Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC

Commits:

• 316e99e8
  by Ben Gamari at 2025-12-08T15:05:28+05:30

  Revert "configure: do not set LLC/OPT/LLVMAS fallback values when FIND_LLVM_PROG fails"
  
  While dropping these fallbacks is likely the right thing in the long
  run, doing so now makes it needlessly difficult for users to use the
  LLVM backend. See #26209. This will change once `ghc-toolchain` becomes
  the default path.
  
  This reverts commit 4eb5ad09cf93caa5791a735baa0e7ba86b916f2a.
  
  (cherry picked from commit 9922faa74dcf7975def67ab82d27da05da7d29f2)
  

1 changed file:

• m4/fp_settings.m4

Changes:

         SettingsWindresCommand="$WindresCmd"

     fi

+    # Fallback values for LLVM tools. See #26209.

+    if test -z "$LlcCmd"; then

+        LlcCmd="llc"

+    fi

+

+    if test -z "$OptCmd"; then

+        OptCmd="opt"

+    fi

+

+    if test -z "$LlvmAsCmd"; then

+        LlvmAsCmd="clang"

+    fi

+

     # LLVM backend tools

     SettingsLlcCommand="$LlcCmd"

     SettingsOptCommand="$OptCmd"