ret = UTF8ToString(ptr);
+        return ret;
+      }};
+  var _proc_exit = (code) => {
+      EXITSTATUS = code;
+      if (!keepRuntimeAlive()) {
+        if (Module['onExit']) Module['onExit'](code);
+        ABORT = true;
+      }
+      quit_(code, new ExitStatus(code));
+    };
+  /** @param {boolean|number=} implicit */
+  var exitJS = (status, implicit) => {
+      EXITSTATUS = status;
+  
+      checkUnflushedContent();
+  
+      // if exit() was called explicitly, warn the user if the runtime isn't actually being shut down
+      if (keepRuntimeAlive() && !implicit) {
+        var msg = `program exited (with status: ${status}), but keepRuntimeAlive() is set (counter=${runtimeKeepaliveCounter}) due to an async operation, so halting execution but not exiting the runtime or preventing further async execution (you can use emscripten_force_exit, if you want to force a true shutdown)`;
+        err(msg);
+      }
+  
+      _proc_exit(status);
+    };
+
+  var handleException = (e) => {
+      // Certain exception types we do not treat as errors since they are used for
+      // internal control flow.
+      // 1. ExitStatus, which is thrown by exit()
+      // 2. "unwind", which is thrown by emscripten_unwind_to_js_event_loop() and others
+      //    that wish to return to JS event loop.
+      if (e instanceof ExitStatus || e == 'unwind') {
+        return EXITSTATUS;
+      }
+      checkStackCookie();
+      if (e instanceof WebAssembly.RuntimeError) {
+        if (_emscripten_stack_get_current() <= 0) {
+          err('Stack overflow detected.  You can try increasing -sSTACK_SIZE (currently set to 65536)');
+        }
+      }
+      quit_(1, e);
+    };
+function checkIncomingModuleAPI() {
+  ignoredModuleProp('fetchSettings');
+}
+var wasmImports = {
+  
+};
+var asm = createWasm();
+/** @type {function(...*):?} */
+var ___wasm_call_ctors = createExportWrapper("__wasm_call_ctors");
+/** @type {function(...*):?} */
+var _main = Module["_main"] = createExportWrapper("main");
+/** @type {function(...*):?} */
+var ___errno_location = createExportWrapper("__errno_location");
+/** @type {function(...*):?} */
+var _fflush = Module["_fflush"] = createExportWrapper("fflush");
+/** @type {function(...*):?} */
+var _emscripten_stack_init = function() {
+  return (_emscripten_stack_init = Module["asm"]["emscripten_stack_init"]).apply(null, arguments);
+};
+
+/** @type {function(...*):?} */
+var _emscripten_stack_get_free = function() {
+  return (_emscripten_stack_get_free = Module["asm"]["emscripten_stack_get_free"]).apply(null, arguments);
+};
+
+/** @type {function(...*):?} */
+var _emscripten_stack_get_base = function() {
+  return (_emscripten_stack_get_base = Module["asm"]["emscripten_stack_get_base"]).apply(null, arguments);
+};
+
+/** @type {function(...*):?} */
+var _emscripten_stack_get_end = function() {
+  return (_emscripten_stack_get_end = Module["asm"]["emscripten_stack_get_end"]).apply(null, arguments);
+};
+
+/** @type {function(...*):?} */
+var stackSave = createExportWrapper("stackSave");
+/** @type {function(...*):?} */
+var stackRestore = createExportWrapper("stackRestore");
+/** @type {function(...*):?} */
+var stackAlloc = createExportWrapper("stackAlloc");
+/** @type {function(...*):?} */
+var _emscripten_stack_get_current = function() {
+  return (_emscripten_stack_get_current = Module["asm"]["emscripten_stack_get_current"]).apply(null, arguments);
+};
+
+
+
+// include: postamble.js
+// === Auto-generated postamble setup entry stuff ===
+
+var missingLibrarySymbols = [
+  'zeroMemory',
+  'getHeapMax',
+  'abortOnCannotGrowMemory',
+  'growMemory',
+  'isLeapYear',
+  'ydayFromDate',
+  'arraySum',
+  'addDays',
+  'setErrNo',
+  'inetPton4',
+  'inetNtop4',
+  'inetPton6',
+  'inetNtop6',
+  'readSockaddr',
+  'writeSockaddr',
+  'getHostByName',
+  'initRandomFill',
+  'randomFill',
+  'traverseStack',
+  'getCallstack',
+  'emscriptenLog',
+  'convertPCtoSourceLocation',
+  'readEmAsmArgs',
+  'jstoi_q',
+  'jstoi_s',
+  'getExecutableName',
+  'listenOnce',
+  'autoResumeAudioContext',
+  'dynCallLegacy',
+  'getDynCaller',
+  'dynCall',
+  'runtimeKeepalivePush',
+  'runtimeKeepalivePop',
+  'callUserCallback',
+  'maybeExit',
+  'safeSetTimeout',
+  'asmjsMangle',
+  'asyncLoad',
+  'alignMemory',
+  'mmapAlloc',
+  'HandleAllocator',
+  'getNativeTypeSize',
+  'STACK_SIZE',
+  'STACK_ALIGN',
+  'POINTER_SIZE',
+  'ASSERTIONS',
+  'writeI53ToI64',
+  'writeI53ToI64Clamped',
+  'writeI53ToI64Signaling',
+  'writeI53ToU64Clamped',
+  'writeI53ToU64Signaling',
+  'readI53FromI64',
+  'readI53FromU64',
+  'convertI32PairToI53',
+  'convertI32PairToI53Checked',
+  'convertU32PairToI53',
+  'getCFunc',
+  'ccall',
+  'cwrap',
+  'uleb128Encode',
+  'sigToWasmTypes',
+  'generateFuncType',
+  'convertJsFunctionToWasm',
+  'getEmptyTableSlot',
+  'updateTableMap',
+  'getFunctionAddress',
+  'addFunction',
+  'removeFunction',
+  'reallyNegative',
+  'unSign',
+  'strLen',
+  'reSign',
+  'formatString',
+  'stringToUTF8Array',
+  'stringToUTF8',
+  'lengthBytesUTF8',
+  'intArrayFromString',
+  'intArrayToString',
+  'AsciiToString',
+  'stringToAscii',
+  'UTF16ToString',
+  'stringToUTF16',
+  'lengthBytesUTF16',
+  'UTF32ToString',
+  'stringToUTF32',
+  'lengthBytesUTF32',
+  'stringToNewUTF8',
+  'stringToUTF8OnStack',
+  'writeArrayToMemory',
+  'registerKeyEventCallback',
+  'maybeCStringToJsString',
+  'findEventTarget',
+  'findCanvasEventTarget',
+  'getBoundingClientRect',
+  'fillMouseEventData',
+  'registerMouseEventCallback',
+  'registerWheelEventCallback',
+  'registerUiEventCallback',
+  'registerFocusEventCallback',
+  'fillDeviceOrientationEventData',
+  'registerDeviceOrientationEventCallback',
+  'fillDeviceMotionEventData',
+  'registerDeviceMotionEventCallback',
+  'screenOrientation',
+  'fillOrientationChangeEventData',
+  'registerOrientationChangeEventCallback',
+  'fillFullscreenChangeEventData',
+  'registerFullscreenChangeEventCallback',
+  'JSEvents_requestFullscreen',
+  'JSEvents_resizeCanvasForFullscreen',
+  'registerRestoreOldStyle',
+  'hideEverythingExceptGivenElement',
+  'restoreHiddenElements',
+  'setLetterbox',
+  'softFullscreenResizeWebGLRenderTarget',
+  'doRequestFullscreen',
+  'fillPointerlockChangeEventData',
+  'registerPointerlockChangeEventCallback',
+  'registerPointerlockErrorEventCallback',
+  'requestPointerLock',
+  'fillVisibilityChangeEventData',
+  'registerVisibilityChangeEventCallback',
+  'registerTouchEventCallback',
+  'fillGamepadEventData',
+  'registerGamepadEventCallback',
+  'registerBeforeUnloadEventCallback',
+  'fillBatteryEventData',
+  'battery',
+  'registerBatteryEventCallback',
+  'setCanvasElementSize',
+  'getCanvasElementSize',
+  'demangle',
+  'demangleAll',
+  'jsStackTrace',
+  'stackTrace',
+  'getEnvStrings',
+  'checkWasiClock',
+  'flush_NO_FILESYSTEM',
+  'wasiRightsToMuslOFlags',
+  'wasiOFlagsToMuslOFlags',
+  'createDyncallWrapper',
+  'setImmediateWrapped',
+  'clearImmediateWrapped',
+  'polyfillSetImmediate',
+  'getPromise',
+  'makePromise',
+  'idsToPromises',
+  'makePromiseCallback',
+  'ExceptionInfo',
+  'setMainLoop',
+  'getSocketFromFD',
+  'getSocketAddress',
+  'FS_createPreloadedFile',
+  'FS_modeStringToFlags',
+  'FS_getMode',
+  '_setNetworkCallback',
+  'heapObjectForWebGLType',
+  'heapAccessShiftForWebGLHeap',
+  'webgl_enable_ANGLE_instanced_arrays',
+  'webgl_enable_OES_vertex_array_object',
+  'webgl_enable_WEBGL_draw_buffers',
+  'webgl_enable_WEBGL_multi_draw',
+  'emscriptenWebGLGet',
+  'computeUnpackAlignedImageSize',
+  'colorChannelsInGlTextureFormat',
+  'emscriptenWebGLGetTexPixelData',
+  '__glGenObject',
+  'emscriptenWebGLGetUniform',
+  'webglGetUniformLocation',
+  'webglPrepareUniformLocationsBeforeFirstUse',
+  'webglGetLeftBracePos',
+  'emscriptenWebGLGetVertexAttrib',
+  '__glGetActiveAttribOrUniform',
+  'writeGLArray',
+  'registerWebGlEventCallback',
+  'runAndAbortIfError',
+  'SDL_unicode',
+  'SDL_ttfContext',
+  'SDL_audio',
+  'GLFW_Window',
+  'ALLOC_NORMAL',
+  'ALLOC_STACK',
+  'allocate',
+  'writeStringToMemory',
+  'writeAsciiToMemory',
+];
+missingLibrarySymbols.forEach(missingLibrarySymbol)
+
+var unexportedSymbols = [
+  'run',
+  'addOnPreRun',
+  'addOnInit',
+  'addOnPreMain',
+  'addOnExit',
+  'addOnPostRun',
+  'addRunDependency',
+  'removeRunDependency',
+  'FS_createFolder',
+  'FS_createPath',
+  'FS_createDataFile',
+  'FS_createLazyFile',
+  'FS_createLink',
+  'FS_createDevice',
+  'FS_unlink',
+  'out',
+  'err',
+  'callMain',
+  'abort',
+  'keepRuntimeAlive',
+  'wasmMemory',
+  'stackAlloc',
+  'stackSave',
+  'stackRestore',
+  'getTempRet0',
+  'setTempRet0',
+  'writeStackCookie',
+  'checkStackCookie',
+  'ptrToString',
+  'exitJS',
+  'ENV',
+  'MONTH_DAYS_REGULAR',
+  'MONTH_DAYS_LEAP',
+  'MONTH_DAYS_REGULAR_CUMULATIVE',
+  'MONTH_DAYS_LEAP_CUMULATIVE',
+  'ERRNO_CODES',
+  'ERRNO_MESSAGES',
+  'DNS',
+  'Protocols',
+  'Sockets',
+  'timers',
+  'warnOnce',
+  'UNWIND_CACHE',
+  'readEmAsmArgsArray',
+  'handleException',
+  'freeTableIndexes',
+  'functionsInTableMap',
+  'setValue',
+  'getValue',
+  'PATH',
+  'PATH_FS',
+  'UTF8Decoder',
+  'UTF8ArrayToString',
+  'UTF8ToString',
+  'UTF16Decoder',
+  'JSEvents',
+  'specialHTMLTargets',
+  'currentFullscreenStrategy',
+  'restoreOldWindowedStyle',
+  'ExitStatus',
+  'promiseMap',
+  'uncaughtExceptionCount',
+  'exceptionLast',
+  'exceptionCaught',
+  'Browser',
+  'wget',
+  'SYSCALLS',
+  'preloadPlugins',
+  'FS',
+  'MEMFS',
+  'TTY',
+  'PIPEFS',
+  'SOCKFS',
+  'tempFixedLengthArray',
+  'miniTempWebGLFloatBuffers',
+  'miniTempWebGLIntBuffers',
+  'GL',
+  'emscripten_webgl_power_preferences',
+  'AL',
+  'GLUT',
+  'EGL',
+  'GLEW',
+  'IDBStore',
+  'SDL',
+  'SDL_gfx',
+  'GLFW',
+  'allocateUTF8',
+  'allocateUTF8OnStack',
+];
+unexportedSymbols.forEach(unexportedRuntimeSymbol);
+
+
+
+var calledRun;
+
+dependenciesFulfilled = function runCaller() {
+  // If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
+  if (!calledRun) run();
+  if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
+};
+
+function callMain() {
+  assert(runDependencies == 0, 'cannot call main when async dependencies remain! (listen on Module["onRuntimeInitialized"])');
+  assert(__ATPRERUN__.length == 0, 'cannot call main when preRun functions remain to be called');
+
+  var entryFunction = _main;
+
+  var argc = 0;
+  var argv = 0;
+
+  try {
+
+    var ret = entryFunction(argc, argv);
+
+    // if we're not running an evented main loop, it's time to exit
+    exitJS(ret, /* implicit = */ true);
+    return ret;
+  }
+  catch (e) {
+    return handleException(e);
+  }
+}
+
+function stackCheckInit() {
+  // This is normally called automatically during __wasm_call_ctors but need to
+  // get these values before even running any of the ctors so we call it redundantly
+  // here.
+  _emscripten_stack_init();
+  // TODO(sbc): Move writeStackCookie to native to to avoid this.
+  writeStackCookie();
+}
+
+function run() {
+
+  if (runDependencies > 0) {
+    return;
+  }
+
+    stackCheckInit();
+
+  preRun();
+
+  // a preRun added a dependency, run will be called later
+  if (runDependencies > 0) {
+    return;
+  }
+
+  function doRun() {
+    // run may have just been called through dependencies being fulfilled just in this very frame,
+    // or while the async setStatus time below was happening
+    if (calledRun) return;
+    calledRun = true;
+    Module['calledRun'] = true;
+
+    if (ABORT) return;
+
+    initRuntime();
+
+    preMain();
+
+    if (Module['onRuntimeInitialized']) Module['onRuntimeInitialized']();
+
+    if (shouldRunNow) callMain();
+
+    postRun();
+  }
+
+  if (Module['setStatus']) {
+    Module['setStatus']('Running...');
+    setTimeout(function() {
+      setTimeout(function() {
+        Module['setStatus']('');
+      }, 1);
+      doRun();
+    }, 1);
+  } else
+  {
+    doRun();
+  }
+  checkStackCookie();
+}
+
+function checkUnflushedContent() {
+  // Compiler settings do not allow exiting the runtime, so flushing
+  // the streams is not possible. but in ASSERTIONS mode we check
+  // if there was something to flush, and if so tell the user they
+  // should request that the runtime be exitable.
+  // Normally we would not even include flush() at all, but in ASSERTIONS
+  // builds we do so just for this check, and here we see if there is any
+  // content to flush, that is, we check if there would have been
+  // something a non-ASSERTIONS build would have not seen.
+  // How we flush the streams depends on whether we are in SYSCALLS_REQUIRE_FILESYSTEM=0
+  // mode (which has its own special function for this; otherwise, all
+  // the code is inside libc)
+  var oldOut = out;
+  var oldErr = err;
+  var has = false;
+  out = err = (x) => {
+    has = true;
+  }
+  try { // it doesn't matter if it fails
+    _fflush(0);
+  } catch(e) {}
+  out = oldOut;
+  err = oldErr;
+  if (has) {
+    warnOnce('stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline when you printf etc.');
+    warnOnce('(this may also be due to not including full filesystem support - try building with -sFORCE_FILESYSTEM)');
+  }
+}
+
+if (Module['preInit']) {
+  if (typeof Module['preInit'] == 'function') Module['preInit'] = [Module['preInit']];
+  while (Module['preInit'].length > 0) {
+    Module['preInit'].pop()();
+  }
+}
+
+// shouldRunNow refers to calling main(), not run().
+var shouldRunNow = true;
+
+if (Module['noInitialRun']) shouldRunNow = false;
+
+run();
+
+
+// end include: postamble.js


=====================================
utils/ghc-toolchain/test.c
=====================================
@@ -0,0 +1 @@
+int f() {return 0;}


=====================================
utils/ghc-toolchain/test.wasm
=====================================
Binary files /dev/null and b/utils/ghc-toolchain/test.wasm differ



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f8689c726a54aa1831c93ae8d195757d14a2946a

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f8689c726a54aa1831c93ae8d195757d14a2946a
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