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cmake: check whether libunwind can be compiled and linked against

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Anonymous Maarten 2023-07-04 23:22:38 +02:00 committed by Anonymous Maarten
parent 8908d16285
commit 0262f757e1
2 changed files with 50 additions and 15 deletions
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18
CMakeLists.txt
View file

@ -1023,9 +1023,6 @@ if(SDL_LIBC)
sys/types.h
wchar.h
)
if(NOT EMSCRIPTEN)
list(APPEND headers_to_check libunwind.h)
endif()
foreach(_HEADER ${headers_to_check})
string(TOUPPER "HAVE_${_HEADER}" _UPPER)
string(REGEX REPLACE "[./]" "_" _HAVE_H ${_UPPER})
@ -1405,10 +1402,7 @@ elseif(EMSCRIPTEN)
endif()
CheckPTHREAD()
if(HAVE_LIBUNWIND_H)
list(APPEND EXTRA_TEST_LIBS unwind)
endif()
CheckLibUnwind()
elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
if(SDL_AUDIO)
@ -1572,15 +1566,8 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
endif()
endif()
if(HAVE_LIBUNWIND_H)
# We've already found the header, so link the lib if present.
# NB: This .pc file is not present on FreeBSD where the implicitly
# linked base system libgcc_s includes all libunwind ABI.
pkg_search_module(UNWIND libunwind)
pkg_search_module(UNWIND_GENERIC libunwind-generic)
list(APPEND EXTRA_TEST_LIBS ${UNWIND_LIBRARIES} ${UNWIND_GENERIC_LIBRARIES})
endif()
endif()
CheckLibUnwind()
if(HAVE_DBUS_DBUS_H)
list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/linux/SDL_dbus.c")
@ -3453,6 +3440,7 @@ if(SDL_TEST)
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/SDL2>")
target_link_libraries(SDL2_test PRIVATE ${EXTRA_TEST_LIBS})
target_include_directories(SDL2_test PRIVATE ${EXTRA_TEST_INCLUDES})
set_property(TARGET SDL2_test APPEND PROPERTY COMPATIBLE_INTERFACE_STRING "SDL_VERSION")
set_property(TARGET SDL2_test PROPERTY INTERFACE_SDL_VERSION "SDL2")
endif()

47
cmake/sdlchecks.cmake
View file

@ -1336,3 +1336,50 @@ macro(CheckLibUDev)
endif()
endif()
endmacro()
macro(CheckLibUnwind)
set(found_libunwind FALSE)
set(_libunwind_src "#include <libunwind.h>\nint main() {unw_context_t context; unw_getcontext(&context); return 0;}")
if(NOT found_libunwind)
cmake_push_check_state()
check_c_source_compiles("${_libunwind_src}" LIBC_HAS_WORKING_LIBUNWIND)
cmake_pop_check_state()
if(LIBC_HAS_WORKING_LIBUNWIND)
set(found_libunwind TRUE)
endif()
endif()
if(NOT found_libunwind)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_LIBRARIES "unwind")
check_c_source_compiles("${_libunwind_src}" LIBUNWIND_HAS_WORKINGLIBUNWIND)
cmake_pop_check_state()
if(LIBUNWIND_HAS_WORKINGLIBUNWIND)
set(found_libunwind TRUE)
list(APPEND EXTRA_TEST_LIBS unwind)
endif()
endif()
if(NOT found_libunwind)
set(LibUnwind_PKG_CONFIG_SPEC libunwind libunwind-generic)
pkg_check_modules(PC_LIBUNWIND IMPORTED_TARGET ${LibUnwind_PKG_CONFIG_SPEC})
if(PC_LIBUNWIND_FOUND)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_LIBRARIES ${PC_LIBUNWIND_LIBRARIES})
list(APPEND CMAKE_REQUIRED_INCLUDES ${PC_LIBUNWIND_INCLUDE_DIRS})
check_c_source_compiles("${_libunwind_src}" PC_LIBUNWIND_HAS_WORKING_LIBUNWIND)
cmake_pop_check_state()
if(PC_LIBUNWIND_HAS_WORKING_LIBUNWIND)
set(found_libunwind TRUE)
list(APPEND EXTRA_TEST_LIBS ${PC_LIBUNWIND_LIBRARIES})
list(APPEND EXTRA_TEST_INCLUDES ${PC_LIBUNWIND_INCLUDE_DIRS})
endif()
endif()
endif()
if(found_libunwind)
set(HAVE_LIBUNWIND_H TRUE)
endif()
endmacro()