diff options
| -rw-r--r-- | Makefile | 37 | ||||
| -rw-r--r-- | docs/README-gcov_for_udev (renamed from README-gcov_for_udev) | 42 | ||||
| -rw-r--r-- | make_gcov.sh | 53 | ||||
| -rw-r--r-- | run_gcov.sh | 40 |
4 files changed, 49 insertions, 123 deletions
@@ -27,6 +27,10 @@ USE_LOG = true # to print the debug messages to syslog) DEBUG = false +# compile with gcc's code coverage option +# (use it with DEBUG, works only with glibc) +USE_GCOV = false + # include Security-Enhanced Linux support USE_SELINUX = false @@ -186,6 +190,11 @@ else STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment endif +ifeq ($(strip $(USE_GCOV)),true) + CFLAGS += -fprofile-arcs -ftest-coverage + LDFLAGS = -fprofile-arcs +endif + # if our own version of klibc is used, we need to build it ifeq ($(strip $(USE_KLIBC)),true) KLIBC_INSTALL = $(PWD)/klibc/.install @@ -291,6 +300,10 @@ ccdv: ccdv.c clean: - find . \( -not -type d \) -and \( -name '*~' -o -name '*.[oas]' \) -type f -print0 | xargs -0rt rm -f + - find -name "*.gcno" -print0 | xargs -0rt rm -f + - find -name "*.gcda" -print0 | xargs -0rt rm -f + - find -name "*.gcov" -print0 | xargs -0rt rm -f + - rm -f udev_gcov.txt - rm -f core $(PROGRAMS) $(GEN_HEADERS) $(GEN_CONFIGS) $(MAKE) -C klibc SUBDIRS=klibc clean @extras="$(EXTRAS)"; for target in $$extras; do \ @@ -397,4 +410,28 @@ test tests: all buildtest: ./test/simple-build-check.sh +.PHONY: buildtest + +gcov-all: + $(MAKE) clean all DEBUG=true USE_GCOV=true + @echo + @echo "binaries built with gcov support." + @echo "run the tests and analyze with 'make udev_gcov.txt'" +.PHONY: gcov-all + +# see docs/README-gcov_for_udev +udev_gcov.txt: $(wildcard *.gcda) $(wildcard *.gcno) + for file in `find -maxdepth 1 -name "*.gcno"`; do \ + name=`basename $$file .gcno`; \ + echo "################" >> $@; \ + echo "$$name.c" >> $@; \ + echo "################" >> $@; \ + if [ -e "$$name.gcda" ]; then \ + gcov -l "$$name.c" >> $@ 2>&1; \ + else \ + echo "code for $$name.c was never executed" >> $@ 2>&1; \ + fi; \ + echo >> $@; \ + done; \ + echo "view $@ for the result" diff --git a/README-gcov_for_udev b/docs/README-gcov_for_udev index ca832803a2..c223dc38e8 100644 --- a/README-gcov_for_udev +++ b/docs/README-gcov_for_udev @@ -2,6 +2,8 @@ Using GCC's code coverage tool, gcov, with udev +Leann Ogasawara <ogasawara@osdl.org>, April 2004 + ################################################ For more information on using gcov please see: @@ -13,14 +15,11 @@ Note that this was developed with udev version 024. - Make sure you've installed udev and that it is working properly. If you are having problems, refer to the README and HOWTO-udev_for_dev - documents in udev tarball. I've also compiled a udev_for_dev - toubleshooting document for Red Hat which can be found in: - - docs/rh_udev_for_dev.txt + documents in udev tarball. - execute make_gcov.sh from udev top level directory - ./make_gcov.sh + make gcov-all This will compile udev with gcov support. Basically make_gcov.sh will run make but override the CFLAGS. It strips any optimization from @@ -28,21 +27,9 @@ Note that this was developed with udev version 024. also add the -fprofile-arcs and -ftest-coverage options which are the necessary flags needed to use gcov. - make_gcov.sh will assume the same default parameters as the regular - make but also accepts the same parameters. For example if you want - to get code coverage analysis for udev with the DEBUG flag turned - on, you would just execute: - - ./make_gcov.sh DEBUG=true - - There is one exception, gcov will not work with klibc as it does not - compile cleanly with the -fprofile-arcs and -ftest-coverage flags. - With this said it is pretty much useless to set the KERNEL_DIR flag - when using make_gcov.sh as well. - - Don't be alarmed if you look into your udev directory and see that it - has been polluted with a bunch of *.bb, *.bbg, *.da, and *.gcov files. - gcov creates and uses these files to extract the code coverage info. + If you look into your udev directory and see that it has been polluted with + a bunch of *.gcno, *.gcda and *.gcov files. gcov creates and uses these files + to extract the code coverage info. - After running make_gcov.sh you need to install udev again. So basically, @@ -58,7 +45,7 @@ Note that this was developed with udev version 024. level directory. You need to be root to do this. su to root - ./run_gcov.sh + make udev_gcov.txt - This creates udev_gcov.txt in the udev top level directory which holds all the code coverage information. To see an example of the code coverage info @@ -95,14 +82,9 @@ Note that this was developed with udev version 024. was never hit during execution. - Once you are done with using gcov for udev and want to return to your - normal use of udev. Simply, - - ./make_gcov.sh clean + normal use of udev, run a regular 'make clean' on your udev directory. + Then just run a regular make and make install and you are back to normal: - This will clean out all the *.bb, *.bbg, *.da, *.gcov files produced by gcov. - It will also run a regular make clean on your udev directory. Then just run - a regular make and make install and you are back to normal: - - make + make clean all su to root - make isntall + make install diff --git a/make_gcov.sh b/make_gcov.sh deleted file mode 100644 index e3ceb96d07..0000000000 --- a/make_gcov.sh +++ /dev/null @@ -1,53 +0,0 @@ -#!/bin/sh -# -# gcov capability for udev -# -# Provides code coverage analysis for udev. -# -# make_gcov.sh assumes the same same default parameters as make, but also -# accepts the same parameters as make (see README file in udev/ for -# parameter info). There is one exception, klibc can not be used with -# gcov as it will not compile cleanly. -# -# make_gcov.sh then overrides CFLAGS to strip out optimization in order -# for gcov to get correct code coverage analysis. -# -# Leann Ogasawara <ogasawara@osdl.org>, April 2004 - -# clean up udev dir -clean_udev () { - find -name "*.gcno" -exec rm -f "{}" \; - find -name "*.gcda" -exec rm -f "{}" \; - find -name "*.gcov" -exec rm -f "{}" \; - rm -f udev_gcov.txt - make clean -} - -PWD=`pwd` -GCCINCDIR=`gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"` -LIBSYSFS="-I$PWD/libsysfs/sysfs -I$PWD/libsysfs" -WARNINGS="-Wall -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations" -GCC="-I$GCCINCDIR" -USE_LOG="-DUSE_LOG" -DEBUG="-D_GNU_SOURCE" -GCOV_FLAGS="-pipe -fprofile-arcs -ftest-coverage" - -for i in $*; do - pre=`echo $i | sed 's/=.*//g'` - post=`echo $i | sed 's/.*=//g'` - if [ $pre = "USE_KLIBC" ] && [ $post = "true" ]; then - echo "cannot use gcov with klibc, will not compile" - exit - elif [ $pre = "USE_LOG" ] && [ $post = "false" ]; then - USE_LOG="" - elif [ $pre = "DEBUG" ] && [ $post = "true" ]; then - DEBUG="-g -DDEBUG -D_GNU_SOURCE" - elif [ $pre = "clean" ]; then - clean_udev - exit - fi -done - -clean_udev - -make $* CFLAGS="$WARNINGS $GCOV_FLAGS $USE_LOG $DEBUG $GCC $LIBSYSFS" LDFLAGS="-Wl,-warn-common -fprofile-arcs" diff --git a/run_gcov.sh b/run_gcov.sh deleted file mode 100644 index ad6a62b130..0000000000 --- a/run_gcov.sh +++ /dev/null @@ -1,40 +0,0 @@ -#!/bin/sh - -# -# run gcov on udev -# -# Generate code coverage analysis for udev files -# -# This requires that you compiled udev with gcov flags i.e. -# you should have compiled udev with the make_gcov.sh script. -# -# Leann Ogasawara <ogasawara@osdl.org>, April 2004 - -PWD=`pwd` - -# check if root else may not have access to *.da files -# and gcov analysis will fail. -if [ $(id -u) -ne 0 ]; then - echo "please become root before executing run_gcov.sh" - exit 1 -fi - -echo > udev_gcov.txt -echo "CODE COVERAGE ANALYSIS FOR UDEV" >> udev_gcov.txt -echo >> udev_gcov.txt - -for file in `find -maxdepth 1 -name "*.gcno"`; do - name=`basename $file .gcno` - echo "################" >> udev_gcov.txt - echo "$name.c" >> udev_gcov.txt - echo "################" >> udev_gcov.txt - if [ -e "$name.gcda" ]; then - gcov -l "$name.c" >> udev_gcov.txt 2>&1 - else - echo "code for $name.c was never executed" >> udev_gcov.txt 2>&1 - echo "no code coverage analysis to be done" >> udev_gcov.txt 2>&1 - fi - echo >> udev_gcov.txt -done - -echo "udev gcov analysis done. View udev_gcov.txt for results." |