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cmMakefile: Add methods for checking availability of a feature.

This commit is contained in:
Stephen Kelly 2014-05-15 11:54:24 +02:00
parent b6dedf034e
commit aa8a6fcee8
2 changed files with 120 additions and 0 deletions
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112
Source/cmMakefile.cxx
View File

@ -5120,6 +5120,118 @@ CompileFeaturesAvailable(const std::string& lang, std::string *error) const
return featuresKnown;
}
//----------------------------------------------------------------------------
bool cmMakefile::HaveFeatureAvailable(cmTarget const* target,
std::string const& lang,
const std::string& feature) const
{
return lang == "C"
? this->HaveCFeatureAvailable(target, feature)
: this->HaveCxxFeatureAvailable(target, feature);
}
//----------------------------------------------------------------------------
bool cmMakefile::
HaveCFeatureAvailable(cmTarget const* target, const std::string& feature) const
{
bool needC90 = false;
bool needC99 = false;
bool needC11 = false;
this->CheckNeededCLanguage(feature, needC90, needC99, needC11);
const char *existingCStandard = target->GetProperty("C_STANDARD");
if (!existingCStandard)
{
existingCStandard = this->GetDefinition("CMAKE_C_STANDARD_DEFAULT");
}
if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS),
cmStrCmp(existingCStandard)) == cmArrayEnd(C_STANDARDS))
{
cmOStringStream e;
e << "The C_STANDARD property on target \"" << target->GetName()
<< "\" contained an invalid value: \"" << existingCStandard << "\".";
this->IssueMessage(cmake::FATAL_ERROR, e.str().c_str());
return false;
}
const char * const *existingCIt = existingCStandard
? std::find_if(cmArrayBegin(C_STANDARDS),
cmArrayEnd(C_STANDARDS),
cmStrCmp(existingCStandard))
: cmArrayEnd(C_STANDARDS);
if (needC11 && existingCStandard && existingCIt <
std::find_if(cmArrayBegin(C_STANDARDS),
cmArrayEnd(C_STANDARDS),
cmStrCmp("11")))
{
return false;
}
else if(needC99 && existingCStandard && existingCIt <
std::find_if(cmArrayBegin(C_STANDARDS),
cmArrayEnd(C_STANDARDS),
cmStrCmp("99")))
{
return false;
}
else if(needC90 && existingCStandard && existingCIt <
std::find_if(cmArrayBegin(C_STANDARDS),
cmArrayEnd(C_STANDARDS),
cmStrCmp("90")))
{
return false;
}
return true;
}
//----------------------------------------------------------------------------
bool cmMakefile::HaveCxxFeatureAvailable(cmTarget const* target,
const std::string& feature) const
{
bool needCxx98 = false;
bool needCxx11 = false;
this->CheckNeededCxxLanguage(feature, needCxx98, needCxx11);
const char *existingCxxStandard = target->GetProperty("CXX_STANDARD");
if (!existingCxxStandard)
{
existingCxxStandard = this->GetDefinition("CMAKE_CXX_STANDARD_DEFAULT");
}
if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS),
cmStrCmp(existingCxxStandard)) == cmArrayEnd(CXX_STANDARDS))
{
cmOStringStream e;
e << "The CXX_STANDARD property on target \"" << target->GetName()
<< "\" contained an invalid value: \"" << existingCxxStandard << "\".";
this->IssueMessage(cmake::FATAL_ERROR, e.str());
return false;
}
const char * const *existingCxxIt = existingCxxStandard
? std::find_if(cmArrayBegin(CXX_STANDARDS),
cmArrayEnd(CXX_STANDARDS),
cmStrCmp(existingCxxStandard))
: cmArrayEnd(CXX_STANDARDS);
if (needCxx11 && existingCxxIt < std::find_if(cmArrayBegin(CXX_STANDARDS),
cmArrayEnd(CXX_STANDARDS),
cmStrCmp("11")))
{
return false;
}
else if(needCxx98 && existingCxxIt <
std::find_if(cmArrayBegin(CXX_STANDARDS),
cmArrayEnd(CXX_STANDARDS),
cmStrCmp("98")))
{
return false;
}
return true;
}
//----------------------------------------------------------------------------
void cmMakefile::CheckNeededCxxLanguage(const std::string& feature,
bool& needCxx98,

8
Source/cmMakefile.h
View File

@ -895,6 +895,9 @@ public:
const char* CompileFeaturesAvailable(const std::string& lang,
std::string *error) const;
bool HaveFeatureAvailable(cmTarget const* target, std::string const& lang,
const std::string& feature) const;
void ClearMatches();
void StoreMatches(cmsys::RegularExpression& re);
@ -1115,6 +1118,11 @@ private:
bool& needC99, bool& needC11) const;
void CheckNeededCxxLanguage(const std::string& feature, bool& needCxx98,
bool& needCxx11) const;
bool HaveCFeatureAvailable(cmTarget const* target,
const std::string& feature) const;
bool HaveCxxFeatureAvailable(cmTarget const* target,
const std::string& feature) const;
};
//----------------------------------------------------------------------------