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# Find the native LLVM includes and library
#
# LLVM_INCLUDE_DIR - where to find llvm include files
# LLVM_LIBRARY_DIR - where to find llvm libs
# LLVM_CFLAGS - llvm compiler flags
# LLVM_LFLAGS - llvm linker flags
# LLVM_MODULE_LIBS - list of llvm libs for working with modules.
# LLVM_FOUND - True if llvm found.
if (LLVM_INSTALL_DIR)
find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-32 llvm-config-3.2 llvm-config DOC "llvm-config executable" PATHS ${LLVM_INSTALL_DIR} NO_DEFAULT_PATH)
else (LLVM_INSTALL_DIR)
find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-32 llvm-config-3.2 llvm-config DOC "llvm-config executable")
endif (LLVM_INSTALL_DIR)
if (LLVM_CONFIG_EXECUTABLE)
message(STATUS "LLVM llvm-config found at: ${LLVM_CONFIG_EXECUTABLE}")
else (LLVM_CONFIG_EXECUTABLE)
message(FATAL_ERROR "Could NOT find LLVM executable, please add -DLLVM_INSTALL_DIR=/path/to/llvm-config/ in cmake command")
endif (LLVM_CONFIG_EXECUTABLE)
if (LLVM_FIND_VERSION_MAJOR AND LLVM_FIND_VERSION_MINOR)
SET(LLVM_FIND_VERSION_NODOT "${LLVM_FIND_VERSION_MAJOR}${LLVM_FIND_VERSION_MINOR}")
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --version
OUTPUT_VARIABLE LLVM_VERSION
)
string(REGEX REPLACE "([0-9]*)\\.([0-9]*)[^0-9]*" "\\1\\2 " LLVM_VERSION_NODOT ${LLVM_VERSION})
if (LLVM_VERSION_NODOT VERSION_LESS LLVM_FIND_VERSION_NODOT)
message(FATAL_ERROR "imcompatible LLVM version ${LLVM_VERSION} required ${LLVM_FIND_VERSION}")
else (LLVM_VERSION_NODOT VERSION_LESS LLVM_FIND_VERSION_NODOT)
if (LLVM_VERSION_NODOT VERSION_EQUAL LLVM_FIND_VERSION_NODOT)
message(STATUS "find stable LLVM version ${LLVM_VERSION}")
else (LLVM_VERSION_NODOT VERSION_EQUAL LLVM_FIND_VERSION_NODOT)
message(STATUS "find unstable LLVM version ${LLVM_VERSION}")
endif (LLVM_VERSION_NODOT VERSION_EQUAL LLVM_FIND_VERSION_NODOT)
add_definitions("-DLLVM_${LLVM_VERSION_NODOT}")
endif (LLVM_VERSION_NODOT VERSION_LESS LLVM_FIND_VERSION_NODOT)
endif (LLVM_FIND_VERSION_MAJOR AND LLVM_FIND_VERSION_MINOR)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
OUTPUT_VARIABLE LLVM_INCLUDE_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir
OUTPUT_VARIABLE LLVM_LIBRARY_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --cppflags
OUTPUT_VARIABLE LLVM_CFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags
OUTPUT_VARIABLE LLVM_LFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs
OUTPUT_VARIABLE LLVM_MODULE_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
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