> In that case I say go with a script. Rename Jamrules to Jamrules.in > and have > the variables as @GCC_PATH@ and let it be substituted into a new file > called > Jamrules. I'm all for it, save that would leave the Jamrules file untouched and rather let it include a file BuildConfig generated from BuildConfig.in. That allows one to modify Jamrules without the need to re-configure each time. CU, Ingo