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, 2 insertions, 0 deletions

diff --git a/sway/main.c b/sway/main.c
index eb103a1e..157c61b3 100644
--- a/sway/main.c
+++ b/sway/main.c
@@ -152,6 +152,7 @@ static void security_sanity_check() {
                 sway_log(L_ERROR,
                         "!! DANGER !! /proc is not available - sway CANNOT enforce security rules!");
         }
+#ifdef __linux__
         cap_flag_value_t v;
         cap_t cap = cap_get_proc();
         if (!cap || cap_get_flag(cap, CAP_SYS_PTRACE, CAP_PERMITTED, &v) != 0 || v != CAP_SET) {
@@ -161,6 +162,7 @@ static void security_sanity_check() {
         if (cap) {
                 cap_free(cap);
         }
+#endif
         if (!stat(SYSCONFDIR "/sway", &s)) {
                 if (s.st_uid != 0 || s.st_gid != 0
                                 || (s.st_mode & S_IWGRP) || (s.st_mode & S_IWOTH)) {