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enable_language: Allow CMakeDetermine<LANG>Compiler module to fail early 

If the module reports a FATAL_ERROR, skip the rest of the steps to
enable the language to avoid unnecessary following error messages.
This commit is contained in:
Brad King 2015-06-29 14:51:14 -04:00
parent bbfebcbc13
commit 327490e698
6 changed files with 15 additions and 0 deletions
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4
Source/cmGlobalGenerator.cxx
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@ -564,6 +564,10 @@ cmGlobalGenerator::EnableLanguage(std::vector<std::string>const& languages,
cmSystemTools::Error("Could not find cmake module file: ",
determineCompiler.c_str());
}
if (cmSystemTools::GetFatalErrorOccured())
{
return;
}
needTestLanguage[lang] = true;
// Some generators like visual studio should not use the env variables
// So the global generator can specify that in this variable

1
Tests/RunCMake/Languages/DetermineFail-result.txt Normal file
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@ -0,0 +1 @@
1

5
Tests/RunCMake/Languages/DetermineFail-stderr.txt Normal file
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@ -0,0 +1,5 @@
^CMake Error at Modules/CMakeDetermineFailCompiler.cmake:[0-9]+ \(message\):
This language is not supported.
Call Stack \(most recent call first\):
DetermineFail.cmake:[0-9]+ \(enable_language\)
CMakeLists.txt:[0-9]+ \(include\)

2
Tests/RunCMake/Languages/DetermineFail.cmake Normal file
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@ -0,0 +1,2 @@
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/Modules)
enable_language(Fail)

1
Tests/RunCMake/Languages/Modules/CMakeDetermineFailCompiler.cmake Normal file
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@ -0,0 +1 @@
message(FATAL_ERROR "This language is not supported.")

2
Tests/RunCMake/Languages/RunCMakeTest.cmake
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@ -4,3 +4,5 @@ run_cmake(NoLangSHARED)
run_cmake(LINK_LANGUAGE-genex)
run_cmake(link-libraries-TARGET_FILE-genex)
run_cmake(link-libraries-TARGET_FILE-genex-ok)
run_cmake(DetermineFail)