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Initial implementation by Christof Warlich <cwarlich@gmx.de> * NEWS: Announce the new feature. * doc/make.texi (Other Special Variables): Document .EXTRA_PREREQS. * src/dep.h (struct dep): New flag to note extra prereq deps. * src/filedef.h (expand_extra_prereqs): Declare a function to expand the value of .EXTRA_PREREQS. * src/file.c (expand_extra_prereqs): Given a struct variable lookup of .EXTRA_PREREQS, convert it into a list of deps and for each one make sure it has a struct file and has the new flag set. (snap_file): A new function invoked by hash_map that will perform per-file operations: set up second expansion, intermediate, and also .EXTRA_PREREQS. Manage circular dependencies by ignoring them. (snap_deps): Defer per-file operations until the end. Look up the global .EXTRA_PREREQS and pass it along to snap_file for each file. * src/implicit.c (struct patdeps): Remember the extra prereqs flag. (pattern_search): Transfer extra prereqs flag settings into the matched pattern rule. * src/rule.h (snap_implicit_rules): Rename count_implicit_rules to snap_implicit_rules since we now do more than count. * src/rule.c (snap_implicit_rules): As we walk through all the pattern rules, add in any global .EXTRA_PREREQS to the dep list. Ensure we take them into account for the max number of prereqs and name length. * src/main.c (main): Add extra-prereqs to .FEATURES. Call the renamed snap_implicit_rules. * tests/scripts/variables/EXTRA_PREREQS: Add tests. |
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