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-rw-r--r--utils.cmake20
1 files changed, 20 insertions, 0 deletions
diff --git a/utils.cmake b/utils.cmake
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+
+function (disallow_intree_builds)
+ # Adapted from LLVM's toplevel CMakeLists.txt file
+ if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
+ message(FATAL_ERROR "
+ In-source builds are not allowed. CMake would overwrite the
+ makefiles distributed with utf8proc. Please create a directory
+ and run cmake from there. Building in a subdirectory is
+ fine, e.g.:
+
+ mkdir build
+ cd build
+ cmake ..
+
+ This process created the file `CMakeCache.txt' and the
+ directory `CMakeFiles'. Please delete them.
+
+ ")
+ endif()
+endfunction()