#436 Building iOS doesn’t seem to work (#776)

This moves iOS.cmake into the file so there is on need to add it. Also allows for boost to be static libs versus framework

Build_iOS/CMakeLists.txt

@@ -3,7 +3,11 @@ cmake_minimum_required(VERSION 2.6)
 
 enable_testing()
 
-set(TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/ios-cmake/toolchain/iOS.cmake")
+if (CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET)
+  set (ENV{CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET} ${CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET})
+endif()
+
+set(TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/iOS.cmake")
 
 set(SIM_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/build.i386" CACHE INTERNAL "")
 set(SIM_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../Release" CACHE INTERNAL "")

Build_iOS/iOS.cmake

@@ -0,0 +1,225 @@
+# 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 or SIMULATOR64
+#   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)
+
+# Allow external setting of CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET. This is clumsy
+# but it provides flexibility of not having to hardcode the deployment version in the file or have
+# numerous copies of the file
+if ($ENV{CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET}) 
+	set(CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET $ENV{CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET})
+endif ($ENV{CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET})
+
+# 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)
+
+# Use clang. Use xcrun to determine the location
+EXEC_PROGRAM(xcrun ARGS -find clang OUTPUT_VARIABLE APPLE_CLANG)
+EXEC_PROGRAM(xcrun ARGS -find clang++ OUTPUT_VARIABLE APPLE_CLANGPP)
+set (CMAKE_C_COMPILER ${APPLE_CLANG})
+set (CMAKE_CXX_COMPILER ${APPLE_CLANGPP})
+
+set (CMAKE_AR ar CACHE FILEPATH "" FORCE)
+
+set (CMAKE_THREAD_LIBS_INIT "-lpthread")
+set (CMAKE_HAVE_THREADS_LIBRARY 1)
+set (CMAKE_USE_WIN32_THREADS_INIT 0)
+set (CMAKE_USE_PTHREADS_INIT 1)
+
+# Skip the platform compiler checks for cross compiling
+set (CMAKE_CXX_COMPILER_WORKS TRUE)
+set (CMAKE_C_COMPILER_WORKS TRUE)
+
+# All iOS/Darwin specific settings - some may be redundant
+set (CMAKE_SHARED_LIBRARY_PREFIX "lib")
+set (CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
+set (CMAKE_SHARED_MODULE_PREFIX "lib")
+set (CMAKE_SHARED_MODULE_SUFFIX ".so")
+set (CMAKE_MODULE_EXISTS 1)
+set (CMAKE_DL_LIBS "")
+
+set (CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
+set (CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
+set (CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
+set (CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
+
+# Hidden visibilty is required for cxx on iOS 
+set (CMAKE_C_FLAGS_INIT "")
+set (CMAKE_CXX_FLAGS_INIT "-fvisibility=hidden")
+
+set (CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "" CACHE STRING "Force unset of CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN" FORCE)
+
+set (CMAKE_C_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
+set (CMAKE_CXX_LINK_FLAGS "-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")
+set (CMAKE_MACOSX_BUNDLE ON)
+set (CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED OFF)
+
+
+# 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 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")
+
+# Setup building for arm64 or not
+if (NOT DEFINED BUILD_ARM64)
+    set (BUILD_ARM64 true)
+endif (NOT DEFINED BUILD_ARM64)
+set (BUILD_ARM64 ${BUILD_ARM64} CACHE STRING "Build arm64 arch or not")
+
+# Check the platform selection and setup for developer root
+if (${IOS_PLATFORM} STREQUAL "OS")
+	set (IOS_PLATFORM_LOCATION "iPhoneOS.platform")
+
+	# This causes the installers to properly locate the output libraries
+	set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphoneos")
+elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR")
+	set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
+
+	# This causes the installers to properly locate the output libraries
+	set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
+elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR64")
+	set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
+
+	# This causes the installers to properly locate the output libraries
+	set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
+else (${IOS_PLATFORM} STREQUAL "OS")
+	message (FATAL_ERROR "Unsupported IOS_PLATFORM value selected. Please choose OS or SIMULATOR")
+endif (${IOS_PLATFORM} STREQUAL "OS")
+
+# 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)
+elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR")
+    set (IOS_ARCH i386)
+elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR64")
+    set (IOS_ARCH x86_64)
+endif (${IOS_PLATFORM} STREQUAL "OS")
+
+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)
+

Release/CMakeLists.txt

@@ -115,7 +115,7 @@ set(ANDROID_STL_FLAGS)
 # Platform (not compiler) specific settings
 if(IOS)
   # The cxx_flags must be reset here, because the ios-cmake toolchain file unfortunately sets "-headerpad_max_install_names" which is not a valid clang flag.
-  set(CMAKE_CXX_FLAGS "-fvisibility=hidden -fvisibility-inlines-hidden")
+  set(CMAKE_CXX_FLAGS "-fvisibility=hidden")
 elseif(ANDROID)
   if(ARM)
     set(LIBCXX_STL "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi-v7a/thumb/libgnustl_static.a")

Release/cmake/cpprest_find_boost.cmake

@@ -4,9 +4,15 @@ function(cpprest_find_boost)
   endif()
 
   if(IOS)
-    set(IOS_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../Build_iOS")
-    set(Boost_LIBRARIES "${IOS_SOURCE_DIR}/boost.framework/boost" CACHE INTERNAL "")
-    set(Boost_INCLUDE_DIR "${IOS_SOURCE_DIR}/boost.framework/Headers" CACHE INTERNAL "")
+    if (EXISTS "${PROJECT_SOURCE_DIR}/../Build_iOS/boost")
+      set(IOS_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../Build_iOS")
+      set(Boost_LIBRARIES "${IOS_SOURCE_DIR}/boost/lib" CACHE INTERNAL "")
+      set(Boost_INCLUDE_DIR "${IOS_SOURCE_DIR}/boost/include" CACHE INTERNAL "")
+    else()
+      set(IOS_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../Build_iOS")
+      set(Boost_LIBRARIES "${IOS_SOURCE_DIR}/boost.framework/boost" CACHE INTERNAL "")
+      set(Boost_INCLUDE_DIR "${IOS_SOURCE_DIR}/boost.framework/Headers" CACHE INTERNAL "")
+    endif()
   elseif(ANDROID)
     set(Boost_COMPILER "-clang")
     if(ARM)
@@ -42,8 +48,9 @@ function(cpprest_find_boost)
       endif()
       set(_prev "${_lib}")
     endforeach()
-    target_link_libraries(cpprestsdk_boost_internal INTERFACE "$<BUILD_INTERFACE:${_libs}>")
-
+    if (NOT IOS OR NOT EXISTS "${PROJECT_SOURCE_DIR}/../Build_iOS/boost")
+      target_link_libraries(cpprestsdk_boost_internal INTERFACE "$<BUILD_INTERFACE:${_libs}>")
+    endif()
   else()
     if(ANDROID)
       target_link_libraries(cpprestsdk_boost_internal INTERFACE

Release/src/http/client/http_client_asio.cpp

@@ -47,7 +47,7 @@
 #include <unordered_set>
 #include <memory>
 
-#if defined(__GNUC__)
+#if defined(__GNUC__) && !defined(__clang__)
 
 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
 #define AND_CAPTURE_MEMBER_FUNCTION_POINTERS