iPhone - Why can the compiler not find some includes when building for ARM architecture?

Question

I am trying to make use of a C library in an iPhone project. I am very green with iPhone development. My Library

I have been battling for days now to try and get th

Answer 1

I've had some success adding the following to my .bash_profile:

# OS SDK PATHS
IPHONE_SDK=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
IPHONESIM_SDK=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk
MACOSX_SDK=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk

export IPHONE_SDK
export IPHONESIM_SDK
export MACOS_SDK

C_INCLUDE_PATH=$HOME/local/include:$IPHONE_SDK/usr/include:$IPHONESIM_SDK/usr/include
CPLUS_INCLUDE_PATH=$C_INCLUDE_PATH

export C_INCLUDE_PATH
export CPLUS_INCLUDE_PATH

This gives adds all of the architecture-dependent header files to your include folder. After that, I was able to compile C++ libraries without any other modifications.