I still have no idea where or how you got the source code you are compiling.
But, I will try building the "CodeBlocks_wx30.cbp" project; I saw no problem building the wx2.8 project.
Edit: I saw no problem compiling the "CodeBlocks_wx30.cbp" project. So, I am guessing the problem has already been fixed or does NOT exist. Please give the more details on the source code you are compiling!
Where and how did you get it?
Edit2: All my testing is on SVN Revision: 10895.
My Git log shows the src\exchndl\win32\lib\libexchndl.a was last changed on 2016-06-10 by mortenmacfly.
* updated exchndl (crash handler) DLL to v0.8.0
git-svn-id: https://svn.code.sf.net/p/codeblocks/code/trunk@10866 2a5c6006-c6dd-42ca-98ab-0921f2732cef
Tim S.