--- /dev/null
+diff --git a/configure.ac b/configure.ac
+index 067f9d0..fdbe2f8 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -13,8 +13,7 @@ AC_SUBST(OPENEXR_VERSION_API, ${OPENEXR_VERSION_MAJOR}_${OPENEXR_VERSION_MINOR})
+ AC_CANONICAL_HOST
+ AC_CONFIG_SRCDIR(IlmImfTest/main.cpp)
+ AC_CONFIG_HEADERS([config/OpenEXRConfig.h])
+-AM_INIT_AUTOMAKE(1.6.3) dnl Require automake 1.6.3 or better
+-AM_MAINTAINER_MODE
++AM_INIT_AUTOMAKE
+
+
+ LIBTOOL_CURRENT=24
+@@ -28,7 +27,7 @@ AC_PROG_CXX
+ AC_PROG_INSTALL
+ AC_PROG_CC
+ AC_PROG_LN_S
+-AC_PROG_LIBTOOL
++LT_INIT
+ AC_PROG_MAKE_SET
+
+ dnl
+@@ -58,8 +57,8 @@ AM_PATH_PKGCONFIG(
+ [ILMBASE])
+
+ dnl Define the version string
+-AC_DEFINE_UNQUOTED([OPENEXR_VERSION_STRING], "${VERSION}", [OpenEXR version string])
+-AC_DEFINE_UNQUOTED([OPENEXR_PACKAGE_STRING], "${PACKAGE_STRING}", [OpenEXR version string])
++AC_DEFINE_UNQUOTED([OPENEXR_VERSION_STRING], ["${VERSION}"], [OpenEXR version string])
++AC_DEFINE_UNQUOTED([OPENEXR_PACKAGE_STRING], ["${PACKAGE_STRING}"], [OpenEXR version string])
+ AC_DEFINE_UNQUOTED([OPENEXR_VERSION_MAJOR], [${OPENEXR_VERSION_MAJOR}], [OpenEXR version string])
+ AC_DEFINE_UNQUOTED([OPENEXR_VERSION_MINOR], [${OPENEXR_VERSION_MINOR}], [OpenEXR version string])
+ AC_DEFINE_UNQUOTED([OPENEXR_VERSION_PATCH], [${OPENEXR_VERSION_PATCH}], [OpenEXR version string])
+@@ -110,16 +109,7 @@ AC_ARG_ENABLE(threading,
+ [multithread="${enableval}"], [multithread=yes])
+
+ AS_IF([test "x${multithread}" != xno], [
+- ACX_PTHREAD(
+- [
+- AC_DEFINE(OPENEXR_IMF_HAVE_PTHREAD)
+- ILMBASE_LIBS="$PTHREAD_LIBS $ILMBASE_LIBS"
+- ILMBASE_CXXFLAGS="$ILMBASE_CXXFLAGS $PTHREAD_CFLAGS"
+- CC="$PTHREAD_CC"
+-
+- AM_POSIX_SEM()
+- ],
+- [AC_MSG_ERROR([POSIX thread support required])])
++ AX_PTHREAD
+
+ AC_DEFINE([OPENEXR_IMF_HAVE_PTHREAD], [1], [Define if pthreads are available])
+
+@@ -195,15 +185,6 @@ dnl AC_MSG_RESULT($complete_iomanip)
+ dnl AC_LANG_RESTORE
+ AC_DEFINE([OPENEXR_IMF_HAVE_COMPLETE_IOMANIP], [1], [Define when std::right is available])
+
+-AC_MSG_CHECKING(for gcc optimization flags)
+-old_cflags=$CFLAGS
+-CFLAGS="$CFLAGS -pipe"
+-AC_TRY_COMPILE([#include <stdio.h>],
+-[ printf ("hello, world"); ],
+-[ EXTRA_OPT_CFLAGS="-pipe"],[ EXTRA_OPT_CFLAGS=""])
+-CFLAGS=$old_cflags
+-AC_MSG_RESULT([$EXTRA_OPT_CFLAGS])
+-
+
+ dnl Check to see if the toolset supports AVX instructions in inline asm
+ AC_ARG_ENABLE([avx],
--- /dev/null
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools flag-o-matic toolchain-funcs multilib-minimal
+
+DESCRIPTION="ILM's OpenEXR high dynamic-range image file format libraries"
+HOMEPAGE="http://openexr.com/"
+SRC_URI="https://github.com/openexr/openexr/releases/download/v${PV}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0/24" # based on SONAME
+KEYWORDS="~amd64 -arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~x64-macos ~x86-solaris"
+IUSE="cpu_flags_x86_avx examples static-libs"
+
+RDEPEND="
+ >=media-libs/ilmbase-${PV}:=[${MULTILIB_USEDEP}]
+ sys-libs/zlib[${MULTILIB_USEDEP}]
+"
+DEPEND="${RDEPEND}
+ >=sys-devel/autoconf-archive-2016.09.16
+ virtual/pkgconfig[${MULTILIB_USEDEP}]
+"
+
+DOCS=( AUTHORS ChangeLog NEWS README.md )
+MULTILIB_WRAPPED_HEADERS=( /usr/include/OpenEXR/OpenEXRConfig.h )
+
+PATCHES=(
+ "${FILESDIR}/${PN}-2.2.0-fix-cpuid-on-abi_x86_32.patch"
+ "${FILESDIR}/${PN}-2.2.0-fix-config.h-collision.patch"
+ "${FILESDIR}/${PN}-2.2.0-Install-missing-header-files.patch"
+ "${FILESDIR}/${P}-fix-build-system.patch"
+)
+
+src_prepare() {
+ default
+ # Fix path for testsuite
+ sed -i -e "s:/var/tmp/:${T}:" IlmImfTest/tmpDir.h || die
+ eautoreconf
+}
+
+multilib_src_configure() {
+ local myeconfargs=(
+ --disable-imffuzztest
+ --disable-imfhugetest
+ --enable-threading
+ $(use_enable cpu_flags_x86_avx avx)
+ $(use_enable examples imfexamples)
+ $(use_enable static-libs static)
+ )
+
+ # TODO: check if this still applies on updates!
+ # internal tool dwaLookup fails to run when linked with gold linker
+ tc-ld-disable-gold
+
+ ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
+}
+
+multilib_src_install_all() {
+ einstalldocs
+
+ if use examples; then
+ docompress -x /usr/share/doc/${PF}/examples
+ else
+ rm -rf "${ED%/}"/usr/share/doc/${PF}/examples || die
+ fi
+
+ # package provides .pc files
+ find "${D}" -name '*.la' -delete || die
+}