dnl keep track of the environment set by the user
libfirm_conf_env="${CC+CC='$CC'} ${CFLAGS+CFLAGS='$CFLAGS'} ${CPP+CPP='$CPP'} ${CPPFLAGS+CPPFLAGS='$CPPFLAGS'} ${LDFLAGS+LDFLAGS='$LDFLAGS'} ${LIBS+LIBS='$LIBS'}"
AC_SUBST(libfirm_conf_env)
dnl keep track of the environment set by the user
libfirm_conf_env="${CC+CC='$CC'} ${CFLAGS+CFLAGS='$CFLAGS'} ${CPP+CPP='$CPP'} ${CPPFLAGS+CPPFLAGS='$CPPFLAGS'} ${LDFLAGS+LDFLAGS='$LDFLAGS'} ${LIBS+LIBS='$LIBS'}"
AC_SUBST(libfirm_conf_env)
AC_ARG_ENABLE(debug,
[ --enable-debug enable assertions and additional debugging routines],
[if test "$enableval" = yes; then
AC_ARG_ENABLE(debug,
[ --enable-debug enable assertions and additional debugging routines],
[if test "$enableval" = yes; then