Fix coverage-lcov target for lcov v2.x

Author: Aniketsy

Makefile.pre.in

@@ -917,7 +917,7 @@ coverage-lcov:
 	@lcov $(COVERAGE_LCOV_OPTIONS) --capture \
 	    --directory $(abs_builddir) \
 	    --base-directory $(realpath $(abs_builddir)) \
-	    --path $(realpath $(abs_srcdir)) \
+	    --ignore-errors negative \
 	    --output-file $(COVERAGE_INFO)
 	@ # remove 3rd party modules, system headers and internal files with
 	@ # debug, test or dummy functions.
@@ -931,8 +931,13 @@ coverage-lcov:
 	    '/usr/include/*' \
 	    '/usr/local/include/*' \
 	    '/usr/lib/gcc/*' \
+	    --ignore-errors inconsistent \
+	    --ignore-errors negative \
+	    --ignore-errors unused \
 	    --output-file $(COVERAGE_INFO)
 	@genhtml $(COVERAGE_INFO) \
+	    --ignore-errors inconsistent \
+	    --ignore-errors negative \
 	    --output-directory $(COVERAGE_REPORT) \
 	    $(COVERAGE_REPORT_OPTIONS)
 	@echo