[Git][ghc/ghc][master] configure: Correctly report when subsections-via-symbols is disabled

[Marge Bot (@marge-bot)]

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC


Commits:
e4169ba9 by Ben Gamari at 2024-09-18T07:55:28-04:00
configure: Correctly report when subsections-via-symbols is disabled

As noted in #24962, currently subsections-via-symbols is disabled on
AArch64/Darwin due to alleged breakage. However, `configure` reports to
the user that it is enabled. Fix this.

- - - - -


1 changed file:

- m4/fptools_set_haskell_platform_vars.m4


Changes:

=====================================
m4/fptools_set_haskell_platform_vars.m4
=====================================
@@ -154,12 +154,14 @@ AC_DEFUN([GHC_SUBSECTIONS_VIA_SYMBOLS],
     dnl See Note [autoconf assembler checks and -flto]
     AC_LINK_IFELSE(
         [AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])],
-        [AC_MSG_RESULT(yes)
+        [
          if test x"$TargetArch" = xaarch64; then
             dnl subsections via symbols is busted on arm64
             TargetHasSubsectionsViaSymbols=NO
+            AC_MSG_RESULT([no, subsections-via-symbols are broken on AArch64/Darwin (GHC 24962)])
          else
             TargetHasSubsectionsViaSymbols=YES
+            AC_MSG_RESULT(yes)
          fi
         ],
         [TargetHasSubsectionsViaSymbols=NO



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e4169ba910cefbbf9e8fe5770c3f4b43f24bb509

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e4169ba910cefbbf9e8fe5770c3f4b43f24bb509
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