CMake 有两个未记录的选项:
CMAKE_DISABLE_SOURCE_CHANGES
和CMAKE_DISABLE_IN_SOURCE_BUILD
cmake_minimum_required (VERSION 2.8)
# add this options before PROJECT keyword
set(CMAKE_DISABLE_SOURCE_CHANGES ON)
set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
project (HELLO)
add_executable (hello hello.cxx)
-
andrew@manchester:~/src% cmake .
CMake Error at /usr/local/share/cmake-2.8/Modules/CMakeDetermineSystem.cmake:160 (FILE):
file attempted to write a file: /home/andrew/src/CMakeFiles/CMakeOutput.log
into a source directory.
/home/selivanov/cmake-2.8.8/Source/cmMakefile.cxx
bool cmMakefile::CanIWriteThisFile(const char* fileName)
{
if ( !this->IsOn("CMAKE_DISABLE_SOURCE_CHANGES") )
{
return true;
}
// If we are doing an in-source build, than the test will always fail
if ( cmSystemTools::SameFile(this->GetHomeDirectory(),
this->GetHomeOutputDirectory()) )
{
if ( this->IsOn("CMAKE_DISABLE_IN_SOURCE_BUILD") )
{
return false;
}
return true;
}
// Check if this is subdirectory of the source tree but not a
// subdirectory of a build tree
if ( cmSystemTools::IsSubDirectory(fileName,
this->GetHomeDirectory()) &&
!cmSystemTools::IsSubDirectory(fileName,
this->GetHomeOutputDirectory()) )
{
return false;
}
return true;
}