Hello Jonathan, On Tue, Mar 20, 2018 at 04:35:06PM +0000, Jonathan Wakely wrote: > > I'm trying to build gcc 7.3 on an x86 32 bit system with support for 32 > > and 64 bit binaries > > I don't know if that's even possible, other than by building a > cross-compiler with --target=x86_64-pc-linux-gnu. Maybe it is. It is possible - I have done it before with gcc 4.9.4. That's what the --enable-targets=all option is for. See https://gcc.gnu.org/install/configure.html > Have you tried the following the instructions at > https://gcc.gnu.org/wiki/InstallingGCC and using the > contrib/download_prerequisites script so that gmp/mpfr/mpc are built > as part of the build process? GCC should build them with whatever > architecture is needed. I will try - though configure only mentions the isl lib when I do that: configure: WARNING: using in-tree isl, disabling version check *** This configuration is not supported in the following subdirectories: target-libquadmath gnattools gotools target-libada target-libhsail-rt target-libgfortran target-libbacktrace target-libgo target-libffi target-libobjc target-liboffloadmic (Any other directories should still work fine.) I suspect the libs in /usr/lib may still be used. Anyway there should be nothing wrong with them. I expect this to fail and will send a mail to list should it turn out to work. cu, brunni -- ++ Michael Brunnbauer ++ netEstate GmbH ++ Geisenhausener Straße 11a ++ 81379 München ++ Tel +49 89 32 19 77 80 ++ Fax +49 89 32 19 77 89 ++ E-Mail brunni@xxxxxxxxxxxx ++ http://www.netestate.de/ ++ ++ Sitz: München, HRB Nr.142452 (Handelsregister B München) ++ USt-IdNr. DE221033342 ++ Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer ++ Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
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