[Git][ghc/ghc][wip/no_fixup_chains_2] 2 commits: Store bootstrap_llvm_target and use it to set LlvmTarget in bindists

[Matthew Pickering (@mpickering)]

Matthew Pickering pushed to branch wip/no_fixup_chains_2 at Glasgow Haskell Compiler / GHC


Commits:
8d62a0e1 by Matthew Pickering at 2023-01-09T11:12:53+00:00
Store bootstrap_llvm_target and use it to set LlvmTarget in bindists

This mirrors some existing logic for the bootstrap_target which
influences how TargetPlatform is set.

As described on #21970 not storing this led to `LlvmTarget` being set incorrectly
and hence the wrong `--target` flag being passed to the C compiler.

Towards #21970

- - - - -
e3669c95 by Matthew Pickering at 2023-01-09T11:12:53+00:00
Check for FP_LD_NO_FIXUP_CHAINS in installation configure script

Otherwise, when installing from a bindist the C flag isn't passed to the
C compiler.

- - - - -


3 changed files:

- configure.ac
- distrib/configure.ac.in
- m4/ghc_llvm_target.m4


Changes:

=====================================
configure.ac
=====================================
@@ -667,6 +667,8 @@ GHC_LLVM_TARGET_SET_VAR
 # we intend to pass trough --targets to llvm as is.
 LLVMTarget_CPP=`    echo "$LlvmTarget"`
 AC_SUBST(LLVMTarget_CPP)
+# The target is substituted into the distrib/configure.ac file
+AC_SUBST(LlvmTarget)
 
 dnl ** See whether cc supports --target=<triple> and set
 dnl CONF_CC_OPTS_STAGE[012] accordingly.


=====================================
distrib/configure.ac.in
=====================================
@@ -18,6 +18,8 @@ dnl--------------------------------------------------------------------
 dnl Various things from the source distribution configure
 bootstrap_target=@TargetPlatform@
 
+bootstrap_llvm_target=@LlvmTarget@
+
 TargetHasRTSLinker=@TargetHasRTSLinker@
 AC_SUBST(TargetHasRTSLinker)
 
@@ -169,6 +171,11 @@ FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE1],[CONF_GCC_LINKER_OPTS_STAG
 # Stage 3 won't be supported by cross-compilation
 FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE2],[CONF_GCC_LINKER_OPTS_STAGE2],[CONF_LD_LINKER_OPTS_STAGE2],[CONF_CPP_OPTS_STAGE2])
 
+FP_LD_NO_FIXUP_CHAINS([target], [LDFLAGS])
+FP_LD_NO_FIXUP_CHAINS([build], [CONF_GCC_LINKER_OPTS_STAGE0])
+FP_LD_NO_FIXUP_CHAINS([target], [CONF_GCC_LINKER_OPTS_STAGE1])
+FP_LD_NO_FIXUP_CHAINS([target], [CONF_GCC_LINKER_OPTS_STAGE2])
+
 AC_SUBST(CONF_CC_OPTS_STAGE0)
 AC_SUBST(CONF_CC_OPTS_STAGE1)
 AC_SUBST(CONF_CC_OPTS_STAGE2)


=====================================
m4/ghc_llvm_target.m4
=====================================
@@ -50,5 +50,10 @@ AC_DEFUN([GHC_LLVM_TARGET], [
 # require it.
 AC_DEFUN([GHC_LLVM_TARGET_SET_VAR], [
   AC_REQUIRE([FPTOOLS_SET_PLATFORMS_VARS])
-  GHC_LLVM_TARGET([$target],[$target_cpu],[$target_vendor],[$target_os],[LlvmTarget])
+  if test "$bootstrap_llvm_target" != ""
+  then
+    $5=$bootstrap_llvm_target
+  else
+    GHC_LLVM_TARGET([$target],[$target_cpu],[$target_vendor],[$target_os],[LlvmTarget])
+  fi
 ])



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/4c38ab8fefb355ccd25e6a6b0306ce4bf08d1287...e3669c95d66a4904f0ac1848a9565ad4cd634e45

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/4c38ab8fefb355ccd25e6a6b0306ce4bf08d1287...e3669c95d66a4904f0ac1848a9565ad4cd634e45
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