Optional cotire support to speed up builds (disabled by default)

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "cotire"]
+	path = cotire
+	url = https://github.com/sakra/cotire

CMakeLists.txt

@@ -16,6 +16,7 @@ option(NO_AUDIO "Build without audio support" OFF)
 option(DEBUG_USE_UBSAN "Enable the Undefined Behaviour Sanitizer (UBSan) in debug builds. Only disable if the compiler or target platform doesn't support it." ON)
 option(DEBUG_USE_ASAN "Enable the Address Sanitizer (ASan) and leak detection in debug builds." OFF)
 option(RELEASE_USE_LTO "Enable Link Time Optimization in release builds." ON)
+option(USE_COTIRE "Use cotire (COmpile TIme REducer) to speed up builds" OFF)
 
 add_subdirectory(src)
 

cotire

@@ -0,0 +1 @@
+Subproject commit 3d63330c99fde1844e3ad63c98025d18d38019f2

src/CMakeLists.txt

@@ -1,4 +1,10 @@
 
+if(USE_COTIRE)
+	set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" "${PROJECT_SOURCE_DIR}/cotire/CMake")
+	cmake_policy(SET CMP0011 NEW)
+	include(cotire)
+endif()
+
 find_package(PkgConfig REQUIRED)
 
 if(LINK_TO_LIBGL)
@@ -261,3 +267,7 @@ elseif(RELATIVE)
 else()
 	install(TARGETS taisei RUNTIME DESTINATION bin)
 endif()
+
+if(USE_COTIRE)
+	cotire(taisei)
+endif()

src/util.c

@@ -333,14 +333,13 @@ char* read_all(const char *filename, int *outsize) {
 }
 
 bool parse_keyvalue_stream_cb(SDL_RWops *strm, KVCallback callback, void *data) {
-    static const size_t bufsize = 256;
     static const char separator[] = "= ";
 
-    char buffer[bufsize];
+    char buffer[256];
     int lineno = 0;
     int errors = 0;
 
-    loopstart: while(SDL_RWgets(strm, buffer, bufsize)) {
+    loopstart: while(SDL_RWgets(strm, buffer, sizeof(buffer))) {
         char *ptr = buffer;
         char *sep, *key, *val;