- Add --with-sysroot=/ to CONFIGURE_ARGS. base/binutils needs this so
that ld honors --sysroot in linker scripts. base/gcc6 needs this so
that the C++ include paths honor --sysroot.
- Remove a hack from GCC's configure to force C++98 mode when building
GCC with GCC. libc++ assumes C++11, so this hack was breaking the
build of base/gcc6 natively when the system compiler was GCC.
- Add toolchain makefiles installed to /usr/share/toolchains.
These are suitable to be used by CROSS_TOOLCHAIN when doing a native
arch build. These makefiles enable appropriate knobs so that the
in-tree components that are replaced by each package are not built
or installed. The freebsd-gcc toolchain makefile includes the
binutils toolchain makefile if it is present.
Reviewed by: bapt
Differential Revision: https://reviews.freebsd.org/D22984
d7993e8946