我正在尝试使用ios-cmake生成针对 iOS 的 Xcode 项目。但是,它找不到线程。这是一个用于演示的简单 CMake 脚本:
CMAKE_MINIMUM_REQUIRED (VERSION 2.8)
PROJECT (MyCITest)
SET (CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules")
########################
# EDIT: I've also tried adding the lines below prior to posting this question,
# but there doesn't seem to be any effect.
# (http://stackoverflow.com/questions/8386897)
SET (CMAKE_REQUIRED_INCLUDES ${CMAKE_IOS_SDK_ROOT}/usr ${CMAKE_IOS_SDK_ROOT}/usr/include)
SET (CMAKE_CXX_FLAGS "--sysroot=${CMAKE_IOS_SDK_ROOT} ${CMAKE_CXX_FLAGS}")
SET (CMAKE_C_FLAGS "--sysroot=${CMAKE_IOS_SDK_ROOT} ${CMAKE_C_FLAGS}")
########################
FIND_PACKAGE (ZLIB REQUIRED)
FIND_PACKAGE (LibXml2 REQUIRED)
FIND_PACKAGE (Threads REQUIRED)
从终端运行 CMake:
cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/iOS.cmake -GXcode
这是我得到的输出:
-- Toolchain using default iOS SDK: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk
-- Found ZLIB: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/lib/libz.dylib (found version "1.2.5")
-- Found LibXml2: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/lib/libxml2.dylib (found version "2.7.8")
-- Looking for include file pthread.h
-- Looking for include file pthread.h - not found
CMake Error at cmake/modules/FindPackageHandleStandardArgs.cmake:97 (MESSAGE):
Could NOT find Threads (missing: Threads_FOUND)
Call Stack (most recent call first):
cmake/modules/FindPackageHandleStandardArgs.cmake:288 (_FPHSA_FAILURE_MESSAGE)
cmake/modules/FindThreads.cmake:166 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
CMakeLists.txt:8 (FIND_PACKAGE)
-- Configuring incomplete, errors occurred!
我已经三重检查了 pthread.h 位于 中/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/include
,此外,它位于 ZLib 和 LibXML2 没有问题,所以我不确定我做错了什么。
> cmake --version
cmake version 2.8.10.2