# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-lang/perl/perl-5.8.0-r9.ebuild,v 1.4 2003/05/27 19:03:08 rac Exp $

# The basic theory based on comments from Daniel Robbins <drobbins@gentoo.org>.
#
# We split the perl ebuild into libperl and perl.  The layout is as follows:
#
# libperl:
#
#  This is a slotted (SLOT=[0-9]*) ebuild, meaning we should be able to have a
#  few versions that are not binary compadible installed.
#
#  How we get libperl.so multi-versioned, is by adding to the link command:
#
#    -Wl,-soname -Wl,libperl.so.`echo $(LIBPERL) | cut -d. -f3`
#
#  This gives us:
#
#    $(LIBPERL): $& perl$(OBJ_EXT) $(obj) $(LIBPERLEXPORT)
#        $(LD) -o $@ $(SHRPLDFLAGS) perl$(OBJ_EXT) $(obj) \
#              -Wl,-soname -Wl,libperl.so.`echo $(LIBPERL) | cut -d. -f3`
#
#  We then configure perl with LIBPERL set to:
#
#    LIBPERL="libperl.so.${SLOT}.`echo ${PV} | cut -d. -f1,2`"
#
#  Or with the variables defined in this ebuild:
#
#    LIBPERL="libperl.so.${PERLSLOT}.${SHORT_PV}"
#
#  The result is that our 'soname' is 'libperl.so.${PERLSLOT}' (at the time of
#  writing this for perl-5.8.0, 'libperl.so.1'), causing all apps that is linked
#  to libperl to link to 'libperl.so.${PERLSLOT}'.
#
#  If a new perl version, perl-z.y.z comes out that have a libperl not binary
#  compatible with the previous version, we just keep the previous libperl
#  installed, and all apps linked to it will still be able to use:
#
#    libperl.so.${PERLSLOT}'
#
#  while the new ones will link to:
#
#    libperl.so.$((PERLSLOT+1))'
#
# perl:
#
#  Not much to this one.  It compiles with a static libperl.a, and are unslotted
#  (meaning SLOT=0).  We thus always have the latest *stable* perl version
#  installed, with corrisponding version of libperl.  The perl ebuild will of
#  course DEPEND on libperl.
#
# Martin Schlemmer <azarah@gentoo.org> (28 Dec 2002).


IUSE="berkdb gdbm threads"

inherit eutils flag-o-matic 

# Perl has problems compiling with -Os in your flags
replace-flags "-Os" "-O2"
# This flag makes compiling crash in interesting ways
filter-flags "-malign-double"


# The slot of this binary compat version of libperl.so
PERLSLOT="1"

SHORT_PV="`echo ${PV} | cut -d. -f1,2`"
MY_P="${P/lib}"
S="${WORKDIR}/${MY_P}"
DESCRIPTION="Larry Wall's Practical Extraction and Reporting Language"
SRC_URI="ftp://ftp.perl.org/pub/CPAN/src/${MY_P}.tar.gz"
HOMEPAGE="http://www.perl.org" 

if [ "${PN}" = "libperl" ]
then
	SLOT="${PERLSLOT}"
else
	SLOT="0"
fi

LIBPERL="libperl.so.${PERLSLOT}.${SHORT_PV}"

LICENSE="Artistic GPL-2"
KEYWORDS="x86 sparc ~ppc alpha ~mips hppa arm"

DEPEND="sys-apps/groff
	berkdb? ( >=sys-libs/db-3.2.3h-r3 =sys-libs/db-1.85-r1 )
	gdbm? ( >=sys-libs/gdbm-1.8.0 )
	>=sys-apps/portage-2.0.45-r5"
if [ "${PN}" = "perl" ]
then
	DEPEND="${DEPEND}
		=sys-devel/libperl-${PV}*"
fi

RDEPEND="berkdb? ( >=sys-libs/db-3.2.3h-r3 =sys-libs/db-1.85-r1 ) 
	gdbm? ( >=sys-libs/gdbm-1.8.0 )"

if [ "${PN}" = "libperl" ]
then
	# If we are installing a new version of libperl, we *have* to update perl as
	# well, else all things linking to libperl.so will break at *build* time ..
	PDEPEND=">=dev-lang/perl-${PV}"
else
	PDEPEND=">=dev-perl/Safe-2.09"
fi

pkg_setup() {
	# I think this should rather be displayed if you *have* 'threads'
	# in USE if it could break things ...
	if [ -n "`use threads`" ]
	then
		ewarn ""
		ewarn "PLEASE NOTE: You are compiling perl-5.8 with"
		ewarn "threading enabled."
		ewarn "Threading is not supported by all applications "
		ewarn "that compile against perl. You use threading at "
		ewarn "your own discretion. "
		ewarn ""
		sleep 10
	else
		ewarn ""
		ewarn "PLEASE NOTE: If you want to compile perl-5.8 with"
		ewarn "threading enabled , you must restart this emerge"
		ewarn "with USE=threads emerge...."
		ewarn "Threading is not supported by all applications "
		ewarn "that compile against perl. You use threading at "
		ewarn "your own discretion. "
		ewarn ""
		sleep 10
	fi

	if [ "${PN}" = "perl" -a ! -f /usr/lib/${LIBPERL} ]
	then
		# Make sure we have libperl installed ...
		eerror "Cannot find /usr/lib/${LIBPERL}!  Make sure that you"
		eerror "have sys-libs/libperl installed properly ..."
		die "Cannot find /usr/lib/${LIBPERL}!"
	fi
}

src_unpack() {

	unpack ${A}

	if [ "${PN}" = "libperl" ]
	then
		# Fix the build scripts to create libperl with a soname of ${SLOT}.
		# We basically add:
		#
		#   -Wl,-soname -Wl,libperl.so.`echo $(LIBPERL) | cut -d. -f3`
		#
		# to the line that links libperl.so, and then set LIBPERL to:
		#
		#   LIBPERL=libperl.so.${SLOT}.`echo ${PV} | cut -d. -f1,2`
		#
		cd ${S}; epatch ${FILESDIR}/${P}-create-libperl-soname.patch
	else
		# Fix the definition of 'int sockatmark(int);' in perl.h to have __THROW.
		# This fixes bug #12605.
		# <azarah@gentoo.org> (28 Dec 2002).
		cd ${S}; epatch ${FILESDIR}/${P}-sockatmark-should-__THROW.patch
	fi
}

src_compile() {

	export LC_ALL="C"
	local myconf=""
	
	if [ "`use threads`" ]
	then
		einfo "using threads"
		mythreading="-multi"
		myconf="-Dusethreads ${myconf}"
		myarch="${CHOST%%-*}-linux-thread"
	else
		myarch="${CHOST%%-*}-linux"
	fi

	if [ "`use gdbm`" ]
	then
		myconf="${myconf} -Di_gdbm"
	fi
	if [ "`use berkdb`" ]
	then
		myconf="${myconf} -Di_db -Di_ndbm"
	else
		myconf="${myconf} -Ui_db -Ui_ndbm"
	fi
	if [ "`use sparc`" ]
	then
		myconf="${myconf} -Ud_longdbl"
	fi
	if [ "`use sparc64`" ]
	then
		myconf="${myconf} -Ud_longdbl"
	fi
	if [ "`use alpha`" -a "${CC}" == "ccc" ]
	then
		ewarn "Perl will not be built with berkdb support, use gcc if you needed it..."
		myconf="${myconf} -Ui_db -Ui_ndbm"
	fi

	[ "${ARCH}" = "hppa" ] && append-flags -fPIC
	
	if [ "${PN}" = "libperl" ]
	then
		rm -f config.sh Policy.sh

		sh Configure -des \
			-Darchname="${myarch}" \
			-Dcccdlflags='-fPIC' \
			-Dccdlflags='-rdynamic' \
			-Dcc="${CC:-gcc}" \
			-Dprefix='/usr' \
			-Dvendorprefix='/usr' \
			-Dsiteprefix='/usr' \
			-Dlocincpth=' ' \
			-Doptimize="${CFLAGS}" \
			-Duselargefiles \
			-Duseshrplib \
			-Dman3ext='3pm' \
			-Dlibperl="${LIBPERL}" \
			-Dd_dosuid \
			-Dd_semctl_semun \
			-Dcf_by='Gentoo' \
			-Ud_csh \
			${myconf} || die

		emake -f Makefile depend || die "Couldn't make libperl.so depends"
		emake -f Makefile ${LIBPERL} || die "Unable to make libperl.so" 
		mv ${LIBPERL} ${WORKDIR}
	else
cat > config.over <<EOF
installprefix=${D}/usr
installarchlib=\`echo \$installarchlib | sed "s!\$prefix!\$installprefix!"\`
installbin=\`echo \$installbin | sed "s!\$prefix!\$installprefix!"\`
installman1dir=\`echo \$installman1dir | sed "s!\$prefix!\$installprefix!"\`
installman3dir=\`echo \$installman3dir | sed "s!\$prefix!\$installprefix!"\`
installman1dir=\`echo \$installman1dir | sed "s!/share/share/!/share/!"\`
installman3dir=\`echo \$installman3dir | sed "s!/share/share/!/share/!"\`
installman1dir=\`echo \$installman1dir | sed "s!/usr/man/!/usr/share/man/!"\`
installman3dir=\`echo \$installman3dir | sed "s!/usr/man/!/usr/share/man/!"\`
man1ext=1
man3ext=3pm
installprivlib=\`echo \$installprivlib | sed "s!\$prefix!\$installprefix!"\`
installscript=\`echo \$installscript | sed "s!\$prefix!\$installprefix!"\`
installsitelib=\`echo \$installsitelib | sed "s!\$prefix!\$installprefix!"\`
installsitearch=\`echo \$installsitearch | sed "s!\$prefix!\$installprefix!"\`
EOF
sleep 10
		sh Configure -des \
			-Darchname="${myarch}" \
			-Dcc="${CC:-gcc}" \
			-Dprefix='/usr' \
			-Dvendorprefix='/usr' \
			-Dsiteprefix='/usr' \
			-Dlocincpth=' ' \
			-Doptimize="${CFLAGS}" \
			-Duselargefiles \
			-Dd_dosuid \
			-Dd_semctl_semun \
			-Dscriptdir=/usr/bin \
			-Dman3ext='3pm' \
			-Dcf_by='Gentoo' \
			-Ud_csh \
			${myconf} || die "Unable to configure"
			
		MAKEOPTS="${MAKEOPTS} -j1" emake || die "Unable to make"
	
		emake -i test CCDLFLAGS=
	fi
}

src_install() {
	
	export LC_ALL="C"
	
	if [ "${PN}" = "libperl" ]
	then
		dolib.so ${WORKDIR}/${LIBPERL}
		preplib
	else
		# Need to do this, else apps do not link to dynamic version of
		# the library ...
		local coredir="/usr/lib/perl5/${PV}/${myarch}${mythreading}/CORE"
		dodir ${coredir}
		dosym ../../../../${LIBPERL} ${coredir}/${LIBPERL}
		dosym ../../../../${LIBPERL} ${coredir}/libperl.so.${PERLSLOT}
		dosym ../../../../${LIBPERL} ${coredir}/libperl.so
		
		# Fix for "stupid" modules and programs
		dodir /usr/lib/perl5/site_perl/${PV}/${myarch}${mythreading}

		make DESTDIR="${D}" \
			INSTALLMAN1DIR="${D}/usr/share/man/man1" \
			INSTALLMAN3DIR="${D}/usr/share/man/man3" \
			install || die "Unable to make install"

		cp -f utils/h2ph utils/h2ph_patched
		epatch ${FILESDIR}/perl-5.8.0-RC2-special-h2ph-not-failing-on-machine_ansi_header.patch

		LD_LIBRARY_PATH=. ./perl -Ilib utils/h2ph_patched \
			-a -d ${D}/usr/lib/perl5/${PV}/${myarch}${mythreading} <<EOF
asm/termios.h
syscall.h
syslimits.h
syslog.h
sys/ioctl.h
sys/socket.h
sys/time.h
wait.h
EOF

		# This is to fix a missing c flag for backwards compat
		for i in `find ${D}/usr/lib/perl5 -iname "Config.pm"`;do
			sed -e "s:ccflags=':ccflags='-DPERL5 :" \
			    -e "s:cppflags=':cppflags='-DPERL5 :" \
				${i} > ${i}.new &&\
				mv ${i}.new ${i} || die "Sed failed"
		done

		# A poor fix for the miniperl issues
		dosed 's:./miniperl:/usr/bin/perl:' /usr/lib/perl5/${PV}/ExtUtils/xsubpp
		fperms 0444 /usr/lib/perl5/${PV}/ExtUtils/xsubpp
		dosed 's:./miniperl:/usr/bin/perl:' /usr/bin/xsubpp
		fperms 0755 /usr/bin/xsubpp


		./perl installman \
			--man1dir="${D}/usr/share/man/man1" --man1ext='1' \
			--man3dir="${D}/usr/share/man/man3" --man3ext='3'

		# This removes ${D} from Config.pm and .packlist
		for i in `find ${D} -iname "Config.pm"` `find ${D} -iname ".packlist"`;do 
			einfo "Removing ${D} from ${i}..."
			sed -e "s:${D}::" ${i} > ${i}.new &&\
				mv ${i}.new ${i} || die "Sed failed"
		done
	fi
	
	dodoc Changes* Artistic Copying README Todo* AUTHORS

	if [ "${PN}" = "perl" ]
	then
		# HTML Documentation
		# We expect errors, warnings, and such with the following. 

		dodir /usr/share/doc/${PF}/html
		./perl installhtml \
			--podroot='.' \
			--podpath='lib:ext:pod:vms' \
			--recurse \
			--htmldir="${D}/usr/share/doc/${PF}/html" \
			--libpods='perlfunc:perlguts:perlvar:perlrun:perlop'
	fi
}

pkg_postinst() {

	# Make sure we do not have stale/invalid libperl.so 's ...
	if [ -f "${ROOT}usr/lib/libperl.so" -a ! -L "${ROOT}usr/lib/libperl.so" ]
	then
		mv -f ${ROOT}usr/lib/libperl.so ${ROOT}usr/lib/libperl.so.old
	fi

	if [ "${PN}" = "libperl" ]
	then
		# Next bit is to try and setup the /usr/lib/libperl.so symlink
		# properly ...
		local libnumber="`ls -1 ${ROOT}usr/lib/libperl.so.?.* | grep -v '\.old' | wc -l`"
		if [ "${libnumber}" -eq 1 ]
		then
			# Only this version of libperl is installed, so just link libperl.so
			# to the *soname* version of it ...
			ln -snf libperl.so.${PERLSLOT} ${ROOT}usr/lib/libperl.so
		else
			if [ -x "${ROOT}/usr/bin/perl" ]
			then
				# OK, we have more than one version .. first try to figure out
				# if there are already a perl installed, if so, link libperl.so
				# to that *soname* version of libperl.so ...
				local perlversion="`${ROOT}/usr/bin/perl -V:version | cut -d\' -f2 | cut -d. -f1,2`"
				
				cd ${ROOT}usr/lib
				# Link libperl.so to the *soname* versioned lib ...
				ln -snf `echo libperl.so.?.${perlversion} | cut -d. -f1,2,3` libperl.so
			else
				local x latest
				
				# Nope, we are not so lucky ... try to figure out what version
				# is the latest, and keep fingers crossed ...
				for x in `ls -1 ${ROOT}usr/lib/libperl.so.?.*`
				do
					latest="${x}"
				done
				
				cd ${ROOT}usr/lib
				# Link libperl.so to the *soname* versioned lib ...
				ln -snf `echo ${latest##*/} | cut -d. -f1,2,3` libperl.so
			fi
		fi
	else
		local perllib="`readlink -f ${ROOT}usr/lib/libperl.so | sed -e 's:^.*/::'`"

		# If we are installing perl, we need the /usr/lib/libperl.so symlink to
		# point to the version of perl we are running, else builing something
		# against libperl.so will break ...
		if [ "${perllib}" != "${LIBPERL}" ]
		then
			# Delete stale symlinks
			rm -f ${ROOT}usr/lib/libperl.so
			rm -f ${ROOT}usr/lib/libperl.so.${PERLSLOT}
			# Regenerate libperl.so.${PERLSLOT}
			ln -snf ${LIBPERL} ${ROOT}usr/lib/libperl.so.${PERLSLOT}
			# Create libperl.so (we use the *soname* versioned lib here ..)
			ln -snf libperl.so.${PERLSLOT} ${ROOT}usr/lib/libperl.so
		fi
		
		if [ "${ROOT}" = "/" ]
		then
			ebegin "Converting C header files to the corresponding Perl format"
			cd /usr/include; h2ph *.h sys/*.h
		fi

		eerror ""
		eerror "If this is an upgrade to a perl 5.6.1 system,"
		eerror "~OR~ an upgrade to a previous Gentoo release"
		eerror "of perl 5.8.0, prior to -r8 "
		eerror "you may need to recompile applications that"
		eerror "were emerged against the old libperl.so"
		eerror ""
		eerror "${FILESDIR}/libperl_rebuilder "
		eerror "is provided to assist with this. "
		eerror "PLEASE DO NOT INTERRUPT THE RUNNING OF THIS SCRIPT."
		eerror "Part of the rebuilding of applications compiled against "
		eerror "your old libperl involves temporarily unmerging"
		eerror "them - interruptions could leave you with unmerged"
		eerror "packages before they can be remerged."
		eerror ""
		eerror "If you have run the rebuilder and a package still gives"
		eerror "you trouble, and re-emerging it fails to correct"
		eerror "the problem, please check http://bugs.gentoo.org/"
		eerror "for more information or to report a bug."
		eerror ""
		sleep 5
		eerror ""
		
	fi
}