| This provides a set of top-level makefiles to build variants of the Osmocom |
| source trees. It is inteded for the core network components and related |
| projects, but works generically. |
| |
| The idea is to have all your Osmocom git clones in ./src, while keeping one or |
| more separate build trees in ./make-*. |
| |
| Run ./gen_makefile.py with a choice of projects (2G only or also 3G?) |
| and a choice of configure options, for example: |
| |
| ./gen_makefile.py 3G+2G.deps default.opts iu.opts |
| |
| This generates a new dir containing a Makefile. When you run make in it, this |
| will clone the source trees (if not present yet) and build all of them in the |
| right order: |
| |
| cd make-3G+2G-default+iu |
| make |
| |
| If you make modifications in one of the source trees, this Makefile will pick |
| it up, rebuild the project and also rebuild all dependencies (according to the |
| *.deps file the Makefile was generated from). |
| |
| If you modify the *.deps or *.opts file, you can easily run 'make regen' in a |
| make-* subdir to regenerate the Makefile from the same files. |
| |
| In your make-* subdir there are empty status files that are touched for every |
| completed make target. From these, 'make' can detect what needs to be rebuilt. |
| You can manually remove them to force a rebuild of a specific target. |
| |
| For example, if you 'rm .make.libosmocore.autoconf', libosmocore and all |
| projects depending on libosmocore will be rebuilt from scratch. |
| |
| For more details on the *.opts and *.deps syntax, read the docs at the top of |
| ./gen_makefile.py. |
| |
| It is also easily possible to keep sources and build trees in various |
| configurations, see the command line options of ./gen_makefile.py. |