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Handle changing of LLVM_ENABLE_FFI.

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If someone first configure build with LLVM_ENABLE_FFI=1 and then turn it
off, the build will fail in lib/ExecutionEngine/Interpreter because
Interpreter will try still to #include <ffi/ffi.h>, but there are no
include_directories(${FFI_INCLUDE_DIR}) now.

This patch unset()'s HAVE_FFI_H and HAVE_FFI_FFI_H from cache file if
LLVM_ENABLE_FFI=0. This forces CMake to update config.h.

Patch by arrowdodger!

llvm-svn: 128769
This commit is contained in:
Oscar Fuentes 2011-04-02 13:21:12 +00:00
parent c4a22b7cd5
commit a261616b38
1 changed files with 4 additions and 0 deletions
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4
cmake/config-ix.cmake
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@ -271,6 +271,10 @@ if( LLVM_ENABLE_FFI )
check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL) check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH}) list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH}) list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
else()
unset(HAVE_FFI_FFI_H CACHE)
unset(HAVE_FFI_H CACHE)
unset(HAVE_FFI_CALL CACHE)
endif( LLVM_ENABLE_FFI ) endif( LLVM_ENABLE_FFI )
# Define LLVM_MULTITHREADED if gcc atomic builtins exists. # Define LLVM_MULTITHREADED if gcc atomic builtins exists.