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author | Rich Salz <rsalz@akamai.com> | 2015-05-15 13:50:38 -0400 |
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committer | Rich Salz <rsalz@openssl.org> | 2015-06-02 12:40:24 -0400 |
commit | 9c3bcfa027cb32421ed20ab77553860b922b82fc (patch) | |
tree | 5bc2b7a055c4abbc75431212948d0693d922f3ab /crypto/objects | |
parent | 366e2a60b2fcc727b061f1459343245476ad6c3b (diff) |
Standardize handling of #ifdef'd options.
Here are the "rules" for handling flags that depend on #ifdef:
- Do not ifdef the enum. Only ifdef the OPTIONS table. All ifdef'd
entries appear at the end; by convention "engine" is last. This
ensures that at run-time, the flag will never be recognized/allowed.
The next two bullets entries are for silencing compiler warnings:
- In the while/switch parsing statement, use #ifdef for the body to
disable it; leave the "case OPT_xxx:" and "break" statements outside
the ifdef/ifndef. See ciphers.c for example.
- If there are multiple options controlled by a single guard, OPT_FOO,
OPT_BAR, etc., put a an #ifdef around the set, and then do "#else"
and a series of case labels and a break. See OPENSSL_NO_AES in cms.c
for example.
Reviewed-by: Matt Caswell <matt@openssl.org>
Diffstat (limited to 'crypto/objects')
0 files changed, 0 insertions, 0 deletions