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VS: Simplify logic adding source file C/C++ language flag to MSVC

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Do not add a target-wide language flag.  We need a flag on an individual
source file to explicitly specify the C or C++ language if and only if
the source file extension does not imply it.
This commit is contained in:
Brad King
2020-05-15 09:22:15 -04:00
parent 27ead9d4b7
commit 3b547e2e4b
1 changed files with 7 additions and 21 deletions
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28
Source/cmVisualStudio10TargetGenerator.cxx
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@@ -2318,21 +2318,13 @@ void cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
cmGeneratorExpression::Find(*cincludes) != std::string::npos;
includes += *cincludes;
}
std::string lang =
this->GlobalGenerator->GetLanguageFromExtension(sf.GetExtension().c_str());
std::string sourceLang = this->LocalGenerator->GetSourceFileLanguage(sf);
const std::string& linkLanguage =
this->GeneratorTarget->GetLinkerLanguage("");
bool needForceLang = false;
// source file does not match its extension language
if (lang != sourceLang) {
needForceLang = true;
lang = sourceLang;
}
// if the source file does not match the linker language
// then force c or c++
// Force language if the file extension does not match.
std::string lang = this->LocalGenerator->GetSourceFileLanguage(sf);
const char* compileAs = 0;
if (needForceLang || (linkLanguage != lang)) {
if (lang !=
this->GlobalGenerator->GetLanguageFromExtension(
sf.GetExtension().c_str())) {
if (lang == "CXX") {
// force a C++ file type
compileAs = "CompileAsCpp";
@@ -2341,6 +2333,7 @@ void cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
compileAs = "CompileAsC";
}
}
bool noWinRT = this->TargetCompileAsWinRT && lang == "C";
// for the first time we need a new line if there is something
// produced here.
@@ -2737,13 +2730,6 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
this->LocalGenerator->AddCompileOptions(flags, this->GeneratorTarget,
langForClCompile, configName);
}
// set the correct language
if (linkLanguage == "C") {
clOptions.AddFlag("CompileAs", "CompileAsC");
}
if (linkLanguage == "CXX") {
clOptions.AddFlag("CompileAs", "CompileAsCpp");
}
// Put the IPO enabled configurations into a set.
if (this->GeneratorTarget->IsIPOEnabled(linkLanguage, configName)) {