MT#55283 support native libmariadb

closes #2036

Change-Id: I24066ceb5abd2a289002243615a2875febe4fd82
(cherry picked from commit 999547676a)

utils/gen-common-flags

@@ -92,7 +92,6 @@ gen-pkgconf-flags OPENSSL             openssl
 gen-pkgconf-flags OPUS                opus
 gen-pkgconf-flags SPANDSP             spandsp
 gen-pkgconf-flags LIBJWT              libjwt
-gen-pkgconf-flags MYSQL               mysqlclient
 gen-pkgconf-flags LIBHIREDIS          hiredis
 gen-pkgconf-flags LIBPCAP             libpcap
 
@@ -112,3 +111,10 @@ if pkg-config --atleast-version=2.3 liburing; then
   gen-pkgconf-flags LIBURING liburing
   echo "CFLAGS_LIBURING += -DHAVE_LIBURING"
 fi
+
+# alternative MySQL/MariaDB
+if pkg-config --exists libmariadb; then
+  gen-pkgconf-flags MYSQL libmariadb
+else
+  gen-pkgconf-flags MYSQL mysqlclient
+fi