https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65028
--- Comment #21 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Martin Jambor from comment #19) > HJ, how do I configure build an x32 gcc? I have working x32 debian > chroot environment but building gcc fails with: I suggest you use Ubuntu 14.04 or newer. > checking for int64_t underlying type... long long > configure: error: error verifying int64_t uses long long > Makefile:4053: recipe for target 'configure-gcc' failed What does gcc/config.log say? > is there a howto somewhere? Thanks. You just need to install gcc x32 as well as libc x32 packages.
