=> Bootstrap dependency digest>=20010302: found digest-20160304
===> Building for cdhit-4.6.4nb1
clang++  -fopenmp -O2 -O2 cdhit-common.c++ -c
clang++  -fopenmp -O2 -O2 cdhit-utility.c++ -c
clang++  -fopenmp -O2 -O2 cdhit.c++ -c
cdhit-common.c++:36:9: fatal error: 'omp.h' file not found
#include<omp.h>
        ^~~~~~~
1 error generated.
Makefile:69: recipe for target 'cdhit-common.o' failed
gmake: *** [cdhit-common.o] Error 1
gmake: *** Waiting for unfinished jobs....
*** Error code 2

Stop.
bmake[1]: stopped in /usr/pkgsrc/biology/cdhit
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/biology/cdhit