pkg/fontconfig: disable ubsan (reported upstream)

pkg/fontconfig/build.zig

@@ -90,8 +90,6 @@ pub fn buildFontconfig(
     defer flags.deinit();
 
     try flags.appendSlice(&.{
-        "-DFT2_BUILD_LIBRARY",
-
         "-DHAVE_DIRENT_H",
         "-DHAVE_FCNTL_H",
         "-DHAVE_STDLIB_H",
@@ -143,6 +141,10 @@ pub fn buildFontconfig(
         "-DHAVE_STDATOMIC_PRIMITIVES",
 
         "-DFC_GPERF_SIZE_T=size_t",
+
+        // https://gitlab.freedesktop.org/fontconfig/fontconfig/-/merge_requests/231
+        "-fno-sanitize=undefined",
+        "-fno-sanitize-trap=undefined",
     });
     const arch = target.cpu_arch orelse builtin.cpu.arch;
     switch (arch.ptrBitWidth()) {

pkg/fontconfig/config.zig

@@ -0,0 +1,8 @@
+const std = @import("std");
+const c = @import("c.zig");
+
+pub const Config = opaque {
+    pub fn destroy(self: *Config) void {
+        c.FcConfigDestroy(@ptrCast(*c.struct__FcConfig, self));
+    }
+};

pkg/fontconfig/init.zig

@@ -1,5 +1,22 @@
 const std = @import("std");
 const c = @import("c.zig");
+const Config = @import("config.zig").Config;
+
+pub fn init() bool {
+    return c.FcInit() == c.FcTrue;
+}
+
+pub fn fini() void {
+    c.FcFini();
+}
+
+pub fn initLoadConfig() *Config {
+    return @ptrCast(*Config, c.FcInitLoadConfig());
+}
+
+pub fn initLoadConfigAndFonts() *Config {
+    return @ptrCast(*Config, c.FcInitLoadConfigAndFonts());
+}
 
 pub fn version() u32 {
     return @intCast(u32, c.FcGetVersion());
@@ -9,3 +26,18 @@ test "version" {
     const testing = std.testing;
     try testing.expect(version() > 0);
 }
+
+test "init" {
+    try std.testing.expect(init());
+    defer fini();
+}
+
+test "initLoadConfig" {
+    var config = initLoadConfig();
+    defer config.destroy();
+}
+
+test "initLoadConfigAndFonts" {
+    var config = initLoadConfigAndFonts();
+    defer config.destroy();
+}

pkg/fontconfig/main.zig

@@ -1,5 +1,6 @@
 pub const c = @import("c.zig");
 pub usingnamespace @import("init.zig");
+pub usingnamespace @import("config.zig");
 
 test {
     @import("std").testing.refAllDecls(@This());

pkg/freetype/build.zig

@@ -88,6 +88,8 @@ pub fn buildFreetype(
 
         "-DHAVE_UNISTD_H",
         "-DHAVE_FCNTL_H",
+
+        //"-fno-sanitize=undefined",
     });
     if (opt.libpng.enabled) try flags.append("-DFT_CONFIG_OPTION_USE_PNG=1");
     if (opt.zlib.enabled) try flags.append("-DFT_CONFIG_OPTION_SYSTEM_ZLIB=1");