CMake: use TARGET_PLATFORM=<platform> instead of <platform>_BUILD=ON

bvschaik · May 23, 2021 · 04c0271 · 04c0271
1 parent bdd5bea
commit 04c0271
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Showing 5 changed files with 31 additions and 39 deletions.
diff --git a/.ci_scripts/run_cmake.sh b/.ci_scripts/run_cmake.sh
@@ -2,10 +2,10 @@
 
 case "$BUILD_TARGET" in
 "vita")
-	docker exec vitasdk /bin/bash -c "mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DVITA_BUILD=ON .."
+	docker exec vitasdk /bin/bash -c "mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DTARGET_PLATFORM=vita .."
 	;;
 "switch")
-	docker exec switchdev /bin/bash -c "mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DSWITCH_BUILD=ON .."
+	docker exec switchdev /bin/bash -c "mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DTARGET_PLATFORM=switch .."
 	;;
 "mac")
 	mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DSYSTEM_LIBS=OFF ..
@@ -25,7 +25,7 @@ case "$BUILD_TARGET" in
 	;;
 "emscripten")
 	export EMSDK=${PWD}/emsdk
-	mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DSYSTEM_LIBS=OFF -DEMSCRIPTEN_BUILD=ON ..
+	mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DSYSTEM_LIBS=OFF -DTARGET_PLATFORM=emscripten ..
 	;;
 *)
 	mkdir build && cd build && cmake ..

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,33 +1,25 @@
 cmake_minimum_required(VERSION 3.1)
 include(CMakeDependentOption)
 
-if(VITA_BUILD AND SWITCH_BUILD)
-    message(FATAL_ERROR "Cannot build with -DVITA_BUILD=ON and -DSWITCH_BUILD=ON at the same time")
-endif()
+set(TARGET_PLATFORM "default" CACHE STRING "Platform to cross-compile for. Options: vita switch android emscripten. Leave blank for no cross compilation")
+set_property(CACHE TARGET_PLATFORM PROPERTY STRINGS default vita switch android emscripten)
 
-if((VITA_BUILD OR SWITCH_BUILD) AND ANDROID_BUILD)
-    message(FATAL_ERROR "Cannot build with -DVITA_BUILD=ON or -DSWITCH_BUILD=ON and -DANDROID_BUILD=ON at the same time")
-endif()
+string(TOLOWER ${TARGET_PLATFORM} TARGET_PLATFORM)
 
 option(DRAW_FPS "Draw FPS on the top left corner of the window." OFF)
 option(SYSTEM_LIBS "Use system libraries when available." ON)
 option(EMSCRIPTEN_LOAD_SDL_PORTS "Load SDL and SDL_mixer emscripten ports instead of compiling them" OFF)
 option(LINK_MPG123 "Link mpg123 statically to Julius instead of relying on a library." OFF)
 
-cmake_dependent_option(VITA_BUILD "Build for the PlayStation Vita handheld game console." OFF "NOT MSVC" OFF)
-cmake_dependent_option(SWITCH_BUILD "Build for the Nintendo Switch handheld game console." OFF "NOT MSVC; NOT VITA_BUILD" OFF)
-cmake_dependent_option(ANDROID_BUILD "Build for the Android environment." OFF "NOT MSVC; NOT VITA_BUILD; NOT SWITCH_BUILD" OFF)
-cmake_dependent_option(EMESCRIPTEN_BUILD "Build for the Emscripten environment." OFF "NOT VITA_BUILD; NOT SWITCH_BUILD; NOT ANDROID_BUILD" OFF)
-
-if(VITA_BUILD AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+if(${TARGET_PLATFORM} STREQUAL "vita" AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
     if(DEFINED ENV{VITASDK})
         set(CMAKE_TOOLCHAIN_FILE "$ENV{VITASDK}/share/vita.toolchain.cmake" CACHE PATH "toolchain file")
     else()
         message(FATAL_ERROR "Please define VITASDK to point to your SDK path!")
     endif()
 endif()
 
-if(SWITCH_BUILD AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+if(${TARGET_PLATFORM} STREQUAL "switch" AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
     if(DEFINED ENV{DEVKITPRO})
         set(DEVKITPRO $ENV{DEVKITPRO})
         set(CMAKE_TOOLCHAIN_FILE "./cmake/switch.cmake" CACHE PATH "toolchain file")
@@ -36,7 +28,7 @@ if(SWITCH_BUILD AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
     endif()
 endif()
 
-if(EMSCRIPTEN_BUILD AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+if(${TARGET_PLATFORM} STREQUAL "emscripten" AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
     if(DEFINED ENV{EMSDK})
         set(EMSDK $ENV{EMSDK})
         set(CMAKE_TOOLCHAIN_FILE "$ENV{EMSDK}/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake" CACHE PATH "toolchain file")
@@ -49,7 +41,7 @@ set(SHORT_NAME julius)
 set(USER_FRIENDLY_NAME Julius)
 project(${SHORT_NAME} C)
 
-if (VITA_BUILD)
+if (${TARGET_PLATFORM} STREQUAL "vita")
     include("${VITASDK}/share/vita.cmake" REQUIRED)
     set(VITA_TITLEID  "JULIUS001")
 endif()
@@ -123,7 +115,7 @@ else()
     set(VERSION_REVISION " unknown development version")
 endif()
 
-if(VITA_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "vita")
     string(LENGTH "${PROJECT_VERSION_MAJOR}" NUM_DIGITS)
     if(NUM_DIGITS EQUAL 1)
         set(VITA_VERSION_MAJOR "0${PROJECT_VERSION_MAJOR}")
@@ -145,15 +137,15 @@ if(VITA_BUILD)
     set(VITA_VERSION "${VITA_VERSION_MAJOR}.${VITA_VERSION_MINOR}")
 endif()
 
-if (SWITCH_BUILD)
+if (${TARGET_PLATFORM} STREQUAL "switch")
     string(SUBSTRING "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${VERSION_REVISION}" 0 15 SWITCH_VERSION)
 endif()
 
 configure_file(${PROJECT_SOURCE_DIR}/gen/version.c.in ${PROJECT_SOURCE_DIR}/src/platform/version.c)
 configure_file(${PROJECT_SOURCE_DIR}/gen/version.rc.in ${PROJECT_SOURCE_DIR}/res/version.rc)
 configure_file(${PROJECT_SOURCE_DIR}/gen/version.txt.in ${PROJECT_SOURCE_DIR}/res/version.txt)
 
-if(EMSCRIPTEN_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "emscripten")
     configure_file(${PROJECT_SOURCE_DIR}/gen/shell.html.in ${PROJECT_SOURCE_DIR}/res/shell.html)
 endif()
 
@@ -202,18 +194,18 @@ set(PLATFORM_FILES
     ${PROJECT_SOURCE_DIR}/src/platform/virtual_keyboard.c
 )
 
-if (VITA_BUILD)
+if (${TARGET_PLATFORM} STREQUAL "vita")
     set(PLATFORM_FILES
         ${PLATFORM_FILES}
         ${PROJECT_SOURCE_DIR}/src/platform/vita/vita.c
         ${PROJECT_SOURCE_DIR}/src/platform/vita/vita_keyboard.c
     )
-elseif (SWITCH_BUILD)
+elseif (${TARGET_PLATFORM} STREQUAL "switch")
     set(PLATFORM_FILES
         ${PLATFORM_FILES}
         ${PROJECT_SOURCE_DIR}/src/platform/switch/switch.c
     )
-elseif (ANDROID_BUILD)
+elseif (${TARGET_PLATFORM} STREQUAL "android")
     set(PLATFORM_FILES
         ${PLATFORM_FILES}
         ${PROJECT_SOURCE_DIR}/src/platform/android/android.c
@@ -594,7 +586,7 @@ if(APPLE)
 endif()
 
 set(EMSCRIPTEN_FILES "")
-if(EMSCRIPTEN_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "emscripten")
     set(EMSCRIPTEN_FILES ${PROJECT_SOURCE_DIR}/res/shell.html)
 endif()
 
@@ -622,7 +614,7 @@ set(SOURCE_FILES
     ${EMSCRIPTEN_FILES}
 )
 
-if(EMSCRIPTEN_BUILD AND EMSCRIPTEN_LOAD_SDL_PORTS)
+if(${TARGET_PLATFORM} STREQUAL "emscripten" AND EMSCRIPTEN_LOAD_SDL_PORTS)
     set(USE_FLAGS "-s USE_SDL=2 -s USE_SDL_MIXER=2")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${USE_FLAGS}")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${USE_FLAGS}")
@@ -650,7 +642,7 @@ else()
 
     find_package(SDL2 REQUIRED)
     find_package(SDL2_mixer REQUIRED)
-    if(EMSCRIPTEN_BUILD)
+    if(${TARGET_PLATFORM} STREQUAL "emscripten")
         set(LINK_MPG123 true)
     endif()
 endif()
@@ -659,13 +651,13 @@ if(LINK_MPG123)
     find_package(MPG123 REQUIRED)
 endif()
 
-if(ANDROID_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "android")
     add_library(${SHORT_NAME} SHARED ${SDL2_ANDROID_HOOK} ${SOURCE_FILES})
 else()
     add_executable(${SHORT_NAME} WIN32 ${SOURCE_FILES})
 endif()
 
-if(EMSCRIPTEN_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "emscripten")
     set(CMAKE_EXECUTABLE_SUFFIX .html)
     set_target_properties(${SHORT_NAME} PROPERTIES LINK_FLAGS "-lidbfs.js -s SINGLE_FILE=1 -s DEMANGLE_SUPPORT=1 -s DYNCALLS=1 --shell-file ${PROJECT_SOURCE_DIR}/res/shell.html -s INITIAL_MEMORY=268435456 -s ALLOW_MEMORY_GROWTH=1 -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=0 -s SAFE_HEAP=1 -s INVOKE_RUN=0 -s 'EXPORTED_FUNCTIONS=[\"_main\"]' -s 'EXPORTED_RUNTIME_METHODS=[\"callMain\",\"FS\"]'  --bind")
 endif()
@@ -753,12 +745,12 @@ else()
     target_sources(${SHORT_NAME} PRIVATE "${PNG_FILES}" "${ZLIB_FILES}")
 endif()
 
-if(VITA_BUILD)
+if(${TARGET_PLATFORM} STREQUAL "vita")
     include_directories(
         $ENV{VITASDK}/arm-vita-eabi/include
         ${CMAKE_CURRENT_SOURCE_DIR}
     )
-elseif (SWITCH_BUILD)
+elseif (${TARGET_PLATFORM} STREQUAL "switch")
     include_directories(
         ${DEVKITPRO}/portlibs/switch/include/SDL2
         ${DEVKITPRO}/libnx/include
@@ -773,7 +765,7 @@ if(MSVC)
     include_directories(ext/dirent)
 endif()
 
-if (VITA_BUILD)
+if (${TARGET_PLATFORM} STREQUAL "vita")
     target_link_libraries (${SHORT_NAME}
         ${SDL2_MIXER_LIBRARY}
         ${SDL2_LIBRARY}
@@ -813,7 +805,7 @@ if (VITA_BUILD)
         FILE res/vita/startup.png sce_sys/livearea/contents/startup.png
         FILE res/vita/template.xml sce_sys/livearea/contents/template.xml
     )
-elseif(SWITCH_BUILD)
+elseif(${TARGET_PLATFORM} STREQUAL "switch")
     target_link_libraries (${SHORT_NAME}
         SDL2_mixer
         SDL2
@@ -856,15 +848,15 @@ else()
     if (UNIX AND NOT APPLE AND (CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang"))
         target_link_libraries(${SHORT_NAME} m)
     endif()
-    if(ANDROID_BUILD)
+    if(${TARGET_PLATFORM} STREQUAL "android")
         find_library(LOG_LIB log)
         target_link_libraries(${SHORT_NAME} ${LOG_LIB})
     endif()
     if(LINK_MPG123)
         target_link_libraries(${SHORT_NAME} ${MPG123_LIBRARY})
     endif()
     target_link_libraries(${SHORT_NAME} ${SDL2_LIBRARY} ${SDL2_MIXER_LIBRARY})
-    if(NOT APPLE AND NOT ANDROID_BUILD)
+    if(NOT APPLE AND NOT ${TARGET_PLATFORM} STREQUAL "android")
         install(TARGETS ${SHORT_NAME} RUNTIME DESTINATION bin)
     endif()
 
@@ -878,7 +870,7 @@ else()
     endif()
 
     # Unit tests
-    if(NOT VITA_BUILD AND NOT SWITCH_BUILD AND NOT ANDROID_BUILD AND NOT EMSCRIPTEN_BUILD)
+    if(${TARGET_PLATFORM} STREQUAL "default")
         enable_testing()
         add_subdirectory(test)
     endif()

diff --git a/android/julius/build.gradle b/android/julius/build.gradle
@@ -79,7 +79,7 @@ android {
 
         externalNativeBuild {
             cmake {
-                arguments "-DANDROID_BUILD=ON", "-DSYSTEM_LIBS=OFF"
+                arguments "-DTARGET_PLATFORM=android", "-DSYSTEM_LIBS=OFF"
             }
         }
         ndk {

diff --git a/cmake/FindSDL2.cmake b/cmake/FindSDL2.cmake
@@ -67,7 +67,7 @@
 
 GET_SDL_EXT_DIR(SDL_EXT_DIR "")
 
-IF(ANDROID_BUILD)
+IF(${TARGET_PLATFORM} STREQUAL "android")
     STRING(TOLOWER ${CMAKE_BUILD_TYPE} ANDROID_BUILD_DIR)
     SET(SDL2_LIBRARY SDL2)
     SET(SDL2_ANDROID_HOOK ${SDL_EXT_DIR}/src/main/android/SDL_android_main.c)

diff --git a/cmake/FindSDL2_mixer.cmake b/cmake/FindSDL2_mixer.cmake
@@ -34,7 +34,7 @@
 
 GET_SDL_EXT_DIR(SDL_MIXER_EXT_DIR "mixer")
 
-IF(ANDROID_BUILD)
+IF(${TARGET_PLATFORM} STREQUAL "android")
     STRING(TOLOWER ${CMAKE_BUILD_TYPE} ANDROID_BUILD_DIR)
     SET(SDL2_MIXER_LIBRARY SDL2_mixer)
     link_directories(${PROJECT_SOURCE_DIR}/android/SDL2/build/intermediates/ndkBuild/${ANDROID_BUILD_DIR}/obj/local/${ANDROID_ABI})