[PATCH xserver] build: Enable vidmode independently from Xorg

[Rui Matos]

This allows building Xwayland without Xorg and still include the
vidmode extension.

v2: Use PKG_CHECK_EXISTS instead of PKG_CHECK_MODULES

Signed-off-by: Rui Matos <tiagomatos at gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 configure.ac | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/configure.ac b/configure.ac
index c166841..c57a5ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1509,6 +1509,14 @@ if test "x$XDMAUTH" = xyes; then
 	fi
 fi
 
+if test "x$XF86VIDMODE" = xauto; then
+	PKG_CHECK_EXISTS($VIDMODEPROTO, [XF86VIDMODE=yes], [XF86VIDMODE=no])
+fi
+if test "x$XF86VIDMODE" = xyes; then
+	AC_DEFINE(XF86VIDMODE, 1, [Support XFree86 Video Mode extension])
+fi
+AM_CONDITIONAL([XF86VIDMODE], [test "x$XF86VIDMODE" = xyes])
+
 AC_DEFINE_DIR(COMPILEDDEFAULTFONTPATH, FONTPATH, [Default font path])
 AC_DEFINE_DIR(SERVER_MISC_CONFIG_PATH, SERVERCONFIG, [Server miscellaneous config path])
 AC_DEFINE_DIR(BASE_FONT_PATH, FONTROOTDIR, [Default base font path])
@@ -2018,13 +2026,8 @@ if test "x$XORG" = xyes; then
 		AC_DEFINE(XFreeXDGA, 1, [Build XDGA support])
 	fi
 
-	if test "x$XF86VIDMODE" = xauto; then
-		PKG_CHECK_MODULES(XF86VIDMODE, $VIDMODEPROTO, [XF86VIDMODE=yes], [XF86VIDMODE=no])
-	fi
 	if test "x$XF86VIDMODE" = xyes; then
 		XORG_MODULES="$XORG_MODULES $VIDMODEPROTO"
-		PKG_CHECK_MODULES(XF86VIDMODE, $VIDMODEPROTO)
-		AC_DEFINE(XF86VIDMODE, 1, [Support XFree86 Video Mode extension])
 	fi
 
 	if test -n "$XORG_MODULES"; then
@@ -2106,7 +2109,6 @@ AM_CONDITIONAL([LNXACPI], [test "x$linux_acpi" = xyes])
 AM_CONDITIONAL([LNXAPM], [test "x$linux_apm" = xyes])
 AM_CONDITIONAL([SOLARIS_VT], [test "x$solaris_vt" = xyes])
 AM_CONDITIONAL([DGA], [test "x$DGA" = xyes])
-AM_CONDITIONAL([XF86VIDMODE], [test "x$XF86VIDMODE" = xyes])
 AM_CONDITIONAL([XORG_BUS_PLATFORM], [test "x$CONFIG_UDEV_KMS" = xyes])
 AM_CONDITIONAL([XORG_DRIVER_MODESETTING], [test "x$XORG_DRIVER_MODESETTING" = xyes])
 
@@ -2452,7 +2454,11 @@ AM_CONDITIONAL(XFAKESERVER, [test "x$KDRIVE" = xyes && test "x$XFAKE" = xyes])
 
 dnl Xwayland DDX
 
-PKG_CHECK_MODULES(XWAYLANDMODULES, [wayland-client >= 1.3.0 libdrm epoxy], [have_xwayland=yes], [have_xwayland=no])
+XWAYLANDMODULES="wayland-client >= 1.3.0 libdrm epoxy"
+if test "x$XF86VIDMODE" = xyes; then
+	XWAYLANDMODULES="$XWAYLANDMODULES $VIDMODEPROTO"
+fi
+PKG_CHECK_MODULES(XWAYLANDMODULES, [$XWAYLANDMODULES], [have_xwayland=yes], [have_xwayland=no])
 AC_MSG_CHECKING([whether to build Xwayland DDX])
 if test "x$XWAYLAND" = xauto; then
    XWAYLAND="$have_xwayland"
-- 
2.5.0