boringssl/crypto/obj/README

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OID information is generated via a series of perl scripts. In order, the full
list of commands to run are:
perl objects.pl objects.txt obj_mac.num ../../include/openssl/nid.h
perl obj_dat.pl ../../include/openssl/nid.h obj_dat.h
objects.txt contains the list of all built-in OIDs. It is processed by
objects.pl to output obj_mac.num and nid.h. obj_mac.num is the list of NID
values for each OID. This is an input/output parameter so NID values are stable
across regenerations. nid.h is the header which defines macros for all the
built-in OIDs in C.
nid.h is read by obj_dat.pl to generate obj_dat.h. obj_dat.h contains the
ASN1_OBJECTs corresponding to built-in OIDs themselves along with lookup tables
for search by short name, OID, etc.
Dependency graph:
objects.txt
|
V
[objects.pl] <--+
/ \ |
V V |
nid.h obj_mac.num
|
V
[obj_dat.pl]
|
V
obj_dat.h