commit 8812d241f0fb55293b9559eb3475f24b2f17c590
author Alexandre Julliard <julliard@winehq.org> Sun Jun 14 11:19:54 2009 +0200
committer Alexandre Julliard <julliard@winehq.org> Sun Jun 14 11:19:54 2009 +0200
tree 66d0610f805792d925ab27f58a815d33fff95144
parent fd78e6e3a51091a8cbe049237a55347390d9570b

configure: Make sure that gcc is recent enough for building 64-bit code.

configure.ac

diff --git a/configure.ac b/configure.ac
index 4b89c19..48c76fe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -139,6 +139,14 @@
       AC_SUBST(TARGETFLAGS,"-m32")
       enable_win16=${enable_win16:-yes}
     else
+      if test "x${GCC}" = "xyes"
+      then
+        AC_MSG_CHECKING([whether $CC supports __builtin_ms_va_list])
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>]], [[void func(__builtin_ms_va_list *args);]])],
+                          [AC_MSG_RESULT([yes])],
+                          [AC_MSG_RESULT([no])
+                           AC_MSG_ERROR([You need gcc >= 4.4 to build Wine as 64-bit.])])
+      fi
       AC_SUBST(TARGETFLAGS,"-m64")
     fi
     ;;