--- makefile.orig	2018-08-12 04:41:58 UTC
+++ makefile
@@ -1,7 +1,7 @@
-SHELL=/bin/bash
-CFLAGS=--std=c99
+SHELL=/bin/sh
+XCCFLAGS=$(foreach arg,$(CFLAGS),--Xcc=$(arg))
 
-prefix=/usr
+prefix=$(PREFIX)
 bindir=$(prefix)/bin
 sharedir=$(prefix)/share
 localedir=$(sharedir)/locale
@@ -43,7 +43,7 @@ app-gtk:
 
 	#polo-gtk
 	valac -X -D'GETTEXT_PACKAGE="${app_name}"' \
-		--Xcc="-lm" ${define_symbols} --Xcc="-O3" --thread \
+		--Xcc="-lm" ${define_symbols} ${XCCFLAGS} -v --thread \
 		Common/Main.vala \
 		Gtk/*.vala \
 		Utility/*.vala \
@@ -60,7 +60,7 @@ app-util-gtk3:
 
 app-util-disk:
 	valac --Xcc="-lm" -X -D'GETTEXT_PACKAGE="${app_name}"' \
-		"polo-disk.vala" Console/*.vala --Xcc="-O3" -o polo-disk --pkg posix --pkg gio-unix-2.0 --pkg gee-0.8
+		"polo-disk.vala" Console/*.vala ${XCCFLAGS} -v -o polo-disk --pkg posix --pkg gio-unix-2.0 --pkg gee-0.8
 
 app-translations:
 
@@ -101,17 +101,15 @@ install:
 	mkdir -p "$(DESTDIR)$(sharedir)/${app_name}"
 	mkdir -p "$(DESTDIR)$(sharedir)/pixmaps"
 	mkdir -p "$(DESTDIR)$(sharedir)/appdata"
-	mkdir -p "$(DESTDIR)/var/log/polo"
 	
 	#binary
 	install -m 0755 ${app_name}-gtk "$(DESTDIR)$(bindir)"
 	install -m 0755 ${app_name}-gtk3-helper "$(DESTDIR)$(bindir)"
 	install -m 0755 ${app_name}-disk "$(DESTDIR)$(bindir)"
-	install -m 0755 ${app_name}-uninstall "$(DESTDIR)$(bindir)"
 
 	#shared files
-	cp -dpr --no-preserve=ownership -t "$(DESTDIR)$(sharedir)/${app_name}" ./share/${app_name}/*
-	chmod --recursive 0755 $(DESTDIR)$(sharedir)/${app_name}/*
+	cp -Ppr share/${app_name}/* "$(DESTDIR)$(sharedir)/${app_name}"
+	chmod -R 0755 $(DESTDIR)$(sharedir)/${app_name}/*
 	chmod a+x $(DESTDIR)$(sharedir)/${app_name}/files/gtk-theme/install-gtk-theme
 
 	#launcher