Fix build on FreeBSD

- Make sure CMake always finds absolute paths for Cairo, Pango and GdkPixbuf
- Add forgotten json-c include path to swaymsg/CMakeLists.txt
- Disable -Werror because of assert warnings
- Add correct /proc/pid/file path for FreeBSD
- Use libepoll-shim on FreeBSD
- Only use Linux capabilities on, well, Linux

1 files changed, 4 insertions, 0 deletions

diff --git a/sway/security.c b/sway/security.c
index f16fdd1f..9cccd62e 100644
--- a/sway/security.c
+++ b/sway/security.c
@@ -28,7 +28,11 @@ struct command_policy *alloc_command_policy(const char *command) {
 }
 
 enum secure_feature get_feature_policy(pid_t pid) {
+#ifdef __FreeBSD__
+        const char *fmt = "/proc/%d/file";
+#else
         const char *fmt = "/proc/%d/exe";
+#endif
         int pathlen = snprintf(NULL, 0, fmt, pid);
         char *path = malloc(pathlen + 1);
         snprintf(path, pathlen + 1, fmt, pid);