build system: add ability to specifiy config file

CMakeOptions.txt

@@ -26,6 +26,7 @@ endif()
 
 option(INCLUDE_EVERYTHING "Include everything disabled by default (for CI usage" OFF)
 set(OFF ${INCLUDE_EVERYTHING} CACHE INTERNAL "Replace any OFF by default with \${OFF} to have it covered by this option")
+set(EXTERNAL_CONFIG_FILE "" CACHE STRING "Change default config.h by config file at path")
 
 # raylib modules included
 cmake_dependent_option(SUPPORT_MODULE_RSHAPES "Include module: rshapes" ON CUSTOMIZE_BUILD ON)

cmake/CompileDefinitions.cmake

@@ -9,6 +9,11 @@ function(define_if target variable)
     endif ()
 endfunction()
 
+if (NOT ${EXTERNAL_CONFIG_FILE} STREQUAL "")
+    message(STATUS "Config file: ${EXTERNAL_CONFIG_FILE}")
+    target_compile_definitions("raylib" PUBLIC EXTERNAL_CONFIG_FILE=<${EXTERNAL_CONFIG_FILE}>)
+endif ()
+
 if (${CUSTOMIZE_BUILD})
     target_compile_definitions("raylib" PUBLIC EXTERNAL_CONFIG_FLAGS)
     define_if("raylib" USE_AUDIO)

src/Makefile

@@ -72,6 +72,10 @@ RAYLIB_RES_FILE      ?= ./raylib.dll.rc.data
 # if NONE, default config.h flags are used
 RAYLIB_CONFIG_FLAGS  ?= NONE
 
+# Define external config file
+# NOTE: Will load supplied fine instead of default ./config.h
+RAYLIB_CONFIG_FILE  ?= NONE
+
 # To define additional cflags: Use make CUSTOM_CFLAGS=""
 
 # Include raylib modules on compilation
@@ -311,17 +315,22 @@ endif
 #  -fno-strict-aliasing     jar_xm.h does shady stuff (breaks strict aliasing)
 CFLAGS = -Wall -D_DEFAULT_SOURCE -D$(PLATFORM) -D$(GRAPHICS) -Wno-missing-braces -Werror=pointer-arith -fno-strict-aliasing $(CUSTOM_CFLAGS)
 
-ifneq ($(RAYLIB_CONFIG_FLAGS), NONE)
+ifneq ($(RAYLIB_CONFIG_FLAGS),NONE)
-    CFLAGS += -DEXTERNAL_CONFIG_FLAGS $(RAYLIB_CONFIG_FLAGS)
+    CFLAGS += -DEXTERNAL_CONFIG_FLAGS=$(RAYLIB_CONFIG_FLAGS)
 endif
 
-ifeq ($(PLATFORM), PLATFORM_WEB)
+ifneq ($(RAYLIB_CONFIG_FILE),NONE)
+    $(warning $(RAYLIB_CONFIG_FILE))
+    CFLAGS += -DEXTERNAL_CONFIG_FILE="<$(RAYLIB_CONFIG_FILE)>"
+endif
+
+ifeq ($(PLATFORM),PLATFORM_WEB)
     CFLAGS += -std=gnu99
 else
     CFLAGS += -std=c99
 endif
 
-ifeq ($(PLATFORM_OS), LINUX)
+ifeq ($(PLATFORM_OS),LINUX)
     CFLAGS += -fPIC
 endif
 

src/raudio.c

@@ -75,8 +75,10 @@
 #else
     #include "raylib.h"                 // Declares module functions
     // Check if config flags have been externally provided on compilation line
-    #if !defined(EXTERNAL_CONFIG_FLAGS)
+    #if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
         #include "config.h"             // Defines module configuration flags
+    #elif defined(EXTERNAL_CONFIG_FILE)
+        #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
     #endif
     #include "utils.h"                  // Required for: fopen() Android mapping
 #endif

src/rcore.c

@@ -115,8 +115,10 @@
 #include "raylib.h"                 // Declares module functions
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"             // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
 #endif
 
 #include "utils.h"                  // Required for: TRACELOG() macros

src/rmodels.c

@@ -43,8 +43,10 @@
 #include "raylib.h"                 // Declares module functions
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"             // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
 #endif
 
 #if defined(SUPPORT_MODULE_RMODELS)

src/rshapes.c

@@ -48,8 +48,10 @@
 #include "raylib.h"                 // Declares module functions
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"             // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
 #endif
 
 #if defined(SUPPORT_MODULE_RSHAPES)

src/rtext.c

@@ -52,8 +52,10 @@
 #include "raylib.h"                 // Declares module functions
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"             // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
 #endif
 
 #if defined(SUPPORT_MODULE_RTEXT)

src/rtextures.c

@@ -64,8 +64,10 @@
 #include "raylib.h"             // Declares module functions
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"             // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE   // Defines module configuration flags in macro specified path
 #endif
 
 #if defined(SUPPORT_MODULE_RTEXTURES)

src/utils.c

@@ -33,8 +33,10 @@
 #include "raylib.h"                     // WARNING: Required for: LogType enum
 
 // Check if config flags have been externally provided on compilation line
-#if !defined(EXTERNAL_CONFIG_FLAGS)
+#if !defined(EXTERNAL_CONFIG_FLAGS) && !defined(EXTERNAL_CONFIG_FILE)
     #include "config.h"                 // Defines module configuration flags
+#elif defined(EXTERNAL_CONFIG_FILE)
+    #include EXTERNAL_CONFIG_FILE       // Defines module configuration flags in macro specified path
 #endif
 
 #include "utils.h"