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Toolchain: Handle repeated invocations of CMake with -DCMAKE_C_COMPILER

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Repeated invocations of `cmake ... -DCMAKE_C_COMPILER=gcc` should not
trigger a "You have changed variables" message even though the cache
value of CMAKE_C_COMPILER changes from '/path/to/gcc' to 'gcc'.

Make repeated invocations of `cmake ... -DCMAKE_C_COMPILER=gcc;-pipe`
not trigger the warning by comparing the compiler name portion of the list to
the compiler being used.
This commit is contained in:
Fred Baksik
2020-07-15 15:03:45 -04:00
committed by Fred Baksik
parent 12ba89e142
commit ca899af3e2
2 changed files with 9 additions and 1 deletions
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8
Source/cmGlobalGenerator.cxx
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@@ -235,6 +235,14 @@ void cmGlobalGenerator::ResolveLanguageCompiler(const std::string& lang,
}
cmProp cname =
this->GetCMakeInstance()->GetState()->GetInitializedCacheValue(langComp);
// Split compiler from arguments
std::vector<std::string> cnameArgVec;
if (cname && !cname->empty()) {
cmExpandList(*cname, cnameArgVec);
cname = &cnameArgVec.front();
}
std::string changeVars;
if (cname && !optional) {
std::string cnameString;

2
Source/cmRulePlaceholderExpander.cxx
View File

@@ -261,7 +261,7 @@ std::string cmRulePlaceholderExpander::ExpandRuleVariable(
this->VariableMappings["CMAKE_" + compIt->second +
"_COMPILE_OPTIONS_SYSROOT"];
// if there is a required first argument to the compiler add it
// if there are required arguments to the compiler add it
// to the compiler string
if (!compilerArg1.empty()) {
ret += " ";