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project: Fix support for explicit RC language 

The check added in commit v3.6.0-rc1~293^2 (Diagnose recursive
project/enable_language without crashing, 2016-03-07) broke support for
enabling `RC` explicitly along with other languages like `C`.  The
reason is that we enable all listed languages at once so the internal
`enable_language(RC)` that we do while enabling `C` or `CXX` on some
platforms triggers the recursion check if `RC` is explicitly listed.

Ideally we should refactor things to only enable one language at a time,
but for now it is simplest to just exclude `RC` from the explicit list
until other languages are enabled, and then enable it.

Closes: #16330
This commit is contained in:
Brad King 2016-09-27 09:33:58 -04:00
parent 40c0482153
commit 9c5238dfd6
4 changed files with 25 additions and 2 deletions
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21
Source/cmMakefile.cxx
View File

@ -3142,7 +3142,26 @@ void cmMakefile::EnableLanguage(std::vector<std::string> const& lang,
{
this->AddDefinition("CMAKE_CFG_INTDIR",
this->GetGlobalGenerator()->GetCMakeCFGIntDir());
this->GetGlobalGenerator()->EnableLanguage(lang, this, optional);
// If RC is explicitly listed we need to do it after other languages.
// On some platforms we enable RC implicitly while enabling others.
// Do not let that look like recursive enable_language(RC).
std::vector<std::string> langs;
std::vector<std::string> langsRC;
langs.reserve(lang.size());
for (std::vector<std::string>::const_iterator i = lang.begin();
i != lang.end(); ++i) {
if (i->compare("RC") == 0) {
langsRC.push_back(*i);
} else {
langs.push_back(*i);
}
}
if (!langs.empty()) {
this->GetGlobalGenerator()->EnableLanguage(langs, this, optional);
}
if (!langsRC.empty()) {
this->GetGlobalGenerator()->EnableLanguage(langsRC, this, optional);
}
}
int cmMakefile::TryCompile(const std::string& srcdir,

2
Tests/RunCMake/CMakeLists.txt
View File

@ -207,7 +207,7 @@ add_RunCMake_test(include)
add_RunCMake_test(include_directories)
add_RunCMake_test(list)
add_RunCMake_test(message)
add_RunCMake_test(project)
add_RunCMake_test(project -DCMake_TEST_RESOURCES=${CMake_TEST_RESOURCES})
add_RunCMake_test(return)
add_RunCMake_test(set_property)
add_RunCMake_test(string)

1
Tests/RunCMake/project/ExplicitRC.cmake Normal file
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@ -0,0 +1 @@
project(ExplicitRC C RC)

3
Tests/RunCMake/project/RunCMakeTest.cmake
View File

@ -1,5 +1,8 @@
include(RunCMake)
if(CMake_TEST_RESOURCES)
run_cmake(ExplicitRC)
endif()
run_cmake(LanguagesImplicit)
run_cmake(LanguagesEmpty)
run_cmake(LanguagesNONE)