Changeset: e5c586271fd7 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=e5c586271fd7
Modified Files:
configure.ag
Branch: Aug2011
Log Message:
fixed X_CFLAGS (--enable-strict) for gcc 4.3.* & gcc 4.4.*:
With gcc 4.3.* & gcc 4.4.4, when using "-Wlogical-op", the compiler complains
about
"logical '||' with non-zero constant will always evaluate as true" and alike
with, e.g., "(argc == 0 || strchr(av[0], av[0][0]) != NULL)".
Hence, we use such code when testing which warnings options do (not) work,
and thus omit -Wlogical-op for compilers like gcc 4.3 & 4.4 where it does not
work.
diffs (21 lines):
diff --git a/configure.ag b/configure.ag
--- a/configure.ag
+++ b/configure.ag
@@ -512,11 +512,15 @@ AC_DEFUN([MCHECK_ADD_FLAG],
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
-int main(void) {
+int main(int argc, char **av) {
char buf[24];
double d = atof("4.2");
- snprintf(buf, sizeof(buf), "%f", d);
+ if (argc == 0 || strchr(av[0], av[0][0]) != NULL)
+ snprintf(buf, sizeof(buf), "%f", d);
return 0;
}
]])],
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