http://lists.gnu.org/archive/html/bug-ed/2008-12/msg00001.html 2007-04-16 Mike Frysinger * Do not set CC/CXX/CPPFLAGS/LDFLAGS to "" so that user can override if they so choose. * Only set CFLAGS/CXXFLAGS if user did not specify any. ed had already taken GPLv3 when this patch out, so it should be GPLv3. Signed-off-by: Zhai Edwin Index: ed-1.5/configure =================================================================== --- ed-1.5.orig/configure 2010-08-30 07:34:49.000000000 -0700 +++ ed-1.5/configure 2010-11-20 16:42:20.490645823 -0800 @@ -26,10 +26,6 @@ mandir='$(datadir)/man' sysconfdir='$(prefix)/etc' program_prefix= -CC= -CPPFLAGS= -CFLAGS='-Wall -W -O2' -LDFLAGS= # Loop over all args while [ -n "$1" ] ; do @@ -105,6 +101,14 @@ esac done +# Defaults if the user did not select any +if [ x"${CFLAGS+set}" != xset ] ; then + CFLAGS='-Wall -W -O2' +fi +if [ x"${CXXFLAGS+set}" != xset ] ; then + CXXFLAGS='-Wall -W -O2' +fi + # Find the source files, if location was not specified. srcdirtext= if [ -z "${srcdir}" ] ; then