2023-11-07 15:41:01 +01:00
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# PreventInSourceBuilds
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# ---------------------
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#
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# Prevent in-source builds
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#
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# It is generally acknowledged that it is preferable to run CMake out of source,
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# in a dedicated build directory. To prevent users from accidentally running
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# CMake in the source directory, just include this module.
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# make sure the user doesn't play dirty with symlinks
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get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
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get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
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# disallow in-source builds
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if("${srcdir}" STREQUAL "${bindir}")
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message(FATAL_ERROR "\
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CMake must not to be run in the source directory. \
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Rather create a dedicated build directory and run CMake there. \
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CMake now already created some files, to clean up after this aborted in-source compilation:
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rm -r CMakeCache.txt CMakeFiles
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or
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git clean -xdf
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")
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endif()
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2023-11-28 15:17:03 +01:00
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# Check for remnants of in source builds
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if(EXISTS "${CMAKE_SOURCE_DIR}/CMakeCache.txt" OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeFiles")
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message(FATAL_ERROR " \
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Remnants of in source CMake run detected, aborting!
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To clean up after this aborted in-source compilation:
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rm -r CMakeCache.txt CMakeFiles
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or
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git clean -xdf
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")
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endif()
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