Hello,
motivated by the recent MPC 1.0.2 announcement, I looked at
./contrib/download_prerequisites and also at
ftp://gcc.gnu.org/pub/gcc/infrastructure/ to see which versions are
offered there.
Question: Would it make sense to place newer versions into
infrastructure and update ./contrib/download_prerequisites for those? I
believe most distros use newer versions nowadays and as some bugs have
been fixed in newer versions...
* GMP: infrastructure 4.3.2 (2010-01-08), current: 5.1.3 (2013-09-30)
* mpfr: infrastructure 2.4.2 (2009-11-30), current: 3.1.2 (2013-03-13)
* mpc: infrastructure 0.8.1 (2009-12-08), current: 1.0.2 (2014-01-15)
* ISL: infrastructure 0.11.1 (2012-12-12), current: 0.12.2 (2014-01-12)
* CLooG: infrastructure 0.18.0 (2012-12-20), current: 0.18.1
(2013-10-11) [Or 0.18.2 (2013-12-20) according to the GIT tag, but that
release only added a howto_cloog_release.txt file ...]
[BTW: CLooG 0.18.1 officially requires GMP 5.0.2 or later, I don't know
about 0.18.0 but I wouldn't be surprised if the same holds. Thus, for
in-tree builds that would be a reason to offer GMP 5.1.3 or 5.0.5.)
* * *
Note: That's independent from changing the prerequisites, listed at
http://gcc.gnu.org/install/prerequisites.html; currently infrastructure
matches the (lowest) version listed there.
* GMP: 4.3.2+; configure checks for: >= GCC_GMP_VERSION_NUM(4,2,3)
* MPFR: 2.4.2+; configure checks for >= MPFR_VERSION_NUM(2,4,0)
* MPC: 0.8.1+; configure: >= MPC_VERSION_NUM(0,8,1)
* ISL 0.11.1 (exact version?); configure: isl-0.10 or isl-0.11 or isl-0.12
* CLooG: 0.18.0 (exact version?); configure: 0.17 or 0.18,
BTW: quick grep only shows the following version dependence in
gcc/*{/*}.[ch]:
* gcc/fortran/simplify.c:
MPFR_VERSION < MPFR_VERSION_NUM(3,1,0)
* toplev.c:
#if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) &&
__GNU_MP_VERSION_PATCHLEVEL == 0
That's < than prerequisites but >= configure check
Regarding the prerequisites, one could consider bumping the GMP version
in the configure check to 4.3.0 - and remove the conditional code in
toplev.c. Otherwise, I think there is no real need to require newer
versions. However, one could add "or newer" to ISL/CLooG.
Tobias
