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我想在iOS 6.1，Xcode 4.6.3和Mac OS X 10.7.5的机器上编译opencv 2.4.6.0。我一直在按照opencv website上的安装说明来安装opencv ios框架。在opencv ios中检测C＆CXX编译器错误
`python opencv/platforms/ios/build_framework.py ios`
我试图通过运行在python脚本的终端窗口中分别给出CMake的命令来缩小的编制问题的原因：但是我在运行脚本同时获得几个编译错误。所以，如果我跑：
cmake -GXcode -DCMAKE_TOOLCHAIN_FILE=../ios/cmake/Toolchains/Toolchain-iPhoneSimulator_Xcode.cmake -DOPENCV_BUILD_3RDPARTY_LIBS=YES -DCMAKE_XCODE_ATTRIBUTE_GCC_VERSION="com.apple.compilers.llvmgcc42" ../
则无法检测到C和CXX编译器的信息和大部分测试都失败了，如下图所示的系统：
-- Setting up iPhoneSimulator toolchain
-- iPhoneSimulator toolchain loaded
-- Setting up iPhoneSimulator toolchain
-- iPhoneSimulator toolchain loaded
-- The CXX compiler identification is Clang 4.2.0
-- The C compiler identification is Clang 4.2.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Performing Test HAVE_CXX_FSIGNED_CHAR
-- Performing Test HAVE_CXX_FSIGNED_CHAR - Failed
-- Performing Test HAVE_C_FSIGNED_CHAR
-- Performing Test HAVE_C_FSIGNED_CHAR - Failed
但是，如果我运行相同cmake的命令，而不指定-DCMAKE_TOOLCHAIN_FILE然后我不明白CXX和C编译器错误，如下图所示：
cmake -GXcode -DOPENCV_BUILD_3RDPARTY_LIBS=YES -DCMAKE_XCODE_ATTRIBUTE_GCC_VERSION="com.apple.compilers.llvmgcc42" ../
-- The CXX compiler identification is Clang 4.2.0
-- The C compiler identification is Clang 4.2.0
-- Check for working CXX compiler using: Xcode
-- Check for working CXX compiler using: Xcode -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working C compiler using: Xcode
-- Check for working C compiler using: Xcode -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Performing Test HAVE_CXX_FSIGNED_CHAR
-- Performing Test HAVE_CXX_FSIGNED_CHAR - Success
-- Performing Test HAVE_C_FSIGNED_CHAR
我明白，这个错误不是因为OpenCV的，但我想知道是否有人也面临安装opencv时出现类似的问题。
谢谢你的时间。 Shakir
同样的问题。看起来像系统有问题（env vars），但我无法弄清楚什么是错的 – Flop