compilation.txt

#!/usr/bin/env bash

# run as:
## ./compilation.txt && ./app

# early version
## gcc sdl2-gl.c `sdl2-config --cflags --libs` -lopengl32 -lglu32 && ./a

# test for : pkg-config --cflags --libs
pkg-config --cflags --libs glu 1>/dev/null 2>/dev/null # no stdout , no stderr

if [ $? -eq 0 ];
then
    #echo "pkg-config --cflags --libs glu: success"
    GL_GLU=`pkg-config --cflags --libs glu`
    
    ###gcc sdl2-gl.c `sdl2-config --cflags --libs` `pkg-config --cflags --libs glu` -o app && ./app
else
    #echo "pkg-config --cflags --libs glu: failure"
    GL_GLU="-lopengl32 -lglu32"
    
    ###gcc sdl2-gl.c `sdl2-config --cflags --libs` -lopengl32 -lglu32 -o app && ./app
fi

#echo ":: GL_GLU=$GL_GLU"

# simpler version
###gcc sdl2-gl.c `sdl2-config --cflags --libs` $GL_GLU -o app && ./app

SDL="$(sdl2-config --cflags) $(sdl2-config --libs)"
#echo ":: SDL=$SDL"

COMMAND="gcc sdl2-gl.c $SDL $GL_GLU -o app"
#echo ":: COMMAND=$COMMAND"

echo ">> $COMMAND" && $COMMAND

if [ $? -eq 0 ];
then
    echo "compilation success"
    #./app
    ## ./compilation.txt && ./app # compilation, if success then run app
    exit 0 # success
else
    echo "================================="
    echo "compilation FAILURE"
    echo "================================="

    echo "CHECK whether this works properly: pkg-config --cflags --libs glu"
    pkg-config --cflags --libs glu
    
    echo "CHECK proper value assignment of variables: GL_GLU, SDL, COMMAND"

    echo ":: GL_GLU=$GL_GLU"
    echo ":: SDL=$SDL"    
    echo ":: COMMAND=$COMMAND"

    echo "CHECK: compilation COMMAND follows this SCHEME:"
    echo "gcc app-code.c \$SDL \$GL_GLU -o app"

    exit 1 # failure
fi