* config.make.in (fno-unit-at-a-time): Define.

[thirdparty/glibc.git] / configure.in

diff --git a/configure.in b/configure.in
index 9314a3223a96f0b8f015ff0900a204715e667cb0..5dab7d696073d71c89a47272b10a902d813ca740 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1359,6 +1359,7 @@ EOF
   AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl
   cat > conftest.c <<EOF
 int foo;
+main () { return 0;}
 EOF
   if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie
                              -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
@@ -1372,6 +1373,23 @@ EOF
   AC_SUBST(libc_cv_fpie)
 fi
 
+AC_CACHE_CHECK(for -fno-unit-at-a-time, libc_cv_fno_unit_at_a_time, [dnl
+cat > conftest.c <<EOF
+int foo;
+EOF
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-unit-at-a-time
+                           conftest.c 1>&AS_MESSAGE_LOG_FD])
+then
+  libc_cv_fno_unit_at_a_time=yes
+else
+  libc_cv_fno_unit_at_a_time=no
+fi
+rm -f conftest*])
+if test $libc_cv_fno_unit_at_a_time = yes; then
+  fno_unit_at_a_time=-fno-unit-at-a-time
+fi
+AC_SUBST(fno_unit_at_a_time)
+
 if test $elf != yes; then
   AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
                 [AC_TRY_COMPILE(, [asm (".section .init");