From 990e6a2754fc16501470b661c4af94ec036f1190 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Wed, 20 Jun 2018 12:34:45 +0100 Subject: [PATCH] build-system: add clean-coverage target MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This can be used to remove any stale coverage data before any particular test run. This is useful for analysing individual tests. Signed-off-by: Alex Bennée Reviewed-by: Daniel P. Berrangé Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé --- --- Makefile | 11 +++++++++++ docs/devel/testing.rst | 11 ++++++++--- 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/Makefile b/Makefile index 39fd4c0546..9731ec1bb7 100644 --- a/Makefile +++ b/Makefile @@ -723,6 +723,14 @@ module_block.h: $(SRC_PATH)/scripts/modules/module_block.py config-host.mak $(addprefix $(SRC_PATH)/,$(patsubst %.mo,%.c,$(block-obj-m))), \ "GEN","$@") +ifdef CONFIG_GCOV +.PHONY: clean-coverage +clean-coverage: + $(call quiet-command, \ + find . \( -name '*.gcda' -o -name '*.gcov' \) -type f -exec rm {} +, \ + "CLEAN", "coverage files") +endif + clean: # avoid old build problems by removing potentially incorrect old files rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h @@ -1073,6 +1081,9 @@ endif echo '') @echo 'Cleaning targets:' @echo ' clean - Remove most generated files but keep the config' +ifdef CONFIG_GCOV + @echo ' clean-coverage - Remove coverage files' +endif @echo ' distclean - Remove all generated files' @echo ' dist - Build a distributable tarball' @echo '' diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst index 66ef219f69..7f04ca104e 100644 --- a/docs/devel/testing.rst +++ b/docs/devel/testing.rst @@ -161,9 +161,14 @@ GCC gcov support ``gcov`` is a GCC tool to analyze the testing coverage by instrumenting the tested code. To use it, configure QEMU with ``--enable-gcov`` option and build. Then run ``make check`` as usual. -Reports can be obtained by running ``gcov`` command on the output -files under ``$build_dir/tests/``, please read the ``gcov`` -documentation for more information. + +If you want to gather coverage information on a single test the ``make +clean-coverage`` target can be used to delete any existing coverage +information before running a single test. + +Reports can be obtained by running ``gcov`` command +on the output files under ``$build_dir/tests/``, please read the +``gcov`` documentation for more information. QEMU iotests ============