From b6bd9176b64e18185922e50d61476e065ed270bd Mon Sep 17 00:00:00 2001
From: b-aaz <85005689+b-aaz@users.noreply.github.com>
Date: Thu, 10 Jul 2025 22:11:57 +0000
Subject: [PATCH] configure: Automatically detect the default xorg-module-dir.

The module directory has changed to a per ABI folder in the xlibre-xserver.
Now the default value of `xorg-module-dir` will be detected from the `moduledir` variable in xorg-server.pc.

Signed-off-by: b-aaz <b-aazbsd.proton.me>
---
 Makefile.am  | 4 ++++
 configure.ac | 5 +++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 88b2d9f..bf9985f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -18,6 +18,10 @@
 #  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.
 
+# During distcheck, system locations (as provided by pkg-config) may
+# not be writable; provide instead relative locations.
+DISTCHECK_CONFIGURE_FLAGS = --with-xorg-module-dir='$${libdir}/xorg/modules'
+
 SUBDIRS = src man
 MAINTAINERCLEANFILES = ChangeLog INSTALL
 
diff --git a/configure.ac b/configure.ac
index 741f046..004707d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,11 +46,12 @@ AC_PROG_LIBTOOL
 AH_TOP([#include "xorg-server.h"])
 
 # Define a configure option for an alternate module directory
+PKG_PROG_PKG_CONFIG([0.25])
 AC_ARG_WITH(xorg-module-dir,
             AS_HELP_STRING([--with-xorg-module-dir=DIR],
-                           [Default xorg module directory [[default=$libdir/xorg/modules]]]),
+                           [Default xorg module directory]),
             [moduledir="$withval"],
-            [moduledir="$libdir/xorg/modules"])
+            [moduledir=`$PKG_CONFIG --variable=moduledir xorg-server`])
 
 # Store the list of server defined optional extensions in REQUIRED_MODULES
 XORG_DRIVER_CHECK_EXT(RANDR, randrproto)