Erro in libgmp when making fdk-aac
not.really at online.de
Tue Jul 19 16:05:09 UTC 2016
Michael Fuckner wrote:
> I am using Fedora24 (umgraded from 23) on Intel G3900 (Skylake) and try
> to compile fdk-aac. Any help appreciated!
> steps to reproduce:
> git clone https://github.com/mstorsjo/fdk-aac
> cd fdk-aac
> when I type make, I see this output:
> CXX libAACdec/src/aacdec_drc.lo
> libAACdec/src/aacdec_drc.cpp:137:3: internal compiler error: Illegal
> pParams->cut = FL2FXCONST_DBL(0.0f);
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://bugzilla.redhat.com/bugzilla> for instructions.
> Preprocessed source stored into /tmp/ccx49K6D.out file, please attach
> this to your bugreport.
> Makefile:1264: recipe for target 'libAACdec/src/aacdec_drc.lo' failed
> make: *** [libAACdec/src/aacdec_drc.lo] Error 1
> [0.14] molli123 at revo:~/fdk-aac >
> in dmesg I see (that's why I believe this problem is related to gmp):
> [87398.237931] traps: expr trap invalid opcode ip:7f542d3efa1b
> sp:7ffc3d9c3fe8 error:0 in libgmp.so.10.3.0[7f542d3b5000+92000]
> GMP-Version (packaged by Fedora): gmp-6.1.0-2.fc24.x86_64
You should (also) report this upstream Fedora, as they package a GMP
library built with '--enable-fat' (where code is selected at runtime
based on the actual CPU [capabilities]).
Since at least a couple of (less capable) "low-cost" Intel CPUs branded
"Skylake" (IMHO mainly for marketing reasons) in addition have hardware
bugs as Torbjörn described, *and* GCC depends on the GMP library (hence
can crash as in your case), Fedora should quickly upgrade their GMP
package, or at least include the respective patches available since a
couple of weeks IIRC.
> rpm -V looks good on gcc, gmp
> GCC-Version: gcc version 6.1.1 20160621 (Red Hat 6.1.1-3) (GCC)
> Linux revo.fritz.box 4.6.3-300.fc24.x86_64 #1 SMP Fri Jun 24 20:52:41
> UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
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