+ if \
+ $(CXX) conftest.o $(LDFLAGS) $(LDFLAGS_COMMON) $$5 $(LIBS_COMMON) $(LIBS) -o conftest >&3 $(STDERR_TO_STDOUT); \
+ then \
+ $(RM) conftest conftest.o conftest.d; \
+ $(ECHO) "found and links."; \
+ else \
+ $(RM) conftest.o conftest.d; \
+ $(ECHO) "found but does not link, please install it or set PKG_CONFIG_PATH right!"; \
+ $(ECHO) "To see the failed commands, set DEPENDENCIES_CHECK=verbose"; \
+ $(ECHO) "To proceed anyway, set DEPENDENCIES_CHECK=off"; \
+ failed=1; \
+ fi; \