Add headless mode

CMakeLists.txt

@@ -50,7 +50,7 @@ if(NOT TARGET uninstall AND PROJECT_IS_TOP_LEVEL)
     COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
 endif()
 
-if (${BUILD_EXAMPLES})
+if (${BUILD_EXAMPLES} AND NOT ${PLATFORM} MATCHES "Headless")
   MESSAGE(STATUS "Building examples is enabled")
   add_subdirectory(examples)
 endif()

CMakeOptions.txt

@@ -6,7 +6,7 @@ if(EMSCRIPTEN)
     # When configuring web builds with "emcmake cmake -B build -S .", set PLATFORM to Web by default
     SET(PLATFORM Web CACHE STRING "Platform to build for.")
 endif()
-enum_option(PLATFORM "Desktop;Web;Android;Raspberry Pi;DRM;SDL" "Platform to build for.")
+enum_option(PLATFORM "Desktop;Web;Android;Raspberry Pi;DRM;SDL;Headless" "Platform to build for.")
 
 enum_option(OPENGL_VERSION "OFF;4.3;3.3;2.1;1.1;ES 2.0;ES 3.0" "Force a specific OpenGL Version?")
 

cmake/LibraryConfigurations.cmake

@@ -132,7 +132,11 @@ elseif ("${PLATFORM}" MATCHES "SDL")
 			add_compile_definitions(USING_SDL2_PACKAGE)
 		endif()
 	endif()	
-endif ()
+elseif(${PLATFORM} MATCHES "Headless")
+    message(STATUS "Building raylib in headless mode")
+    set(PLATFORM_CPP "PLATFORM_HEADLESS")
+    set(CUSTOMIZE_BUILD OFF)
+endif()
 
 if (NOT ${OPENGL_VERSION} MATCHES "OFF")
     set(SUGGESTED_GRAPHICS "${GRAPHICS}")

examples/CMakeLists.txt

@@ -113,6 +113,8 @@ elseif ("${PLATFORM}" STREQUAL "DRM")
     list(REMOVE_ITEM example_sources ${CMAKE_CURRENT_SOURCE_DIR}/others/rlgl_standalone.c)
     list(REMOVE_ITEM example_sources ${CMAKE_CURRENT_SOURCE_DIR}/others/raylib_opengl_interop.c)
 
+elseif(${PLATFORM} MATCHES "Headless")
+    list(REMOVE_ITEM example_sources ${CMAKE_CURRENT_SOURCE_DIR}/others/raylib_opengl_interop.c)
 elseif (NOT SUPPORT_GESTURES_SYSTEM)
     # Items requiring gestures system
     list(REMOVE_ITEM example_sources ${CMAKE_CURRENT_SOURCE_DIR}/textures/textures_mouse_painting.c)

src/Makefile

@@ -325,7 +325,11 @@ endif
 #  -D_GNU_SOURCE            access to lots of nonstandard GNU/Linux extension functions
 #  -Werror=pointer-arith    catch unportable code that does direct arithmetic on void pointers
 #  -fno-strict-aliasing     jar_xm.h does shady stuff (breaks strict aliasing)
-CFLAGS = -Wall -D_GNU_SOURCE -D$(TARGET_PLATFORM) -D$(GRAPHICS) -Wno-missing-braces -Werror=pointer-arith -fno-strict-aliasing
+CFLAGS      = -Wall -D_GNU_SOURCE -D$(TARGET_PLATFORM)
+ifdef GRAPHICS
+    CFLAGS += -D$(GRAPHICS)
+endif
+CFLAGS     += -Wno-missing-braces -Werror=pointer-arith -fno-strict-aliasing
 
 ifneq ($(RAYLIB_CONFIG_FLAGS), NONE)
     CFLAGS += -DEXTERNAL_CONFIG_FLAGS $(RAYLIB_CONFIG_FLAGS)