Ports: Add port for pcre

Ports/AvailablePorts.md

@@ -81,6 +81,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`openssl`](openssl/)          | OpenSSL                                       | 1.0.2             | https://www.openssl.org/                              |
 | [`oksh`](oksh/)                | oksh                                          | 6.8.1             | https://github.com/ibara/oksh                         |
 | [`patch`](patch/)              | patch (OpenBSD)                               | 6.6               | https://github.com/ibara/libpuffy                     |
+| [`pcre`](pcre/)                | Perl-compatible Regular Expressions (PCRE)    | 8.44              | https://www.pcre.org/                                 |
 | [`pcre2`](pcre2/)              | Perl-compatible Regular Expressions (PCRE2)   | 10.34             | https://www.pcre.org/                                 |
 | [`pkgconf`](pkgconf/)          | pkgconf                                       | 1.7.3             | https://github.com/pkgconf/pkgconf                    |
 | [`SDLPoP`](SDLPoP/)            | Prince of Persia game                         |                   | https://github.com/NagyD/SDLPoP                       |

Ports/pcre/package.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=pcre
+version=8.44
+useconfigure=true
+files="https://ftp.pcre.org/pub/pcre/pcre-${version}.tar.gz pcre-${version}.tar.gz
+https://ftp.pcre.org/pub/pcre/pcre-${version}.tar.gz.sig pcre-${version}.tar.gz.sig"
+
+auth_type="sig"
+auth_import_key="45F68D54BBE23FB3039B46E59766E084FB0F43D8"
+auth_opts="pcre-${version}.tar.gz.sig"

Ports/pcre/patches/fix-autoconf.patch

@@ -0,0 +1,12 @@
+diff -Naur pcre-8.44/config.sub pcre-8.44.serenity/config.sub
+--- pcre-8.44/config.sub	2020-02-12 18:17:31.000000000 +0100
++++ pcre-8.44.serenity/config.sub	2021-04-12 01:21:59.467797075 +0200
+@@ -1390,7 +1390,7 @@
+ 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+ 	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \
+ 	      | -onefs* | -tirtos* | -phoenix* | -fuchsia* | -redox* | -bme* \
+-	      | -midnightbsd*)
++	      | -midnightbsd* | -serenity*)
+ 	# Remember, each alternative MUST END IN *, to match a version number.
+ 		;;
+ 	-qnx*)

Ports/pcre/patches/fix-rlimit.patch

@@ -0,0 +1,12 @@
+diff -Naur pcre-8.44/pcretest.c pcre-8.44.serenity/pcretest.c
+--- pcre-8.44/pcretest.c	2020-02-11 18:28:46.000000000 +0100
++++ pcre-8.44.serenity/pcretest.c	2021-04-12 01:23:25.182873375 +0200
+@@ -3168,7 +3168,7 @@
+       ((stack_size = get_value((pcre_uint8 *)argv[op+1], &endptr)),
+         *endptr == 0))
+     {
+-#if defined(_WIN32) || defined(WIN32) || defined(__minix) || defined(NATIVE_ZOS) || defined(__VMS)
++#if defined(_WIN32) || defined(WIN32) || defined(__minix) || defined(NATIVE_ZOS) || defined(__VMS) || defined(__serenity__)
+     printf("PCRE: -S not supported on this OS\n");
+     exit(1);
+ #else