build.sh

#!/bin/bash
#
# @(#)build.sh
# @author Karl Ljungkvist <k.ljungkvist@gmail.com>

set -e

BITS=64
RCC_BUILD=debug

while [ $# -gt 1 ] ; do

    if [ $1 == -64 ] ; then
        BITS=64
        shift
    elif [ $1 == -32 ] ; then
        BITS=32
        shift
    elif [ $1 == "-v" ] ; then
        shift
        VERBOSE=1
    elif [ $1 == "-r" ] ; then
        shift
        RCC_BUILD=release
    fi
done

if [ $BITS == 32 ] ; then
    ARCH=i386
    DYNAMIC_LINKER="/lib/ld-linux.so.2"
elif [ $BITS == 64 ] ; then
    ARCH=x86_64
    DYNAMIC_LINKER="/lib64/ld-linux-x86-64.so.2"
fi


repo_root=$(dirname $0)

CC=${repo_root}/target/${RCC_BUILD}/rcc

source_file=$1
prog_name=${source_file%.c}
assembly_file=${prog_name}.s
object_file=${prog_name}.o

LIB_DIR="/usr/lib/${ARCH}-linux-gnu"
LINK_FLAGS="-m elf_${ARCH} -dynamic-linker ${DYNAMIC_LINKER} ${LIB_DIR}/Scrt1.o ${LIB_DIR}/crti.o ${LIB_DIR}/crtn.o -lc"

if [[ $VERBOSE ]] ; then echo "Compiling ${source_file} -> ${assembly_file}" ; fi
${CC} ${VERBOSE:+-v} "-m${BITS}" -o $assembly_file $source_file

if [[ $VERBOSE ]] ; then echo "Assembling ${assembly_file} -> ${object_file}" ; fi
as --${BITS} -o $object_file $assembly_file

if [[ $VERBOSE ]] ; then echo "Linking ${object_file} -> ${prog_name}" ; fi
ld ${LINK_FLAGS} -o $prog_name $object_file

rm $object_file $assembly_file