On Fri, Aug 25, 2023 at 4:16 PM Michael Welsh Duggan via Gcc < gcc@gcc.gnu.org> wrote:
> I am attempting to debug an issue in gcc (PR 110827, if curious). In > order to do this I have built a stage 1 compiler with debugging and > without optimization as discussed here: > > https://gcc.gnu.org/wiki/DebuggingGCC#Building_a_Debuggable_Compiler > > I would like run the compiler from its build location without installing > it, but I cannot determine how to have gcc look for its include files > and libraries from within its source and build trees. My first problem > was that it looked for for cc1plus in the wrong location; my next > problems involved include paths. > > Is it possible to do this without extensive command-line options, or > does this need to be installed? If the latter, what target do I use to > install the unoptimized stage 1 compiler? > One can use $ ./xgcc -B./ to run GCC in the build directory, or wherever the driver and compiler are installed. To debug the compiler, it is easier to produce a preprocessed file with the header files included (-E command line option) and direct the compiler, e.g, cc1 or cc1plus, to use the preprocessed file as input. David
