package/mariadb: needs pcre2

Upstream added the possibility to build with system-provided pcre2 back
in 2014:
    https://github.com/MariaDB/server/commit/016bd4fc5fff311dc4091b3b7329cd980dbaa14b

The policy in Buildroot is to use system-provided libraries rather than
bundled ones, but we missed that opportunity when we introduced mariadb
back in 2016, with commit 2cd86cdbfcde (mariadb: new package).

Fix that now.

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/mariadb/mariadb.mk

@@ -21,12 +21,14 @@ MARIADB_DEPENDENCIES = \
 	fmt \
 	ncurses \
 	openssl \
+	pcre2 \
 	zlib \
 	libaio \
 	libxml2
 
 MARIADB_CONF_OPTS += \
-	-DWITH_FMT=system
+	-DWITH_FMT=system \
+	-DWITH_PCRE=system
 
 # use bundled GPL-2.0+ licensed readline as package/readline is GPL-3.0+
 MARIADB_CONF_OPTS += -DWITH_READLINE=ON

package/mysql/Config.in

@@ -25,6 +25,7 @@ config BR2_PACKAGE_MARIADB
 	select BR2_PACKAGE_FMT
 	select BR2_PACKAGE_NCURSES
 	select BR2_PACKAGE_OPENSSL
+	select BR2_PACKAGE_PCRE2
 	select BR2_PACKAGE_HAS_MYSQL
 	help
 	  MariaDB is one of the most popular database servers in the