X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=configure.ac;h=310e68a03d158b531b307ad8962dbe46752ae143;hb=4bfad947161d93ce1b566093211bd05f368bdffe;hp=ddd71d3d13b2d4676442e2011a00905352900d15;hpb=756d59b7ebd92c58dd8d2f8757ccb6e633b73f90;p=xboard.git

diff --git a/configure.ac b/configure.ac
index ddd71d3..310e68a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,7 +28,7 @@ dnl| to regenerate configure.  Then submit your changes to be folded into
 dnl| the standard version of xboard.
 
 dnl| define second argument as VERSION.PATCHLEVEL. e.g. 4.4.0j
-AC_INIT([xboard],[master-20120410],[bug-xboard@gnu.org])
+AC_INIT([xboard],[master-20120430],[bug-xboard@gnu.org])
 
 dnl| need this to be able to compile some files in a subdir (filebrowser)
 AM_INIT_AUTOMAKE([subdir-objects])
@@ -110,6 +110,15 @@ AC_CHECK_FUNC(setlocale, [],
 
 AC_CHECK_LIB(seq, getpseudotty)
 
+dnl | add compiler warnings only if compiler understands them
+AC_MSG_CHECKING(whether compiler understands -Wall -Wno-parentheses)
+SAVE_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wall -Wno-parentheses"
+AC_TRY_COMPILE([],[],
+  AC_MSG_RESULT(yes),
+  AC_MSG_RESULT(no)
+  CFLAGS="$SAVE_CFLAGS")
+
 
 dnl | check for X-libraries
 AC_PATH_XTRA