#!/bin/bash

# Temporary hack until building dlls is easier with gcc -mno-cygwin
# ("mingw32").

# This is usable with cygwin 1.1.x and gcc-2.95.2 for mingw as
# distributed by Mumit Khan. For other combinations, no idea.

GCC="gcc"
DLLTOOL="dlltool"
AS=as

library=$1; shift
version=$1; shift;
def=$1; shift
ldargs="$*"

defswitch=""
[ -n "$def" -a "$def" != '-' ] && defswitch="--def $def"

libname=$library
[ $version != '-' ] && libname=$library-$version
dllfile=$libname.dll

for F in $ldargs; do
    case $F in
	*.[ao])	objs="$objs $F";;
    esac
done

# Check if we have a resource file for this DLL.
resfile=""
if [ -f $library.rc ]; then
    resfile=$library-win32res.o
    objs="$objs $resfile"
    ldargs="$ldargs $resfile"

    # Check if we have a build number stamp file.
    if [ -f $library-build.stamp ]; then
	read number <$library-build.stamp
	buildnumber=$[number+1]
	echo Build number is $buildnumber
	echo $buildnumber >$library-build.stamp
    else
	echo Using zero as build number
        buildnumber=0
    fi

    m4 -DBUILDNUMBER=$buildnumber <$library.rc >$library-win32res.rc
    windres $library-win32res.rc $library-win32res.o
    rm $library-win32res.rc
fi

# Build the DLL.

$GCC -mdll -mno-cygwin -Wl,--base-file,$library.base -o $dllfile $ldargs &&
$DLLTOOL --as=$AS --dllname $dllfile $defswitch --base-file $library.base --output-exp $library.exp $objs &&
$GCC -mdll -mno-cygwin -Wl,--base-file,$library.base,$library.exp -o $dllfile $ldargs &&
$DLLTOOL --as=$AS --dllname $dllfile $defswitch --base-file $library.base --output-exp $library.exp $objs &&
$GCC -mdll -mno-cygwin -Wl,$library.exp -o $dllfile $ldargs &&
$DLLTOOL --as=$AS --dllname $dllfile $defswitch --output-lib lib$libname.a $objs

# Finally, also build import libraries for the Microsoft linker. You
# will either need to have some decent version of MSVC, or get lib.exe
# (and link.exe) from the (freely downloadable) Microsoft Platform SDK.

if type -p lib.exe && [ -n "$def" -a "$def" != '-' ]; then
    lib -name:$libname.dll -def:$def -out:$libname.lib
fi

rm $library.base $library.exp 2>/dev/null