Duplicate symbol from single library in iOS4.1 SDK?

When you have a web of projects that compile to static libraries and refer to one another, there are 2 distinct concerns you must consider: A project's Direct Dependencies inform Xcode which projects depend on each other so it knows to recompile a project when its dependencies change A project's Linked Libaries actually get included in its object code In a nutshell, your web of direct dependencies can be as tangled as you want, but you must be careful to link each project's code into the application executable only once Basically, my problem was that I had 3 projects A, B, and C, and the dependencies looked like A=>B, A=>C, B=>C. I was linking libC. A into both A and B, so the linker complained about duplicate code The configuration stuff you need to change is on the Target Info page for each of your projects' targets.

When you have a web of projects that compile to static libraries and refer to one another, there are 2 distinct concerns you must consider: A project's Direct Dependencies inform Xcode which projects depend on each other so it knows to recompile a project when its dependencies change. A project's Linked Libaries actually get included in its object code. In a nutshell, your web of direct dependencies can be as tangled as you want, but you must be careful to link each project's code into the application executable only once.

Basically, my problem was that I had 3 projects A, B, and C, and the dependencies looked like A=>B, A=>C, B=>C. I was linking libC. A into both A and B, so the linker complained about duplicate code.

The configuration stuff you need to change is on the Target Info page for each of your projects' targets.

This happened to me when I used the -all_load linker flag, which forces the linker to load all symbols from all libraries. The Three20 project says you should use it, because otherwise the Categories won't be loaded and you get a runtime exception. I removed that flag, and added the -force_load flag just for each library that needed it (the Three20 libraries).

See also: What does the -all_load linker flag do?

I've several apps that need to embed a small custom library that makes use of ASI and TBXML. Some of this apps have their own version of that libraries. In order to avoid duplicate symbol issue, I duplicated the each library's target removing the .

M files that causes the issue. Hope it helps.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.