Use install instead of cp for install purposes.

The install utility will set the proper permissions for the file
at hand while cp just sets the permissions at the destination
it gets from the original file - which might be totally wrong
depending on the users' umask.

Signed-off-by: Henner Zeller <h.zeller@acm.org>

Makefile_plugin.common

@@ -48,8 +48,7 @@ $(NAME).so: $(OBJS)
 	$(CXX) $(CXXFLAGS) $(LDFLAGS) -shared -o $@ $^ $(LDLIBS)
 
 install_plugin: $(NAME).so
-	mkdir -p $(PLUGINS_DIR)
-	cp $< $(PLUGINS_DIR)/$<
+	install -D $< $(PLUGINS_DIR)/$<
 
 test:
 	$(MAKE) -C tests all

xdc-plugin/Makefile

@@ -4,7 +4,6 @@ include ../Makefile_plugin.common
 VERILOG_MODULES = BANK.v
 
 install_modules: $(VERILOG_MODULES)
-	mkdir -p $(PLUGINS_DIR)/fasm_extra_modules/
-	cp $< $(PLUGINS_DIR)/fasm_extra_modules/$<
+	install -D $< $(PLUGINS_DIR)/fasm_extra_modules/$<
 
 install: install_modules