Accept clang-2.9 as an allowable compiler.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12066

diff --git a/configure.in b/configure.in
index 1c6560dac61833fe85fe97ad68adedb6392990ce..7dea144047e95fdda0dd4f3a5691647fc2655284 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -100,14 +100,25 @@ AC_MSG_CHECKING([for a supported version of gcc])
 
 [gcc_version=`${CC} --version | head -n 1 | $SED 's/^[^0-9]*\([0-9.]*\).*$/\1/'`]
 
-case "${gcc_version}" in
-     2.*)
-       AC_MSG_RESULT([no (${gcc_version})])
-       AC_MSG_ERROR([please use a recent (>= gcc-3.0) version of gcc])
+is_clang="notclang"
+if test "x`${CC} --version | head -n 1 | $SED 's/\(clang\) version.*/\1/'`" = "xclang" ; then
+   is_clang="clang"
+fi
+
+case "${is_clang}-${gcc_version}" in
+     notclang-3.*)
+       AC_MSG_RESULT([ok (${gcc_version})])
        ;;
-     *)
+     notclang-4.*)
        AC_MSG_RESULT([ok (${gcc_version})])
        ;;
+     clang-2.9)
+       AC_MSG_RESULT([ok (clang-${gcc_version})])
+       ;;
+     *)
+       AC_MSG_RESULT([no (${gcc_version})])
+       AC_MSG_ERROR([please use gcc >= 3.0 or clang >= 2.9])
+       ;;
 esac
 
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