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CMake: Disallow in-source builds except when building with the Visual

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Studio IDE. CMake would overwrite the makefiles distributed with LLVM.

llvm-svn: 59292
This commit is contained in:
Oscar Fuentes 2008-11-14 03:43:18 +00:00
parent c6f581034a
commit e7f0c69eeb
1 changed files with 9 additions and 0 deletions
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9
CMakeLists.txt
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@ -5,6 +5,15 @@ set(PACKAGE_NAME llvm)
set(PACKAGE_VERSION svn)
set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
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 LLVM.
Please create a directory and run cmake from there, passing the path
to this source directory as the last argument.
This process created the file `CMakeCache.txt' and the directory `CMakeFiles'.
Please delete them.")
endif()
include(FindPerl)
set(LLVM_MAIN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR})