--- fotoxx-15.02.old/Makefile
+++ fotoxx-15.02/Makefile
@@ -3,24 +3,23 @@
 FOTOXX = fotoxx-15.02.cc
 
 # defaults for parameters that may be pre-defined
-CXXFLAGS += -Wall -ggdb
-LDFLAGS += -rdynamic
-PREFIX ?= /usr
 CPPFLAGS ?= -O2
+CXXFLAGS ?= -O2
+LDFLAGS  ?= -rdynamic
+PREFIX = __META_PREFIX__
 
 # target install directories
-BINDIR = $(PREFIX)/bin
-SHAREDIR = $(PREFIX)/share/fotoxx
-DATADIR = $(SHAREDIR)/data
-ICONDIR = $(SHAREDIR)/icons
-LOCALESDIR = $(SHAREDIR)/locales
-DOCDIR = $(PREFIX)/share/doc/fotoxx
-MANDIR = $(PREFIX)/share/man/man1
 APPDATADIR = $(PREFIX)/share/appdata
-MENUFILE = $(PREFIX)/share/applications/fotoxx.desktop
+BINDIR     = $(PREFIX)/bin
+DATADIR    = $(PREFIX)/data
+DOCDIR     = $(PREFIX)/doc
+MANDIR     = $(PREFIX)/man/man1
+SHAREDIR   = $(PREFIX)/share/fotoxx
+ICONDIR    = $(SHAREDIR)/icons
+LOCALESDIR = $(SHAREDIR)/locales
+MENUFILE   = $(PREFIX)/share/applications/fotoxx.desktop
 
 CFLAGS = $(CXXFLAGS) $(CPPFLAGS) -c `pkg-config --cflags gtk+-3.0`
-
 LIBS = `pkg-config --libs gtk+-3.0` -lpthread -ltiff -lpng -llcms2
 
 ALLFILES = fotoxx.o f.file.o f.gallery.o f.tools.o f.slideshow.o f.area.o f.metadata.o    \
@@ -105,5 +104,3 @@
 clean: 
 	rm -f  fotoxx
 	rm -f  *.o
- 
-