From aac329fd2a93651e79c2618f45e85dfbd99cd025 Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Mon, 10 Jun 2024 18:45:18 +0200
Subject: fix FTBS on non-udev target platforms (eg. FreeBSD)

On platforms that don't have libudev at all (eg. FreeBSD), the build
breaks. The only consumer, EvdevDeviceIsVirtual(), can live well with
just bailing out directly if libudev isn't present.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/driver/xf86-input-evdev/-/merge_requests/6>
---
 configure.ac | 2 +-
 src/evdev.c  | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index f62a33e..0f9cb01 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,7 +45,7 @@ XORG_DEFAULT_OPTIONS
 
 # Obtain compiler/linker options from server and required extensions
 PKG_CHECK_MODULES(XORG, [xorg-server >= 1.18] xproto [inputproto >= 2.1.99.3])
-PKG_CHECK_MODULES(UDEV, libudev)
+PKG_CHECK_MODULES(UDEV, libudev, [AC_DEFINE(HAVE_LIBUDEV, 1,[libudev support])])
 
 PKG_CHECK_MODULES(LIBEVDEV, [libevdev >= 0.4])
 PKG_CHECK_MODULES(MTDEV, mtdev)
diff --git a/src/evdev.c b/src/evdev.c
index 92fc330..b9555ef 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -39,7 +39,9 @@
 #include <X11/extensions/XI.h>
 
 #include <sys/stat.h>
+#ifdef HAVE_LIBUDEV
 #include <libudev.h>
+#endif
 #include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -225,6 +227,7 @@ EvdevIsDuplicate(InputInfoPtr pInfo)
 static BOOL
 EvdevDeviceIsVirtual(const char* devicenode)
 {
+#ifdef HAVE_LIBUDEV
     struct udev *udev = NULL;
     struct udev_device *device = NULL;
     struct stat st;
@@ -255,6 +258,9 @@ out:
     udev_device_unref(device);
     udev_unref(udev);
     return rc;
+#else
+    return FALSE;
+#endif
 }
 
 
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