testing/inspircd: fix several issues with the package

- Avoid building modules with incompatible licenses (geo_maxmind,
  ssl_openssl).

- Stop building the regex_tre module as this module is deprecated
  and the dependencies for this are only available in testing.

- Build the ssl_gnutls (alt for ssl_openssl) and ldap modules.

- Manually enable extra modules and pass the -disable-auto-extras
  flag to prevent automatically enabling modules based on the
  libraries installed on the system.

- Pass --system to configure and only specify the paths which are
  not the default for a system-wide install.

- Give the build a distribution label to allow upstream to easily
  identify it.

- Disable building with rpaths; fixes an abuild warning.

- Remove some obsolete/incorrect comments.

testing/inspircd/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Alex Yam <alex@alexyam.com>
 pkgname=inspircd
 pkgver=3.13.0
-pkgrel=0
+pkgrel=1
 pkgdesc="internet relay chat daemon (ircd)"
 url="https://www.inspircd.org/"
 pkgusers="inspircd"
@@ -11,19 +11,17 @@ arch="all"
 license="GPL-2.0-or-later"
 makedepends="
 	argon2-dev
-	libmaxminddb-dev
+	gnutls-dev
 	libpq-dev
 	mariadb-dev
-	openssl-dev
+	openldap-dev
 	pcre-dev
 	perl
 	re2-dev
 	sqlite-dev
-	tre-dev
 	"
 subpackages="$pkgname-doc"
 options="!check" # no test suite
-		 # ./tools/test-build does configure and make test only (and is broken)
 source="$pkgname-$pkgver.tar.gz::https://github.com/inspircd/inspircd/archive/v$pkgver.tar.gz"
 
 # secfixes:
@@ -31,22 +29,20 @@ source="$pkgname-$pkgver.tar.gz::https://github.com/inspircd/inspircd/archive/v$
 #     - CVE-2021-33586
 
 build() {
-	# --manual-dir is set to /usr/share/man/man1 for inspircd.1.gz
 	./configure \
-		--prefix=/usr \
-		--binary-dir=/usr/bin \
-		--config-dir=/etc/inspircd \
-		--data-dir=/var/lib/inspircd/data \
-		--example-dir=/usr/share/inspircd/examples \
-		--log-dir=/var/log/inspircd \
-		--manual-dir=/usr/share/man/man1 \
-		--module-dir=/usr/lib/inspircd/modules \
-		--script-dir=/usr/lib/inspircd/scripts \
-		--socketengine=epoll \
-		--gid=inspircd \
-		--uid=inspircd \
-		--development
-	make
+		--enable-extras "argon2 ldap mysql pgsql regex_pcre regex_posix regex_re2 regex_stdlib sqlite3 ssl_gnutls sslrehashsignal"
+	./configure \
+		--binary-dir /usr/bin \
+		--data-dir /var/lib/inspircd/data \
+		--example-dir /usr/share/inspircd/examples \
+		--module-dir /usr/lib/inspircd/modules \
+		--script-dir /usr/lib/inspircd/scripts \
+		--disable-auto-extras \
+		--distribution-label alpine$pkgrel \
+		--gid inspircd \
+		--uid inspircd \
+		--system
+	INSPIRCD_DISABLE_RPATH=1 make
 }
 
 package() {