-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello list,
The short version Is there any way to make make dump it's database to a makefile and then reuse that dumped makefile to build the source? The long version In one of our projects at work, we use a rather complex set of macros[1] to make it easier for the developers to define how a component is to be built. The developer creates a file called 'makerules.mk' and enters data into a few predefined variable names, like $(component1_SRCS), $(component1_INCL), $(component1_LIBS) where "component1" is the name of the resulting executable of library. When invoking make, the macros are expanded based on the data in those variables to a set of rules and then make just does it's magic on those. As the source code usually is put in a tree, the number of makerules.mk files that the developers are entering data into can be rather large and as a result, the part of the build process that expands the macros takes a lot of time. For example, for one of our components, the expansion takes roughly 40 seconds even as there is nothing to left to do. To save some time, I'm now thinking that our build process could be divided into a few stages. Stage 1 Verify the timestamps on each and every makerules.mk file and if any of the timestamps is newer than the complete makefile, it needs to be regenerated. Possible way to implement: Could be resolved with another temporary makefile that just sets the complete makefile as target and have all the makerules.mk files as dependencies. Stage 2 Generate the complete makefile and expand all the macros. Possible way to implement: The option -p sounds interesting. The problem with -p is that the dumped database also includes -p in MFLAGS and MAKEFLAGS so it's not possible to just invoke make on the complete makefile without first stripping of this option. At first glans, I would like an option like -p but it should not be added to the dumped database, but I'm a bit worried that not adding it there would screw up recursive make. I also would like the option to print to a file rather than stdout as stdout could be used in the makefile that you build and thus make will be confused if invoked on the dumped file. Stage 3 Execute make on the complete makefile. To sum up this question, is it possible to do this without patching make? If not, is it something that you would be interested in including in an official version of make? Thank you in advance. // Torbjörn [1] http://gitorious.org/bobuild/bob/trees/master -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk8/3CUACgkQeY7jmtvbDP2S6gCgyOrwVsZVUy2x0gQ4gDb6G4qd 2coAoI2QgDNAHX84hNy2RArrPd7liSE4 =rnlv -----END PGP SIGNATURE----- _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
