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Better error handling for CMake LLVM config file detection.

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This commit is contained in:
Christian Kamm
2009-07-03 18:49:42 +02:00
parent 22b36384b0
commit feaefc3314
1 changed files with 12 additions and 4 deletions
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16
CMakeLists.txt
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@@ -144,10 +144,18 @@ execute_process(
# build a define that contains all LLVM targets required and is usable for
# preprocessor code generation. start with the native target.
find_path(LLVM_CONFIG_FILE_PATH config.h PATHS ${LLVM_INCLUDEDIR}/llvm/Config ${LLVM_INCLUDEDIR}/Config NO_DEFAULT_PATH)
message(${LLVM_CONFIG_FILE_PATH}/config.h)
file(STRINGS ${LLVM_CONFIG_FILE_PATH}/config.h LLVM_NATIVE_ARCH REGEX "^#define LLVM_NATIVE_ARCH")
string(REGEX REPLACE "^#define LLVM_NATIVE_ARCH (.*)Target$" "\\1" LLVM_NATIVE_ARCH ${LLVM_NATIVE_ARCH})
set(LLVM_MODULES_DEFINE "LLVM_TARGET(${LLVM_NATIVE_ARCH})")
if(LLVM_CONFIG_FILE_PATH STREQUAL "LLVM_CONFIG_FILE_PATH-NOTFOUND")
message("Couldn't find your llvm Config.h file in ${LLVM_INCLUDEDIR}, no native target will be initialized.")
else(LLVM_CONFIG_FILE_PATH STREQUAL "LLVM_CONFIG_FILE_PATH-NOTFOUND")
file(STRINGS ${LLVM_CONFIG_FILE_PATH}/config.h LLVM_NATIVE_ARCH REGEX "^#define LLVM_NATIVE_ARCH")
if(LLVM_NATIVE_ARCH)
string(REGEX REPLACE "^#define LLVM_NATIVE_ARCH (.*)Target$" "\\1" LLVM_NATIVE_ARCH ${LLVM_NATIVE_ARCH})
message("Found native target ${LLVM_NATIVE_ARCH}")
set(LLVM_MODULES_DEFINE "LLVM_TARGET(${LLVM_NATIVE_ARCH})")
else(LLVM_NATIVE_ARCH)
message("Couldn't find the LLVM_NATIVE_ARCH define in ${LLVM_CONFIG_FILE_PATH}/config.h. Probably you have an older LLVM and can ignore this warning.")
endif(LLVM_NATIVE_ARCH)
endif(LLVM_CONFIG_FILE_PATH STREQUAL "LLVM_CONFIG_FILE_PATH-NOTFOUND")
# chain the extra target list to the define
foreach(EXTRA_TARGET ${EXTRA_LLVM_MODULES})
set(LLVM_MODULES_DEFINE "${LLVM_MODULES_DEFINE} LLVM_TARGET(${EXTRA_TARGET})")