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cmake: test -Wl,--version-script with minimal version script 

Android ndk 26 errors when a symbol in the version script is not defined.
This commit is contained in:
Anonymous Maarten 2023-09-20 04:24:08 +02:00 committed by Anonymous Maarten
parent 0efa196989
commit 3a36433a3c
2 changed files with 12 additions and 3 deletions
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2
CMakeLists.txt
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@ -423,7 +423,7 @@ if(WINDOWS_STORE)
sdl_compile_options(PRIVATE "-ZW")
endif()
check_linker_flag(C "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/dynapi/SDL_dynapi.sym" HAVE_WL_VERSION_SCRIPT)
check_linker_supports_version_file(HAVE_WL_VERSION_SCRIPT)
if(HAVE_WL_VERSION_SCRIPT)
sdl_shared_link_options("-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/dynapi/SDL_dynapi.sym")
else()

13
cmake/macros.cmake
View File

@ -82,16 +82,25 @@ if(APPLE)
enable_language(OBJC)
endif()
function(check_linker_supports_version_file VAR)
cmake_push_check_state()
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.sym" "n_0 {\n global:\n func;\n local: *;\n};\n")
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS "-Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/dummy.sym")
check_c_source_compiles("int func(void) {return 0;} int main(int argc,char*argv[]){(void)argc;(void)argv;return func();}" LINKER_SUPPORTS_VERSION_SCRIPT FAIL_REGEX "(unsupported|syntax error)")
cmake_pop_check_state()
set(${VAR} "${LINKER_SUPPORTS_VERSION_SCRIPT}" PARENT_SCOPE)
endfunction()
if(CMAKE_VERSION VERSION_LESS 3.18)
function(check_linker_flag LANG FLAG VAR)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS ${FLAG} )
if(LANG STREQUAL "C")
include(CheckCSourceCompiles)
check_c_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "warning")
check_c_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "(unsupported|syntax error)")
elseif(LANG STREQUAL "CXX")
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "warning")
check_cxx_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "(unsupported|syntax error)")
else()
message(FATAL_ERROR "Unsupported language: ${LANG}")
endif()