From: nobled <nobled@dreamwidth.org>
Date: Mon, 30 Aug 2010 00:03:37 +0000 (-0400)
Subject: Make configure work with clang
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2a50187a923eb8950bc8b63f50eaea4704d6dc36;p=mesa.git

Make configure work with clang

It was mistaking clang for gcc and deciding its version
was too low.
---

diff --git a/configure.ac b/configure.ac
index 45188544fb0..cf2e200db3f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,9 +48,23 @@ solaris*)
     ;;
 esac
 
+dnl clang is mostly GCC-compatible, but its version is much lower,
+dnl so we have to check for it.
+AC_MSG_CHECKING([if compiling with clang])
+
+AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([], [[
+#ifndef __clang__
+       not clang
+#endif
+]])],
+[CLANG=yes], [CLANG=no])
+
+AC_MSG_RESULT([$CLANG])
+
 dnl If we're using GCC, make sure that it is at least version 3.3.0.  Older
 dnl versions are explictly not supported.
-if test "x$GCC" = xyes; then
+if test "x$GCC" = xyes -a "x$CLANG" = xno; then
     AC_MSG_CHECKING([whether gcc version is sufficient])
     major=0
     minor=0