diff -up gpac/Makefile.timestramps gpac/Makefile
--- gpac/Makefile.timestramps	2008-02-17 15:34:31.000000000 +0100
+++ gpac/Makefile	2008-02-17 15:36:34.000000000 +0100
@@ -54,8 +54,8 @@ install:
 	$(MAKE) -C applications install
 	install -d "$(DESTDIR)$(moddir)"
 	install bin/gcc/*.$(DYN_LIB_SUFFIX) "$(DESTDIR)$(moddir)"
-	rm -f $(DESTDIR)$(moddir)/libgpac.$(DYN_LIB_SUFFIX)
-	rm -f $(DESTDIR)$(moddir)/nposmozilla.$(DYN_LIB_SUFFIX)
+	#rm -f $(DESTDIR)$(moddir)/libgpac.$(DYN_LIB_SUFFIX)
+	#rm -f $(DESTDIR)$(moddir)/nposmozilla.$(DYN_LIB_SUFFIX)
 ifeq ($(CONFIG_WIN32),yes)
 	install $(INSTFLAGS) -m 755 bin/gcc/libgpac.dll $(prefix)/lib
 else
@@ -73,11 +73,11 @@ endif
 endif
 	install -d "$(DESTDIR)$(mandir)"
 	install -d "$(DESTDIR)$(mandir)/man1"
-	install -m 644 doc/man/mp4box.1 $(DESTDIR)$(mandir)/man1/
-	install -m 644 doc/man/mp4client.1 $(DESTDIR)$(mandir)/man1/
-	install -m 644 doc/man/gpac.1 $(DESTDIR)$(mandir)/man1/
+	install -pm 644 doc/man/mp4box.1 $(DESTDIR)$(mandir)/man1/
+	install -pm 644 doc/man/mp4client.1 $(DESTDIR)$(mandir)/man1/
+	install -pm 644 doc/man/gpac.1 $(DESTDIR)$(mandir)/man1/
 	install -d "$(DESTDIR)$(prefix)/share/gpac"
-	install -m 644 doc/gpac.mp4 $(DESTDIR)$(prefix)/share/gpac/
+	install -pm 644 doc/gpac.mp4 $(DESTDIR)$(prefix)/share/gpac/
 
 uninstall:
 	$(MAKE) -C applications uninstall
@@ -92,11 +92,11 @@ uninstall:
 
 install-lib:
 	mkdir -p "$(DESTDIR)$(prefix)/include/gpac"
-	install -m 644 $(SRC_PATH)/include/gpac/*.h "$(DESTDIR)$(prefix)/include/gpac"
+	install -pm 644 $(SRC_PATH)/include/gpac/*.h "$(DESTDIR)$(prefix)/include/gpac"
 	mkdir -p "$(DESTDIR)$(prefix)/include/gpac/internal"
-	install -m 644 $(SRC_PATH)/include/gpac/internal/*.h "$(DESTDIR)$(prefix)/include/gpac/internal"
+	install -pm 644 $(SRC_PATH)/include/gpac/internal/*.h "$(DESTDIR)$(prefix)/include/gpac/internal"
 	mkdir -p "$(DESTDIR)$(prefix)/include/gpac/modules"
-	install -m 644 $(SRC_PATH)/include/gpac/modules/*.h "$(DESTDIR)$(prefix)/include/gpac/modules"
+	install -pm 644 $(SRC_PATH)/include/gpac/modules/*.h "$(DESTDIR)$(prefix)/include/gpac/modules"
 	mkdir -p "$(DESTDIR)$(prefix)/lib"
 	install -m 644 "./bin/gcc/libgpac_static.a" "$(DESTDIR)$(libdir)"