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#! /bin/sh
#
# shlib-install - install a shared library and do any necessary host-specific
#                 post-installation configuration (like ldconfig)
#
# usage: shlib-install [-D] -O host_os -d installation-dir [-b bin-dir] -i install-prog [-U] library
#
# Chet Ramey
# chet@po.cwru.edu

#
# defaults
#
INSTALLDIR=/usr/local/lib
LDCONFIG=ldconfig

PROGNAME=`basename $0`
USAGE="$PROGNAME [-D] -O host_os -d installation-dir [-b bin-dir] -i install-prog [-U] library"

# process options

while [ $# -gt 0 ]; do
        case "$1" in
        -O)     shift; host_os="$1"; shift ;;
        -d)     shift; INSTALLDIR="$1"; shift ;;
        -b)     shift; BINDIR="$1" ; shift ;;
        -i)     shift; INSTALLPROG="$1" ; shift ;;
        -D)     echo=echo ; shift ;;
        -U)     uninstall=true ; shift ;;
        -*)     echo "$USAGE" >&2 ; exit 2;;
        *)      break ;;
        esac
done

# set install target name
LIBNAME="$1"

if [ -z "$LIBNAME" ]; then
        echo "$USAGE" >&2
        exit 2
fi

OLDSUFF=old
MV=mv
RM="rm -f"
LN="ln -s"

# pre-install

if [ -z "$uninstall" ]; then
        ${echo} $RM ${INSTALLDIR}/${LIBNAME}.${OLDSUFF}
        if [ -f "$INSTALLDIR/$LIBNAME" ]; then
                ${echo} $MV $INSTALLDIR/$LIBNAME ${INSTALLDIR}/${LIBNAME}.${OLDSUFF}
        fi
fi

# install/uninstall

if [ -z "$uninstall" ] ; then
        ${echo} eval ${INSTALLPROG} $LIBNAME ${INSTALLDIR}/${LIBNAME}
else
        ${echo} ${RM} ${INSTALLDIR}/${LIBNAME}
fi

# post-install/uninstall

# HP-UX and Darwin/MacOS X require that a shared library have execute permission
# Cygwin installs both a dll (which must go in $BINDIR) and an implicit
# link library (in $libdir)
case "$host_os" in
hpux*|darwin*|macosx*)
        if [ -z "$uninstall" ]; then
                chmod 555 ${INSTALLDIR}/${LIBNAME}
        fi ;;
cygwin*)
        IMPLIBNAME=`echo ${LIBNAME} \
                | sed -e 's,^cyg,lib,' -e 's,[0-9]*.dll$,.dll.a,'`
        if [ -z "$uninstall" ]; then
                ${echo} $RM ${BINDIR}/${LIBNAME}.${OLDSUFF}
                if [ -f "$BINDIR/$LIBNAME" ]; then
                        ${echo} $MV $BINDIR/$LIBNAME $BINDIR/$LIBNAME.$OLDSUFF
                fi
                ${echo} $MV ${INSTALLDIR}/${LIBNAME} ${BINDIR}/${LIBNAME}
                ${echo} chmod a+x ${BINDIR}/${LIBNAME}
                ${echo} eval ${INSTALLPROG} ${LIBNAME}.a \
                        ${INSTALLDIR}/${IMPLIBNAME}
        else
                ${echo} ${RM} ${BINDIR}/${LIBNAME}
                ${echo} ${RM} ${INSTALLDIR}/${IMPLIBNAME}
        fi ;;

*)      ;;
esac

case "$LIBNAME" in
*.*.[0-9].[0-9])        # libname.so.M.N
        LINK2=`echo $LIBNAME | sed 's:\(.*\..*\.[0-9]\)\.[0-9]:\1:'`    # libname.so.M
        LINK1=`echo $LIBNAME | sed 's:\(.*\..*\)\.[0-9]\.[0-9]:\1:'`    # libname.so
        ;;
*.*.[0-9])              # libname.so.M
        LINK1=`echo $LIBNAME | sed 's:\(.*\..*\)\.[0-9]:\1:'`           # libname.so
        ;;
*.[0-9])                # libname.M
        LINK1=`echo $LIBNAME | sed 's:\(.*\)\.[0-9]:\1:'`               # libname
        ;;
*.[0-9].[0-9].dylib)    # libname.M.N.dylib
        LINK2=`echo $LIBNAME | sed 's:\(.*\.[0-9]\)\.[0-9]:\1:'`        # libname.M.dylib
        LINK1=`echo $LIBNAME | sed 's:\(.*\)\.[0-9]\.[0-9]:\1:'`        # libname.dylib
esac

INSTALL_LINK1='${echo} cd $INSTALLDIR && ${echo} ${LN} $LIBNAME $LINK1'
INSTALL_LINK2='${echo} cd $INSTALLDIR && ${echo} ${LN} $LIBNAME $LINK2'

#
# Create symlinks to the installed library.  This section is incomplete.
#
case "$host_os" in
*linux*)
        # libname.so.M -> libname.so.M.N
        ${echo} ${RM} ${INSTALLDIR}/$LINK2
        if [ -z "$uninstall" ]; then
                eval $INSTALL_LINK2
        fi

        # libname.so -> libname.so.M
        ${echo} ${RM} ${INSTALLDIR}/$LINK1
        if [ -z "$uninstall" ]; then
                ${echo} cd $INSTALLDIR && ${echo} ${LN} $LINK2 $LINK1
        fi
        ;;

bsdi4*|*gnu*|darwin*|macosx*|k*bsd*-gnu)
        # libname.so.M -> libname.so.M.N
        ${echo} ${RM} ${INSTALLDIR}/$LINK2
        if [ -z "$uninstall" ]; then
                eval $INSTALL_LINK2
        fi

        # libname.so -> libname.so.M.N
        ${echo} ${RM} ${INSTALLDIR}/$LINK1
        if [ -z "$uninstall" ]; then
                eval $INSTALL_LINK1
        fi
        ;;

solaris2*|aix4.[2-9]*|osf*|irix[56]*|sysv[45]*|dgux*)
        # libname.so -> libname.so.M
        ${echo} ${RM} ${INSTALLDIR}/$LINK1
        if [ -z "$uninstall" ]; then
                eval $INSTALL_LINK1
        fi
        ;;


# FreeBSD 3.x and above can have either a.out or ELF shared libraries
freebsd[3-9]*|freebsdelf[3-9]*|freebsdaout[3-9]*)
        if [ -x /usr/bin/objformat ] && [ "`/usr/bin/objformat`" = "elf" ]; then
                # libname.so -> libname.so.M
                ${echo} ${RM} ${INSTALLDIR}/$LINK1
                if [ -z "$uninstall" ]; then
                        eval $INSTALL_LINK1
                fi
        else
                # libname.so.M -> libname.so.M.N
                ${echo} ${RM} ${INSTALLDIR}/$LINK2
                if [ -z "$uninstall" ]; then
                        eval $INSTALL_LINK2
                fi

                # libname.so -> libname.so.M.N
                ${echo} ${RM} ${INSTALLDIR}/$LINK1
                if [ -z "$uninstall" ]; then
                        eval $INSTALL_LINK1
                fi
        fi
        ;;

hpux1*)
        # libname.sl -> libname.M
        ${echo} ${RM} ${INSTALLDIR}/$LINK1.sl
        if [ -z "$uninstall" ]; then
                eval $INSTALL_LINK1
        fi
        ;;

cygwin*)
        # Links to .dlls don't work.  Hence shobj-conf used DLLVERSION.dll
        # instead of so.SHLIB_MAJOR.SHLIB_MINOR.  The postinstall above
        # took care of everything else.
        ;;

*)      ;;
esac

exit 0