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fic gcov use and move it into the Makefile
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This commit is contained in:
Kay Sievers
parent
852cc0f58d
commit
a8b38f1c44
37
Makefile
37
Makefile
@ -27,6 +27,10 @@ USE_LOG = true
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# to print the debug messages to syslog)
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DEBUG = false
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# compile with gcc's code coverage option
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# (use it with DEBUG, works only with glibc)
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USE_GCOV = false
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# include Security-Enhanced Linux support
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USE_SELINUX = false
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@ -186,6 +190,11 @@ else
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STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment
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endif
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ifeq ($(strip $(USE_GCOV)),true)
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CFLAGS += -fprofile-arcs -ftest-coverage
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LDFLAGS = -fprofile-arcs
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endif
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# if our own version of klibc is used, we need to build it
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ifeq ($(strip $(USE_KLIBC)),true)
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KLIBC_INSTALL = $(PWD)/klibc/.install
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@ -291,6 +300,10 @@ ccdv: ccdv.c
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clean:
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- find . \( -not -type d \) -and \( -name '*~' -o -name '*.[oas]' \) -type f -print0 | xargs -0rt rm -f
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- find -name "*.gcno" -print0 | xargs -0rt rm -f
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- find -name "*.gcda" -print0 | xargs -0rt rm -f
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- find -name "*.gcov" -print0 | xargs -0rt rm -f
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- rm -f udev_gcov.txt
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- rm -f core $(PROGRAMS) $(GEN_HEADERS) $(GEN_CONFIGS)
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$(MAKE) -C klibc SUBDIRS=klibc clean
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@extras="$(EXTRAS)"; for target in $$extras; do \
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@ -397,4 +410,28 @@ test tests: all
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buildtest:
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./test/simple-build-check.sh
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.PHONY: buildtest
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gcov-all:
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$(MAKE) clean all DEBUG=true USE_GCOV=true
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@echo
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@echo "binaries built with gcov support."
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@echo "run the tests and analyze with 'make udev_gcov.txt'"
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.PHONY: gcov-all
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# see docs/README-gcov_for_udev
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udev_gcov.txt: $(wildcard *.gcda) $(wildcard *.gcno)
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for file in `find -maxdepth 1 -name "*.gcno"`; do \
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name=`basename $$file .gcno`; \
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echo "################" >> $@; \
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echo "$$name.c" >> $@; \
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echo "################" >> $@; \
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if [ -e "$$name.gcda" ]; then \
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gcov -l "$$name.c" >> $@ 2>&1; \
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else \
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echo "code for $$name.c was never executed" >> $@ 2>&1; \
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fi; \
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echo >> $@; \
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done; \
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echo "view $@ for the result"
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@ -2,6 +2,8 @@
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Using GCC's code coverage tool, gcov, with udev
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Leann Ogasawara <ogasawara@osdl.org>, April 2004
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################################################
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For more information on using gcov please see:
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@ -13,14 +15,11 @@ Note that this was developed with udev version 024.
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- Make sure you've installed udev and that it is working properly.
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If you are having problems, refer to the README and HOWTO-udev_for_dev
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documents in udev tarball. I've also compiled a udev_for_dev
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toubleshooting document for Red Hat which can be found in:
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docs/rh_udev_for_dev.txt
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documents in udev tarball.
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- execute make_gcov.sh from udev top level directory
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./make_gcov.sh
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make gcov-all
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This will compile udev with gcov support. Basically make_gcov.sh will
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run make but override the CFLAGS. It strips any optimization from
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@ -28,21 +27,9 @@ Note that this was developed with udev version 024.
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also add the -fprofile-arcs and -ftest-coverage options which are the
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necessary flags needed to use gcov.
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make_gcov.sh will assume the same default parameters as the regular
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make but also accepts the same parameters. For example if you want
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to get code coverage analysis for udev with the DEBUG flag turned
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on, you would just execute:
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./make_gcov.sh DEBUG=true
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There is one exception, gcov will not work with klibc as it does not
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compile cleanly with the -fprofile-arcs and -ftest-coverage flags.
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With this said it is pretty much useless to set the KERNEL_DIR flag
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when using make_gcov.sh as well.
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Don't be alarmed if you look into your udev directory and see that it
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has been polluted with a bunch of *.bb, *.bbg, *.da, and *.gcov files.
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gcov creates and uses these files to extract the code coverage info.
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If you look into your udev directory and see that it has been polluted with
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a bunch of *.gcno, *.gcda and *.gcov files. gcov creates and uses these files
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to extract the code coverage info.
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- After running make_gcov.sh you need to install udev again. So basically,
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@ -58,7 +45,7 @@ Note that this was developed with udev version 024.
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level directory. You need to be root to do this.
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su to root
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./run_gcov.sh
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make udev_gcov.txt
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- This creates udev_gcov.txt in the udev top level directory which holds all
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the code coverage information. To see an example of the code coverage info
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@ -95,14 +82,9 @@ Note that this was developed with udev version 024.
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was never hit during execution.
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- Once you are done with using gcov for udev and want to return to your
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normal use of udev. Simply,
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normal use of udev, run a regular 'make clean' on your udev directory.
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Then just run a regular make and make install and you are back to normal:
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./make_gcov.sh clean
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This will clean out all the *.bb, *.bbg, *.da, *.gcov files produced by gcov.
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It will also run a regular make clean on your udev directory. Then just run
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a regular make and make install and you are back to normal:
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make
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make clean all
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su to root
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make isntall
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make install
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53
make_gcov.sh
53
make_gcov.sh
@ -1,53 +0,0 @@
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#!/bin/sh
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#
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# gcov capability for udev
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#
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# Provides code coverage analysis for udev.
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#
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# make_gcov.sh assumes the same same default parameters as make, but also
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# accepts the same parameters as make (see README file in udev/ for
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# parameter info). There is one exception, klibc can not be used with
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# gcov as it will not compile cleanly.
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#
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# make_gcov.sh then overrides CFLAGS to strip out optimization in order
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# for gcov to get correct code coverage analysis.
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#
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# Leann Ogasawara <ogasawara@osdl.org>, April 2004
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# clean up udev dir
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clean_udev () {
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find -name "*.gcno" -exec rm -f "{}" \;
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find -name "*.gcda" -exec rm -f "{}" \;
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find -name "*.gcov" -exec rm -f "{}" \;
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rm -f udev_gcov.txt
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make clean
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}
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PWD=`pwd`
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GCCINCDIR=`gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"`
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LIBSYSFS="-I$PWD/libsysfs/sysfs -I$PWD/libsysfs"
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WARNINGS="-Wall -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
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GCC="-I$GCCINCDIR"
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USE_LOG="-DUSE_LOG"
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DEBUG="-D_GNU_SOURCE"
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GCOV_FLAGS="-pipe -fprofile-arcs -ftest-coverage"
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for i in $*; do
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pre=`echo $i | sed 's/=.*//g'`
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post=`echo $i | sed 's/.*=//g'`
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if [ $pre = "USE_KLIBC" ] && [ $post = "true" ]; then
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echo "cannot use gcov with klibc, will not compile"
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exit
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elif [ $pre = "USE_LOG" ] && [ $post = "false" ]; then
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USE_LOG=""
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elif [ $pre = "DEBUG" ] && [ $post = "true" ]; then
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DEBUG="-g -DDEBUG -D_GNU_SOURCE"
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elif [ $pre = "clean" ]; then
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clean_udev
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exit
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fi
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done
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clean_udev
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make $* CFLAGS="$WARNINGS $GCOV_FLAGS $USE_LOG $DEBUG $GCC $LIBSYSFS" LDFLAGS="-Wl,-warn-common -fprofile-arcs"
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40
run_gcov.sh
40
run_gcov.sh
@ -1,40 +0,0 @@
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#!/bin/sh
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#
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# run gcov on udev
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#
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# Generate code coverage analysis for udev files
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#
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# This requires that you compiled udev with gcov flags i.e.
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# you should have compiled udev with the make_gcov.sh script.
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#
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# Leann Ogasawara <ogasawara@osdl.org>, April 2004
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PWD=`pwd`
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# check if root else may not have access to *.da files
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# and gcov analysis will fail.
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if [ $(id -u) -ne 0 ]; then
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echo "please become root before executing run_gcov.sh"
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exit 1
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fi
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echo > udev_gcov.txt
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echo "CODE COVERAGE ANALYSIS FOR UDEV" >> udev_gcov.txt
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echo >> udev_gcov.txt
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for file in `find -maxdepth 1 -name "*.gcno"`; do
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name=`basename $file .gcno`
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echo "################" >> udev_gcov.txt
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echo "$name.c" >> udev_gcov.txt
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echo "################" >> udev_gcov.txt
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if [ -e "$name.gcda" ]; then
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gcov -l "$name.c" >> udev_gcov.txt 2>&1
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else
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echo "code for $name.c was never executed" >> udev_gcov.txt 2>&1
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echo "no code coverage analysis to be done" >> udev_gcov.txt 2>&1
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fi
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echo >> udev_gcov.txt
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done
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echo "udev gcov analysis done. View udev_gcov.txt for results."
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