[PR PATCH] gifsicle: switch upstream, build gifview

[cinerea0 <cinerea0@users.noreply.github.com>]

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There is a new pull request by cinerea0 against master on the void-packages repository

https://github.com/cinerea0/void-packages gif
https://github.com/void-linux/void-packages/pull/33882

gifsicle: switch upstream, build gifview
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#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [x] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

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A patch file from https://github.com/void-linux/void-packages/pull/33882.patch is attached

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From 526dad147906da6b709e66377e40db908611cee5 Mon Sep 17 00:00:00 2001
From: cinerea0 <cinerea0@disroot.org>
Date: Wed, 3 Nov 2021 19:38:11 -0400
Subject: [PATCH] gifsicle: switch upstream, build gifview

---
 srcpkgs/gifsicle/template | 13 +++++--------
 srcpkgs/gifsicle/update   |  2 ++
 2 files changed, 7 insertions(+), 8 deletions(-)
 create mode 100644 srcpkgs/gifsicle/update

diff --git a/srcpkgs/gifsicle/template b/srcpkgs/gifsicle/template
index d466886ae54e..3cddf6dc77ef 100644
--- a/srcpkgs/gifsicle/template
+++ b/srcpkgs/gifsicle/template
@@ -1,19 +1,16 @@
 # Template file for 'gifsicle'
 pkgname=gifsicle
 version=1.93
-revision=2
+revision=3
 build_style=gnu-configure
-hostmakedepends="automake libtool pkg-config"
+makedepends="libX11-devel"
 short_desc="Command-line tool for information about GIF images"
 maintainer="cinerea0 <cinerea0@protonmail.com>"
 license="GPL-2.0-or-later"
 homepage="http://www.lcdf.org/gifsicle/"
-distfiles="https://github.com/kohler/gifsicle/archive/refs/tags/v${version}.tar.gz"
-checksum=941c0b1c3ebc748949a0d14363f0fb3c9d2c06ee122b3548315b9233eb956d88
-
-pre_configure() {
-	autoreconf -fi
-}
+changelog="https://www.lcdf.org/gifsicle/changes.html"
+distfiles="${homepage}/gifsicle-${version}.tar.gz"
+checksum=92f67079732bf4c1da087e6ae0905205846e5ac777ba5caa66d12a73aa943447
 
 Gifsicle_package() {
 	depends="gifsicle"
diff --git a/srcpkgs/gifsicle/update b/srcpkgs/gifsicle/update
new file mode 100644
index 000000000000..4ecd4d7c083e
--- /dev/null
+++ b/srcpkgs/gifsicle/update
@@ -0,0 +1,2 @@
+site="https://www.lcdf.org/gifsicle/changes.html"
+pattern='<b>\K[0-9\.]+(?=</b>)'