On Mon, Apr 14, 2014 at 5:19 PM, Marc Glisse <marc.glisse@xxxxxxxx> wrote: > AFAIK they are requirements for the not-yet-released 4.9.0. Requirements > change for each release, you need to find some in the specific 4.4.0 > documentation. On Mon, Apr 14, 2014 at 7:34 PM, Chung-Ju Wu <jasonwucj@xxxxxxxxx> wrote: > The ISL is used after gcc-4.8. > > From the gcc-4.4.0 souce, gcc/doc/install.text, > the prerequisites are: > gmp 4.1 > mpfr 2.3.2 > ppl 0.10 > cloog-ppl 0.15 > > Also, if I remember correctly, the in-tree build of ppl and cloog-ppl > didn't work very well. So if your are forced to build gcc-4.4.0, either > dropping ppl/cloog-ppl or build them by your own with required version. Thanks guys, makes sense. So... I tried again with GMP 4.1.1 and MPFR 2.3.2 (dropped PPL and CLooG). Now it fails with this: In file included from /usr/include/features.h:385, from /usr/include/stdio.h:28, from ../../../../gcc-4.4.0-src/libgcc/../gcc/tsystem.h:87, from ../../../../gcc-4.4.0-src/libgcc/../gcc/libgcc2.c:29: /usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory Is this progress?! D