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cmake: only add -Wl,--undefined=WinMain when building an executable

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Anonymous Maarten 2022-09-19 02:38:36 +02:00 committed by Ozkan Sezer
parent c833294817
commit 3b20e0ecef
3 changed files with 59 additions and 2 deletions
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4
CMakeLists.txt
View file

@ -3049,9 +3049,9 @@ if(NOT WINDOWS_STORE AND NOT SDL2_DISABLE_SDL2MAIN)
if(MINGW OR CYGWIN)
cmake_minimum_required(VERSION 3.13)
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
target_link_options(SDL2main PUBLIC "-Wl,--undefined=_WinMain@16")
target_link_options(SDL2main PUBLIC "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:-Wl,--undefined=_WinMain@16>")
else()
target_link_options(SDL2main PUBLIC "-Wl,--undefined=WinMain")
target_link_options(SDL2main PUBLIC "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:-Wl,--undefined=WinMain>")
endif()
endif()
if (NOT ANDROID)

24
cmake/test/CMakeLists.txt
View file

@ -3,6 +3,8 @@
cmake_minimum_required(VERSION 3.12)
project(sdl_test LANGUAGES C)
include(GenerateExportHeader)
if(ANDROID)
macro(add_executable NAME)
set(args ${ARGN})
@ -41,6 +43,12 @@ if(TEST_SHARED)
)
endif()
add_library(sharedlib-shared SHARED main_lib.c)
target_link_libraries(sharedlib-shared PRIVATE SDL2::SDL2)
generate_export_header(sharedlib-shared EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
target_compile_definitions(sharedlib-shared PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-shared_export.h\"")
set_target_properties(sharedlib-shared PROPERTIES C_VISIBILITY_PRESET "hidden")
add_executable(gui-shared-vars WIN32 main_gui.c)
target_link_libraries(gui-shared-vars PRIVATE ${SDL2_LIBRARIES})
target_include_directories(gui-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
@ -60,6 +68,13 @@ if(TEST_SHARED)
target_link_libraries(cli-shared-vars PRIVATE ${SDL2_LIBRARIES})
target_include_directories(cli-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
endif()
add_library(sharedlib-shared-vars SHARED main_lib.c)
target_link_libraries(sharedlib-shared-vars PRIVATE ${SDL2_LIBRARIES})
target_include_directories(sharedlib-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
generate_export_header(sharedlib-shared-vars EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
target_compile_definitions(sharedlib-shared-vars PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-shared-vars_export.h\"")
set_target_properties(sharedlib-shared-vars PROPERTIES C_VISIBILITY_PRESET "hidden")
endif()
if(TEST_STATIC)
@ -73,6 +88,15 @@ if(TEST_STATIC)
endif()
target_link_libraries(gui-static PRIVATE SDL2::SDL2-static)
option(SDL_STATIC_PIC "SDL static library has been built with PIC")
if(SDL_STATIC_PIC OR WIN32)
add_library(sharedlib-static SHARED main_lib.c)
target_link_libraries(sharedlib-static PRIVATE SDL2::SDL2-static)
generate_export_header(sharedlib-static EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
target_compile_definitions(sharedlib-static PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-static_export.h\"")
set_target_properties(sharedlib-static PROPERTIES C_VISIBILITY_PRESET "hidden")
endif()
add_executable(gui-static-vars WIN32 main_gui.c)
target_link_libraries(gui-static-vars PRIVATE ${SDL2MAIN_LIBRARY} ${SDL2_STATIC_LIBRARIES})
target_include_directories(gui-static-vars PRIVATE ${SDL2_INCLUDE_DIRS})

33
cmake/test/main_lib.c Normal file
View file

@ -0,0 +1,33 @@
#include "SDL.h"
#include <stdio.h>
#include EXPORT_HEADER
#if defined(_WIN32)
#include <windows.h>
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
return TRUE;
}
#endif
int MYLIBRARY_EXPORT mylibrary_init(void);
void MYLIBRARY_EXPORT mylibrary_quit(void);
int MYLIBRARY_EXPORT mylibrary_work(void);
int mylibrary_init(void) {
SDL_SetMainReady();
if (SDL_Init(0) < 0) {
fprintf(stderr, "could not initialize sdl2: %s\n", SDL_GetError());
return 1;
}
return 0;
}
void mylibrary_quit(void) {
SDL_Quit();
}
int mylibrary_work(void) {
SDL_Delay(100);
return 0;
}