On Mon, 6 Nov 2017 10:30:14 -0800 Max Filippov <jcmvb...@gmail.com> wrote:
> Hello, > > I'm trying to build a canadian cross compiler with build == > x86_64-linux, host == xtensa-linux and target == xtensa-linux. I need > to specify an xtensa-specific flag in CFLAGS that will be applied to > the host binary. > > I put this flag into CFLAGS and CXXFLAGS. The first question: is that > the right place for it? > > The build process tries to build libcpp for the build system and it > runs x86_64 gcc with that xtensa-specific option. That's where the > build breaks for me, because the option is not recognized by the > build gcc. Is it supposed to work? > > If CFLAGS/CXXFLAGS is the right place for the option, how can the > build tell whether it's intended for the build or for the host? GCC has $CFLAGS_FOR_BUILD and $CFLAGS_FOR_TARGET.
