为IOS生成opencv framework时遇到的2个问题

cmake版本：2.8.12

XCode版本：5.0.2

IOS版本生成方法参照：http://docs.opencv.org/trunk/doc/tutorials/introduction/ios_install/ios_install.html#ios-installation

首先是link错误：

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/ant/xcode/opencv/ios/build/iPhoneOS-armv7/3rdparty/libjpeg/OpenCV.build/Release-iphoneos/libjpeg.build/Objects-normal/armv7/jmemansi.o

解决方案：

modules/world/CMakeLists.txt:84

 1 macro(ios_include_3party_libs)
 2   foreach(l ${ARGN})
 3     add_dependencies(${the_module} ${l})
 4     string(REGEX REPLACE "<MODULE_NAME>" "${l}" objpath1 "${CMAKE_BINARY_DIR}/3rdparty/${l}/${objpath0}")
 5     file(GLOB sources ${CMAKE_SOURCE_DIR}/3rdparty/${l}/*.c)
 6     foreach(srcname ${sources})
 7       if(IS_ABSOLUTE "${srcname}")
 8         file(RELATIVE_PATH srcname "${CMAKE_SOURCE_DIR}/3rdparty/${l}" "${srcname}")
 9       endif()
10 
11       string(REPLACE ".." "__" srcname "${srcname}")
12       get_filename_component(srcname_we ${srcname} NAME_WE)
13       string(REGEX REPLACE <SRC_NAME_WE> "${srcname_we}" objpath2 "${objpath1}")
14       string(REGEX REPLACE <RELATIVE_SRC_NAME> "${srcname}" objpath3 "${objpath2}")
15 
16       list(APPEND objlist ""${objpath3}"")
17     endforeach() # (srcname ${sources})
18   endforeach()
19   ocv_list_filterout(objlist jmemansi) # <<= dirty fix
20 endmacro()

之后编译模拟器用的类库时候遇到个C99编译问题 "implicit declaration of function 'close' is invalid in C99"
解决方案：在platforms/ios/build_framework.py中 添加-DCMAKE_C_FLAGS="-Wno-implicit-function-declaration"

1 cmakeargs = ("-GXcode " +
2             "-DCMAKE_BUILD_TYPE=Release " +
3             "-DCMAKE_C_FLAGS="-Wno-implicit-function-declaration" " +
4             "-DCMAKE_TOOLCHAIN_FILE=%s/platforms/ios/cmake/Toolchains/Toolchain-%s_Xcode.cmake " +
5             "-DBUILD_opencv_world=ON " +
6             "-DCMAKE_INSTALL_PREFIX=install") % (srcroot, target)

记录之~~~~