building from git unresolved symbols libgomp
 
  
 
  
 
 
 
 
 
 
    
        
        asked 5 years ago  
 
 heluani gravatar image  
 
 
 
 
    
        
        updated 5 years ago  
 
 tmonteil gravatar image  
 
 
 
 
 
fresh git cloned repository. Compilation fails with the spurious error as in https://trac.sagemath.org/ticket/28513. Running ./sage crashes with the error 
 
ImportError: /home/user/sage/local/lib/liblinbox.so.0: undefined symbol: GOMP_loop_ull_maybe_nonmonotonic_runtime_next
 
But the symbols are there:
 
$ nm /usr/lib/libgomp.so | grep GOMP_loop_ull_maybe_
0000000000010070 T GOMP_loop_ull_maybe_nonmonotonic_runtime_next
000000000000f210 T GOMP_loop_ull_maybe_nonmonotonic_runtime_start
 
This is on Arch 

$uname -a 
Linux host 5.3.5-arch1-1-ARCH #1 SMP PREEMPT Mon Oct 7 19:03:08 UTC 2019 x86_64 GNU/Linux
$ gcc --version
gcc (GCC) 9.2.0
 
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Comments
Could you copy/paste the full error log and not only the last error message?
Also, is your compiled linbox correctly linked to /usr/lib/libgmp.so? See
$ ldd /home/user/sage/local/lib/liblinbox.so
vdelecroix gravatar imagevdelecroix (
    
        5 years ago
    )
won't have access to that box until Monday but my guess is that it was an incompatible version of gcc-fortran. I just compiled in a different computer running arch updated the same day and it went smoothly.
heluani gravatar imageheluani (
    
        5 years ago
    )
Indeed it was a broken gcc-fortran. I just reinstalled gcc and gcc-fortran and recompiled without trouble. I suppose this question can be closed? thanks.
heluani gravatar imageheluani (
    
        5 years ago
    )
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