dev-util/gpp: new package, add 2.27

Signed-off-by: Kenton Groombridge <concord@gentoo.org>

dev-util/gpp/Manifest

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+DIST gpp-2.27.tar.gz 66226 BLAKE2B 18490dae11fa295c6a038c6de86919a9b37a10c6008490bd554f11e52916e92e80238bb858c799fa1345419a56b37f9f817cd9c8d0fe221bd8c51b3d12245fb1 SHA512 ad7eaf89796208668143c160bfe764d5b38fb734dfa29869d2b222ce4c1982e8f5eef679960645de51c7d4fda6a18cac4ded55334a62cd16698a42b89aebf71e

dev-util/gpp/gpp-2.27.ebuild

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+# Copyright 2021-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools
+
+DESCRIPTION="A generic preprocessor"
+HOMEPAGE="https://logological.org/gpp https://github.com/logological/gpp"
+SRC_URI="https://github.com/logological/${PN}/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="LGPL-3+"
+SLOT="0"
+KEYWORDS="~amd64"
+
+src_prepare() {
+	default
+	eautoreconf
+}

dev-util/gpp/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<name>Kenton Groombridge</name>
+		<email>concord@gentoo.org</email>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">logological/gpp</remote-id>
+		<bugs-to>https://github.com/logological/gpp/issues</bugs-to>
+	</upstream>
+	<longdescription>
+		GPP is a general-purpose preprocessor with customizable syntax, suitable for
+		a wide range of preprocessing tasks. Its independence from any one
+		programming language makes it much more versatile than the C preprocessor
+		(cpp), while its syntax is lighter and more flexible than that of GNU m4.
+		There are built-in macros for use with C/C++, LaTeX, HTML, XHTML, and Prolog
+		files.
+	</longdescription>
+</pkgmetadata>