Hello!
On 2009-11-11 01:17, Joseph S. Myers wrote:
> On Sun, 8 Nov 2009, Thomas Schwinge wrote:
>
>> if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector
>> - -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
>> + -o /dev/null -c -x c /dev/null 1>&AS_MESSAGE_LOG_FD])
>
> Does this still work if you remove $LDFLAGS from the compilation line?
Sorry, I simply forgot to remove them. LDFLAGS are indeed not needed
here (and should usually be empty, anyway).
2009-11-11 Thomas Schwinge <thomas@xxxxxxxxxxxxxxxx>
* configure.in (libc_cv_ssp): Make this a compile-time check. Avoid
creating temporary files.
Index: configure.in
===================================================================
--- configure.in (revision 9207)
+++ configure.in (working copy)
@@ -1741,18 +1741,13 @@
AC_SUBST(fno_unit_at_a_time)
AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
-cat > conftest.c <<EOF
-int foo;
-main () { return 0;}
-EOF
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector
- -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector
+ -o /dev/null -c -x c /dev/null 1>&AS_MESSAGE_LOG_FD])
then
libc_cv_ssp=yes
else
libc_cv_ssp=no
-fi
-rm -f conftest*])
+fi])
AC_SUBST(libc_cv_ssp)
AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl
Regards,
Thomas
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