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Factored out LLVM detection into separate CMake module.

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This commit is contained in:
David Nadlinger
2011-11-12 17:48:28 +01:00
parent 6e714f999e
commit bafe9c8e03
2 changed files with 91 additions and 56 deletions
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CMakeLists.txt
+18 -56
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@@ -1,18 +1,19 @@
project(ldc)
cmake_minimum_required(VERSION 2.6)
# actually, 2.4 will work, with a warning
# if we required 2.4, 2.6+ would switch to a compatibility mode and cause problems on 2.6+ specifics
# LLVM-CONFIG is written in perl, for this reason we need to know here is perl
include(FindPerl)
if(NOT PERL)
message(FATAL_ERROR "perl not found")
endif(NOT PERL)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules")
set(EXTRA_LLVM_MODULES "" CACHE STRING
"Extra LLVM components to link in (see llvm-config --components)")
separate_arguments(EXTRA_LLVM_MODULES)
# We need to find exactly the right LLVM version, our code usually does not
# work across LLVM »minor« releases.
find_package(LLVM 2.9 EXACT REQUIRED
bitwriter linker ipo instrumentation backend ${EXTRA_LLVM_MODULES})
set(LLVM_CONFIG_HEADER "config.h" CACHE STRING "Filename of llvm config header fequently see: config.h, config-32.h, config-64.h")
####################
# LLVM
####################
include(FindPkgConfig)
if(NOT PKG_CONFIG_FOUND)
message(FATAL_ERROR "pkg-config not found")
@@ -28,37 +29,6 @@ else(NOT PKG_CONFIG_FOUND)
endif(NOT LIBCONFIGPP_FOUND)
endif(NOT PKG_CONFIG_FOUND)
find_program(LLVM_CONFIG llvm-config ${LLVM_INSTDIR}/bin DOC "path to llvm-config tool")
# get llvm's install dir. a little hackish, we could do something like llvm-config --prefix, but this does as well
string(REPLACE "/bin/llvm-config" "" LLVM_DIR ${LLVM_CONFIG})
set(LLVM_INSTDIR ${LLVM_DIR} CACHE PATH "LLVM installation directory" FORCE)
set(LLVM_CONFIG_HEADER "config.h" CACHE STRING "Filename of llvm config header fequently see: config.h, config-32.h, config-64.h")
if(NOT LLVM_INSTDIR)
message(FATAL_ERROR "llvm not found")
endif(NOT LLVM_INSTDIR)
execute_process(
COMMAND ${PERL_EXECUTABLE} ${LLVM_CONFIG} --host-target
OUTPUT_VARIABLE HOST_TARGET
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${PERL_EXECUTABLE} ${LLVM_CONFIG} --cxxflags
OUTPUT_VARIABLE LLVM_CXXFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${PERL_EXECUTABLE} ${LLVM_CONFIG} --ldflags
OUTPUT_VARIABLE LLVM_LDFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${PERL_EXECUTABLE} ${LLVM_CONFIG} --includedir
OUTPUT_VARIABLE LLVM_INCLUDEDIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
####################
# LDC
####################
@@ -151,31 +121,23 @@ set(LDC_GENERATED
)
########## idgen and impcnvgen done
include_directories(. ${DMDFE_PATH} ${DMDFE_PATH}/root ${PROJECT_BINARY_DIR}/${DMDFE_PATH} ${PROJECT_SOURCE_DIR} ${LLVM_INCLUDEDIR})
set(EXTRA_LLVM_MODULES "" CACHE STRING "extra llvm components to link in (see llvm-config --components)")
separate_arguments(EXTRA_LLVM_MODULES)
execute_process(
COMMAND ${PERL_EXECUTABLE} ${LLVM_CONFIG} --libfiles bitwriter linker ipo instrumentation backend ${EXTRA_LLVM_MODULES}
OUTPUT_VARIABLE LLVM_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
include_directories(. ${DMDFE_PATH} ${DMDFE_PATH}/root ${PROJECT_BINARY_DIR}/${DMDFE_PATH} ${PROJECT_SOURCE_DIR} ${LLVM_INCLUDE_DIRS})
##########
# 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 ${LLVM_CONFIG_HEADER} PATHS ${LLVM_INCLUDEDIR}/llvm/Config ${LLVM_INCLUDEDIR}/Config NO_DEFAULT_PATH)
find_file(LLVM_CONFIG_FILE_PATH ${LLVM_CONFIG_HEADER} PATHS ${LLVM_ROOT_DIR}/include/llvm/Config ${LLVM_INCLUDE_DIRS} NO_DEFAULT_PATH)
if(LLVM_CONFIG_FILE_PATH STREQUAL "LLVM_CONFIG_FILE_PATH-NOTFOUND")
message("Couldn't find your llvm ${LLVM_CONFIG_HEADER} file in ${LLVM_INCLUDEDIR}, no native target will be initialized.")
message("Couldn't find your llvm ${LLVM_CONFIG_HEADER} file in ${LLVM_ROOT_DIR}, no native target will be initialized.")
else(LLVM_CONFIG_FILE_PATH STREQUAL "LLVM_CONFIG_FILE_PATH-NOTFOUND")
if(NOT HOST_TARGET AND NOT DEFAULT_TARGET)
file(STRINGS ${LLVM_CONFIG_FILE_PATH}/${LLVM_CONFIG_HEADER} LLVM_HOSTTRIPLE REGEX "^#define LLVM_HOSTTRIPLE")
file(STRINGS ${LLVM_CONFIG_FILE_PATH} LLVM_HOSTTRIPLE REGEX "^#define LLVM_HOSTTRIPLE")
if(LLVM_HOSTTRIPLE)
string(REGEX REPLACE "^#define LLVM_HOSTTRIPLE \"(.*)\"$" "\\1" HOST_TARGET ${LLVM_HOSTTRIPLE})
endif(LLVM_HOSTTRIPLE)
endif(NOT HOST_TARGET AND NOT DEFAULT_TARGET)
file(STRINGS ${LLVM_CONFIG_FILE_PATH}/${LLVM_CONFIG_HEADER} LLVM_NATIVE_ARCH REGEX "^#define LLVM_NATIVE_ARCH")
file(STRINGS ${LLVM_CONFIG_FILE_PATH} LLVM_NATIVE_ARCH REGEX "^#define LLVM_NATIVE_ARCH")
if(LLVM_NATIVE_ARCH)
string(REGEX REPLACE "^#define LLVM_NATIVE_ARCH (.*)(Target|)$" "\\1" LLVM_NATIVE_ARCH ${LLVM_NATIVE_ARCH})
message(STATUS "Found native target ${LLVM_NATIVE_ARCH}")
@@ -282,7 +244,7 @@ set_target_properties(
)
# LDFLAGS should actually be in target property LINK_FLAGS, but this works, and gets around linking problems
target_link_libraries(${LDC_EXE} "${LLVM_LDFLAGS} ${LLVM_LIBS}" ${LIBCONFIG_LDFLAGS} config++)
target_link_libraries(${LDC_EXE} "${LLVM_LDFLAGS} ${LLVM_LIBRARIES}" ${LIBCONFIG_LDFLAGS} config++)
if(WIN32)
target_link_libraries(${LDC_EXE} imagehlp psapi)
elseif(UNIX)