makefile library access

[arango]

There is a problem in the makefile and the application-dependent compilation options from file make_macros.mk. This one is a little bit tricky and affect the order of configuration files included in the makefile. It turns out that the file make_macros.mk needs to be included first before the dependencies are generated and included. Thsi implies that the application-dependent CPP flags need to be set-up earlier because they are needed to create configuration file make_macros.mk.