[tor-commits] [tor/master] Only use -Qunused-arguments when building with clang. fix on 5210 fix.

[nickm at torproject.org]

commit 7826eef93e8a3b1f90198596bfd19b589f58cc88
Author: Nick Mathewson <nickm at torproject.org>
Date:   Wed Jun 13 16:37:23 2012 -0400

    Only use -Qunused-arguments when building with clang. fix on 5210 fix.
---
 configure.in |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/configure.in b/configure.in
index 18869a1..e690cb2 100644
--- a/configure.in
+++ b/configure.in
@@ -563,9 +563,16 @@ dnl use it with a build of a library.
 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
 
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
+#if !defined(__clang__)
+#error
+#endif])], have_clang=yes, have_clang=no)
+
 if test x$enable_gcc_hardening != xno; then
     CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
-    TOR_CHECK_CFLAGS(-Qunused-arguments)
+    if test x$have_clang = xyes; then
+        TOR_CHECK_CFLAGS(-Qunused-arguments)
+    fi
     TOR_CHECK_CFLAGS(-fstack-protector-all)
     TOR_CHECK_CFLAGS(-Wstack-protector)
     TOR_CHECK_CFLAGS(-fwrapv)
@@ -1243,11 +1250,6 @@ if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xy
 #error
 #endif])], have_gcc43=yes, have_gcc43=no)
 
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
-#if !defined(__clang__)
-#error
-#endif])], have_clang=yes, have_clang=no)
-
   save_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS -Wshorten-64-to-32"
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,