[WORKSPACE, glib.BUILD, q3map] Add local version of glib repository

This is currently for use on MacOS only. On Linux, we can build glib
from source.

Author: tkoeppe

Diff for: WORKSPACE

@@ -153,6 +153,12 @@ http_archive(
 )
 
 # TODO: Replace with hermetic build
+new_local_repository(
+    name = "glib_local_archive",
+    build_file = "@//bazel:glib.BUILD",
+    path ="/usr/local/Cellar/glib/2.68.3",
+)
+
 new_local_repository(
     name = "sdl_system",
     build_file = "@//bazel:sdl.BUILD",

Diff for: bazel/glib.BUILD

@@ -244,3 +244,18 @@ cc_library(
     visibility = ["//visibility:public"],
     deps = [":charset"],
 )
+
+cc_library(
+    name = "glib_local",
+    srcs = ["lib/libglib-2.0.0.dylib"],
+    hdrs = glob([
+        "include/glib-2.0/**/*.h",
+        "lib/glib-2.0/**/*.h",
+    ]),
+    includes = [
+        "include/glib-2.0",
+        "lib/glib-2.0/include",
+    ],
+    linkopts = ["-liconv"],
+    visibility = ["//visibility:public"],
+)

Diff for: q3map2/BUILD

@@ -91,9 +91,11 @@ cc_binary(
         ":picomodel",
         "//third_party/md:md4",
         "//third_party/md:md5",
-        "@glib_archive//:glib",
         "@jpeg_archive//:jpeg",
         "@libxml_archive//:libxml",
         "@png_archive//:png",
-    ],
+    ] + select({
+        "//:is_linux": ["@glib_archive//:glib"],
+        "//:is_macos": ["@glib_local_archive//:glib_local"],
+    }),
 )