#!/bin/sh

DESTDIR="${DESTDIR:-/}"
pkglibdir="${pkglibdir:-/usr/lib/rpm}"

RPMRC="${1:-rpmrc}"
MACROS="${2:-macros}"
PLATFORM="${3:-platform}"

TEMPRC="/tmp/rpmrc.$$"
cat << E_O_F > $TEMPRC
include:	$RPMRC
macrofiles:	$MACROS
E_O_F

RPM="./rpm --rcfile $TEMPRC"

ARCH="`$RPM --eval '%{_arch}'`"
VENDOR="`$RPM --eval '%{_vendor}'`"
OS="`$RPM --eval '%{_os}'`"
TARGET_PLATFORM="`$RPM --eval '%{_target_platform}'`"
TARGET="`$RPM --eval '%{_target}'`"

PPD="${DESTDIR}/${pkglibdir}/${ARCH}-${VENDOR}-${OS}"

[ -d $PPD ] || mkdir $PPD

RPMRC_OPTFLAGS="`$RPM --eval '%{optflags}'`"
RPMRC_OPTFLAGS="`echo $RPMRC_OPTFLAGS | sed -e 's, ,\ ,g'`"


cat $PLATFORM | \
  sed -e s,@RPMRC_OPTFLAGS@,$RPMRC_OPTFLAGS, -e 's,\${,%{_,' \
> ${PPD}/macros

#
# Better try to create these too until the smoke clears. Yuck.
[ "${ARCH}-${VENDOR}-${OS}" = "${TARGET}" ] || ln -sf ${ARCH}-${VENDOR}-${OS} ${DESTDIR}/${pkglibdir}/${TARGET}
[ "${ARCH}-${VENDOR}-${OS}" = "${TARGET_PLATFORM}" ] || ln -sf ${ARCH}-${VENDOR}-${OS} ${DESTDIR}/${pkglibdir}/${TARGET_PLATFORM}

rm $TEMPRC