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cmake: mark the cmake script as compatible with CMake 4.4

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CMake improved passing strings through macro borders: CMP0219
Make sure we disable the extra for newer CMake.
This commit is contained in:
Anonymous Maarten
2026-07-31 22:15:07 +02:00
committed by Anonymous Maarten
parent 691571cc57
commit 2d81bcb605
1 changed files with 27 additions and 12 deletions
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39
CMakeLists.txt
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@@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.16)
cmake_minimum_required(VERSION 3.16...4.4)
if(NOT DEFINED CMAKE_BUILD_TYPE)
set(cmake_build_type_undefined 1)
@@ -1848,17 +1848,32 @@ elseif(UNIX AND NOT (APPLE OR RISCOS OR HAIKU OR CYGWIN))
set(SDL_DISABLE_DLOPEN_NOTES TRUE)
if(SDL_DLOPEN_NOTES)
set(CHECK_ELF_DLNOTES_SRC [==[
#ifndef __ELF__
ELF DL notes is only supported on ELF platforms
#endif
__attribute__ ((used,aligned(4),section(".note.dlopen"))) static const struct {
struct { int a; int b; int c; } hdr; char name[4]; __attribute__((aligned(4))) char json[24];
} dlnote = { { 4, 0x407c0c0aU, 16 }, "FDO", "[\\"a\\":{\\"a\\":\\"1\\",\\"b\\":\\"2\\"}]" };
int main(int argc, char *argv[]) {
return argc + dlnote.hdr.a;
}
]==])
if(POLICY CMP0219)
set(CHECK_ELF_DLNOTES_SRC [==[
#ifndef __ELF__
ELF DL notes is only supported on ELF platforms
#endif
__attribute__ ((used,aligned(4),section(".note.dlopen"))) static const struct {
struct { int a; int b; int c; } hdr; char name[4]; __attribute__((aligned(4))) char json[24];
} dlnote = { { 4, 0x407c0c0aU, 16 }, "FDO", "[\"a\":{\"a\":\"1\",\"b\":\"2\"}]" };
int main(int argc, char *argv[]) {
return argc + dlnote.hdr.a;
}
]==])
else()
# FIXME: drop this once minimum CMake version is >= 4.4
set(CHECK_ELF_DLNOTES_SRC [==[
#ifndef __ELF__
ELF DL notes is only supported on ELF platforms
#endif
__attribute__ ((used,aligned(4),section(".note.dlopen"))) static const struct {
struct { int a; int b; int c; } hdr; char name[4]; __attribute__((aligned(4))) char json[24];
} dlnote = { { 4, 0x407c0c0aU, 16 }, "FDO", "[\\"a\\":{\\"a\\":\\"1\\",\\"b\\":\\"2\\"}]" };
int main(int argc, char *argv[]) {
return argc + dlnote.hdr.a;
}
]==])
endif()
check_c_source_compiles("${CHECK_ELF_DLNOTES_SRC}" COMPILER_SUPPORTS_ELFNOTES)
if(COMPILER_SUPPORTS_ELFNOTES)
set(SDL_DISABLE_DLOPEN_NOTES FALSE)