It appears that the amd64 ncbi-blast+-2.5.0 package was compiled with gcc >= 5.0, as it requires a libgomp supporting OpenMP 4.0; however, this is not reflected in the dependencies: $ pkg which /usr/local/bin/blastn /usr/local/bin/blastn was installed by package ncbi-blast+-2.5.0 $ pkg info -d ncbi-blast+ ncbi-blast+-2.5.0: python27-2.7.13_1 pcre-8.39_1 p5-List-MoreUtils-0.416 perl5-5.24.1.r4_1 gcc-4.9.4 $ blastn -version /usr/lib/libgomp.so.1: version GOMP_4.0 required by /usr/local/bin/blastn not found weeks@cicer:ncbi-blast+$ LD_LIBRARY_PATH=/usr/local/lib/gcc49 blastn -version /usr/lib/libgomp.so.1: version GOMP_4.0 required by /usr/local/bin/blastn not found $ LD_LIBRARY_PATH=/usr/local/lib/gcc50 blastn -version /usr/lib/libgomp.so.1: version GOMP_4.0 required by /usr/local/bin/blastn not found
Can't confirm: % blastn -version blastn: 2.5.0+ Package: blast 2.5.0, build Jan 17 2017 03:48:58 Which FreeBSD version are you on? Did you use the official package or did you build it yourself?
10.3-RELEASE-p7, installed via pkg from the quarterly package repo. However, it works after I installed it today---looks like the package was rebuilt on the evening this bug report was filed: $ blastn -version blastn: 2.5.0+ Package: blast 2.5.0, build Jan 12 2017 21:21:51 Since I now can't reproduce the issue, I'll close it.