configure: fixup clang stupidity

[fio.git] / configure

diff --git a/configure b/configure
index e459d63f2c161f8e99d0886263099dee6be13d53..a3f83d34c415e867b2a4b55dc91700d2a1a1db0e 100755 (executable)
--- a/configure
+++ b/configure
@@ -547,7 +547,7 @@ fi
 echo "Solaris AIO support           $solaris_aio"
 
 ##########################################
-# __sync_fetch_and_and test
+# __sync_fetch_and_add test
 sfaa="no"
 cat > $TMPC << EOF
 static int sfaa(int *ptr)
@@ -1492,6 +1492,37 @@ if compile_prog "" "" "getmntinfo"; then
 fi
 echo "getmntinfo                    $getmntinfo"
 
+##########################################
+# Check whether we have _Static_assert
+static_assert="no"
+cat > $TMPC << EOF
+#include <assert.h>
+#include <stdlib.h>
+#undef offsetof
+#ifdef __compiler_offsetof
+#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+#define container_of(ptr, type, member) ({                     \
+       const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+       (type *)( (char *)__mptr - offsetof(type,member) );})
+
+struct foo {
+  int a, b;
+};
+
+int main(int argc, char **argv)
+{
+  _Static_assert(offsetof(struct foo, a) == 0 , "Check");
+  return 0 ;
+}
+EOF
+if compile_prog "" "" "static_assert"; then
+    static_assert="yes"
+fi
+echo "Static Assert                 $static_assert"
 #############################################################################
 
 if test "$wordsize" = "64" ; then
@@ -1671,6 +1702,9 @@ fi
 if test "$getmntinfo" = "yes" ; then
   output_sym "CONFIG_GETMNTINFO"
 fi
+if test "$static_assert" = "yes" ; then
+  output_sym "CONFIG_STATIC_ASSERT"
+fi
 
 if test "$zlib" = "no" ; then
   echo "Consider installing zlib-dev (zlib-devel), some fio features depend on it."