LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
LDFLAGS="$(LDFLAGS) $${flags}" \
DESTDIR="$(DESTDIR)" \
+ INSTALL="$(INSTALL)" \
+ INSTALL_DATA="$(INSTALL_DATA)" \
+ INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
+ INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
$(DO)); then \
true; \
else \