Project import generated by Copybara.

GitOrigin-RevId: 318483224ad6164d9966f731d60cde37039bb2d4

3 files changed, 333 insertions, 0 deletions

diff --git a/CMake/AddCXXCompilerFlag.cmake b/CMake/AddCXXCompilerFlag.cmake
new file mode 100644
index 000000000..b57fa4dd9
--- /dev/null
+++ b/CMake/AddCXXCompilerFlag.cmake
@@ -0,0 +1,74 @@
+# - Adds a compiler flag if it is supported by the compiler
+#
+# This function checks that the supplied compiler flag is supported and then
+# adds it to the corresponding compiler flags
+#
+#  add_cxx_compiler_flag(<FLAG> [<VARIANT>])
+#
+# - Example
+#
+# include(AddCXXCompilerFlag)
+# add_cxx_compiler_flag(-Wall)
+# add_cxx_compiler_flag(-no-strict-aliasing RELEASE)
+# Requires CMake 2.6+
+
+if(__add_cxx_compiler_flag)
+  return()
+endif()
+set(__add_cxx_compiler_flag INCLUDED)
+
+include(CheckCXXCompilerFlag)
+
+function(mangle_compiler_flag FLAG OUTPUT)
+  string(TOUPPER "HAVE_CXX_FLAG_${FLAG}" SANITIZED_FLAG)
+  string(REPLACE "+" "X" SANITIZED_FLAG ${SANITIZED_FLAG})
+  string(REGEX REPLACE "[^A-Za-z_0-9]" "_" SANITIZED_FLAG ${SANITIZED_FLAG})
+  string(REGEX REPLACE "_+" "_" SANITIZED_FLAG ${SANITIZED_FLAG})
+  set(${OUTPUT} "${SANITIZED_FLAG}" PARENT_SCOPE)
+endfunction(mangle_compiler_flag)
+
+function(add_cxx_compiler_flag FLAG)
+  string(REPLACE "-Wno-" "-W" MAIN_FLAG ${FLAG})
+  mangle_compiler_flag("${MAIN_FLAG}" MANGLED_FLAG)
+  if (DEFINED CMAKE_REQUIRED_FLAGS)
+    set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
+  else()
+    set(CMAKE_REQUIRED_FLAGS "${FLAG}")
+  endif()
+  check_cxx_compiler_flag("${MAIN_FLAG}" ${MANGLED_FLAG})
+  if (DEFINED OLD_CMAKE_REQUIRED_FLAGS)
+    set(CMAKE_REQUIRED_FLAGS "${OLD_CMAKE_REQUIRED_FLAGS}")
+  else()
+    unset(CMAKE_REQUIRED_FLAGS)
+  endif()
+  if(${MANGLED_FLAG})
+    set(VARIANT ${ARGV1})
+    if(ARGV1)
+      string(TOUPPER "_${VARIANT}" VARIANT)
+    endif()
+    set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
+  endif()
+endfunction()
+
+function(add_required_cxx_compiler_flag FLAG)
+  string(REPLACE "-Wno-" "-W" MAIN_FLAG ${FLAG})
+  mangle_compiler_flag("${MAIN_FLAG}" MANGLED_FLAG)
+  set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
+  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
+  check_cxx_compiler_flag("${MAIN_FLAG}" ${MANGLED_FLAG})
+  set(CMAKE_REQUIRED_FLAGS "${OLD_CMAKE_REQUIRED_FLAGS}")
+  if (${MANGLED_FLAG})
+    set(VARIANT ${ARGV1})
+    if (ARGV1)
+      string(TOUPPER "_${VARIANT}" VARIANT)
+    endif()
+    set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
+    set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}" PARENT_SCOPE)
+  else()
+    message(FATAL_ERROR "Required flag '${FLAG}' is not supported by the compiler")
+  endif()
+endfunction()
diff --git a/CMake/FindReadline.cmake b/CMake/FindReadline.cmake
new file mode 100644
index 000000000..74bf8b6c5
--- /dev/null
+++ b/CMake/FindReadline.cmake
@@ -0,0 +1,29 @@
+# from http://websvn.kde.org/trunk/KDE/kdeedu/cmake/modules/FindReadline.cmake
+# http://websvn.kde.org/trunk/KDE/kdeedu/cmake/modules/COPYING-CMAKE-SCRIPTS
+# --> BSD licensed
+#
+# GNU Readline library finder
+if(READLINE_INCLUDE_DIR AND READLINE_LIBRARY)
+  set(READLINE_FOUND TRUE)
+else(READLINE_INCLUDE_DIR AND READLINE_LIBRARY)
+  FIND_PATH(READLINE_INCLUDE_DIR readline/readline.h
+    /usr/include/readline
+    )
+
+  # 2008-04-22 The next clause used to read like this:
+  #
+  #  FIND_LIBRARY(READLINE_LIBRARY NAMES readline)
+  #        FIND_LIBRARY(NCURSES_LIBRARY NAMES ncurses )
+  #        include(FindPackageHandleStandardArgs)
+  #        FIND_PACKAGE_HANDLE_STANDARD_ARGS(Readline DEFAULT_MSG NCURSES_LIBRARY READLINE_INCLUDE_DIR READLINE_LIBRARY )
+  #
+  # I was advised to modify it such that it will find an ncurses library if
+  # required, but not if one was explicitly given, that is, it allows the
+  # default to be overridden. PH
+
+  FIND_LIBRARY(READLINE_LIBRARY NAMES readline)
+  include(FindPackageHandleStandardArgs)
+  FIND_PACKAGE_HANDLE_STANDARD_ARGS(Readline DEFAULT_MSG READLINE_INCLUDE_DIR READLINE_LIBRARY )
+
+  MARK_AS_ADVANCED(READLINE_INCLUDE_DIR READLINE_LIBRARY)
+endif(READLINE_INCLUDE_DIR AND READLINE_LIBRARY)
diff --git a/CMake/iOS.cmake b/CMake/iOS.cmake
new file mode 100644
index 000000000..7a365871d
--- /dev/null
+++ b/CMake/iOS.cmake
@@ -0,0 +1,230 @@
+# This file is based off of the Platform/Darwin.cmake and Platform/UnixPaths.cmake
+# files which are included with CMake 2.8.4
+# It has been altered for iOS development
+
+# Options:
+#
+# IOS_PLATFORM = OS (default) or SIMULATOR
+#   This decides if SDKS will be selected from the iPhoneOS.platform or iPhoneSimulator.platform folders
+#   OS - the default, used to build for iPhone and iPad physical devices, which have an arm arch.
+#   SIMULATOR - used to build for the Simulator platforms, which have an x86 arch.
+#
+# CMAKE_IOS_DEVELOPER_ROOT = automatic(default) or /path/to/platform/Developer folder
+#   By default this location is automatcially chosen based on the IOS_PLATFORM value above.
+#   If set manually, it will override the default location and force the user of a particular Developer Platform
+#
+# CMAKE_IOS_SDK_ROOT = automatic(default) or /path/to/platform/Developer/SDKs/SDK folder
+#   By default this location is automatcially chosen based on the CMAKE_IOS_DEVELOPER_ROOT value.
+#   In this case it will always be the most up-to-date SDK found in the CMAKE_IOS_DEVELOPER_ROOT path.
+#   If set manually, this will force the use of a specific SDK version
+
+# Macros:
+#
+# set_xcode_property (TARGET XCODE_PROPERTY XCODE_VALUE)
+#  A convenience macro for setting xcode specific properties on targets
+#  example: set_xcode_property (myioslib IPHONEOS_DEPLOYMENT_TARGET "3.1")
+#
+# find_host_package (PROGRAM ARGS)
+#  A macro used to find executable programs on the host system, not within the iOS environment.
+#  Thanks to the android-cmake project for providing the command
+
+# Standard settings
+set (CMAKE_SYSTEM_NAME Darwin)
+set (CMAKE_SYSTEM_VERSION 1)
+set (UNIX True)
+set (APPLE True)
+set (IOS True)
+
+# Required as of cmake 2.8.10
+set (CMAKE_OSX_DEPLOYMENT_TARGET "" CACHE STRING "Force unset of the deployment target for iOS" FORCE)
+
+# Determine the cmake host system version so we know where to find the iOS SDKs
+find_program (CMAKE_UNAME uname /bin /usr/bin /usr/local/bin)
+if (CMAKE_UNAME)
+    exec_program(uname ARGS -r OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION)
+    string (REGEX REPLACE "^([0-9]+)\\.([0-9]+).*$" "\\1" DARWIN_MAJOR_VERSION "${CMAKE_HOST_SYSTEM_VERSION}")
+endif (CMAKE_UNAME)
+
+# Force the compilers to gcc for iOS
+set (CMAKE_C_COMPILER /usr/bin/gcc)
+set (CMAKE_CXX_COMPILER /usr/bin/g++)
+set(CMAKE_AR ar CACHE FILEPATH "" FORCE)
+set(CMAKE_RANLIB ranlib CACHE FILEPATH "" FORCE)
+set(PKG_CONFIG_EXECUTABLE pkg-config CACHE FILEPATH "" FORCE)
+
+# Setup iOS platform unless specified manually with IOS_PLATFORM
+if (NOT DEFINED IOS_PLATFORM)
+    set (IOS_PLATFORM "OS")
+endif (NOT DEFINED IOS_PLATFORM)
+set (IOS_PLATFORM ${IOS_PLATFORM} CACHE STRING "Type of iOS Platform")
+
+# Check the platform selection and setup for developer root
+if (${IOS_PLATFORM} STREQUAL "OS")
+    set (IOS_PLATFORM_LOCATION "iPhoneOS.platform")
+    set (XCODE_IOS_PLATFORM iphoneos)
+
+    # This causes the installers to properly locate the output libraries
+    set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphoneos")
+
+    set (APPLE_IOS True)
+elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR")
+    set (SIMULATOR_FLAG true)
+    set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
+    set (XCODE_IOS_PLATFORM iphonesimulator)
+
+    # This causes the installers to properly locate the output libraries
+    set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
+
+    set (APPLE_IOS True)
+elseif (${IOS_PLATFORM} STREQUAL "WATCHOS")
+    set (IOS_PLATFORM_LOCATION "WatchOS.platform")
+    set (XCODE_IOS_PLATFORM watchos)
+
+    # This causes the installers to properly locate the output libraries
+    set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-watchos")
+
+    set (APPLE_WATCH True)
+elseif (${IOS_PLATFORM} STREQUAL "WATCHSIMULATOR")
+    set (SIMULATOR_FLAG true)
+    set (IOS_PLATFORM_LOCATION "WatchSimulator.platform")
+    set (XCODE_IOS_PLATFORM watchsimulator)
+
+    # This causes the installers to properly locate the output libraries
+    set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-watchsimulator")
+
+    set (APPLE_WATCH True)
+else (${IOS_PLATFORM} STREQUAL "OS")
+    message (FATAL_ERROR "Unsupported IOS_PLATFORM value selected. Please choose OS, SIMULATOR, or WATCHOS.")
+endif ()
+
+# All iOS/Darwin specific settings - some may be redundant
+set (CMAKE_SHARED_LIBRARY_PREFIX "lib")
+set (CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
+set (CMAKE_SHARED_MODULE_PREFIX "lib")
+set (CMAKE_SHARED_MODULE_SUFFIX ".so")
+set (CMAKE_MODULE_EXISTS 1)
+set (CMAKE_DL_LIBS "")
+
+set (CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
+set (CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
+set (CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
+set (CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
+
+if (IOS_DEPLOYMENT_TARGET)
+    set (XCODE_IOS_PLATFORM_VERSION_FLAGS "-m${XCODE_IOS_PLATFORM}-version-min=${IOS_DEPLOYMENT_TARGET}")
+endif()
+
+set (CMAKE_SHARED_LINKER_FLAGS_INIT "-fapplication-extension")
+if (NOT SIMULATOR_FLAG)
+    set (BITCODE "-fembed-bitcode")
+endif()
+set (CMAKE_C_FLAGS_INIT "${XCODE_IOS_PLATFORM_VERSION_FLAGS} ${BITCODE}")
+# Hidden visibilty is required for cxx on iOS
+set (CMAKE_CXX_FLAGS_INIT "${XCODE_IOS_PLATFORM_VERSION_FLAGS} ${BITCODE} -fvisibility-inlines-hidden")
+
+set (CMAKE_C_LINK_FLAGS   "${XCODE_IOS_PLATFORM_VERSION_FLAGS} -fapplication-extension -Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
+set (CMAKE_CXX_LINK_FLAGS "${XCODE_IOS_PLATFORM_VERSION_FLAGS} -fapplication-extension -Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
+
+set (CMAKE_PLATFORM_HAS_INSTALLNAME 1)
+set (CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -headerpad_max_install_names")
+set (CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -headerpad_max_install_names")
+set (CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
+set (CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
+set (CMAKE_FIND_LIBRARY_SUFFIXES ".dylib" ".so" ".a")
+
+# hack: if a new cmake (which uses CMAKE_INSTALL_NAME_TOOL) runs on an old build tree
+# (where install_name_tool was hardcoded) and where CMAKE_INSTALL_NAME_TOOL isn't in the cache
+# and still cmake didn't fail in CMakeFindBinUtils.cmake (because it isn't rerun)
+# hardcode CMAKE_INSTALL_NAME_TOOL here to install_name_tool, so it behaves as it did before, Alex
+if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
+    find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
+endif (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
+
+# Setup iOS deployment target
+set (IOS_DEPLOYMENT_TARGET ${IOS_DEPLOYMENT_TARGET} CACHE STRING "Minimum iOS version")
+
+# Setup iOS developer location unless specified manually with CMAKE_IOS_DEVELOPER_ROOT
+# Note Xcode 4.3 changed the installation location, choose the most recent one available
+exec_program(/usr/bin/xcode-select ARGS -print-path OUTPUT_VARIABLE CMAKE_XCODE_DEVELOPER_DIR)
+set (XCODE_POST_43_ROOT "${CMAKE_XCODE_DEVELOPER_DIR}/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
+set (XCODE_PRE_43_ROOT "/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
+if (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
+    if (EXISTS ${XCODE_POST_43_ROOT})
+        set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_POST_43_ROOT})
+    elseif(EXISTS ${XCODE_PRE_43_ROOT})
+        set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_PRE_43_ROOT})
+    endif (EXISTS ${XCODE_POST_43_ROOT})
+endif (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
+set (CMAKE_IOS_DEVELOPER_ROOT ${CMAKE_IOS_DEVELOPER_ROOT} CACHE PATH "Location of iOS Platform")
+
+# Find and use the most recent iOS sdk unless specified manually with CMAKE_IOS_SDK_ROOT
+if (NOT DEFINED CMAKE_IOS_SDK_ROOT)
+    file (GLOB _CMAKE_IOS_SDKS "${CMAKE_IOS_DEVELOPER_ROOT}/SDKs/*")
+    if (_CMAKE_IOS_SDKS)
+        list (SORT _CMAKE_IOS_SDKS)
+        list (REVERSE _CMAKE_IOS_SDKS)
+        list (GET _CMAKE_IOS_SDKS 0 CMAKE_IOS_SDK_ROOT)
+    else (_CMAKE_IOS_SDKS)
+        message (FATAL_ERROR "No iOS SDK's found in default search path ${CMAKE_IOS_DEVELOPER_ROOT}. Manually set CMAKE_IOS_SDK_ROOT or install the iOS SDK.")
+    endif (_CMAKE_IOS_SDKS)
+    message (STATUS "Toolchain using default iOS SDK: ${CMAKE_IOS_SDK_ROOT}")
+endif (NOT DEFINED CMAKE_IOS_SDK_ROOT)
+set (CMAKE_IOS_SDK_ROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Location of the selected iOS SDK")
+
+# Set the sysroot default to the most recent SDK
+set (CMAKE_OSX_SYSROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Sysroot used for iOS support")
+
+# set the architecture for iOS
+if (IOS_PLATFORM STREQUAL "OS")
+    set (IOS_ARCH "armv7;armv7s;arm64")
+    set (IOS_ARCH "armv7;arm64")
+elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
+    set (IOS_ARCH "i386;x86_64")
+elseif (IOS_PLATFORM STREQUAL "WATCHOS")
+    set (IOS_ARCH "armv7k")
+elseif (IOS_PLATFORM STREQUAL "WATCHSIMULATOR")
+    set (IOS_ARCH "i386")
+else()
+    message (WARNING "Unknown IOS_PLATFORM=<${IOS_PLATFORM}>")
+endif()
+message (STATUS ${IOS_ARCH})
+
+set (CMAKE_OSX_ARCHITECTURES ${IOS_ARCH} CACHE string  "Build architecture for iOS")
+
+# Set the find root to the iOS developer roots and to user defined paths
+set (CMAKE_FIND_ROOT_PATH ${CMAKE_IOS_DEVELOPER_ROOT} ${CMAKE_IOS_SDK_ROOT} ${CMAKE_PREFIX_PATH} CACHE string  "iOS find search path root")
+
+# default to searching for frameworks first
+set (CMAKE_FIND_FRAMEWORK FIRST)
+
+# set up the default search directories for frameworks
+set (CMAKE_SYSTEM_FRAMEWORK_PATH
+    ${CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks
+    ${CMAKE_IOS_SDK_ROOT}/System/Library/PrivateFrameworks
+    ${CMAKE_IOS_SDK_ROOT}/Developer/Library/Frameworks
+)
+
+# only search the iOS sdks, not the remainder of the host filesystem
+set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
+set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+
+# This little macro lets you set any XCode specific property
+macro (set_xcode_property TARGET XCODE_PROPERTY XCODE_VALUE)
+    set_property (TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY} ${XCODE_VALUE})
+endmacro (set_xcode_property)
+
+# This macro lets you find executable programs on the host system
+macro (find_host_package)
+    set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+    set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
+    set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
+    set (IOS FALSE)
+
+    find_package(${ARGN})
+
+    set (IOS TRUE)
+    set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
+    set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+    set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endmacro (find_host_package)