This is a shell script enabling some useful options when working with assembly

asm.sh

#!/bin/bash

# Title: Assembling Script
# Version: 0.99
# Release: 06 Feb 2019
# Author: M. Kasim Doenmez
#
# running options:
##
## -c : compile C code and convert into ASM
## -c[0-3] : Compile with a set optimization level.
## -d : generate C driver (object file)
## -o : get ASM from existing object file
## -a : convert ASM to ELF object file
## -h : show all options and their usage
## -v : show version, author and path info
#
# REQUIRES:
## NASM: Assembler
## GCC: C/++ Compiler
## VIM: VI Improved editor
## Objconv: Object File Converter

# check for arguments
if [ $# == 0 ]; 
    then
        echo $0: usage: $0 -h
        exit 1
fi

version="0.99"

# retrieve asked option and convert to lower case
option=${1,,}

# Set aliases: 'h', 'v', '-c3'
if [ $option == "h" ]; 
    then
        option="-h"
elif [ $option == "v" ];
    then
        option="-v"

elif [ $option == "-c3" ];
    then
        option="-c"
fi

# seperate file name and file extension from the entered filename
filename=${2%.*}
ext=${2##*.}

case "$option"
in
    "-a")
        echo "Compiling ${filename}.${ext} to ${filename}.o"
        nasm -f elf ${filename}.${ext}
        exit 0;;
    "-c") 
        echo "Converting ${filename}.${ext} to ${filename}-${ext}.asm"
        gcc -m32 -fno-asynchronous-unwind-tables -std=c99 -O3 -s -c -o ${filename}-${ext}.o ${filename}.${ext}
        objconv -fnasm ${filename}-${ext}.o
	rm ${filename}-${ext}.o
        vim -c "%s/\(: function\)\|\(align\).\(.*\)\|ALIGN.\(.\)*//g" ${filename}-${ext}.asm
        exit 0;;
    "-c0") 
        echo "Converting ${filename}.${ext} to ${filename}-${ext}.asm"
        gcc -m32 -fno-asynchronous-unwind-tables -std=c99 -O0 -s -c -o ${filename}-${ext}.o ${filename}.${ext}
        objconv -fnasm ${filename}-${ext}.o
	rm ${filename}-${ext}.o
        vim -c "%s/\(: function\)\|\(align\).\(.*\)\|ALIGN.\(.\)*//g" ${filename}-${ext}.asm
        exit 0;;
    "-c1") 
        echo "Converting ${filename}.${ext} to ${filename}-${ext}.asm"
        gcc -m32 -fno-asynchronous-unwind-tables -std=c99 -O1 -s -c -o ${filename}-${ext}.o ${filename}.${ext}
        objconv -fnasm ${filename}-${ext}.o
	rm ${filename}-${ext}.o
        vim -c "%s/\(: function\)\|\(align\).\(.*\)\|ALIGN.\(.\)*//g" ${filename}-${ext}.asm
        exit 0;;
    "-c2") 
        echo "Converting ${filename}.${ext} to ${filename}-${ext}.asm"
        gcc -m32 -fno-asynchronous-unwind-tables -std=c99 -O2 -s -c -o ${filename}-${ext}.o ${filename}.${ext}
        objconv -fnasm ${filename}-${ext}.o
	rm ${filename}-${ext}.o
        vim -c "%s/\(: function\)\|\(align\).\(.*\)\|ALIGN.\(.\)*//g" ${filename}-${ext}.asm
        exit 0;;
    "-d")
        echo "Compiling ${filename}.${ext} driver to ${filename}.o"
        gcc -m32 -c ${filename}.${ext}
        exit 0;;
   "-o")
        echo "Disassembling ${filename}.${ext} to ${filename}.asm"
        objconv -fnasm ${filename}.${ext}
        vim -c "%s/\(: function\)\|\(align\).\(.*\)\|ALIGN.\(.\)*//g" ${filename}.asm
        exit 0;;
    "-h")
        echo "Assembling Script v${version}"
        echo ""
	echo "Option    Usage           Description"
        echo "-a :      asm -a file.asm Compile an ASM-Code in NASM syntax to an Object file"
        echo "-c :      asm -c file.c   Convert a C-Code into ASM in NASM syntax"
        echo "-c0:      asm -c0 file.c  Same as '-c', but no compiler optimization"
        echo "-c1:      asm -c1 file.c  Same as above, but slightly optimized"
        echo "-c2:      asm -c2 file.c  Same as above, but more optimized"
        echo "-c3:      asm -c3 file.c  Same as '-c'. Highest optimization level"
        echo "-d :      asm -d driver.c Compiles the driver into an object file"
        echo "-o :      asm -o file.o   Disassemble an Object file into ASM in NASM syntax"
        echo "-h :      asm -h          Show this message"
        echo "-v :      asm -v          Show version, author and path information"
        echo ""
        echo "NOTE: The entered file extension doesn't have to be the standard '.asm', '.c' or '.o'."
	echo "      But it is recommended to use the standards as the functionality cannot be guaranteed."
	echo "      Note that this script is rather made for private purposes. It comes with no warranty."
	echo ""
	echo "ATTENTION: This script can only compile and disassemble, but won't link any object files!"
        echo "           Use 'gcc -m32 -o %output% %obj1% %obj2% ...' to link object files.'" 
	echo ""
	echo "REQUIRES:"
	echo "VIM, NASM, GCC, Objconv"
        exit 0;;
    "-v")
        echo "Assembling Script v${version}"
        echo "Created by M. Kasim Doenmez"
        echo ""
        echo "in:"
        pwd
        exit 0;;
    *)
        echo "Invalid option entered"
        echo $0: usage: $0 -h
        exit 1;;
esac