Add optional MongoDB support as postfix-mongodb, available as of Postfix 3.9.

See https://www.postfix.org/MONGODB_README.html

PKGBUILD

@@ -6,7 +6,7 @@
 pkgbase=postfix
 pkgname=(
   postfix
-  postfix-{cdb,ldap,lmdb,mysql,pcre,pgsql,sqlite}
+  postfix-{cdb,ldap,lmdb,mongodb,mysql,pcre,pgsql,sqlite}
 )
 pkgver=3.8.6
 pkgrel=1
@@ -26,6 +26,7 @@ makedepends=(
   libsasl
   lmdb
   mariadb-libs
+  mongo-c-driver
   openssl
   pcre2
   postgresql-libs
@@ -78,6 +79,7 @@ build() {
     '-DUSE_LDAP_SASL'
     '-DHAS_LMDB'
     '-DUSE_TLS'
+    '-DHAS_MONGODB' '-I/usr/include/libmongoc-1.0' '-I/usr/include/libbson-1.0'
     '-DHAS_MYSQL' '-I/usr/include/mysql'
     '-DHAS_PCRE=2'
     '-DHAS_PGSQL' '-I/usr/include/postgresql'
@@ -100,6 +102,7 @@ build() {
     AUXLIBS_LDAP='-lldap -llber'
     AUXLIBS_LMDB="$(pkgconf --libs lmdb)"
     AUXLIBS_PCRE="$(pcre2-config --libs8)"
+    AUXLIBS_MONGODB="$(pkgconf --libs libmongoc-1.0)"
     AUXLIBS_MYSQL="$(pkgconf --libs mariadb)"
     AUXLIBS_PGSQL="$(pkgconf --libs libpq)"
     AUXLIBS_SQLITE="$(pkgconf --libs sqlite3)"
@@ -133,6 +136,7 @@ package_postfix() {
     'postfix-cdb: for CDB integration'
     'postfix-ldap: for LDAP integration'
     'postfix-lmdb: for LMDB integration'
+    'postfix-mongodb: for MongoDB integration'
     'postfix-mysql: for MySQL integration'
     'postfix-pcre: for PCRE integration'
     'postfix-pgsql: for PostgreSQL integration'
@@ -169,7 +173,7 @@ package_postfix() {
 
   # create dynamicmaps.cf.d and postfix-files.d entries for split packages
   # remove targetted files from main configuration files
-  for _feature in {cdb,ldap,lmdb,mysql,pcre,pgsql,sqlite}; do
+  for _feature in {cdb,ldap,lmdb,mongodb,mysql,pcre,pgsql,sqlite}; do
     printf "Split out dynamicmaps file for %s\n" $pkgbase-$_feature
     grep "$pkgbase-$_feature" "$_dynamicmaps_file" > "$_dynamicmaps_dir/$pkgbase-$_feature.cf"
     sed -e "/$pkgbase-$_feature/d" -i "$_dynamicmaps_file"
@@ -244,6 +248,17 @@ package_postfix-lmdb() {
   install -vDm 644 $pkgbase-$pkgver/{LICENSE,COPYRIGHT} -t "$pkgdir/usr/share/licenses/$pkgname/"
 }
 
+package_postfix-mongodb() {
+  depends+=(
+    mongo-c-driver
+    postfix
+  )
+  pkgdesc+=' (MongoDB integration)'
+
+  mv -v $pkgname/* "$pkgdir"
+  install -vDm 644 $pkgbase-$pkgver/{LICENSE,COPYRIGHT} -t "$pkgdir/usr/share/licenses/$pkgname/"
+}
+
 package_postfix-mysql() {
   depends+=(
     mariadb-libs libmariadb.so