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ObjectiveC: Add C17 and C23 support

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Issue: #22297
This commit is contained in:
Gregor Jasny
2021-06-11 13:40:57 +02:00
parent 2086b938a7
commit e8dc95ae1e
6 changed files with 40 additions and 3 deletions
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4
Help/release/dev/objc-std-17-23.rst Normal file
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@@ -0,0 +1,4 @@
objc-std-17-23
--------------
* :prop_tgt:`OBJC_STANDARD` gained support for C17 and C23.

2
Modules/CMakeOBJCCompiler.cmake.in
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@@ -9,6 +9,8 @@ set(CMAKE_OBJC_COMPILE_FEATURES "@CMAKE_OBJC_COMPILE_FEATURES@")
set(CMAKE_OBJC90_COMPILE_FEATURES "@CMAKE_OBJC90_COMPILE_FEATURES@")
set(CMAKE_OBJC99_COMPILE_FEATURES "@CMAKE_OBJC99_COMPILE_FEATURES@")
set(CMAKE_OBJC11_COMPILE_FEATURES "@CMAKE_OBJC11_COMPILE_FEATURES@")
set(CMAKE_OBJC17_COMPILE_FEATURES "@CMAKE_OBJC17_COMPILE_FEATURES@")
set(CMAKE_OBJC23_COMPILE_FEATURES "@CMAKE_OBJC23_COMPILE_FEATURES@")
set(CMAKE_OBJC_PLATFORM_ID "@CMAKE_OBJC_PLATFORM_ID@")
set(CMAKE_OBJC_SIMULATE_ID "@CMAKE_OBJC_SIMULATE_ID@")

4
Modules/CMakeOBJCCompilerId.m.in
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@@ -27,6 +27,10 @@ char const* qnxnto = "INFO" ":" "qnxnto[]";
# else
# define C_DIALECT
# endif
#elif __STDC_VERSION__ > 201710L
# define C_DIALECT "23"
#elif __STDC_VERSION__ >= 201710L
# define C_DIALECT "17"
#elif __STDC_VERSION__ >= 201000L
# define C_DIALECT "11"
#elif __STDC_VERSION__ >= 199901L

16
Modules/Compiler/AppleClang-OBJC.cmake
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@@ -23,4 +23,18 @@ if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 4.0)
set(CMAKE_OBJC11_STANDARD__HAS_FULL_SUPPORT ON)
endif()
__compiler_check_default_language_standard(OBJC 4.0 99)
# AppleClang 10.0 was the oldest compiler available to test C17 support
if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 10.0)
set(CMAKE_OBJC17_STANDARD_COMPILE_OPTION "-std=c17")
set(CMAKE_OBJC17_EXTENSION_COMPILE_OPTION "-std=gnu17")
set(CMAKE_OBJC17_STANDARD__HAS_FULL_SUPPORT ON)
endif()
if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 11.0)
set(CMAKE_OBJC23_STANDARD_COMPILE_OPTION "-std=c2x")
set(CMAKE_OBJC23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
set(CMAKE_OBJC23_STANDARD__HAS_FULL_SUPPORT ON)
endif()
# AppleClang 10.0 was the oldest compiler available to test default C11 support
__compiler_check_default_language_standard(OBJC 4.0 99 10.0 11)

12
Modules/Compiler/Clang-OBJC.cmake
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@@ -24,4 +24,16 @@ if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 3.4)
set(CMAKE_OBJC11_STANDARD__HAS_FULL_SUPPORT ON)
endif()
if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 6.0)
set(CMAKE_OBJC17_STANDARD_COMPILE_OPTION "-std=c17")
set(CMAKE_OBJC17_EXTENSION_COMPILE_OPTION "-std=gnu17")
set(CMAKE_OBJC17_STANDARD__HAS_FULL_SUPPORT ON)
endif()
if(NOT CMAKE_OBJC_COMPILER_VERSION VERSION_LESS 9.0)
set(CMAKE_OBJC23_STANDARD_COMPILE_OPTION "-std=c2x")
set(CMAKE_OBJC23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
set(CMAKE_OBJC23_STANDARD__HAS_FULL_SUPPORT ON)
endif()
__compiler_check_default_language_standard(OBJC 3.4 99 3.6 11)

5
Source/cmStandardLevelResolver.cxx
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@@ -322,8 +322,9 @@ std::unordered_map<std::string, StanardLevelComputer> StandardComputerMapping =
"CUDA", std::vector<int>{ 03, 11, 14, 17, 20, 23 },
std::vector<std::string>{ "03", "11", "14", "17", "20", "23" } } },
{ "OBJC",
StanardLevelComputer{ "OBJC", std::vector<int>{ 90, 99, 11 },
std::vector<std::string>{ "90", "99", "11" } } },
StanardLevelComputer{
"OBJC", std::vector<int>{ 90, 99, 11, 17, 23 },
std::vector<std::string>{ "90", "99", "11", "17", "23" } } },
{ "OBJCXX",
StanardLevelComputer{
"OBJCXX", std::vector<int>{ 98, 11, 14, 17, 20, 23 },