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[Qemu-devel] [RFC PATCH 4/5] build-system: add clean-coverage target
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RFC PATCH 4/5] build-system: add clean-coverage target |
Date: |
Wed, 20 Jun 2018 14:20:31 +0100 |
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 <address@hidden>
---
Makefile | 11 +++++++++++
docs/devel/testing.rst | 11 ++++++++---
2 files changed, 19 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index e46f2b625a..cb4af8bf80 100644
--- a/Makefile
+++ b/Makefile
@@ -725,6 +725,14 @@ 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
@@ -1075,6 +1083,9 @@ 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..a3652aea14 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 ``$build_dir/tests/``, please read the ``gcov``
-documentation for more information.
+
+If you want to gather coverage information on a single test the ``make
+clean-coverage`` target can be used to any existing coverage
+information before running a single test.
+
+Reports can be obtained by running ``gcov`` command
+on the output files under ``$build_dir/tests/``, please read the
+``gcov`` documentation for more information.
QEMU iotests
============
--
2.17.1
- [Qemu-devel] [RFC PATCH 2/5] .gitignore: add .gcov files, (continued)