Question

I started to use Xcode 4.2 and i have problems with generating code coverage.

Xcode 4.2 does not include the GCC 4.2 compiler, but it was replaced with the LLVM GCC 4.2 compiler.
The first one was needed to generate code coverage in the previous version of Xcode.

I followed the ‘tutorial’ on CoverStory website, but this results in the following:

a) when i do all steps, no coverage files.
b) when i link the libprofile_rt.dylib to my project, the test which should fail, do not fail anymore.

Did anyone encounter this issue? And how did you solve it?

Thanks

Answer 1

Here is a way to enable compiling with gcc 4.2 in xcode 4.2. This is mostly done via command line so when you see lines starting with: [ 15:30 jon@MacBookPro / ]$, you need to open up Terminal.app and run the command that starts after the $.

No files or directories are removed or deleted in this process, so it is easy to undo if you need to compile with LLVM in the future.

1. Download – but do not install yet – xcode_4.1_for_lion.dmg or xcode_4.1_for_snow_leopard.dmg

2. Now, follow these steps to install Xcode 4.1 into /Developer-4.1:

   1. Backup the working /Developer directory (where Xcode 4.2 is installed)

   [ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer /Developer-4.2
   

3. Run the Xcode 4.1 installer using the default install location (/Developer)

4. Move the new Xcode 4.1 installation to /Developer-4.1:

   [ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer /Developer-4.1
   

5. Move the Xcode 4.2 developer directory back to /Developer:

   [ 15:30 jon@MacBookPro / ]$ sudo mv -v /Developer-4.2 /Developer