Compilation script for zlib/bzip2 on windows for the usual mingw toolchains

compile_zlib_bzip.sh

#!/bin/bash

# Get the date and compile folder
DATE_PREFIX=`date +"%Y-%m-%d_%H-%M_"`
FOLDERNAME="${DATE_PREFIX}compiles"

# Get the mingw prefixes
P32B=i686-w64-mingw32
P64B=x86_64-w64-mingw32

# Install prefixes
IP32B=${HOME}/ownapps/mingw-w64-i686
IP64B=${HOME}/ownapps/mingw-w64-x86_64

# Set the zlib and bzip2 versions
ZLIB_VER="1.2.8"
BZIP_VER="1.0.6"

ZLIB_DIR_NAME="zlib-${ZLIB_VER}"
ZLIB_ARC_NAME="${ZLIB_DIR_NAME}.tar.gz"
ZLIB_URL="http://zlib.net/${ZLIB_ARC_NAME}"

BZIP_DIR_NAME="bzip2-${BZIP_VER}"
BZIP_ARC_NAME="${BZIP_DIR_NAME}.tar.gz"
BZIP_URL="http://www.bzip.org/${BZIP_VER}/${BZIP_ARC_NAME}"

# Boilerplate functions
COL_R='\E[31m'
COL_G='\E[32m'
COL_Y='\E[33m'
COL_RESET='\E[0m'

info()
{
message=${1}
    echo -e "[${COL_G}INF${COL_RESET}] ${message}"
    return
}

warning()
{
message=${1}
    echo -e "[${COL_Y}WAR${COL_RESET}] ${message}"
    return
}

error()
{
message=${1}
    echo -e "[${COL_R}ERR${COL_RESET}] ${message}"
    return
}

download()
{
file=${1}
    wget "${file}"
    RETVAL=$?
    if [ ! "${RETVAL}" -eq 0 ]; then
        error "Download of ${file} failed!"
        exit 1
    else
        info "Download of ${file} succeeded."
        return
    fi
}

extract()
{
file=${1}
    tar -xf "${file}"
    RETVAL=$?
    if [ ! "${RETVAL}" -eq 0 ]; then
        error "Extraction of ${file} failed!"
        exit 1
    else
        info "Extraction of ${file} succeeded."
        return
    fi
}

compile()
{
specs=${1}
name=${2}
    make ${specs}
    RETVAL=$?
    if [ ! "${RETVAL}" -eq 0 ]; then
        error "Compilation of ${name} failed (make ${specs})!"
        exit 1
    else
        info "Compilation of ${name} succeeded."
        return
    fi
}
# Boilerplate ends

info "Starting the compile script."
info "32bit prefix is: ${P32B}"
info "64bit prefix is: ${P64B}"
info "Creating folder: ${FOLDERNAME}"
mkdir "${FOLDERNAME}"
cd "${FOLDERNAME}"

info "Downloading components..."
download "${ZLIB_URL}"
download "${BZIP_URL}"

info "Extracting components..."
extract "${ZLIB_ARC_NAME}"
extract "${BZIP_ARC_NAME}"

info "Compiling zlib..."
cd "${ZLIB_DIR_NAME}"
compile "-fwin32/Makefile.gcc PREFIX=${P32B}-" "32bit zlib"
info "Installing 32bit zlib..."
cp -v zconf.h zlib.h "${IP32B}/${P32B}/include/"
cp -v libz.a "${IP32B}/${P32B}/lib/"
make -f win32/Makefile.gcc clean
compile "-fwin32/Makefile.gcc PREFIX=${P64B}-" "64bit zlib"
info "Installing 64bit zlib..."
cp -v zconf.h zlib.h "${IP64B}/${P64B}/include/"
cp -v libz.a "${IP64B}/${P64B}/lib/"
cd ..

info "Compiling bzip2..."
cd "${BZIP_DIR_NAME}"
# Welp, auto-patching an include because otherwise win32/64 bzip2 won't cross-compile
sed -i 's/sys\\stat\.h/sys\/stat\.h/g' bzip2.c
# Now compile
compile "-i CC=${P32B}-gcc AR=${P32B}-ar RANLIB=${P32B}-ranlib" "32bit bzip2"
info "Installing 32bit bzip2..."
make -i install PREFIX="${IP32B}/${P32B}"
make clean
compile "-i CC=${P64B}-gcc AR=${P64B}-ar RANLIB=${P64B}-ranlib" "64bit bzip2"
make -i install PREFIX="${IP64B}/${P64B}"
cd ..

info "All compiled and installed!"
info "Don't worry about the chmod 'Bad file number' errors, that's just bzip2's Makefile failing."