Ian Lance Taylor wrote: > > > So my question is : What configure option I have to set up for > > gcc in order to get newlib being cross-compiled to big endian code ? > > > > Has someone succeeded in doing that (with or without multilib > > support) ? > > I don't think there is any way to do that without patching the source. > > It's easy to patch the source to make -mbig-endian the default: change > the definition of TARGET_DEFAULT to include ARM_FLAG_BIG_END. > TARGET_DEFAULT is defined in config/arm/*.h; the exact definition > depends upon your target. > > It is only slightly more work to add support for --with-endian to > config.gcc. My goal is not to get -mbig-endian being the default. I just want that whenever I link a big endian object file the proper big endian version of newlib be coosen by gcc instead of the little endian default one. I tried the trick suggested some time ago by Michael Butts in http://sources.redhat.com/ml/newlib/2001/msg00561.html, i.e. changing the setting of the MULTILIB_OPTIONS and MULTILIB_DIRNAMES variables in gcc/Makefile, right after the configure stage. The resulting build behaves as I expected. The command arm-elf-gcc -print-multi-lib prints then: .; thumb;@mthumb be;@mbig-endian thumb/be;@mthumb@mbig-endian Pierre -- Pierre HABRAKEN - mailto:Pierre.Habraken@xxxxxxx Tél: 04 76 82 72 83 - Fax: 04 76 82 72 87 IMAG-LSR BP72 38402 SAINT MARTIN D'HERES Cedex
