--- Makefile.orig	2021-09-14 16:35:03 UTC
+++ Makefile
@@ -92,7 +92,7 @@ openlibm.pc: openlibm.pc.in Make.inc Makefile
 
 install-static: libopenlibm.a
 	mkdir -p $(DESTDIR)$(libdir)
-	cp -RpP -f libopenlibm.a $(DESTDIR)$(libdir)/
+	$(BSD_INSTALL_DATA) libopenlibm.a $(DESTDIR)$(libdir)/
 
 install-shared: libopenlibm.$(OLM_MAJOR_MINOR_SHLIB_EXT)
 	mkdir -p $(DESTDIR)$(shlibdir)
@@ -101,16 +101,16 @@ ifeq ($(OS), WINNT)
 	cp -RpP -f libopenlibm.*$(SHLIB_EXT) $(DESTDIR)$(shlibdir)/
 	cp -RpP -f libopenlibm.*$(SHLIB_EXT).a $(DESTDIR)$(libdir)/
 else
-	cp -RpP -f libopenlibm.*$(SHLIB_EXT)* $(DESTDIR)$(shlibdir)/
+	$(BSD_INSTALL_LIB) libopenlibm.*$(SHLIB_EXT)* $(DESTDIR)$(shlibdir)/
 endif
 
 install-pkgconfig: openlibm.pc
 	mkdir -p $(DESTDIR)$(pkgconfigdir)
-	cp -RpP -f openlibm.pc $(DESTDIR)$(pkgconfigdir)/
+	$(BSD_INSTALL_DATA) openlibm.pc $(DESTDIR)$(pkgconfigdir)/
 
 install-headers:
 	mkdir -p $(DESTDIR)$(includedir)/openlibm
-	cp -RpP -f include/*.h $(DESTDIR)$(includedir)/openlibm
-	cp -RpP -f src/*.h $(DESTDIR)$(includedir)/openlibm
+	$(BSD_INSTALL_DATA) include/*.h $(DESTDIR)$(includedir)/openlibm
+	$(BSD_INSTALL_DATA) src/*.h $(DESTDIR)$(includedir)/openlibm
 
 install: install-static install-shared install-pkgconfig install-headers