Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856).

[thirdparty/gcc.git] / libbacktrace / configure.ac

diff --git a/libbacktrace/configure.ac b/libbacktrace/configure.ac
index fd367451602b5c8d8386fd776648e6127d483662..c75fc9d7ebc7ed83f476dbbdbb5b5c96c68e8f7d 100644 (file)
--- a/libbacktrace/configure.ac
+++ b/libbacktrace/configure.ac
@@ -29,7 +29,6 @@
 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-AC_PREREQ(2.64)
 AC_INIT(package-unused, version-unused,, libbacktrace)
 AC_CONFIG_SRCDIR(backtrace.h)
 AC_CONFIG_HEADER(config.h)
@@ -305,12 +304,12 @@ if test "$have_mmap" = "no"; then
   ALLOC_FILE=alloc.lo
 else
   VIEW_FILE=mmapio.lo
-  AC_PREPROC_IFELSE([
+  AC_PREPROC_IFELSE([AC_LANG_SOURCE([
 #include <sys/mman.h>
 #if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
   #error no MAP_ANONYMOUS
 #endif
-], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
+])], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
 fi
 AC_SUBST(VIEW_FILE)
 AC_SUBST(ALLOC_FILE)
@@ -414,7 +413,7 @@ AC_CACHE_CHECK([whether -pthread is supported],
 [libgo_cv_lib_pthread],
 [CFLAGS_hold=$CFLAGS
 CFLAGS="$CFLAGS -pthread"
-AC_COMPILE_IFELSE([[int i;]],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])],
 [libgo_cv_lib_pthread=yes],
 [libgo_cv_lib_pthread=no])
 CFLAGS=$CFLAGS_hold])