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g++ sometimes produces pretty convoluted outputs. Specially when dealing with templates. Is there any tool that makes g++ output more readable? … at least some color?
It may sound silly to ask this question here, but I’ve been unable to google my way out of this.
If you’re free to switch compiler, try clang++. It’s error outputs are most of the time very clear and sometimes it will even tell you what to do to fix your error. You can find a comparison of gcc vs clang error output here: http://clang.llvm.org/diagnostics.html.
Otherwise, as noted by Matteo Italia, look to STLFilt.
For the color aspect, Edwin Buck’s solution (colorgcc) is very good. You can create symlinks to it named gcc, g++, etc so that it always gets used whenever you run a compiler command (provided you setup the paths in the colorgcc script correctly). I find this especially convenient when compiling some large project from a Makefile. Helps tremendously to detect where exactly something went wrong (especially when you do parallel compilations with
make -j).