Error when using Madgraph

Are you on Mac?

by googling your error. I found a mac related issue:
https://github.com/osx-cross/homebrew-avr/issues/4
(but this sounds quite old thread)

This one sounds more recent actually (but also for mac)
https://github.com/Homebrew/homebrew-core/issues/25293

Both seems related to a homebrew issue.

Cheers,

Olivier

On 1 Feb 2019, at 05:12, Brandon Soubasis <<email address hidden><mailto:<email address hidden>>> wrote:

New question #678251 on MadGraph5_aMC@NLO:
https://answers.launchpad.net/mg5amcnlo/+question/678251

I tried getting back into running a few MG scripts and came across an error. Hopefully someone else has seen this.
$generate p p > t t~
Fine a this point
$output pp_tt
Fine a this point
$launch pp_tt
Then hit with the following error:

INFO: Update the dependent parameter of the param_card.dat
Generating 10000 events with run name run_01
survey run_01
INFO: compile directory
compile Source Directory
Error detected in "generate_events run_01"
write debug file /Users/brandonsoubasis/newMG/MG5_aMC_v2_6_4/pp_tt/run_01_tag_1_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
MadGraph5Error : A compilation Error occurs when trying to compile /Users/brandonsoubasis/newMG/MG5_aMC_v2_6_4/pp_tt/Source.
The compilation fails with the following output message:
   gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -c -o StringCast.o StringCast.f
   gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -c -o ranmar.o ranmar.f
   gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -c -o alfas_functions.o alfas_functions.f
   gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -c -o transpole.o transpole.f
   dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.15.dylib
     Referenced from: /usr/local/Cellar/gcc/7.2.0/libexec/gcc/x86_64-apple-darwin16.7.0/7.2.0/f951
     Reason: image not found
   dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.15.dylib
     Referenced from: /usr/local/Cellar/gcc/7.2.0/libexec/gcc/x86_64-apple-darwin16.7.0/7.2.0/f951
     Reason: image not found
   dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.15.dylib
     Referenced from: /usr/local/Cellar/gcc/7.2.0/libexec/gcc/x86_64-apple-darwin16.7.0/7.2.0/f951
     Reason: image not found
   dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.15.dylib
     Referenced from: /usr/local/Cellar/gcc/7.2.0/libexec/gcc/x86_64-apple-darwin16.7.0/7.2.0/f951
     Reason: image not found
   gfortran: internal compiler error: Abort trap: 6 (program f951)
   gfortran: internal compiler error: Abort trap: 6 (program f951)
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <https://github.com/Homebrew/homebrew-core/issues> for instructions.
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <https://github.com/Homebrew/homebrew-core/issues> for instructions.
   gfortran: internal compiler error: Abort trap: 6 (program f951)
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <https://github.com/Homebrew/homebrew-core/issues> for instructions.
   gfortran: internal compiler error: Abort trap: 6 (program f951)
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <https://github.com/Homebrew/homebrew-core/issues> for instructions.
   make: *** [transpole.o] Error 4
   make: *** Waiting for unfinished jobs....
   make: *** [alfas_functions.o] Error 4
   make: *** [ranmar.o] Error 4
   make: *** [StringCast.o] Error 4

Please try to fix this compilations issue and retry.
Help might be found at https://answers.launchpad.net/mg5amcnlo.
If you think that this is a bug, you can report this at https://bugs.launchpad.net/mg5amcnlo
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