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CMake/Modules/Compiler
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Raul Tambre 4a0485be7f cmStandardLevelResolver: Avoid unnecessary flags, fix unset level logic 
The changes are part of CMP0128.

When the standard level is unset:
* Flags are added if extension mode doesn't match the compiler's default.
  Previously logic only worked if LANG_EXTENSIONS was ON. Fixes #22224.
* The full flag is used. Previously CMAKE_LANG_EXTENSION_COMPILE_OPTION was
  used. This was only supported for IAR.

Otherwise:
* Avoid adding flags if not necessary per the detected compiler defaults.
* Fixed check for when the requested standard is older. It now matches the
  nearby comments.

I reworded the fallback comment as its logic was a bit difficult to wrap my
head around.
2021-09-29 22:28:40 +03:00
..
XL-Fortran
XL: Add support for Ninja and XL Fortran
2019-11-21 15:59:12 -05:00
Absoft-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
ADSP-DetermineCompiler.cmake
…
AppleClang-ASM.cmake
…
AppleClang-C-FeatureTests.cmake
…
AppleClang-C.cmake
AppleClang: Add flags for C17 and C23
2021-06-16 15:50:55 -04:00
AppleClang-CXX-FeatureTests.cmake
…
AppleClang-CXX.cmake
Compile with explicit language flag when source LANGUAGE property is set
2020-12-02 11:39:11 -05:00
AppleClang-DetermineCompiler.cmake
…
AppleClang-OBJC.cmake
ObjectiveC: Add C17 and C23 support
2021-06-11 14:47:23 +02:00
AppleClang-OBJCXX.cmake
Makefiles Generators: use compiler for dependencies generation
2020-11-29 15:25:42 +01:00
ARMCC-ASM.cmake
ARMClang: Add support for Clang-based ARM compiler
2019-05-14 14:59:55 -04:00
ARMCC-C.cmake
…
ARMCC-CXX.cmake
…
ARMCC-DetermineCompiler.cmake
ARMCC: Do not identify ARMClang as ARMCC
2019-04-03 12:50:10 -04:00
ARMCC.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
ARMClang-ASM.cmake
ARMClang: Pass defines to assembler
2020-09-01 18:03:49 +01:00
ARMClang-C-FeatureTests.cmake
ARMClang: Add support for Clang-based ARM compiler
2019-05-14 14:59:55 -04:00
ARMClang-C.cmake
armclang: activate compiler dependencies generation
2021-08-06 14:01:02 +02:00
ARMClang-CXX-FeatureTests.cmake
ARMClang: Add support for Clang-based ARM compiler
2019-05-14 14:59:55 -04:00
ARMClang-CXX.cmake
armclang: activate compiler dependencies generation
2021-08-06 14:01:02 +02:00
ARMClang-DetermineCompiler.cmake
ARMClang: Add support for Clang-based ARM compiler
2019-05-14 14:59:55 -04:00
ARMClang.cmake
ARMClang: Fix regression in check for working compiler
2021-07-14 09:45:09 -04:00
Borland-DetermineCompiler.cmake
…
Bruce-C-DetermineCompiler.cmake
…
Bruce-C.cmake
LINK_OPTIONS: Add support of "LINKER:" prefix
2018-06-06 17:22:41 +02:00
CCur-Fortran.cmake
…
Clang-ASM.cmake
…
Clang-C-FeatureTests.cmake
…
Clang-C.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
Clang-CUDA.cmake
Clang/CUDA: Restore needed references to implicit link variables
2021-02-24 09:58:06 -05:00
Clang-CXX-FeatureTests.cmake
…
Clang-CXX-TestableFeatures.cmake
…
Clang-CXX.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
Clang-DetermineCompiler.cmake
…
Clang-DetermineCompilerInternal.cmake
…
Clang-FindBinUtils.cmake
BinUtils: Avoid searching CMAKE_PREFIX_PATH
2021-08-09 09:59:29 -04:00
Clang-HIP.cmake
HIP: Simplify detection of HIP runtime CMake package
2021-09-16 15:33:53 -04:00
Clang-OBJC.cmake
ObjectiveC: Add C17 and C23 support
2021-06-11 14:47:23 +02:00
Clang-OBJCXX.cmake
Makefiles Generators: use compiler for dependencies generation
2020-11-29 15:25:42 +01:00
Clang.cmake
FujitsuClang: Change LTO option from -flto=thin to -flto
2021-06-29 09:31:53 -04:00
CMakeCommonCompilerMacros.cmake
CompilerID: Compiler extensions default detection
2021-09-28 21:24:53 +03:00
Comeau-CXX-DetermineCompiler.cmake
…
Compaq-C-DetermineCompiler.cmake
…
Compaq-CXX-DetermineCompiler.cmake
…
Cray-C.cmake
Record when C compilers have gained full support for 90,99,11
2019-03-27 15:45:11 -04:00
Cray-CXX.cmake
CompileFeatures: Now able to presume full language level support
2019-04-09 08:44:56 -04:00
Cray-DetermineCompiler.cmake
…
Cray-Fortran.cmake
Cray: Enable explicit Fortran preprocessing for Ninja generator
2021-03-05 08:11:05 -05:00
Cray.cmake
…
CrayPrgEnv-C.cmake
CrayPrgEnv/ParseImplicitIncludes: simplify for new implict include parser
2019-01-29 08:17:44 -07:00
CrayPrgEnv-CXX.cmake
CrayPrgEnv/ParseImplicitIncludes: simplify for new implict include parser
2019-01-29 08:17:44 -07:00
CrayPrgEnv-Fortran.cmake
CrayPrgEnv/ParseImplicitIncludes: simplify for new implict include parser
2019-01-29 08:17:44 -07:00
CrayPrgEnv.cmake
CrayPrgEnv: Change default linking mode based on PE version
2019-08-22 12:26:06 -04:00
Embarcadero-DetermineCompiler.cmake
…
Flang-FindBinUtils.cmake
…
Flang-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
Fujitsu-C.cmake
Fujitsu: Fix C90 standard flags
2021-04-14 15:19:59 -04:00
Fujitsu-CXX.cmake
Fujitsu: Add support for the Fujitsu compiler in Trad mode
2021-03-30 10:32:53 -04:00
Fujitsu-DetermineCompiler.cmake
FujitsuClang: Add support for the Fujitsu compiler in Clang mode
2021-03-31 09:14:45 -04:00
Fujitsu-Fortran.cmake
Fujitsu: Make explicit Fortran preprocessing under Ninja more robust
2021-05-06 13:11:48 -04:00
Fujitsu.cmake
Fujitsu: Add IPO support for Fortran
2021-06-24 09:02:15 -04:00
FujitsuClang-C.cmake
FujitsuClang: Add support for the Fujitsu compiler in Clang mode
2021-03-31 09:14:45 -04:00
FujitsuClang-CXX.cmake
FujitsuClang: Add support for the Fujitsu compiler in Clang mode
2021-03-31 09:14:45 -04:00
FujitsuClang-DetermineCompiler.cmake
FujitsuClang: Add support for the Fujitsu compiler in Clang mode
2021-03-31 09:14:45 -04:00
FujitsuClang-FindBinUtils.cmake
FujitsuClang: Set CMAKE_<LANG>_COMPILER_AR and CMAKE_<LANG>_COMPILER_RANLIB
2021-06-29 09:31:53 -04:00
FujitsuClang.cmake
FujitsuClang: Add support for the Fujitsu compiler in Clang mode
2021-03-31 09:14:45 -04:00
G95-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
GHS-C.cmake
GHS: Use the correct compiler flags for CMAKE_BUILD_TYPE
2019-01-16 10:41:35 -05:00
GHS-CXX.cmake
GHS: Use the correct compiler flags for CMAKE_BUILD_TYPE
2019-01-16 10:41:35 -05:00
GHS-DetermineCompiler.cmake
GHS: Add Compiler ID detection
2019-01-16 10:42:04 -05:00
GHS.cmake
GHS: Update the link line processing
2019-01-16 10:41:27 -05:00
GNU-ASM.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
GNU-C-DetermineCompiler.cmake
…
GNU-C-FeatureTests.cmake
…
GNU-C.cmake
GNU: Correct C23 flags
2021-07-21 20:25:02 +03:00
GNU-CXX-DetermineCompiler.cmake
…
GNU-CXX-FeatureTests.cmake
CompileFeatures: document why lambda_init_captures requires GCC 4.9
2019-06-17 09:20:03 -04:00
GNU-CXX.cmake
GNU: C++23 support
2021-05-10 10:19:13 -04:00
GNU-FindBinUtils.cmake
BinUtils: Avoid searching CMAKE_PREFIX_PATH
2021-08-09 09:59:29 -04:00
GNU-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
GNU-OBJC.cmake
Makefiles Generators: use compiler for dependencies generation
2020-11-29 15:25:42 +01:00
GNU-OBJCXX.cmake
Makefiles Generators: use compiler for dependencies generation
2020-11-29 15:25:42 +01:00
GNU.cmake
Merge topic 'makefiles-compiler-deps-optims'
2020-11-30 13:26:53 -05:00
HP-ASM.cmake
…
HP-C-DetermineCompiler.cmake
…
HP-C.cmake
LINK_OPTIONS: Add support of "LINKER:" prefix
2018-06-06 17:22:41 +02:00
HP-CXX-DetermineCompiler.cmake
…
HP-CXX.cmake
LINK_OPTIONS: Add support of "LINKER:" prefix
2018-06-06 17:22:41 +02:00
HP-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
IAR-ASM.cmake
IAR: ASM module code deduplication
2021-09-23 10:35:06 -04:00
IAR-C.cmake
cmStandardLevelResolver: Avoid unnecessary flags, fix unset level logic
2021-09-29 22:28:40 +03:00
IAR-CXX.cmake
cmStandardLevelResolver: Avoid unnecessary flags, fix unset level logic
2021-09-29 22:28:40 +03:00
IAR-DetermineCompiler.cmake
IAR: update language specification detection
2021-09-23 22:09:57 +02:00
IAR.cmake
IAR: update language specification detection
2021-09-23 22:09:57 +02:00
IBMCPP-C-DetermineVersionInternal.cmake
XL: Revert "Recognize compilers identified by __ibmxl__"
2019-02-25 08:24:28 -05:00
IBMCPP-CXX-DetermineVersionInternal.cmake
XL: Revert "Recognize compilers identified by __ibmxl__"
2019-02-25 08:24:28 -05:00
Intel-ASM.cmake
…
Intel-C-FeatureTests.cmake
…
Intel-C.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
Intel-CXX-FeatureTests.cmake
CompileFeatures: Relax cxx_relaxed_constexpr compiler requirements
2019-05-13 13:11:32 -04:00
Intel-CXX.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
Intel-DetermineCompiler.cmake
Intel: Update Classic compiler version detection for 2021
2021-04-28 10:20:59 -04:00
Intel-Fortran.cmake
Intel: Make explicit Fortran preprocessing under Ninja more robust
2021-02-18 07:35:12 -05:00
Intel-ISPC.cmake
Merge topic 'ispc-system-includes'
2020-12-10 06:57:04 -05:00
Intel.cmake
Merge branch 'backport-3.17-pch-no-Fortran' into pch-no-Fortran
2020-06-02 08:24:11 -04:00
IntelLLVM-ASM.cmake
IntelLLVM: Add support for Intel LLVM-based compilers
2021-01-28 09:05:35 -05:00
IntelLLVM-C.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
IntelLLVM-CXX.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
IntelLLVM-DetermineCompiler.cmake
Modules: Fix typos and spelling in comments of generated code
2021-05-07 17:00:15 +02:00
IntelLLVM-Fortran.cmake
IntelLLVM: Make explicit Fortran preprocessing under Ninja more robust
2021-02-18 07:36:32 -05:00
IntelLLVM.cmake
IntelLLVM: Remove unsupported -imsvc system include flag
2021-02-10 07:55:00 -05:00
MSVC-ASM.cmake
…
MSVC-C-FeatureTests.cmake
MSVC: Record support for c_static_assert
2020-08-20 09:45:47 -04:00
MSVC-C.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
MSVC-CXX-FeatureTests.cmake
CompileFeatures: Relax cxx_relaxed_constexpr compiler requirements
2019-05-13 13:11:32 -04:00
MSVC-CXX.cmake
IWYU: Add --driver-mode=cl when applicable
2021-09-10 09:53:31 -04:00
MSVC-DetermineCompiler.cmake
…
NAG-Fortran.cmake
NAG: Fix using Fortran modules from their output directory
2021-02-22 09:38:12 -05:00
NVHPC-C.cmake
NVHPC-C: Add support for C17
2021-08-05 16:19:23 -04:00
NVHPC-CXX.cmake
NVHPC-CXX: Add support for C++20
2021-08-05 16:19:12 -04:00
NVHPC-DetermineCompiler.cmake
NVHPC: Add support for NVIDIA HPC SDK compilers based on PGI
2021-01-27 09:53:02 -05:00
NVHPC-Fortran.cmake
NVHPC: Add support for NVIDIA HPC SDK compilers based on PGI
2021-01-27 09:53:02 -05:00
NVHPC.cmake
NVHPC: Support 21.07 change to '-MD' where it behaves like gcc
2021-07-29 10:43:54 -04:00
NVIDIA-CUDA.cmake
CUDA: Add CMAKE_CUDA_HOST_COMPILER support on Windows non-VS generators
2021-04-22 11:40:46 -04:00
NVIDIA-DetermineCompiler.cmake
CUDA: Add information for LINKER: pattern translation
2020-04-19 15:04:56 +02:00
OpenWatcom-C.cmake
OpenWatcom: Move non-Windows settings to Modules/Compiler
2020-04-28 09:36:04 -04:00
OpenWatcom-CXX.cmake
OpenWatcom: Move non-Windows settings to Modules/Compiler
2020-04-28 09:36:04 -04:00
OpenWatcom-DetermineCompiler.cmake
…
OpenWatcom.cmake
OpenWatcom: Add infrastructure to link to object files
2021-05-29 09:28:36 -04:00
PathScale-C.cmake
…
PathScale-CXX.cmake
…
PathScale-DetermineCompiler.cmake
…
PathScale-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
PathScale.cmake
…
PGI-C.cmake
Record when C compilers have gained full support for 90,99,11
2019-03-27 15:45:11 -04:00
PGI-CXX.cmake
PGI: Explicitly specify CMAKE_CXX98_STANDARD_COMPILE_OPTION
2021-02-24 13:47:03 -05:00
PGI-DetermineCompiler.cmake
…
PGI-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
PGI.cmake
PGI: Fix "LINKER:" prefix generated separator
2021-07-09 14:49:01 +02:00
QCC-ASM.cmake
Add ASM Compiler detection for QCC
2019-02-25 08:28:47 +01:00
QCC-C-FeatureTests.cmake
QNX: Compiler and feature detection fixes
2018-12-03 23:18:43 +01:00
QCC-C.cmake
QNX: Compiler and feature detection fixes
2018-12-03 23:18:43 +01:00
QCC-CXX-FeatureTests.cmake
QNX: Compiler and feature detection fixes
2018-12-03 23:18:43 +01:00
QCC-CXX.cmake
Modules: Collapse consecutive whitespace in strings
2020-03-23 21:34:17 +01:00
QCC.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
SCO-C.cmake
…
SCO-CXX.cmake
…
SCO-DetermineCompiler.cmake
…
SCO.cmake
LINK_OPTIONS: Add support of "LINKER:" prefix
2018-06-06 17:22:41 +02:00
SDCC-C-DetermineCompiler.cmake
…
SunPro-ASM.cmake
…
SunPro-C-DetermineCompiler.cmake
…
SunPro-C-FeatureTests.cmake
…
SunPro-C.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
SunPro-CXX-DetermineCompiler.cmake
…
SunPro-CXX-FeatureTests.cmake
SunPro: Record support for C++14 features by SunPro 5.{14,15}
2019-04-19 09:14:00 -04:00
SunPro-CXX.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
SunPro-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
SunPro.cmake
…
TI-ASM.cmake
Compiler/TI: Sync ASM settings to C/CXX
2020-07-14 02:23:57 +02:00
TI-C.cmake
Compiler/TI: Fix C standard flags in C-only project
2020-12-01 12:14:38 -05:00
TI-CXX.cmake
Compiler/TI: Add std options for C++14
2020-09-21 00:57:20 +02:00
TI-DetermineCompiler.cmake
…
TI.cmake
Compiler/TI: Restore response file usage for linker
2021-05-25 10:10:42 -04:00
TinyCC-C-DetermineCompiler.cmake
…
TinyCC-C.cmake
LINK_OPTIONS: Add support of "LINKER:" prefix
2018-06-06 17:22:41 +02:00
VisualAge-C-DetermineCompiler.cmake
…
VisualAge-C.cmake
…
VisualAge-CXX-DetermineCompiler.cmake
…
VisualAge-CXX.cmake
…
VisualAge-Fortran.cmake
…
Watcom-DetermineCompiler.cmake
…
XL-ASM.cmake
…
XL-C-DetermineCompiler.cmake
XL: Revert "Recognize compilers identified by __ibmxl__"
2019-02-25 08:24:28 -05:00
XL-C.cmake
Revert "specify language flag when source LANGUAGE property is set"
2020-11-19 17:06:03 -05:00
XL-CXX-DetermineCompiler.cmake
XL: Revert "Recognize compilers identified by __ibmxl__"
2019-02-25 08:24:28 -05:00
XL-CXX.cmake
Revert "specify language flag when source LANGUAGE property is set"
2020-11-19 17:06:03 -05:00
XL-Fortran.cmake
Fortran: Add Fortran_PREPROCESS property
2020-05-21 11:44:14 -04:00
XL.cmake
Refactoring: Introduce place-holder for dependency target.
2020-11-28 16:02:58 +01:00
XLClang-C-DetermineCompiler.cmake
XLClang: Add a new compiler ID for the clang-based XL compiler
2019-02-25 08:24:28 -05:00
XLClang-C.cmake
Compile with explicit language flag when source LANGUAGE property is set
2020-12-02 11:39:11 -05:00
XLClang-CXX-DetermineCompiler.cmake
XLClang: Add a new compiler ID for the clang-based XL compiler
2019-02-25 08:24:28 -05:00
XLClang-CXX.cmake
Compile with explicit language flag when source LANGUAGE property is set
2020-12-02 11:39:11 -05:00
XLClang.cmake
XLClang: Add a new compiler ID for the clang-based XL compiler
2019-02-25 08:24:28 -05:00
zOS-C-DetermineCompiler.cmake
…
zOS-CXX-DetermineCompiler.cmake
…