I went back into the 4-14 nightly to try it again, and I indeed hadn't noticed this earlier because as of that revision, it didn't display the command line for each source file that was compiling in the build log tab. It would just say:
Compiling: file1
Compiling: file2
...
I didn't really that it would append the global/project options that way, so I've removed the redundant -g -Wall options from my project. I did notice that there seems to be an option to change the compiler logging options to go back to summary "compiling: filename" logging, and I'll probably give that a shot. Thank you for your help.
I did mention this a while ago regarding the April 14 nightly, but when building a project, Codeblocks doesn't seem to compile the source files by alphabetical order anymore. I did prefer that, because it was an easy way to tell how far the build process was without having to enable a status bar (which I see is an option). Is there a way to make it build files in alphabetical order once again?