Add XORG_CWARNFLAGS & XORG_WITH_LINT for more compiler checking

Makefile.am

@@ -36,3 +36,9 @@ ChangeLog:
 	$(CHANGELOG_CMD)
 
 dist-hook: ChangeLog
+
+if LINT
+# Check source code with tools like lint & sparse
+lint:
+	(cd src && $(MAKE) $(MAKEFLAGS) lint)
+endif LINT

configure.ac

@@ -45,6 +45,7 @@ AM_CONFIG_HEADER([config.h])
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
 AC_PROG_CC
+XORG_CWARNFLAGS
 
 AH_TOP([#include "xorg-server.h"])
 
@@ -64,9 +65,6 @@ XORG_DRIVER_CHECK_EXT(XINPUT, inputproto)
 PKG_CHECK_MODULES(XORG, [xorg-server >= 1.0.99.901] xproto $REQUIRED_MODULES)
 sdkdir=$(pkg-config --variable=sdkdir xorg-server)
 
-CFLAGS="$CFLAGS $XORG_CFLAGS "' -I$(top_srcdir)/src'
-AC_SUBST([CFLAGS])
-
 # Checks for libraries.
 
 # Checks for header files.
@@ -89,6 +87,9 @@ case $host_os in
 esac
 AC_SUBST([OS_MOUSE_NAME])
 
+dnl Allow checking code with lint, sparse, etc.
+XORG_WITH_LINT
+
 XORG_MANPAGE_SECTIONS
 XORG_RELEASE_VERSION
 XORG_CHANGELOG

src/Makefile.am

@@ -18,6 +18,8 @@
 #  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+AM_CFLAGS = $(CWARNFLAGS) 
+AM_CPPFLAGS = $(XORG_CFLAGS) -I$(top_srcdir)/src
 
 # this is obnoxious:
 # -module lets us name the module exactly how we want
@@ -41,3 +43,11 @@ OS_SRCS = bsd_mouse.c hurd_mouse.c lnx_mouse.c sun_mouse.c
 	@OS_MOUSE_NAME@_mouse.c
 
 EXTRA_DIST = $(OS_SRCS)
+
+if LINT
+ALL_LINT_FLAGS=$(LINT_FLAGS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+                $(AM_CPPFLAGS) $(CPPFLAGS)
+
+lint:
+	$(LINT) $(ALL_LINT_FLAGS) $(@DRIVER_NAME@_drv_la_SOURCES)
+endif LINT