From f03931201b848fae6a21f44cd151e6f4af6e6988 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  | 5 ++++-
 configure.ac | 7 ++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index a447d61..cdcc414 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,7 +19,10 @@
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
-DISTCHECK_CONFIGURE_FLAGS = --with-sdkdir='$${includedir}/xorg'
+# During distcheck, system locations (as provided by pkg-config) may
+# not be writable; provide instead relative locations.
+DISTCHECK_CONFIGURE_FLAGS = --with-xorg-module-dir='$${libdir}/xorg/modules' \
+                            --with-sdkdir='$${includedir}/xorg'
 
 SUBDIRS = src include man test
 MAINTAINERCLEANFILES = ChangeLog INSTALL
diff --git a/configure.ac b/configure.ac
index 965b8a4..9699bad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -115,11 +115,12 @@ LIBS=$OLD_LIBS
 CFLAGS=$OLD_CFLAGS
 
 # Define a configure option for an alternate input module directory
+PKG_PROG_PKG_CONFIG([0.25])
 AC_ARG_WITH(xorg-module-dir,
-            AC_HELP_STRING([--with-xorg-module-dir=DIR],
-                           [Default xorg module directory [[default=$libdir/xorg/modules]]]),
+            AS_HELP_STRING([--with-xorg-module-dir=DIR],
+                           [Default xorg module directory]),
             [moduledir="$withval"],
-            [moduledir="$libdir/xorg/modules"])
+            [moduledir=`$PKG_CONFIG --variable=moduledir xorg-server`])
 inputdir=${moduledir}/input
 AC_SUBST(inputdir)