media-libs/tiff-compat: Fix implicit declarations in configure

by regenerating it with autotools.
Drop blocker on tiff-4.4* - it was dropped two years ago
Also fix C23 compliance by adding AC_SYSTEM_EXTENSIONS and updating
config header templates, plus one stubborn source file.

Bug: https://bugs.gentoo.org/910693
Signed-off-by: NHOrus <jy6x2b32pie9@yahoo.com>
Closes: https://github.com/gentoo/gentoo/pull/40089
Signed-off-by: Sam James <sam@gentoo.org>

media-libs/tiff-compat/files/tiff-4.4.0-C23.patch

@@ -0,0 +1,52 @@
+https://bugs.gentoo.org/910693
+Fix implicit declarations by regenerating configure,
+Fix config header templates, manually define _GNU_SOURCE  when
+correct header was not cooperating
+--- a/configure.ac
++++ b/configure.ac
+@@ -29,6 +29,7 @@
+ AC_CONFIG_AUX_DIR(config)
+ AC_CONFIG_MACRO_DIR(m4)
+ AC_LANG(C)
++AC_USE_SYSTEM_EXTENSIONS
+ 
+ dnl Compute the canonical host (run-time) system type variable
+ AC_CANONICAL_HOST
+--- a/libtiff/tif_config.h.in
++++ b/libtiff/tif_config.h.in
+@@ -139,6 +139,11 @@
+ /* Support zstd compression */
+ #undef ZSTD_SUPPORT
+ 
++/* Enable GNU extensions on systems that have them.  */
++#ifndef _GNU_SOURCE
++# undef _GNU_SOURCE
++#endif
++
+ /* Enable large inode numbers on Mac OS X 10.5.  */
+ #ifndef _DARWIN_USE_64_BIT_INODE
+ # define _DARWIN_USE_64_BIT_INODE 1
+--- a/libtiff/tiffconf.h.in
++++ b/libtiff/tiffconf.h.in
+@@ -90,6 +90,11 @@
+ /* Support Deflate compression */
+ #undef ZIP_SUPPORT
+ 
++/* Enable GNU extensions on systems that have them.  */
++#ifndef _GNU_SOURCE
++# undef _GNU_SOURCE
++#endif
++
+ /* Support libdeflate enhanced compression */
+ #undef LIBDEFLATE_SUPPORT
+ 
+--- a/libtiff/mkg3states.c
++++ b/libtiff/mkg3states.c
+@@ -27,6 +27,7 @@
+  * in Frank Cringle's viewfax program;
+  *      Copyright (C) 1990, 1995  Frank D. Cringle.
+  */
++#define _GNU_SOURCE 1
+ #include "tif_config.h"
+ #include "libport.h"
+ 

media-libs/tiff-compat/tiff-compat-4.4.0-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -38,7 +38,6 @@ RDEPEND="
 	webp? ( media-libs/libwebp:=[${MULTILIB_USEDEP}] )
 	zlib? ( >=sys-libs/zlib-1.2.8-r1[${MULTILIB_USEDEP}] )
 	zstd? ( >=app-arch/zstd-1.3.7-r1:=[${MULTILIB_USEDEP}] )
-	!=media-libs/tiff-4.4*
 "
 DEPEND="${RDEPEND}"
 BDEPEND="verify-sig? ( sec-keys/openpgp-keys-evenrouault )"

media-libs/tiff-compat/tiff-compat-4.4.0-r2.ebuild

@@ -0,0 +1,95 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+QA_PKGCONFIG_VERSION="$(ver_cut 1-3)"
+
+# Release signer can vary per version but not clear if others will be doing
+# them in future, so gone with Even Rouault for now as he does other geosci
+# stuff too like PROJ, GDAL. Previous release manager of TIFF was
+# GraphicsMagick maintainer Bob Friesenhahn. Please be careful when verifying
+# who made releases.
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rouault.asc
+inherit multilib-minimal verify-sig flag-o-matic autotools
+
+MY_P="${P/_rc/rc}"
+DESCRIPTION="Tag Image File Format (TIFF) library (compat package for libtiff.so.5)"
+HOMEPAGE="http://libtiff.maptools.org"
+SRC_URI="https://download.osgeo.org/libtiff/${MY_P/-compat}.tar.xz"
+SRC_URI+=" verify-sig? ( https://download.osgeo.org/libtiff/${MY_P/-compat}.tar.xz.sig )"
+S="${WORKDIR}/${PN/-compat}-$(ver_cut 1-3)"
+
+LICENSE="libtiff"
+SLOT="4"
+if [[ ${PV} != *_rc* ]] ; then
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
+fi
+IUSE="+cxx jbig jpeg lzma test webp zlib zstd"
+RESTRICT="!test? ( test )"
+
+# bug #483132
+REQUIRED_USE="test? ( jpeg )"
+
+RDEPEND="
+	jbig? ( >=media-libs/jbigkit-2.1:=[${MULTILIB_USEDEP}] )
+	jpeg? ( media-libs/libjpeg-turbo:=[${MULTILIB_USEDEP}] )
+	lzma? ( >=app-arch/xz-utils-5.0.5-r1[${MULTILIB_USEDEP}] )
+	webp? ( media-libs/libwebp:=[${MULTILIB_USEDEP}] )
+	zlib? ( >=sys-libs/zlib-1.2.8-r1[${MULTILIB_USEDEP}] )
+	zstd? ( >=app-arch/zstd-1.3.7-r1:=[${MULTILIB_USEDEP}] )
+"
+DEPEND="${RDEPEND}"
+BDEPEND="verify-sig? ( sec-keys/openpgp-keys-evenrouault )"
+
+# Easier to keep this even though we remove the headers to avoid
+# triggering multilib header check
+MULTILIB_WRAPPED_HEADERS=(
+	/usr/include/tiffconf.h
+)
+
+PATCHES=(
+	"${FILESDIR}"/${PN/-compat}-4.4.0_rc1-skip-thumbnail-test.patch
+	"${FILESDIR}"/${P/-compat}-hylafaxplus-regression.patch
+	"${FILESDIR}"/${P/-compat}-C23.patch
+)
+
+src_prepare() {
+	default
+
+	# Added to fix cross-compilation and bug #910693
+	eautoreconf
+}
+
+multilib_src_configure() {
+	append-lfs-flags
+
+	local myeconfargs=(
+		--without-x
+		$(use_enable cxx)
+		$(use_enable jbig)
+		$(use_enable jpeg)
+		$(use_enable lzma)
+		$(use_enable webp)
+		$(use_enable zlib)
+		$(use_enable zstd)
+	)
+
+	ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
+
+	sed -i \
+		-e 's/ tools//' \
+		-e 's/ contrib//' \
+		-e 's/ man//' \
+		-e 's/ html//' \
+		Makefile || die
+}
+
+multilib_src_install_all() {
+	rm -r "${ED}"/usr/include || die
+	rm -r "${ED}"/usr/share || die
+	rm -r "${ED}"/usr/lib*/pkgconfig || die
+	rm -r "${ED}"/usr/lib*/*.so || die
+
+	find "${ED}" -type f -name '*.la' -delete || die
+}