Revert r243503 "[libcxx] Cleanup CMake configuration and integrate with LLVM"

This caused clang-format to stop linking on Mac; see PR24306.

llvm-svn: 243550

4 files changed, 17 insertions, 243 deletions

diff --git a/libcxx/cmake/Modules/FindLLVM.cmake b/libcxx/cmake/Modules/FindLLVM.cmake
deleted file mode 100644
index 35105c8bc31..00000000000
--- a/libcxx/cmake/Modules/FindLLVM.cmake
+++ /dev/null
@@ -1,79 +0,0 @@
-
-if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-  # Rely on llvm-config.
-  set(CONFIG_OUTPUT)
-  find_program(LLVM_CONFIG "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}
-      "--includedir"
-      "--prefix"
-      "--src-root")
-    execute_process(
-      COMMAND ${CONFIG_COMMAND}
-      RESULT_VARIABLE HAD_ERROR
-      OUTPUT_VARIABLE CONFIG_OUTPUT
-    )
-    if(NOT HAD_ERROR)
-      string(REGEX REPLACE
-        "[ \t]*[\r\n]+[ \t]*" ";"
-        CONFIG_OUTPUT ${CONFIG_OUTPUT})
-    else()
-      string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
-      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")
-  else()
-    message(FATAL_ERROR "llvm-config not found and LLVM_MAIN_SRC_DIR not defined. "
-                        "Reconfigure with -DLLVM_CONFIG=path/to/llvm-config "
-                        "or -DLLVM_PATH=path/to/llvm-source-root.")
-  endif()
-
-  if (NOT EXISTS ${LLVM_MAIN_SRC_DIR})
-    message(FATAL_ERROR "Not found: ${LLVM_MAIN_SRC_DIR}")
-  endif()
-
-  if(NOT EXISTS ${LLVM_CMAKE_PATH})
-    message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}")
-  endif()
-
-  list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
-  list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
-
-
-  if(LLVM_LIT)
-    # Define the default arguments to use with 'lit', and an option for the user
-    # to override.
-    set(LIT_ARGS_DEFAULT "-sv --show-xfail --show-unsupported")
-    if (MSVC OR XCODE)
-      set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
-    endif()
-    set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
-
-    # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
-    if( WIN32 AND NOT CYGWIN )
-      set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
-    endif()
-  else()
-    set(LLVM_INCLUDE_TESTS OFF)
-  endif()
-
-  set(LIBCXX_BUILT_STANDALONE 1)
-else()
-  set(LLVM_MAIN_SRC_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Path to LLVM source tree")
-  set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py")
-endif()
diff --git a/libcxx/cmake/Modules/HandleLibCXXABI.cmake b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
index 4224882f422..73723e3559b 100644
--- a/libcxx/cmake/Modules/HandleLibCXXABI.cmake
+++ b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
@@ -58,21 +58,6 @@ macro(setup_abi_lib abidefines abilib abifiles abidirs)
 
 endmacro()
 
-# Setup the default options if LIBCXX_CXX_ABI is not specified.
-if (NOT LIBCXX_CXX_ABI)
-  if (NOT DEFINED LIBCXX_BUILT_STANDALONE AND
-      IS_DIRECTORY "${CMAKE_SOURCE_DIR}/projects/libcxxabi")
-    set(LIBCXX_CXX_ABI_LIBNAME "libcxxabi")
-    set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${CMAKE_SOURCE_DIR}/projects/libcxxabi/include")
-    set(LIBCXX_CXX_ABI_INTREE 1)
-  else ()
-    set(LIBCXX_CXX_ABI_LIBNAME "none")
-  endif ()
-else ()
-  set(LIBCXX_CXX_ABI_LIBNAME "${LIBCXX_CXX_ABI}")
-endif ()
-
-# Configure based on the selected ABI library.
 if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++" OR
     "${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libsupc++")
   set(_LIBSUPCXX_INCLUDE_FILES
diff --git a/libcxx/cmake/Modules/HandleLibcxxFlags.cmake b/libcxx/cmake/Modules/HandleLibcxxFlags.cmake
deleted file mode 100644
index 2a450daffe7..00000000000
--- a/libcxx/cmake/Modules/HandleLibcxxFlags.cmake
+++ /dev/null
@@ -1,147 +0,0 @@
-# HandleLibcxxFlags - A set of macros used to setup the flags used to compile
-# and link libc++. These macros add flags to the following CMake variables.
-# - LIBCXX_COMPILE_FLAGS: flags used to compile libc++
-# - LIBCXX_LINK_FLAGS: flags used to link libc++
-# - LIBCXX_LIBRARIES: libraries to link libc++ to.
-
-include(CheckCXXCompilerFlag)
-
-unset(add_flag_if_supported)
-
-# Mangle the name of a compiler flag into a valid CMake identifier.
-# Ex: --std=c++11 -> STD_EQ_CXX11
-macro(mangle_name str output)
-  string(STRIP "${str}" strippedStr)
-  string(REGEX REPLACE "^/" "" strippedStr "${strippedStr}")
-  string(REGEX REPLACE "^-+" "" strippedStr "${strippedStr}")
-  string(REGEX REPLACE "-+$" "" strippedStr "${strippedStr}")
-  string(REPLACE "-" "_" strippedStr "${strippedStr}")
-  string(REPLACE "=" "_EQ_" strippedStr "${strippedStr}")
-  string(REPLACE "+" "X" strippedStr "${strippedStr}")
-  string(TOUPPER "${strippedStr}" ${output})
-endmacro()
-
-# Remove a list of flags from all CMake variables that affect compile flags.
-# This can be used to remove unwanted flags specified on the command line
-# or added in other parts of LLVM's cmake configuration.
-macro(remove_flags)
-  foreach(var ${ARGN})
-    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-    string(REPLACE "${var}" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
-    string(REPLACE "${var}" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
-    string(REPLACE "${var}" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
-    string(REPLACE "${var}" "" CMAKE_SHARED_MODULE_FLAGS "${CMAKE_SHARED_MODULE_FLAGS}")
-    remove_definitions(${var})
-  endforeach()
-endmacro(remove_flags)
-
-# Add a macro definition if condition is true.
-macro(define_if condition def)
-  if (${condition})
-    add_definitions(${def})
-  endif()
-endmacro()
-
-# Add a macro definition if condition is not true.
-macro(define_if_not condition def)
-  if (NOT ${condition})
-    add_definitions(${def})
-  endif()
-endmacro()
-
-# Add a specified list of flags to both 'LIBCXX_COMPILE_FLAGS' and
-# 'LIBCXX_LINK_FLAGS'.
-macro(add_flags)
-  foreach(value ${ARGN})
-    list(APPEND LIBCXX_COMPILE_FLAGS ${value})
-    list(APPEND LIBCXX_LINK_FLAGS ${value})
-  endforeach()
-endmacro()
-
-# If the specified 'condition' is true then add a list of flags to both
-# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'.
-macro(add_flags_if condition)
-  if (${condition})
-    add_flags(${ARGN})
-  endif()
-endmacro()
-
-# Add each flag in the list to LIBCXX_COMPILE_FLAGS and LIBCXX_LINK_FLAGS
-# if that flag is supported by the current compiler.
-macro(add_flags_if_supported)
-  foreach(flag ${ARGN})
-      mangle_name("${flag}" flagname)
-      check_cxx_compiler_flag("${flag}" "LIBCXX_SUPPORTS_${flagname}_FLAG")
-      add_flags_if(LIBCXX_SUPPORTS_${flagname}_FLAG ${flag})
-  endforeach()
-endmacro()
-
-# Add a list of flags to 'LIBCXX_COMPILE_FLAGS'.
-macro(add_compile_flags)
-  foreach(f ${ARGN})
-    list(APPEND LIBCXX_COMPILE_FLAGS ${f})
-  endforeach()
-endmacro()
-
-# If 'condition' is true then add the specified list of flags to
-# 'LIBCXX_COMPILE_FLAGS'
-macro(add_compile_flags_if condition)
-  if (${condition})
-    add_compile_flags(${ARGN})
-  endif()
-endmacro()
-
-# For each specified flag, add that flag to 'LIBCXX_COMPILE_FLAGS' if the
-# flag is supported by the C++ compiler.
-macro(add_compile_flags_if_supported)
-  foreach(flag ${ARGN})
-      mangle_name("${flag}" flagname)
-      check_cxx_compiler_flag("-Werror ${flag}" "LIBCXX_SUPPORTS_${flagname}_FLAG")
-      add_compile_flags_if(LIBCXX_SUPPORTS_${flagname}_FLAG ${flag})
-  endforeach()
-endmacro()
-
-# Add a list of flags to 'LIBCXX_LINK_FLAGS'.
-macro(add_link_flags)
-  foreach(f ${ARGN})
-    list(APPEND LIBCXX_LINK_FLAGS ${f})
-  endforeach()
-endmacro()
-
-# If 'condition' is true then add the specified list of flags to
-# 'LIBCXX_LINK_FLAGS'
-macro(add_link_flags_if condition)
-  if (${condition})
-    add_link_flags(${ARGN})
-  endif()
-endmacro()
-
-# For each specified flag, add that flag to 'LIBCXX_LINK_FLAGS' if the
-# flag is supported by the C++ compiler.
-macro(add_link_flags_if_supported)
-  foreach(flag ${ARGN})
-    mangle_name("${flag}" flagname)
-    check_cxx_compiler_flag("${flag}" "LIBCXX_SUPPORTS_${flagname}_FLAG")
-    add_link_flags_if(LIBCXX_SUPPORTS_${flagname}_FLAG ${flag})
-  endforeach()
-endmacro()
-
-# Add a list of libraries or link flags to 'LIBCXX_LIBRARIES'.
-macro(add_library_flags)
-  foreach(lib ${ARGN})
-    list(APPEND LIBCXX_LIBRARIES ${lib})
-  endforeach()
-endmacro()
-
-# if 'condition' is true then add the specified list of libraries and flags
-# to 'LIBCXX_LIBRARIES'.
-macro(add_library_flags_if condition)
-  if(${condition})
-    add_library_flags(${ARGN})
-  endif()
-endmacro()
-
-# Turn a comma separated CMake list into a space separated string.
-macro(split_list listname)
-  string(REPLACE ";" " " ${listname} "${${listname}}")
-endmacro()
diff --git a/libcxx/cmake/config-ix.cmake b/libcxx/cmake/config-ix.cmake
index ace7aca4b18..428d737c749 100644
--- a/libcxx/cmake/config-ix.cmake
+++ b/libcxx/cmake/config-ix.cmake
@@ -2,7 +2,23 @@ include(CheckLibraryExists)
 include(CheckCXXCompilerFlag)
 
 # Check compiler flags
-
+check_cxx_compiler_flag(-std=c++11              LIBCXX_HAS_STDCXX11_FLAG)
+check_cxx_compiler_flag(-std=c++1y              LIBCXX_HAS_STDCXX1Y_FLAG)
+check_cxx_compiler_flag(-fPIC                   LIBCXX_HAS_FPIC_FLAG)
+check_cxx_compiler_flag(-fno-omit-frame-pointer LIBCXX_HAS_FNO_OMIT_FRAME_POINTER_FLAG)
+check_cxx_compiler_flag(-nodefaultlibs          LIBCXX_HAS_NODEFAULTLIBS_FLAG)
+check_cxx_compiler_flag(-nostdinc++             LIBCXX_HAS_NOSTDINCXX_FLAG)
+check_cxx_compiler_flag(-Wall                   LIBCXX_HAS_WALL_FLAG)
+check_cxx_compiler_flag(-W                      LIBCXX_HAS_W_FLAG)
+check_cxx_compiler_flag(-Wno-unused-parameter   LIBCXX_HAS_WNO_UNUSED_PARAMETER_FLAG)
+check_cxx_compiler_flag(-Wwrite-strings         LIBCXX_HAS_WWRITE_STRINGS_FLAG)
+check_cxx_compiler_flag(-Wno-long-long          LIBCXX_HAS_WNO_LONG_LONG_FLAG)
+check_cxx_compiler_flag(-pedantic               LIBCXX_HAS_PEDANTIC_FLAG)
+check_cxx_compiler_flag(-Werror                 LIBCXX_HAS_WERROR_FLAG)
+check_cxx_compiler_flag(-Wno-error              LIBCXX_HAS_WNO_ERROR_FLAG)
+check_cxx_compiler_flag(-fno-exceptions         LIBCXX_HAS_FNO_EXCEPTIONS_FLAG)
+check_cxx_compiler_flag(-fno-rtti               LIBCXX_HAS_FNO_RTTI_FLAG)
+check_cxx_compiler_flag(-gline-tables-only      LIBCXX_HAS_GLINE_TABLES_ONLY_FLAG)
 check_cxx_compiler_flag(/WX                     LIBCXX_HAS_WX_FLAG)
 check_cxx_compiler_flag(/WX-                    LIBCXX_HAS_NO_WX_FLAG)
 check_cxx_compiler_flag(/EHsc                   LIBCXX_HAS_EHSC_FLAG)
@@ -10,7 +26,6 @@ check_cxx_compiler_flag(/EHs-                   LIBCXX_HAS_NO_EHS_FLAG)
 check_cxx_compiler_flag(/EHa-                   LIBCXX_HAS_NO_EHA_FLAG)
 check_cxx_compiler_flag(/GR-                    LIBCXX_HAS_NO_GR_FLAG)
 
-
 # Check libraries
 check_library_exists(pthread pthread_create "" LIBCXX_HAS_PTHREAD_LIB)
 check_library_exists(c printf "" LIBCXX_HAS_C_LIB)