diff options
| author | Marc Chevrier <marc.chevrier@gmail.com> | 2023-09-27 13:22:55 (GMT) |
|---|---|---|
| committer | Marc Chevrier <marc.chevrier@gmail.com> | 2023-10-13 09:52:35 (GMT) |
| commit | 96a953b1ed7e41260aa0869bad0ff14c788cf57e (patch) | |
| tree | d9bedd8494b073f3795e4ed80f01b22a2b5a9093 /Source/cmCoreTryCompile.cxx | |
| parent | ee5f31ba727e392e1ebc9f5be54c74ac1868d029 (diff) | |
| download | CMake-96a953b1ed7e41260aa0869bad0ff14c788cf57e.zip CMake-96a953b1ed7e41260aa0869bad0ff14c788cf57e.tar.gz CMake-96a953b1ed7e41260aa0869bad0ff14c788cf57e.tar.bz2 | |
Add options to specify linker tool
Offer the capability, through variable `CMAKE_LINKER_TYPE`, as well as
the target property `LINKER_TYPE` to specify which linker must be used.
The implementation of this capability is specified by variables specific
to the language and linker type: `CMAKE_<LANG>_USING_LINKER_<TYPE>`.
Some definitions are provided as part of `CMake`.
For example, to select the `LLVM` linker rather than the standard one,
the type `LLD` should be specified through the variable `CMAKE_LINKER_TYPE`.
And, on `Apple`, `Linux` and some environments on `Windows`, the variable
`CMAKE_<LANG>_USING_LINKER_LLD` has value `-fuse-ld=lld`. And for `Windows`
environments based on `MSVC`, where the linker is used directly, the tool
`lld-link.exe` will be used rather than `link.exe`.
Fixes: #19174, #24254, #24990
Diffstat (limited to 'Source/cmCoreTryCompile.cxx')
| -rw-r--r-- | Source/cmCoreTryCompile.cxx | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx index 7e19812..69d5ffc 100644 --- a/Source/cmCoreTryCompile.cxx +++ b/Source/cmCoreTryCompile.cxx @@ -14,6 +14,7 @@ #include "cmsys/Directory.hxx" #include "cmsys/FStream.hxx" +#include "cmsys/RegularExpression.hxx" #include "cmArgumentParser.h" #include "cmConfigureLog.h" @@ -83,6 +84,7 @@ std::string const kCMAKE_HIP_PLATFORM = "CMAKE_HIP_PLATFORM"; std::string const kCMAKE_HIP_RUNTIME_LIBRARY = "CMAKE_HIP_RUNTIME_LIBRARY"; std::string const kCMAKE_ISPC_INSTRUCTION_SETS = "CMAKE_ISPC_INSTRUCTION_SETS"; std::string const kCMAKE_ISPC_HEADER_SUFFIX = "CMAKE_ISPC_HEADER_SUFFIX"; +std::string const kCMAKE_LINKER_TYPE = "CMAKE_LINKER_TYPE"; std::string const kCMAKE_LINK_SEARCH_END_STATIC = "CMAKE_LINK_SEARCH_END_STATIC"; std::string const kCMAKE_LINK_SEARCH_START_STATIC = @@ -1114,6 +1116,20 @@ cm::optional<cmTryCompileResult> cmCoreTryCompile::TryCompileCode( vars.insert(varList.begin(), varList.end()); } + if (this->Makefile->GetDefinition(kCMAKE_LINKER_TYPE)) { + // propagate various variables to support linker selection + vars.insert(kCMAKE_LINKER_TYPE); + auto defs = this->Makefile->GetDefinitions(); + cmsys::RegularExpression linkerTypeDef{ + "^CMAKE_[A-Za-z]+_USING_LINKER_" + }; + for (auto const& def : defs) { + if (linkerTypeDef.find(def)) { + vars.insert(def); + } + } + } + if (this->Makefile->GetPolicyStatus(cmPolicies::CMP0083) == cmPolicies::NEW) { // To ensure full support of PIE, propagate cache variables |