app-text/libexttextcat: fix LTO

* Use elibtoolize so -Werror=x gets passed down to the linker, not filtered
  by libtool

* Fix resulting -Werror=lto-type-mismatch

Signed-off-by: Sam James <sam@gentoo.org>

app-text/libexttextcat/files/libexttextcat-3.4.7-lto.patch

@@ -0,0 +1,36 @@
+https://github.com/LibreOffice/libexttextcat/pull/5
+
+From 96abcf3a68c7b3b089c256eb749e689879a61b10 Mon Sep 17 00:00:00 2001
+From: Alessandro Astone <alessandro.astone@canonical.com>
+Date: Fri, 28 Mar 2025 14:46:28 +0100
+Subject: [PATCH] Fix type mismatch between declaration and definition
+
+Compiling with LTO otherwise fails with:
+
+wg_mempool.h:91:18: error: type of 'wgmempool_Init' does not match original declaration [-Werror=lto-type-mismatch]
+   91 |     extern void *wgmempool_Init(uint4 blocksize, size_t maxstrsize);
+      |                  ^
+wg_mempool.c:86:14: note: type mismatch in parameter 1
+   86 | extern void *wgmempool_Init(size_t blocksize, size_t maxstrsize)
+      |              ^
+wg_mempool.c:86:14: note: type 'size_t' should match type 'uint4'
+wg_mempool.c:86:14: note: 'wgmempool_Init' was previously declared here
+wg_mempool.c:86:14: note: code may be misoptimized unless '-fno-strict-aliasing' is used
+---
+ src/wg_mempool.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/wg_mempool.c b/src/wg_mempool.c
+index 89d35a1..51ca894 100644
+--- a/src/wg_mempool.c
++++ b/src/wg_mempool.c
+@@ -83,7 +83,7 @@ static void addblock(mempool_t * h)
+ }
+ 
+ 
+-extern void *wgmempool_Init(size_t blocksize, size_t maxstrsize)
++extern void *wgmempool_Init(uint4 blocksize, size_t maxstrsize)
+ {
+     mempool_t *result = (mempool_t *) malloc(sizeof(mempool_t));
+ 
+

app-text/libexttextcat/libexttextcat-3.4.7-r1.ebuild

@@ -0,0 +1,35 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit libtool
+
+DESCRIPTION="Library implementing N-gram-based text categorization"
+HOMEPAGE="https://wiki.documentfoundation.org/Libexttextcat"
+SRC_URI="https://dev-www.libreoffice.org/src/${P}.tar.xz"
+
+LICENSE="BSD-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.4.7-lto.patch
+)
+
+src_prepare() {
+	default
+
+	# Needed for LTO flags to be passed down to the linker
+	elibtoolize
+}
+
+src_configure() {
+	econf \
+		--disable-werror
+}
+
+src_install() {
+	default
+	find "${ED}" -name '*.la' -delete || die
+}