@node State
@unnumbered State

Dependency and build state is kept inside @file{.redo} subdirectory in
each directory related the build. Each corresponding target has its own,
recreated with every rebuild, @file{.dep} file. It is
@url{https://www.gnu.org/software/recutils/, recfile}, that could have
various dependency information (@file{dep.rec} with the schema
included):

@example
Build: 80143f04-bfff-4673-950c-081d712f573d

Type: ifcreate
Target: foo.o.do

Type: ifchange
Target: default.o.do
Ctime: 1605721341.253305000
Hash: f4929732f96f11e6d4ebe94536b5edef426d00ed0146853e37a87f4295e18eda

Type: always

Type: stamp
Hash: 5bbdf635932cb16b9127e69b6f3872577efed338f0a4ab6f2c7ca3df6ce50cc9
@end example