dev-lua/lua-bit32: add libcompat52 version

Signed-off-by: Conrad Kostecki <conrad@kostecki.com>

dev-lua/lua-bit32/Manifest

@@ -1 +1,2 @@
+DIST lua-compat52-0.3.tar.gz 22407 BLAKE2B f8fa3aba2aab85b701c688a771e59b664c6541d1048c8e9d9a846e4458fffff451fba40f72f5e6d4310f533d860269e07f5135d3f44aa1b61de9755df8c2834a SHA512 b6b70162d5b25e3cc646613ee62a8f136903b4e0ae749285105429cce0e5d3eebc3295aa98749239651dd67d5ee55199172267cefb1588969093770a7e82ac96
 DIST lua-compat53-0.9.tar.gz 53599 BLAKE2B 7d9efe0afb49c40a68b1d6c28f975080b3331e07d0aa788e0f1f77d5c360504a5cac9cca4e6074b2c64aa7ad8934df3fe2609ff8009db52b046b2f639b670213 SHA512 bec15b6e95cb5cc775785515eba1f094e453059a0ba1eefa433d328b823378b7f48d9c7a34080ad77478cffb2008bead93418f809793afa6021e6046562acc58

dev-lua/lua-bit32/files/lua-bit32-5.3.0-add-tests.patch

@@ -0,0 +1,25 @@
+From 7e2b0b5e5f55cac22fbd9237bf1c354df134802c Mon Sep 17 00:00:00 2001
+From: Philipp Janda <siffiejoe@gmx.net>
+Date: Thu, 9 Jul 2020 01:24:17 +0200
+Subject: [PATCH] Add bit32 library
+
+---
+ tests/test-bit32.lua             |   9 ++
+ 1 file changed, 9 insertions(+)
+ create mode 100755 tests/test-bit32.lua
+
+diff --git a/tests/test-bit32.lua b/tests/test-bit32.lua
+new file mode 100755
+index 0000000..cc91e52
+--- /dev/null
++++ b/tests/test-bit32.lua
+@@ -0,0 +1,9 @@
++#!/usr/bin/env lua
++
++local bit32 = require("bit32")
++
++
++assert(bit32.bnot(0) == 2^32-1)
++assert(bit32.band(1, 3, 5) == 1)
++assert(bit32.bor(1, 3, 5) == 7)
++

dev-lua/lua-bit32/lua-bit32-5.3.0.ebuild

@@ -0,0 +1,50 @@
+# Copyright 2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit toolchain-funcs
+
+DESCRIPTION="Backported Lua bit manipulation library"
+HOMEPAGE="https://github.com/keplerproject/lua-compat-5.2"
+# Wierd upstream version descisions...
+# Result tarball may be reused for future lua-compat52 package
+LUA_COMPAT_V=0.3
+SRC_URI="https://github.com/keplerproject/lua-compat-5.2/archive/v${LUA_COMPAT_V}.tar.gz -> lua-compat52-${LUA_COMPAT_V}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
+IUSE="test"
+
+RESTRICT="!test? ( test )"
+
+# Strictly for lua 5.1
+DEPEND="dev-lang/lua:0="
+RDEPEND="${DEPEND}"
+BDEPEND="virtual/pkgconfig"
+
+S="${WORKDIR}/lua-compat-5.2-${LUA_COMPAT_V}"
+
+PATCHES=( "${FILESDIR}/${PN}-5.3.0-add-tests.patch" )
+
+src_compile() {
+	# TODO maybe sometime there will be luarocks eclass...
+	compile="$(tc-getCC) ${CFLAGS} ${LDFLAGS} -fPIC -I/usr/include -c lbitlib.c -o lbitlib.o -DLUA_COMPAT_BITLIB -Ic-api"
+	einfo "${compile}"
+	eval "${compile}" || die
+
+	link="$(tc-getCC) -shared ${LDFLAGS} -o bit32.so lbitlib.o"
+	einfo "${link}"
+	eval "${link}" || die
+}
+
+src_test() {
+	LUA_CPATH=./?.so lua tests/test-bit32.lua || die
+}
+
+src_install() {
+	exeinto $($(tc-getPKG_CONFIG) --variable INSTALL_CMOD lua)
+	doexe bit32.so
+	dodoc README.md
+}