Different buildstamp behavior between genrule and cc_library.

[PiotrSikora]

It seems that genrule's bazel-out/volatile-status.txt and bazel-out/stable-status.txt retain all variables produced by workspace_status_command.

However, cc_library's build-info-volatile.h retains only:

#define BUILD_TIMESTAMP 1477468904621
#define BUILD_SCM_REVISION "0"
#define BUILD_SCM_STATUS ""

and build-info-nonvolatile.h retains only:

#define BUILD_EMBED_LABEL ""
#define BUILD_HOST "localhost"
#define BUILD_USER "me"

ignoring everything else.

[philwo]

@lberki I remember you recently worked on the workspace_status_command thing to incorporate more variables in Bazel - does this ring any bell?

[lberki]

Me. I didn't thread them through to C++. Let's see what I can do quickly...

[lberki]

Ugh. This is way too complicated to do quickly :(

[pengxuant]

Hi, Iberki,

Is there any time estimate on this issue being fixed? It would be a great feature for detecting honest mistakes when building c++ binaries.

Thanks!
-Peng