Commit bb9ebad74bf0c31157bde09d4ca86dad622aa4a3
2022-01-11T09:34:14
Optionally disable generation of SDL2main and uninstall projects. Mostly meant to allow SDL2 to be incorporated as a sub-project of external CMake projects.
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diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50c1eae..1ec19a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -370,6 +370,10 @@ foreach(_SUB ${SDL_SUBSYSTEMS})
option(SDL_${_OPT} "Enable the ${_SUB} subsystem" ${SDL_${_OPT}_ENABLED_BY_DEFAULT})
endforeach()
+# Allow some projects to be built conditionally.
+set_option(SDL2_DISABLE_SDL2MAIN "Disable building/installation of SDL2main" OFF)
+set_option(SDL2_DISABLE_UNINSTALL "Disable uninstallation of SDL2" OFF)
+
option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/release/enabled/paranoid)" "auto")
#set_option(SDL_DEPENDENCY_TRACKING "Use gcc -MMD -MT dependency tracking" ON)
set_option(SDL_LIBC "Use the system C library" ${OPT_DEF_LIBC})
@@ -1786,8 +1790,11 @@ elseif(WINDOWS)
if(MINGW OR CYGWIN)
list(APPEND EXTRA_LIBS mingw32)
list(APPEND EXTRA_LDFLAGS "-mwindows")
- set(SDL_CFLAGS "${SDL_CFLAGS} -Dmain=SDL_main")
- list(APPEND SDL_LIBS "-lmingw32" "-lSDL2main" "-mwindows")
+ list(APPEND SDL_LIBS "-lmingw32" "-mwindows")
+ if(NOT SDL2_DISABLE_SDL2MAIN)
+ set(SDL_CFLAGS "${SDL_CFLAGS} -Dmain=SDL_main")
+ list(APPEND SDL_LIBS "-lSDL2main")
+ endif(NOT SDL2_DISABLE_SDL2MAIN)
endif()
elseif(APPLE)
@@ -2818,8 +2825,8 @@ endif()
# Ensure that the extra cflags are used at compile time
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
-# Always build SDLmain
-if(NOT WINDOWS_STORE)
+if(NOT WINDOWS_STORE AND NOT SDL2_DISABLE_SDL2MAIN)
+ # Build SDLmain
add_library(SDL2main STATIC ${SDLMAIN_SOURCES})
# alias target for in-tree builds
add_library(SDL2::SDL2main ALIAS SDL2main)
@@ -2929,7 +2936,7 @@ if(SDL_SHARED)
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
-if(NOT WINDOWS_STORE)
+if(NOT WINDOWS_STORE AND NOT SDL2_DISABLE_SDL2MAIN)
install(TARGETS SDL2main EXPORT SDL2mainTargets
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
@@ -2964,7 +2971,7 @@ if(SDL_SHARED)
)
endif()
-if(NOT WINDOWS_STORE)
+if(NOT WINDOWS_STORE AND NOT SDL2_DISABLE_SDL2MAIN)
install(EXPORT SDL2mainTargets
FILE SDL2mainTargets.cmake
NAMESPACE SDL2::
@@ -3030,6 +3037,7 @@ endif()
##### Uninstall target #####
+if(NOT SDL2_DISABLE_UNINSTALL)
if(NOT TARGET uninstall)
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
@@ -3039,3 +3047,4 @@ if(NOT TARGET uninstall)
add_custom_target(uninstall
COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
endif()
+endif(NOT SDL2_DISABLE_UNINSTALL)