https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83200
Bug ID: 83200
Summary: Unable to manipulate (prefix, strip) coverage/profile
data file (.gcda) paths at compile time
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: kevin.worth at hpe dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 42739
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42739&action=edit
Patch to add options -fprofile-dir-prefix, -fprofile-dir-strip
Using the run-time environment variables GCOV_PREFIX and GCOV_PREFIX_STRIP is
not always practical, e.g. profiling a large number of components in a system,
especially things like system daemons that are launched with their own
environment.
Utilizing similar logic to the parsing of those variables at compile-time
allows for path manipulation independent of the run-time modifications. This is
particularly useful in order to get the current working directory at the time
of compilation, which in complex build systems may be hard to reproduce
statically with an -fprofile-dir parameter.
The attached patch has been tested (and is being used) against gcc-5.3.0 and
cleanly ports to current trunk/master (though is presently unused/untested) and
seems to help address this issue for my uses.
