media-libs/libxmi: update EAPI 7 -> 8, fix build

Closes: https://bugs.gentoo.org/94445
Closes: https://bugs.gentoo.org/899832
Signed-off-by: Alexey Sokolov <alexey+gentoo@asokolov.org>
Closes: https://github.com/gentoo/gentoo/pull/41200
Signed-off-by: Sam James <sam@gentoo.org>

media-libs/libxmi/files/libxmi-1.3-gcc15.patch

@@ -0,0 +1,12 @@
+https://bugs.gentoo.org/944450
+
+--- a/sys-defines.h
++++ b/sys-defines.h
+@@ -169,7 +169,6 @@ extern __C_LINKAGE void free (void * ptr);
+ #ifndef __cplusplus
+ #ifndef HAVE_BOOL_IN_CC
+ #ifdef __STDC__
+-typedef enum { false = 0, true = 1 } bool;
+ #else  /* not __STDC__, do things the old-fashioned way */
+ typedef int bool;
+ #define false 0

media-libs/libxmi/files/libxmi-1.3-implicit.patch

@@ -0,0 +1,13 @@
+https://bugs.gentoo.org/899832
+
+--- a/configure.in
++++ b/configure.in
+@@ -77,7 +77,7 @@ int main()
+   int i;
+   for (i=0; i < B; i++)
+     Array[[i]] = i - 3;
+-  exit (Array[[1]] != -2);
++  return (Array[[1]] != -2);
+ }],
+     ac_cv_c_gcc_strength_bug="no",
+     ac_cv_c_gcc_strength_bug="yes",

media-libs/libxmi/libxmi-1.3-r2.ebuild

@@ -0,0 +1,32 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools
+
+DESCRIPTION="C/C++ function library for rasterizing 2-D vector graphics"
+HOMEPAGE="https://www.gnu.org/software/libxmi/"
+SRC_URI="https://dev.gentoo.org/~jlec/distfiles/${P}.tar.xz"
+#mirror://gnu/${PN}/${P}.tar.gz"
+# Version unbundled from plotutils
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
+
+PATCHES=(
+	"${FILESDIR}/${P}-gcc15.patch"
+	"${FILESDIR}/${P}-implicit.patch"
+)
+
+src_prepare() {
+	default
+	mv configure.in configure.ac || die
+	eautoreconf
+}
+
+src_install() {
+	default
+	find "${ED}" -name '*.la' -delete || die
+}