On Wed, 15 Aug 2012, Miles Bader wrote:
(3) The final version info is updated (using VCS info and/or autoconf version info) at make time using a script, and when it changes, only causes a source file (e.g., version.c) to change. This means that although some things are rebuilt after a commit (version.o, and relinking of any binaries that use it), the amount of rebuilding is relatively minor while still yielding accurate info.
Likewise, GraphicsMagick configures a "version.h" as well as a version file used for non-autotools builds under Windows. With the currently used mechanism, only the few files depending on version.h need to be rebuilt but the whole project relinks.
If the project "config.h" was to be re-generated (seems to be necessary with new AC_INIT), then all of the source modules would need to be recompiled and relinked since everything depends on the configuration header.
Bpb -- Bob Friesenhahn bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
