diff options
Diffstat (limited to 'm4/find_merge_objects.m4')
| -rw-r--r-- | m4/find_merge_objects.m4 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/m4/find_merge_objects.m4 b/m4/find_merge_objects.m4 new file mode 100644 index 0000000000..fc16e57050 --- /dev/null +++ b/m4/find_merge_objects.m4 @@ -0,0 +1,29 @@ +# FIND_MERGE_OBJECTS +# ------------------ +# Find which linker to use to merge object files. +# +# See Note [Merging object files for GHCi] in GHC.Driver.Pipeline. +AC_DEFUN([FIND_MERGE_OBJECTS],[ + AC_REQUIRE([FIND_LD]) + + if test -z "$MergeObjsCmd"; then + MergeObjsCmd="$LD" + fi + if test -z "$MergeObjsArgs"; then + MergeObjsArgs="-r" + fi + + CHECK_FOR_GOLD_T22266($MergeObjsCmd) + if test "$result" = "1"; then + AC_MSG_NOTICE([$MergeObjsCmd is broken due to binutils 22266, looking for another linker...]) + MergeObjsCmd="" + AC_CHECK_TARGET_TOOL([MergeObjsCmd], [ld]) + CHECK_FOR_GOLD_T22266($MergeObjsCmd) + if test "$result" = "1"; then + AC_MSG_ERROR([Linker is affected by binutils 22266 but couldn't find another unaffected linker. Please set the MergeObjsCmd variable to a functional linker.]) + fi + fi + + AC_SUBST([MergeObjsCmd]) + AC_SUBST([MergeObjsArgs]) +]) |