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# This program source code file is part of KICAD, a free EDA CAD application.
#
# Copyright (C) 2013 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
# Copyright (C) 2013 Kicad Developers, see AUTHORS.txt for contributors.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you may find one here:
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# or you may search the http://www.gnu.org website for the version 2 license,
# or you may write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
# Downloads and builds LIBPNG
#-----<configure>----------------------------------------------------------------
set( LIBPNG_RELEASE 1.4.12 )
set( LIBPNG_MD5 849b14d88e1240a1b9f2cb39dd39701e ) # re-calc this on every RELEASE change
# The boost headers [and static libs if built] go here, at the top of KiCad
# source tree in boost_root.
set( LIBPNG_ROOT "${PROJECT_SOURCE_DIR}/libpng_root" )
#-----</configure>---------------------------------------------------------------
find_package( BZip2 REQUIRED )
set( PREFIX ${DOWNLOAD_DIR}/libpng )
if (APPLE)
if( CMAKE_OSX_ARCHITECTURES )
SET( LIBPNG_CFLAGS "CFLAGS=-arch ${CMAKE_OSX_ARCHITECTURES}")
endif( CMAKE_OSX_ARCHITECTURES )
endif(APPLE)
if (KICAD_BUILD_STATIC)
set(LIBPNG_OPTS --enable-static --disable-shared)
else()
set(LIBPNG_OPTS --enable-static --enable-shared)
endif(KICAD_BUILD_STATIC)
# <SOURCE_DIR> = ${PREFIX}/src/glew
# There is a Bazaar 'boost scratch repo' in <SOURCE_DIR>/boost and after committing pristine
# download, the patch is applied. This lets you regenerate a new patch at any time
# easily, simply by editing the working tree in <SOURCE_DIR> and doing "bzr diff" in there.
ExternalProject_Add( libpng
PREFIX "${PREFIX}"
DOWNLOAD_DIR "${DOWNLOAD_DIR}"
URL http://sourceforge.net/projects/libpng/files/libpng14/${LIBPNG_RELEASE}/libpng-${LIBPNG_RELEASE}.tar.bz2
URL_MD5 ${LIBPNG_MD5}
STAMP_DIR "${PREFIX}"
#SOURCE_DIR "${PREFIX}"
BUILD_IN_SOURCE 1
#PATCH_COMMAND "true"
CONFIGURE_COMMAND ./configure --prefix=${LIBPNG_ROOT} ${LIBPNG_OPTS} ${LIBPNG_CFLAGS} --disable-dependency-tracking
#BINARY_DIR "${PREFIX}"
UPDATE_COMMAND ${CMAKE_COMMAND} -E remove_directory "${LIBPNG_ROOT}"
BUILD_COMMAND $(MAKE)
INSTALL_DIR "${LIBPNG_ROOT}"
INSTALL_COMMAND $(MAKE) install
)
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