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# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
# @ECLASS: wxwidgets.eclass
# @MAINTAINER:
# wxwidgets@gentoo.org
# @BLURB: Manages build configuration for wxGTK-using packages.
# @DESCRIPTION:
# This eclass gives ebuilds the ability to build against a specific wxGTK
# SLOT and profile without interfering with the system configuration. Any
# ebuild with a x11-libs/wxGTK dependency must use this eclass.
#
# There are two ways to do it:
#
# - set WX_GTK_VER before inheriting the eclass
# - set WX_GTK_VER and call need-wxwidgets from a phase function
#
# (where WX_GTK_VER is the SLOT you want)
#
# If your package has optional support for wxGTK (ie. by a USE flag) then
# you should use need-wxwidgets. This is important because some packages
# will force-enable wxGTK if they find WX_CONFIG set in the environment.
#
# @CODE
# inherit wxwidgets
#
# IUSE="X wxwidgets"
# DEPEND="wxwidgets? ( x11-libs/wxGTK:2.8[X?] )"
#
# src_configure() {
# if use wxwidgets; then
# WX_GTK_VER="2.8"
# if use X; then
# need-wxwidgets unicode
# else
# need-wxwidgets base-unicode
# fi
# fi
# econf --with-wx-config="${WX_CONFIG}"
# }
# @CODE
#
# That's about as complicated as it gets. 99% of ebuilds can get away with:
#
# @CODE
# inherit wxwidgets
# DEPEND="wxwidgets? ( x11-libs/wxGTK:2.8[X] )
# ...
# WX_GTK_VER=2.8 need-wxwidgets unicode
# @CODE
#
# Note: unless you know your package works with wxbase (which is very
# doubtful), always depend on wxGTK[X].
#
# Debugging: In wxGTK 3.0 and later debugging support is enabled in the
# library by default and needs to be controlled at the package level.
# Use the -DNDEBUG preprocessor flag to disable debugging features.
# (Using need-wxwidgets will do this for you, see below.)
inherit eutils flag-o-matic multilib
# We do this in global scope so ebuilds can get sane defaults just by
# inheriting.
if [[ -z ${WX_CONFIG} ]]; then
if [[ -n ${WX_GTK_VER} ]]; then
for wxtoolkit in mac gtk2 base; do
# newer versions don't have a seperate debug profile
for wxdebug in xxx release- debug-; do
wxconf="${wxtoolkit}-unicode-${wxdebug/xxx/}${WX_GTK_VER}"
[[ -f ${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf} ]] || continue
WX_CONFIG="${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf}"
WX_ECLASS_CONFIG="${WX_CONFIG}"
break
done
[[ -n ${WX_CONFIG} ]] && break
done
[[ -n ${WX_CONFIG} ]] && export WX_CONFIG WX_ECLASS_CONFIG
fi
fi
# @FUNCTION: need-wxwidgets
# @USAGE: <profile>
# @DESCRIPTION:
#
# Available profiles are:
#
# unicode (USE="X")
# base-unicode (USE="-X")
#
# This lets you choose which config file from /usr/lib/wx/config is used when
# building the package. It also exports ${WX_CONFIG} with the full path to
# that config.
#
# If your ebuild does not have a debug USE flag, or it has one and it is
# disabled, -DNDEBUG will be automatically added to CPPFLAGS. This can be
# overridden by setting WX_DISABLE_DEBUG if you want to handle it yourself.
need-wxwidgets() {
local wxtoolkit wxdebug wxconf
if [[ -z ${WX_GTK_VER} ]]; then
eerror "WX_GTK_VER must be set before calling $FUNCNAME."
echo
die
fi
if [[ ${WX_GTK_VER} != 2.8 && ${WX_GTK_VER} != 2.9 && ${WX_GTK_VER} != 3.0 ]]; then
eerror "Invalid WX_GTK_VER: ${WX_GTK_VER} - must be set to a valid wxGTK SLOT."
echo
die
fi
case $1 in
unicode|base-unicode) ;;
*) eerror "Invalid $FUNCNAME profile: $1"
echo
die
;;
esac
# wxbase is provided by both gtk2 and base installations
if has_version "x11-libs/wxGTK:${WX_GTK_VER}[aqua]"; then
wxtoolkit="mac"
elif has_version "x11-libs/wxGTK:${WX_GTK_VER}[X]"; then
wxtoolkit="gtk2"
else
wxtoolkit="base"
fi
# 2.8 has a separate debug element
if [[ ${WX_GTK_VER} == 2.8 ]]; then
if has_version "x11-libs/wxGTK:${WX_GTK_VER}[debug]"; then
wxdebug="debug-"
else
wxdebug="release-"
fi
else
if [[ -z ${WX_DISABLE_DEBUG} ]]; then
use_if_iuse debug || append-cppflags -DNDEBUG
fi
fi
wxconf="${wxtoolkit}-unicode-${wxdebug}${WX_GTK_VER}"
if [[ ! -f ${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf} ]]; then
echo
eerror "Failed to find configuration ${wxconf}"
echo
die
fi
export WX_CONFIG="${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf}"
export WX_ECLASS_CONFIG="${WX_CONFIG}"
echo
einfo "Requested wxWidgets: ${1} ${WX_GTK_VER}"
einfo "Using wxWidgets: ${wxconf}"
echo
}
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