Building wgrib2

wgrib2_macos_build.sh

#!/usr/bin/env bash

# NOTE: This requires you to have Homebrew installed
#       --> https://brew.sh/

# NOTE: You need to have Homebrew's GCC installed
#       --> brew install gcc

wget ftp://ftp.cpc.ncep.noaa.gov/wd51we/wgrib2/wgrib2.tgz
tar xvzf wgrib2.tgz
cd grib2/

# NOTE: gfortran is provided by the GCC homebrew formula
export CC=$(brew --prefix gcc)/bin/gcc-8
export FC=$(brew --prefix gcc)/bin/gfortran

echo -e "\033[32m==> \033[0mRunning MAKE"
make

echo ""
echo -e "\033[32m==> \033[0mRunning MAKE LIB"
make lib

wgrib2_ubuntu_build.sh

# Tested and Working on Ubuntu 14.04 and 18.04
sudo apt-get update && sudo apt-get upgrade -y
sudo apt-get install gfortran build-essential
wget ftp://ftp.cpc.ncep.noaa.gov/wd51we/wgrib2/wgrib2.tgz
tar xvzf wgrib2.tgz
cd grib2/

export CC=gcc
export FC=gfortran
make && make lib
ls -alh wgrib2/wgrib2
wgrib2/wgrib2 -config

There is a major flaw in the compilation code: I get an error message:

Grib.c:(.text+0x3f0): undefined reference to `aec_grib_out'

Please help me resolve.