On 2015.09.10 at 19:53 +0100, Jonathan Wakely wrote: > On 10 September 2015 at 17:23, Martin Sebor wrote: > > FWIW, I think the more common source of problems for those new > > to building GCC is not having all the right prerequisites. The > > GCC configure script tries to detect whether the right versions > > are available but does only a superficial job (checks their > > version macros) which can lead to cryptic build failures down > > the line when not all the right architectures are installed > > (e.g., the i686 in addition to x86_64). It also proceeds when > > MPC is not installed at all which then causes the build to fail. > > Not having the right prerequisites certainly used to be a common > problem (not quite as common as having them but installing them > outside ld.so's search dirs and then not setting LD_LIBRARY_PATH). > However, since I've been on a crusade to stop people doing that by > pointing them at https://gcc.gnu.org/wiki/InstallingGCC and telling > them to use contrib/download_prerequisites it is *much* less common > than it used to be. > > Markus, I think your patch wouldn't hurt, and might help people who > fail to read the instructions carefully, so I suggest sending it to > gcc-patches for review. I did that already and Jeff has approved the patch. Will commit it tomorrow. -- Markus
