1macro(find_llvm_parts) 2# Rely on llvm-config. 3 set(CONFIG_OUTPUT) 4 if(NOT LLVM_CONFIG_PATH) 5 find_program(LLVM_CONFIG_PATH "llvm-config") 6 endif() 7 if(DEFINED LLVM_PATH) 8 set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include") 9 set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree") 10 set(LLVM_MAIN_SRC_DIR ${LLVM_PATH}) 11 set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules") 12 elseif(LLVM_CONFIG_PATH) 13 message(STATUS "Found LLVM_CONFIG_PATH as ${LLVM_CONFIG_PATH}") 14 set(LIBCXX_USING_INSTALLED_LLVM 1) 15 set(CONFIG_COMMAND ${LLVM_CONFIG_PATH} 16 "--includedir" 17 "--prefix" 18 "--src-root") 19 execute_process( 20 COMMAND ${CONFIG_COMMAND} 21 RESULT_VARIABLE HAD_ERROR 22 OUTPUT_VARIABLE CONFIG_OUTPUT 23 ) 24 if(NOT HAD_ERROR) 25 string(REGEX REPLACE 26 "[ \t]*[\r\n]+[ \t]*" ";" 27 CONFIG_OUTPUT ${CONFIG_OUTPUT}) 28 else() 29 string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}") 30 message(STATUS "${CONFIG_COMMAND_STR}") 31 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 32 endif() 33 34 list(GET CONFIG_OUTPUT 0 INCLUDE_DIR) 35 list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT) 36 list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR) 37 38 set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include") 39 set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree") 40 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") 41 42 # --cmakedir is supported since llvm r291218 (4.0 release) 43 execute_process( 44 COMMAND ${LLVM_CONFIG_PATH} --cmakedir 45 RESULT_VARIABLE HAD_ERROR 46 OUTPUT_VARIABLE CONFIG_OUTPUT 47 ERROR_QUIET) 48 if(NOT HAD_ERROR) 49 string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH) 50 else() 51 set(LLVM_CMAKE_PATH 52 "${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") 53 endif() 54 else() 55 set(LLVM_FOUND OFF) 56 message(WARNING "UNSUPPORTED LIBCXX CONFIGURATION DETECTED: " 57 "llvm-config not found and LLVM_PATH not defined.\n" 58 "Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config " 59 "or -DLLVM_PATH=path/to/llvm-source-root.") 60 return() 61 endif() 62 63 if (EXISTS "${LLVM_CMAKE_PATH}") 64 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") 65 elseif (EXISTS "${LLVM_MAIN_SRC_DIR}/cmake/modules") 66 list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules") 67 else() 68 set(LLVM_FOUND OFF) 69 message(WARNING "Neither ${LLVM_CMAKE_PATH} nor ${LLVM_MAIN_SRC_DIR}/cmake/modules found") 70 return() 71 endif() 72 73 set(LLVM_FOUND ON) 74endmacro(find_llvm_parts) 75 76macro(configure_out_of_tree_llvm) 77 message(STATUS "Configuring for standalone build.") 78 set(LIBCXX_STANDALONE_BUILD 1) 79 80 find_llvm_parts() 81 82 # Add LLVM Functions -------------------------------------------------------- 83 if (LLVM_FOUND AND LIBCXX_USING_INSTALLED_LLVM) 84 include(LLVMConfig) # For TARGET_TRIPLE 85 else() 86 if (WIN32) 87 set(LLVM_ON_UNIX 0) 88 set(LLVM_ON_WIN32 1) 89 else() 90 set(LLVM_ON_UNIX 1) 91 set(LLVM_ON_WIN32 0) 92 endif() 93 endif() 94 if (LLVM_FOUND) 95 include(AddLLVM OPTIONAL) 96 endif() 97 98 # LLVM Options -------------------------------------------------------------- 99 if (NOT DEFINED LLVM_INCLUDE_TESTS) 100 set(LLVM_INCLUDE_TESTS ${LLVM_FOUND}) 101 endif() 102 if (NOT DEFINED LLVM_INCLUDE_DOCS) 103 set(LLVM_INCLUDE_DOCS ${LLVM_FOUND}) 104 endif() 105 if (NOT DEFINED LLVM_ENABLE_SPHINX) 106 set(LLVM_ENABLE_SPHINX OFF) 107 endif() 108 109 # Required LIT Configuration ------------------------------------------------ 110 # Define the default arguments to use with 'lit', and an option for the user 111 # to override. 112 set(LIT_ARGS_DEFAULT "-sv --show-xfail --show-unsupported") 113 if (MSVC OR XCODE) 114 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 115 endif() 116 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 117 118 # Required doc configuration 119 if (LLVM_ENABLE_SPHINX) 120 find_package(Sphinx REQUIRED) 121 endif() 122 123 if (LLVM_ON_UNIX AND NOT APPLE) 124 set(LLVM_HAVE_LINK_VERSION_SCRIPT 1) 125 else() 126 set(LLVM_HAVE_LINK_VERSION_SCRIPT 0) 127 endif() 128endmacro(configure_out_of_tree_llvm) 129 130configure_out_of_tree_llvm() 131