mirror of
https://github.com/openwrt/openwrt.git
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49 lines
1.5 KiB
Diff
49 lines
1.5 KiB
Diff
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--- a/libc/aclocal.m4
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+++ b/libc/aclocal.m4
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@@ -88,6 +88,12 @@
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fi
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rm -fr contest*])
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+dnl Test a compiler option or options with an empty input file.
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+dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false])
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+AC_DEFUN([LIBC_TRY_CC_OPTION],
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+[AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])],
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+ [$2], [$3])])
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+
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AC_DEFUN([LIBC_PROG_BINUTILS],
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[# Was a --with-binutils option given?
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if test -n "$path_binutils"; then
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--- a/libc/configure
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+++ b/libc/configure
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@@ -7404,7 +7404,14 @@
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else
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libc_cv_cc_nofma=
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for opt in -ffp-contract=off -mno-fused-madd; do
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- LIBC_TRY_CC_OPTION($opt, libc_cv_cc_nofma=$opt; break)
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+ if { ac_try='${CC-cc} $opt -xc /dev/null -S -o /dev/null'
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+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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+ (eval $ac_try) 2>&5
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+ ac_status=$?
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+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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+ test $ac_status = 0; }; }; then :
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+ libc_cv_cc_nofma=$opt; break
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+fi
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done
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_nofma" >&5
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--- a/libc/configure.in
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+++ b/libc/configure.in
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@@ -2238,10 +2238,9 @@
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libc_cv_cc_submachine, [dnl
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libc_cv_cc_submachine=no
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for opt in "-march=$submachine" "-mcpu=$submachine"; do
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- if AC_TRY_COMMAND([${CC-cc} $opt -xc /dev/null -S -o /dev/null]); then
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+ LIBC_TRY_CC_OPTION([$opt], [
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libc_cv_cc_submachine="$opt"
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- break
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- fi
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+ break], [])
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done])
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if test "x$libc_cv_cc_submachine" = xno; then
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AC_MSG_ERROR([${CC-cc} does not support $submachine])
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