Index: slepc/makefile
===================================================================
--- slepc.orig/makefile	2023-06-21 12:24:13.673635975 +0200
+++ slepc/makefile	2023-06-21 12:24:13.665635917 +0200
@@ -170,7 +170,7 @@
 allclean:
 	-@${OMAKE} -f gmakefile clean
 
-clean:: allclean
+clean: allclean
 
 reconfigure:
 	@unset MAKEFLAGS && ${PYTHON} ${PETSC_ARCH}/lib/slepc/conf/reconfigure-${PETSC_ARCH}.py
