dev-db/mariadb: port systemtap w/o dtrace-symlink fix

We missed to port the fix to mariadb-10.6.{15,20,21} which also fail to
build if systemtap is build w/o dtrace-symlink. The fix is ported from
commit 505a3759e9 ("dev-db/mariadb: fix build failed").

Bug: https://bugs.gentoo.org/943306
Signed-off-by: Petr Vaněk <arkamar@gentoo.org>

dev-db/mariadb/mariadb-10.6.15.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="8"
@@ -365,6 +365,12 @@ src_configure() {
 		mycmakeargs+=( -DWITH_SSL=bundled )
 	fi
 
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
+		mycmakeargs+=(
+			-DDTRACE="${BROOT}"/usr/bin/stap-dtrace
+		)
+	fi
+
 	# bfd.h is only used starting with 10.1 and can be controlled by NOT_FOR_DISTRIBUTION
 	mycmakeargs+=(
 		-DWITH_READLINE=$(usex bindist 1 0)

dev-db/mariadb/mariadb-10.6.20.ebuild

@@ -368,6 +368,12 @@ src_configure() {
 		mycmakeargs+=( -DWITH_SSL=bundled )
 	fi
 
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
+		mycmakeargs+=(
+			-DDTRACE="${BROOT}"/usr/bin/stap-dtrace
+		)
+	fi
+
 	# bfd.h is only used starting with 10.1 and can be controlled by NOT_FOR_DISTRIBUTION
 	mycmakeargs+=(
 		-DWITH_READLINE=$(usex bindist 1 0)

dev-db/mariadb/mariadb-10.6.21.ebuild

@@ -368,6 +368,12 @@ src_configure() {
 		mycmakeargs+=( -DWITH_SSL=bundled )
 	fi
 
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
+		mycmakeargs+=(
+			-DDTRACE="${BROOT}"/usr/bin/stap-dtrace
+		)
+	fi
+
 	# bfd.h is only used starting with 10.1 and can be controlled by NOT_FOR_DISTRIBUTION
 	mycmakeargs+=(
 		-DWITH_READLINE=$(usex bindist 1 0)