tree 028887c5099a9e0ee1878554f518953b94b1f0e6
parent 71640a32969b31d290078506917ece652221e304
author Pirama Arumuga Nainar <pirama@google.com> 1562136559 -0700
committer Oliver Nguyen <olivernguyen@google.com> 1580756604 +0000

Add libprofile-extras to all link steps when NATIVE_COVERAGE is enabled.

libprofile-extras has a wrapper to getenv() that appends the effective
userid (euid) of the current process to GCOV_PREFIX.  This avoids
conflicts and permissions issues when multiple processes try to
create/access the same directories and files under /data/misc/trace.

This library needs to be added and the -Wl,--wrap,getenv flag needs to
be passed to all link steps.  Since Android.mk does not propagate flags
and libraries across dependencies, this change just adds the library and
flag to all non-static-library Android.mk modules.  As a consequence,
*ALL* binaries created via Android.mk will have the signal handler and
property watcher thread in libprofile-extras but they are no-ops in
non-coverage-enabled binaries.

The dependency is added early enough in core/binary.mk so that the
LOCAL_SOONG_LINK_TYPE resolutions occur correctly.

Bug: 148178774
Test: Verify that coverage files are written to
/data/misc/trace/<euid>/proc/... instead of /data/misc/trace/proc/...

Change-Id: I4d5f849c15e9a278253f2148185ddf3ab2878e2f
Merged-In: I4d5f849c15e9a278253f2148185ddf3ab2878e2f
(cherry picked from commit b8f898ef88ab34f3a5914cd3806155c8692ff7db)