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

diff -Naurp tarlz.orig/configure tarlz/configure
--- tarlz.orig/configure
+++ tarlz/configure
@@ -20,10 +20,10 @@ bindir='$(exec_prefix)/bin'
 datarootdir='$(prefix)/share'
 infodir='$(datarootdir)/info'
 mandir='$(datarootdir)/man'
-CXX=g++
-CPPFLAGS=
-CXXFLAGS='-Wall -W -O2'
-LDFLAGS=
+#CXX=g++
+#CPPFLAGS=
+#CXXFLAGS='-Wall -W -O2'
+#LDFLAGS=
 LIBS='-llz -lpthread'
 
 # checking whether we are using GNU C++.