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COMPILER_LAUNCHER: Add support for generator expressions

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Fixes: #23441
This commit is contained in:
Thomas Weißschuh
2022-08-26 09:15:48 +02:00
committed by Brad King
parent 60a1ccbd6a
commit 36400e9dc1
5 changed files with 20 additions and 5 deletions
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5
Help/prop_tgt/LANG_COMPILER_LAUNCHER.rst
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@@ -14,3 +14,8 @@ its arguments to the tool. Some example tools are distcc and ccache.
This property is initialized by the value of
the :variable:`CMAKE_<LANG>_COMPILER_LAUNCHER` variable if it is set
when a target is created.
.. versionadded:: 3.25
The property value may use
:manual:`generator expressions <cmake-generator-expressions(7)>`.

5
Help/release/dev/compiler-launcher-genexp.rst Normal file
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@@ -0,0 +1,5 @@
compiler-launcher-genexp
------------------------
* The :prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property now supports
:manual:`generator expressions <cmake-generator-expressions(7)>`.

6
Source/cmMakefileTargetGenerator.cxx
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@@ -1042,8 +1042,10 @@ void cmMakefileTargetGenerator::WriteObjectRuleFiles(
lang == "OBJCXX")) {
std::string const clauncher_prop = lang + "_COMPILER_LAUNCHER";
cmValue clauncher = this->GeneratorTarget->GetProperty(clauncher_prop);
if (cmNonempty(clauncher)) {
compilerLauncher = *clauncher;
std::string evaluatedClauncher = cmGeneratorExpression::Evaluate(
*clauncher, this->LocalGenerator, config);
if (!evaluatedClauncher.empty()) {
compilerLauncher = evaluatedClauncher;
}
}

6
Source/cmNinjaTargetGenerator.cxx
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@@ -912,8 +912,10 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang,
lang == "OBJCXX")) {
std::string const clauncher_prop = cmStrCat(lang, "_COMPILER_LAUNCHER");
cmValue clauncher = this->GeneratorTarget->GetProperty(clauncher_prop);
if (cmNonempty(clauncher)) {
compilerLauncher = *clauncher;
std::string evaluatedClauncher = cmGeneratorExpression::Evaluate(
*clauncher, this->LocalGenerator, config);
if (!evaluatedClauncher.empty()) {
compilerLauncher = evaluatedClauncher;
}
}

3
Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
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@@ -17,7 +17,8 @@ endfunction()
function(run_compiler_launcher_env lang)
string(REGEX REPLACE "-.*" "" core_lang "${lang}")
set(ENV{CMAKE_${core_lang}_COMPILER_LAUNCHER} "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
# Use the noop genexp $<PATH:...> genexp to validate genexp support.
set(ENV{CMAKE_${core_lang}_COMPILER_LAUNCHER} "$<PATH:CMAKE_PATH,${CMAKE_COMMAND}>;-E;env;USED_LAUNCHER=1")
run_compiler_launcher(${lang})
unset(ENV{CMAKE_${core_lang}_COMPILER_LAUNCHER})
endfunction()