Author: Daniel Baumann <daniel.baumann@progress-linux.org>
Description: Avoid overwriting build-environment.

diff -Naurp lunzip.orig/configure lunzip/configure
--- lunzip.orig/configure
+++ lunzip/configure
@@ -20,10 +20,10 @@ bindir='$(exec_prefix)/bin'
 datarootdir='$(prefix)/share'
 infodir='$(datarootdir)/info'
 mandir='$(datarootdir)/man'
-CC=gcc
-CPPFLAGS=
-CFLAGS='-Wall -W -O2'
-LDFLAGS=
+#CC=gcc
+#CPPFLAGS=
+#CFLAGS='-Wall -W -O2'
+#LDFLAGS=
 MAKEINFO=makeinfo
 
 # checking whether we are using GNU C.