x11/lumina does not build on sparc64 because the configure scripts use the
wrong compiler and fail. The problem is that the PATH variable does not
include the ports bin dir with the compiler links.

I came up with this diff which works for me.
I guess the pre-configure hunk is not needed since it only uses sed.
I'm a bit surprised that the PATH needs to be manually set like this.

-- 
:wq Claudio

Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/lumina/Makefile,v
diff -u -p -r1.41 Makefile
--- Makefile	14 Mar 2025 15:31:28 -0000	1.41
+++ Makefile	27 Jan 2026 12:47:38 -0000
@@ -42,11 +42,13 @@ FAKE_FLAGS=		INSTALL_ROOT=${DESTDIR}/
 NO_TEST=		Yes
 
 pre-configure:
+	@PATH=${PORTPATH};			\
 	sed -i -e "s,!!LOCALBASE!!,${LOCALBASE}," \
 		-e "s,!!SYSCONFDIR!!,${SYSCONFDIR}," \
 		${WRKSRC}/src-qt5/OS-detect.pri
 
 do-configure:
+	@PATH=${PORTPATH};			\
 	cd ${WRKSRC} && ${LOCALBASE}/bin/qmake-qt5 \
 		CONFIG+="configure WITH_I18N NO_XINPUT"