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Remove strict dependency on llvm-config.

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Depending on llvm-config allows for a few nice things (auto-detecting
LLVM source tree, version numbers, etc), but it's makes bootstrapping a
pain. Keep the llvm-config features around, but also fall back to being
able to configure based on -DLLVM_PATH=path/to/llvm.

Reviewers: jroelofs, loladiro

Reviewed By: loladiro

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5016

llvm-svn: 216482
This commit is contained in:
Dan Albert 2014-08-26 20:50:07 +00:00
parent f6fb780890
commit 6bd6b1c177
1 changed files with 20 additions and 22 deletions
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42
libcxxabi/CMakeLists.txt
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@ -10,12 +10,15 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
# Rely on llvm-config.
set(CONFIG_OUTPUT)
find_program(LLVM_CONFIG "llvm-config")
if(LLVM_CONFIG)
if(DEFINED LLVM_PATH)
set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree")
set(LLVM_MAIN_SRC_DIR ${LLVM_PATH})
set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules")
elseif(LLVM_CONFIG)
message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
set(CONFIG_COMMAND ${LLVM_CONFIG}
"--bindir"
"--includedir"
"--libdir"
"--prefix"
"--src-root")
execute_process(
@ -32,35 +35,30 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
message(STATUS "${CONFIG_COMMAND_STR}")
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
list(GET CONFIG_OUTPUT 0 INCLUDE_DIR)
list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT)
list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR)
set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/share/llvm/cmake")
set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py")
else()
message(FATAL_ERROR "llvm-config not found -- ${LLVM_CONFIG}")
message(FATAL_ERROR "llvm-config not found and LLVM_MAIN_SRC_DIR not defined")
endif()
list(GET CONFIG_OUTPUT 0 TOOLS_BINARY_DIR)
list(GET CONFIG_OUTPUT 1 INCLUDE_DIR)
list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
list(GET CONFIG_OUTPUT 3 LLVM_OBJ_ROOT)
list(GET CONFIG_OUTPUT 4 MAIN_SRC_DIR)
set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/share/llvm/cmake")
set(LLVMCONFIG_FILE "${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
if(EXISTS ${LLVMCONFIG_FILE})
if(EXISTS ${LLVM_CMAKE_PATH})
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
include(${LLVMCONFIG_FILE})
include("${LLVM_CMAKE_PATH}/AddLLVM.cmake")
include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake")
else()
message(FATAL_ERROR "Not found: ${LLVMCONFIG_FILE}")
message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}")
endif()
set(PACKAGE_NAME libcxxabi)
set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
set(PACKAGE_VERSION 3.6.0svn)
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")