Conda GCC compile OpenMP failure

I have a simple openmp example:

#include <stdio.h>

int main() {
  #pragma omp parallel
  {
    printf("https://helloacm.com\n");     
  }
  return 0;
}

I created two conda environments on different machine using the same procedure.

On one of the machine, the compilation failed with

(rcqa) vimos@x86_64-conda_cos6-linux-gnu ➜  anaconda3 gcc -fopenmp /tmp/tmp.c       
/home/vimos/anaconda3/envs/rcqa/bin/../lib/gcc/x86_64-conda_cos6-linux-gnu/7.3.0/../../../../x86_64-conda_cos6-linux-gnu/bin/ld: cannot find -lgomp
collect2: error: ld returned 1 exit status

I checked the output of the command

gcc --verbose -fopenmp /tmp/tmp.c

The only difference is that, the one failed has no such configure --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'.

GCC version info, this one works

(smu) vimos@x86_64-conda_cos6-linux-gnu ➜  ~ gcc --version                                   
gcc (crosstool-NG 1.23.0.450-d54ae) 7.3.0

this one failed

(rcqa) vimos@x86_64-conda_cos6-linux-gnu ➜  anaconda3 gcc --version
gcc (crosstool-NG 1.23.0.449-a04d0) 7.3.0

Is the configure the true reason of the failure?