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39 lines
1 KiB
CMake
39 lines
1 KiB
CMake
set(TMP_ROOT ${CMAKE_BINARY_DIR}/try-compile)
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file(MAKE_DIRECTORY ${TMP_ROOT})
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file(WRITE ${TMP_ROOT}/checkluacustomallocator.c
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"
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#include <stdlib.h>
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#include <lua.h>
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void* custom_alloc(void* ud, void* ptr, size_t osize, size_t nsize) {
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if (nsize == 0) {
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free(ptr);
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return NULL;
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} else {
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return realloc(ptr, nsize);
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}
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}
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int main(void) {
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return lua_newstate(custom_alloc, NULL) ? 0 : 1;
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}
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")
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message(STATUS "Checking if Lua allows to provide a custom allocator")
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try_run(RUN_RESULT_VAR COMPILE_RESULT_VAR
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${TMP_ROOT}/temp
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${TMP_ROOT}/checkluacustomallocator.c
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CMAKE_FLAGS "-DINCLUDE_DIRECTORIES=${LUA_INCLUDE_DIR}"
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LINK_LIBRARIES "${LUA_LIBRARIES}"
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)
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if (NOT ${COMPILE_RESULT_VAR})
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message(WARNING "Incorrect Lua library: can't compile checkluacustomallocator.c" )
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elseif(NOT ${RUN_RESULT_VAR} EQUAL 0)
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message(WARNING "Incorrect Lua library: custom allocator not supported (likely LuaJit compiled with LJ_64 but without LJ_GC64)" )
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else()
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message(STATUS "Lua supports custom allocator")
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endif()
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