How do I find out why g++ takes a very long time on a particular file?

Question

I am building a lot of auto-generated code, including one particularly large file (~15K lines), using a mingw32 cross compiler on linux. Most files are extremely quick, but thi

Answer 1

Another process to try is to add "progress marker" pragmas to your code to trap the portion of the code that is taking a long time. The Visual Studio compiler provides #pragma message(), although there is not a standard pragma for doing this.

Put one marker at the beginning of the code and a marker at the end of the code. The end marker could be a #error since you don't care about the remainder of the source file. Move the markers accordingly to trap the section of code taking the longest time.

Just a thought...