Enable warnings for pre-C89 style definitions for gcc & Solaris Studio

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

diff --git a/configure.ac b/configure.ac
index 8cc5775..482f85b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -128,12 +128,12 @@ xcbincludedir='${includedir}/xcb'
 AC_SUBST(xcbincludedir)
 
 if  test "x$GCC" = xyes ; then
-    CWARNFLAGS="-Wall -pedantic -Wpointer-arith \
+    CWARNFLAGS="-Wall -pedantic -Wpointer-arith -Wold-style-definition \
                -Wstrict-prototypes -Wmissing-declarations -Wnested-externs"
 else
     AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
     if test "x$SUNCC" = "xyes"; then
-       CWARNFLAGS="-v"
+       CWARNFLAGS="-v -fd"
     fi
 fi
 AC_SUBST(CWARNFLAGS)