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| author | Ben Gamari <ben@smart-cactus.org> | 2021-04-02 11:52:47 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-05-05 05:42:38 -0400 |
| commit | 7ffbdc3fa603c6411249ba9b758cf8f109c5fb30 (patch) | |
| tree | 8a05d6e03ce2790e6e59651c824e569fee088d33 /m4/fp_cc_linker_flag_try.m4 | |
| parent | 6acadb79afe685c635fd255f90551a0fbfcbe3dc (diff) | |
| download | haskell-7ffbdc3fa603c6411249ba9b758cf8f109c5fb30.tar.gz | |
Break up aclocal.m4
Diffstat (limited to 'm4/fp_cc_linker_flag_try.m4')
| -rw-r--r-- | m4/fp_cc_linker_flag_try.m4 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/m4/fp_cc_linker_flag_try.m4 b/m4/fp_cc_linker_flag_try.m4 new file mode 100644 index 0000000000..69af387d5d --- /dev/null +++ b/m4/fp_cc_linker_flag_try.m4 @@ -0,0 +1,20 @@ +# FP_CC_LINKER_FLAG_TRY() +# -------------------- +# Try a particular linker to see whether we can use it. In particular, determine +# whether we can convince gcc to use it via a -fuse-ld=... flag. +# +# $1 = the name of the linker to try +# $2 = the variable to set with the appropriate GHC flag if the linker is +# found to be usable +AC_DEFUN([FP_CC_LINKER_FLAG_TRY], [ + AC_MSG_CHECKING([whether C compiler supports -fuse-ld=$1]) + echo 'int main(void) {return 0;}' > conftest.c + if $CC -o conftest.o -fuse-ld=$1 conftest.c > /dev/null 2>&1 + then + $2="-fuse-ld=$1" + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + rm -f conftest.c conftest.o +]) |