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

1 files changed, 10 insertions, 0 deletions

diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index ce94fe1..84f808d 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -2987,6 +2987,16 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions(
       e1.WritePlatformConfigTag(
         "IntDir", cond, R"($(Platform)\$(Configuration)\$(ProjectName)\)");
     } else {
+      if (ttype == cmStateEnums::SHARED_LIBRARY ||
+          ttype == cmStateEnums::MODULE_LIBRARY ||
+          ttype == cmStateEnums::EXECUTABLE) {
+        auto linker = this->GeneratorTarget->GetLinkerTool(config);
+        if (!linker.empty()) {
+          ConvertToWindowsSlash(linker);
+          e1.WritePlatformConfigTag("LinkToolExe", cond, linker);
+        }
+      }
+
       std::string intermediateDir = cmStrCat(
         this->LocalGenerator->GetTargetDirectory(this->GeneratorTarget), '/',
         config, '/');