Index: dymo-cups-drivers-1.2.0/configure.ac
===================================================================
--- dymo-cups-drivers-1.2.0.orig/configure.ac
+++ dymo-cups-drivers-1.2.0/configure.ac
@@ -87,9 +87,7 @@ AM_CONDITIONAL([SAMPLES], [test x$sample
 AC_SUBST(cups_cflags)
 
 warning_flags="-Wall -Wno-unknown-pragmas"
-debug_flags=""
-optimization_flags="-O2"
-CXXFLAGS="${optimization_flags} ${warning_flags} ${debug_flags} ${cups_cflags}"
+CXXFLAGS="${CXXFLAGS} ${warning_flags} ${debug_flags} ${cups_cflags}"
 
 
 AC_CHECK_LIB(cups, cupsMarkOptions, , AC_ERROR([Can't find cups library]))