Build options: Compiler for C/C++/Objective-C issue

Question

I am running opencv on iOS but some of the commands give linker error Undefined symbols for architecture i386. I am trying to change the Compiler for C/C++/Objective-C in build options of the xcode project but there is no option for clang. The only option is the selected one Default Compiler Apple LLVM 5.0. Does anyone know how to get through this?

This link might help http://stackoverflow.com/questions/15387596/compiling-opencv-2-4-on-a-64-bit-mac-in-xcode — chandu, Jan 23 '14 at 08:10

score 0 · Accepted Answer · answered Jan 23 '14 at 08:10

0

"Apple LLVM 5.0" is otherwise known as "clang", which is the C, C++ and Objective-C front-end for LLVM.

From the clang webpage:

The goal of the Clang project is to create a new C, C++, Objective C and Objective C++ front-end for the LLVM compiler. You can get and build the source today.

However changing the compiler won't affect your "undefined symbol" error, which is probably because you aren't linking against a "fat library" (an archive that contains multiple architectures for iOS Devices and the iOS Simulator).

answered Jan 23 '14 at 08:10

trojanfoe

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Try adding -lstdc++ or -lc++ flag in other linker flags. – chandu Jan 23 '14 at 08:14
@chandu No, you shouldn't need that at all. – trojanfoe Jan 23 '14 at 08:15
are you referencing any project or external framework? – Marcio Romero Patrnogic Jan 23 '14 at 22:51

Build options: Compiler for C/C++/Objective-C issue

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