Due to the makefile, the relative paths of the files are different, and
it is impossible to use existing tools such as gcov and lcov to specify
a base compilation path for them.
The solution for Linux is to copy a copy of the source code from
the compilation environment to the test environment,
and there is a place that is consistent with the absolute
path of the compilation environment.
This solution is to pass in the "-b" parameter to directly
modify the info file generated by lcov. The search path will be
executed in the next step of genhtml
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>