fixed snapshot support to work with snapshots made within the past two years ;)

made _alpha and _beta ebuilds auto-set SNAPSHOT
added function that allows us to enable a language only if it's supported in this release of gcc.
added stubs for f95 and treelang for when gcc 4.0 is released

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index 41bdcef2c584d9bda775548f626ab98b9a0c9ff0..b5683385f6600910dd99ed58cbafe0361e700ac5 100644 (file)
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1,6 +1,6 @@
 # Copyright 1999-2004 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.39 2004/10/26 21:16:09 lv Exp $
+# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.40 2004/10/27 00:19:41 lv Exp $
 #
 # This eclass should contain general toolchain-related functions that are
 # expected to not change, or change much.
@@ -33,6 +33,10 @@ gcc_setup_static_vars() {
        MY_PV_FULL="$(get_version_component_range 1-3)"
        MY_PV="$(get_version_component_range 1-2)"
 
+       GCCMAJOR="$(get_version_component_range 1)"
+       GCCMINOR="$(get_version_component_range 2)"
+       GCCMICRO="$(get_version_component_range 3)"
+
        MAIN_BRANCH="${PV}"  # Tarball, etc used ...
 
        # Pre-release support
@@ -40,9 +44,13 @@ gcc_setup_static_vars() {
                PRERELEASE=${PV/_pre/-}
        fi
 
-       GCCMAJOR="$(get_version_component_range 1)"
-       GCCMINOR="$(get_version_component_range 2)"
-       GCCMICRO="$(get_version_component_range 3)"
+
+       # make _alpha and _beta ebuilds automatically use a snapshot
+       if [ ${PV} != ${PV/_alpha/} ] ; then
+               SNAPSHOT="${MY_PV}-${PV##*_alpha}"
+       elif [ ${PV} != ${PV/_beta/} ] ; then
+               SNAPSHOT="${MY_PV}-${PV##*_beta}"
+       fi
 }
 
 
@@ -213,7 +221,7 @@ get_gcc_src_uri() {
        if [ -n "${PRERELEASE}" ] ; then
                GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/prerelease-${PRERELEASE}/gcc-${PRERELEASE}.tar.bz2"
        elif [ -n "${SNAPSHOT}" ] ; then
-               GCC_SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT//-}.tar.bz2"
+               GCC_SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT}.tar.bz2"
        else
                GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/releases/${P}/gcc-${MAIN_BRANCH}.tar.bz2"
                # we want all branch updates to be against the main release
@@ -268,7 +276,7 @@ gcc_get_s_dir() {
        if [ -n "${PRERELEASE}" ] ; then
                GCC_S="${WORKDIR}/gcc-${PRERELEASE}"
        elif [ -n "${SNAPSHOT}" ] ; then
-               GCC_S="${WORKDIR}/gcc-${SNAPSHOT//-}"
+               GCC_S="${WORKDIR}/gcc-${SNAPSHOT}"
        else
                GCC_S="${WORKDIR}/gcc-${MAIN_BRANCH}"
        fi
@@ -290,7 +298,7 @@ gcc_quick_unpack() {
        if [ -n "${PRERELEASE}" ] ; then
                unpack gcc-${PRERELEASE}.tar.bz2
        elif [ -n "${SNAPSHOT}" ] ; then
-               unpack gcc-${SNAPSHOT//-}.tar.bz2
+               unpack gcc-${SNAPSHOT}.tar.bz2
        else
                unpack gcc-${MAIN_BRANCH}.tar.bz2
                # We want branch updates to be against a release tarball
@@ -775,6 +783,18 @@ libc_has_ssp() {
 }
 
 
+# This is to make sure we don't accidentally try to enable support for a
+# language that doesnt exist. GCC 3.4 supports f77, while 4.0 supports f95, etc.
+#
+# Travis Tilley <lv@gentoo.org> (26 Oct 2004)
+#
+gcc-lang-supported() {
+       grep ^language=\"${1}\" ${S}/gcc/*/config-lang.in > /dev/null && return 0
+       ewarn "The ${1} language is not supported by this release of gcc"
+       return 1
+}
+
+
 gcc-library-configure() {
        # multilib support
        if [ "${GCC_TARGET_NO_MULTILIB}" == "true" ]
@@ -817,9 +837,11 @@ gcc-compiler-configure() {
        if ! use build ; then
                GCC_LANG="c"
                use !nocxx && GCC_LANG="${GCC_LANG},c++"
-               use f77 && GCC_LANG="${GCC_LANG},f77"
-               use objc && GCC_LANG="${GCC_LANG},objc"
-               use gcj && GCC_LANG="${GCC_LANG},java"
+               use f77 && gcc-lang-supported f77 && GCC_LANG="${GCC_LANG},f77"
+               #use f95 && gcc-lang-supported f95 && GCC_LANG="${GCC_LANG},f95"
+               #use treelang && gcc-lang-supported treelang && GCC_LANG="${GCC_LANG},treelang"
+               use objc && gcc-lang-supported objc && GCC_LANG="${GCC_LANG},objc"
+               use gcj && gcc-lang-supported java && GCC_LANG="${GCC_LANG},java"
                # We do NOT want 'ADA support' in here!
                # use ada  && gcc_lang="${gcc_lang},ada"
        else