[Bug other/82708] libmpx fails to compile due to PATH_MAX

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82708

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The expectation for bootstrapping such a cross toolchain is that GCC is 
configured and built twice.  The first build is static-only, C-only, 
inhibit-libc, disables lots of libraries such as libmpx.  That is used to 
build and install glibc.  The second build of GCC, configured with glibc 
present, is fully functional with all required languages.  See what 
glibc's build-many-glibcs.py script does for details of the modern 
approach for bootstrapping cross toolchains with glibc.