configure

#!/bin/sh
##
 # configure
 # Copyright (C) 2011 - 2013 Peter Belkner <pbelkner@snafu.de>
 # 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 # 
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 # 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
###############################################################################
configure="${0}"
srcdir=`dirname "${0}"|sed -e 's,/$,,g'`
pfx=/usr/local
tooldir='$(PWD)/tools'
unpackdir='$(PWD)/unpack'
reldir='$(PWD)/release'
msvs='C:/Program Files (x86)/Microsoft Visual Studio 12.0'
mssdk='C:/Program Files (x86)/Microsoft SDKs/Windows/v7.1A'
#wasdk='D:/Programme/Winamp SDK'
wasdk='C:/Program Files (x86)/Winamp SDK'
nsis='C:/Program Files (x86)/NSIS'
#winamp='C:/Program Files (x86)/Winamp'
enable_static='yes'
enable_shared='yes'
enable_examples='no'
cflags='-MT -WX -O2'
cppflags='-D_USING_V110_SDK71_'

###############################################################################
help() {
  echo "usage: ${configure} <options>"
  echo
  echo "options (selection):"
  echo "  --help: display this message"
  echo "  '--with-msvs=<path to ms visual studio installation>'"
  echo "      default: \"${msvs}\""
  echo "  '--with-mssdk=<path to ms windows sdk installation>'"
  echo "      default: \"${mssdk}\""
  echo "  '--with-wasdk=<path to winamp sdk installation>'"
  echo "      default: \"${wasdk}\""
  echo "  '--with-nsis=<path to nsis installation>'"
  echo "      default: \"${nsis}\""
  echo "  CPPFLAGS=<CPPFLAGS> flags passed to the C pre-processor"
  echo "      (and the resource compiler)"
  echo "      default: \"${cppflags}\""
  echo "  CFLAGS=<CFLAGS> flags passed to the C compiler"
  echo "      default: \"${cflags}\""
}

###############################################################################
oss="linux mingw"

for i in $oss; do
  if test 1 -eq `uname|grep -i $i|wc -l`; then os=$i; fi
done

if [ 'x' = "x${os}" ]; then "Error: OS not supported."; exit 1; fi

###############################################################################
helpx() {
  echo "Usage: $0 [OPTION]... [VAR=VALUE]..."
  exit $1
}

extract() {
  echo "$1"|sed -e "s/$2=//g"
}

extract_enable() {
  case `echo "$1"|sed -e "s/--enable-$2//g"` in
    '') echo "yes" ;;
    =yes) echo "yes" ;;
    =no) echo "no" ;;
    *) help 1 ;;
  esac
}

extract_disable() {
  case `echo "$1"|sed -e "s/--disable-$2//g"` in
    '') echo "no" ;;
    =yes) echo "no" ;;
    =no) echo "yes" ;;
    *) help 1 ;;
  esac
}

while test "$1" != ''; do
  case $1 in
    --help) help 0 ;;
    --prefix=*) pfx=`extract "$1" '--prefix'` ;;
    --bindir=*) bindir=`extract "$1" '--bindir'` ;;
    --libdir=*) libdir=`extract "$1" '--libdir'` ;;
    --includedir=*) includedir=`extract "$1" '--includedir'` ;;
    --reldir=*) reldir=`extract "$1" '--reldir'` ;;
    --host=*) host=`extract "$1" '--host'` ;;
    --tooldir=*) tooldir=`extract "$1" '--tooldir'` ;;
    --unpackdir=*) unpackdir=`extract "$1" '--unpackdir'` ;;
    --enable-static*) enable_static=`extract_enable "$1" 'static'` ;;
    --disable-static*) enable_static=`extract_disable "$1" 'static'` ;;
    --enable-shared*) enable_shared=`extract_enable "$1" 'shared'` ;;
    --disable-shared*) enable_shared=`extract_disable "$1" 'shared'` ;;
    --enable-examples*) enable_examples=`extract_enable "$1" 'examples'` ;;
    --disable-examples*) enable_examples=`extract_disable "$1" 'examples'` ;;
    --with-msvs=*) msvs=`extract "$1" '--with-msvs'` ;;
    --with-mssdk=*) mssdk=`extract "$1" '--with-mssdk'` ;;
    --with-wasdk=*) wasdk=`extract "$1" '--with-wasdk'` ;;
    --with-nsis=*) nsis=`extract "$1" '--with-nsis'` ;;
#    --with-winamp=*) winamp=`extract "$1" '--with-winamp'` ;;
    CFLAGS=*) cflags=`extract "$1" 'CFLAGS'` ;;
    CPPFLAGS=*) cppflags=`extract "$1" 'CPPFLAGS'` ;;
    LDFLAGS=*) ldflags=`extract "$1" 'LDFLAGS'` ;;
    LIBS=*) libs=`extract "$1" 'LIBS'` ;;
    NSIS_HOME=*) nsis_home=`extract "$1" 'NSIS_HOME'` ;;
    *) echo "Error: Unknow option: $1."; help 1 ;;
  esac
  shift
done

###############################################################################
normpath() {
  if test 'x' = "x$1" -o "." = "$1"; then
    echo "$PWD"
  else
    echo "$1"|sed  -e "s,^\([^/]\),$PWD/\1,g"
  fi
}

pfx=`normpath "$pfx"`
srcdir=`normpath "$srcdir"`
reldir=`normpath "$reldir"`
bits=`"$srcdir"/bits`

###############################################################################
pfxpath() {
  if test 'x' = "x$1" -o "." = "$1"; then
    echo "$pfx/$2"
  else
    normpath "$1"
  fi 
}

bindir=`pfxpath "$bindir" bin`
libdir=`pfxpath "$libdir" lib`
includedir=`pfxpath "$includedir" include`

###############################################################################
rm -f config.mak
touch config.mak

echo "OS=$os" >> config.mak
echo "PREFIX=$pfx" >> config.mak
echo "SRCDIR=$srcdir" >> config.mak
echo "BINDIR=$bindir" >> config.mak
echo "LIBDIR=$libdir" >> config.mak
echo "INCLUDEDIR=$includedir" >> config.mak
echo "TOOLDIR=$tooldir" >> config.mak
echo "UNPACKDIR=$unpackdir" >> config.mak
echo "RELDIR=$reldir" >> config.mak
echo "MSVS=$msvs" >> config.mak
echo "MSSDK=$mssdk" >> config.mak
echo "WASDK=$wasdk" >> config.mak
echo "NSIS=$nsis" >> config.mak
#echo "WINAMP=$winamp" >> config.mak
echo "HOST=$host" >> config.mak
echo "BITS=$bits" >> config.mak
echo "ENABLE_STATIC=$enable_static" >> config.mak
echo "ENABLE_SHARED=$enable_shared" >> config.mak
echo "ENABLE_EXAMPLES=$enable_examples" >> config.mak
if [ 'x' != "x$cflags" ]; then echo "CFLAGS+=$cflags" >> config.mak; fi
if [ 'x' != "x$cppflags" ]; then echo "CPPFLAGS+=$cppflags" >> config.mak; fi
if [ 'x' != "x$ldflags" ]; then echo "LDFLAGS+=$ldflags" >> config.mak; fi
if [ 'x' != "x$libs" ]; then echo "LIBS+=$libs" >> config.mak; fi

if test ! . -ef $srcdir; then
  cp $srcdir/Makefile .
fi