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configure: test not just compiling but linking with -march/-mtune

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pcc wrongly passes any option beginning with -m to the linker, and
will break at link time if these options were added to CFLAGS. testing
linking lets us catch this at configure time and skip them.
This commit is contained in:
Rich Felker 2012-10-25 14:52:12 -04:00
commit 80a45458e0
1 changed files with 2 additions and 2 deletions
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4
configure vendored
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@ -269,8 +269,8 @@ tryflag CFLAGS_AUTO -falign-jumps=1
# work anyway (issues with atomic ops).
#
if test "$ARCH" = "i386" ; then
fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryflag CFLAGS_AUTO -march=i486
fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryflag CFLAGS_AUTO -mtune=generic
fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -march=i486
fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -mtune=generic
fi
if test "x$warnings" = xyes ; then