gcc-with-cpychecker does not use CC to find gcc, in order to avoid forkbombing
when setting CC=gcc-with-cpychecker, and instead uses a hardcoded 'gcc'. This
means that when we want to use a specific gcc, we either needs to edit
gcc-with-cpychecker to adjust the filename, or use PATH settings to pick up
gcc (which may mean having to map somehow f.i. 'gcc-7' to 'gcc').
Add handling of CC_FOR_CPYCHECKER in gcc-with-cpychecker, to be able to easily
specify the gcc to be used.
gcc-with-cpychecker does not use CC to find gcc, in order to avoid forkbombing when setting CC=gcc-with-cpychecker, and instead uses a hardcoded 'gcc'. This means that when we want to use a specific gcc, we either needs to edit gcc-with-cpychecker to adjust the filename, or use PATH settings to pick up gcc (which may mean having to map somehow f.i. 'gcc-7' to 'gcc').
Add handling of CC_FOR_CPYCHECKER in gcc-with-cpychecker, to be able to easily specify the gcc to be used.