is there a way to tell clang to remove comment lines when generating preprocessed output?
Apparently, this is a difference between gcc and clang, and I have not found an option to do so
Thanks
Alex
To be more precise: It seems that I have an issue with input from file, please see this sample:
CONTENT="// \$REMOVE BEFORE FLIGHT\$\r\nprintf(\"HelloWorld!\");"
echo "Original:\n$CONTENT"
echo "-------------------------"
echo "From stdin"
echo $CONTENT | cpp -P -E -nostdinc -xc++ -
echo "-------------------------"
echo "From file"
echo $CONTENT > foo.sample
cpp -P -E -nostdinc -xc++ foo.sample
echo "\n What gives?"
Addition: It appears, that the -x Argument is changed. Using -v, I can see that on the command line, actually -x c++ is passed, whereas when using a file as input, it is changed to -x c.
Any idea why?
Related
is there any lvm.conf editor?
I'm trying to set global_filter, use_lvmtad and some other options, currently using sed:
sed -i /etc/lvm/lvm.conf \
-e "s/use_lvmetad = 1/use_lvmetad = 0/" \
-e "/^ *[^#] *global_filter/d" \
-e "/^devices {/a\ global_filter = [ \"r|/dev/drbd.*|\", \"r|/dev/dm-.*|\", \"r|/dev/zd.*|\" ]"
but I don't like this too much, is there any better way?
I found only lvmconfig tool, but it can only display certain configuration sections, and can't edit them.
If you using Ubuntu variant then you can use the LVM GUI to configure and manage the LVM. Refer this link
It seems that augtool is exactly what I was looking for.
These two packages should be enough to proper processing lvm.conf file:
apt install augeas-tools augeas-lenses
Example usage:
augtool print /files/etc/lvm/lvm.conf
And you should get the whole parse tree on stdout.
If the parser fails you won’t get any output, print the error message using:
augtool print /files/etc/lvm/lvm.conf/error
The augtool equivalent for the sed command from the original question:
augtool -s <<EOT
set /files/etc/lvm/lvm.conf/global/dict/use_lvmetad/int "0"
rm /files/etc/lvm/lvm.conf/devices/dict/global_filter
set /files/etc/lvm/lvm.conf/devices/dict/global_filter/list/0/str "r|^/dev/drbd.*|"
set /files/etc/lvm/lvm.conf/devices/dict/global_filter/list/1/str "r|/dev/dm-.*|"
set /files/etc/lvm/lvm.conf/devices/dict/global_filter/list/2/str "r|/dev/zd.*|"
EOT
I am giving a job to Jenkins to build binaries for my code through make file . It is showing error of extraneous end if in .dep.inc file,I tried to change the configuration of net beans.
This file is getting generated from auto generated make file in net beans. In net beans it is compiling but in Jenkins it is showing error.*
# dependency checking support
.depcheck-impl:
#echo "# This code depends on make tool being used" >.dep.inc
#if [ -n "${MAKE_VERSION}" ]; then \
echo "DEPFILES=\$$(wildcard \$$(addsuffix .d, \$${OBJECTFILES}))" >>.dep.inc; \
echo "ifneq (\$${DEPFILES},)" >>.dep.inc; \
echo "include \$${DEPFILES}" >>.dep.inc; \
echo "endif" >>.dep.inc; \
else \
echo ".KEEP_STATE:" >>.dep.inc; \
echo ".KEEP_STATE_FILE:.make.state.\$${CONF}" >>.dep.inc; \
fi
you are using BASH syntax instead of Makefile. One option could be to use the conditional structure of Makefile:
Conditional Parts of Makefiles
Another way is to define the whole BASH instruction in the same line, like that:
if [ <condition>]; then <action1>; else <action2>; fi
In Makefile, each line of a target could be a SHELL, but you should not split them.
Finally, you can use the "define" environment to insert BASH code:
define <name>=
<BASH code>
<...>
<name>: ; #$(value <name>)
.ONESHELL
I hope you find it useful!
I want to ask how to find all the executable names of a package in ROS (Robot Operating System)? For example, find spawn_model in gazebo_ros package. When I inspect the package in my system, it just shows some .xml, .cmake files, without any executables. But I can run it, such as: rosrun gazebo_ros spawn_model.
Thank you!
An easy way to do this is to type: "rosrun name_of_package " and then press tab two times, it should show you all the executables built.
After looking in the bash autocompletion script for rosrun, it looks like the command catkin_find is used to find the location of the executables for a package, and the executables are filtered with a find command.
If you want to create a script to give you a list of the executables follow the instructions below:
Save the following script in a file called rospack-list-executables:
#!/bin/bash
if [[ $# -lt 1 ]]; then
echo "usage: $(basename $0) <pkg_name>"
echo ""
echo " To get a list of all package names use the command"
echo " 'rospack list-names'"
exit
fi
pkgname=${1}
pkgdir="$(catkin_find --first-only --without-underlays --libexec ${pkgname})"
if [[ -n "${pkgdir}" ]]; then
find -L "${pkgdir}" -executable -type f ! -regex ".*/[.].*" ! -regex ".*${pkgdir}\/build\/.*" -print0 | tr '\000' '\n' | sed -e "s/.*\/\(.*\)/\1/g" | sort
else
echo "Cannot find executables for package '${pkgname}'." >&2
exit 1
fi
Then make the rospack-list-executables script executable (chmod +x rospack-list-executables) and place it in a directory that can be found in your $PATH environment variable.
Run the script:
$ rospack-list-executables gazebo_ros
debug
gazebo
gdbrun
gzclient
gzserver
libcommon.sh
perf
spawn_model
You should get the same result that you get when you type the rosrun <pkgname> command and press Tab:
$ rosrun gazebo_ros
debug gazebo gdbrun gzclient gzserver libcommon.sh perf spawn_model
You can check the executables for all packages with the following bash code:
rospack list-names | while read pkgname; do
echo "Executables for package '${pkgname}':";
rospack-list-executables $pkgname; echo "";
done
To enable package autocompletion for your newly created command, type the following:
complete -F _roscomplete rospack-list-executables
If you do not want to have to type the complete command every time you login, you can append it to your .bashrc file:
echo "complete -F _roscomplete rospack-list-executables" >> ~/.bashrc
Now when you type the command rospack-list-executables and press the Tab key, you should get a list of all the available packages to choose from.
catkin_find --first-only --without-underlays --libexec <your package name>)
should give you the folder where the executables are
I'm entirely new to using bash and Xcode build scripts and so my code is probably a jungle full of errors.
The idea here is to trigger the script below which will scrape the directory that it is saved in for any .js automation scripts. It will then send these scripts to instruments to be run one at a time. I found some nifty code that created time stamped files and so I used that to create a more meaningful storage system.
#!/bin/bash
# This script should run all (currently only one) tests, independently from
# where it is called from (terminal, or Xcode Run Script).
# REQUIREMENTS: This script has to be located in the same folder as all the
# UIAutomation tests. Additionally, a *.tracetemplate file has to be present
# in the same folder. This can be created with Instruments (Save as template...)
# The following variables have to be configured:
#EXECUTABLE="Plans.app"
# Find the test folder (this script has to be located in the same folder).
ROOT="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# Prepare all the required args for instruments.
TEMPLATE=`find $ROOT -name '*.tracetemplate'`
#EXECUTABLE=`find ~/Library/Application\ Support/iPhone\ Simulator | grep "${EXECUTABLE}$"`
echo "$BUILT_PRODUCTS_DIR"
echo "$PRODUCT_NAME"
EXECUTABLE="${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.app/"
SCRIPTS=`find $ROOT -name '*.js'`
# Prepare traces folder
TRACES="${ROOT}/Traces/`date +%Y-%m-%d_%H-%M-%S`"
mkdir -p "$TRACES"
printf "\n" >> "$ROOT/results.log"
echo `date +%Y-%m-%d_%H-%M-%S` >> "$ROOT/results.log"
# Get the name of the user we should use to run Instruments.
# Currently this is done, by getting the owner of the folder containing this script.
USERNAME=`ls -l "${ROOT}/.." | grep \`basename "$ROOT"\` | awk '{print $3}'`
# Bring simulator window to front. Depending on the localization, the name is different.
osascript -e 'try
tell application "iPhone Simulator" to activate
on error
tell application "iOS Simulator" to activate
end try'
# Prepare an Apple Script that promts for the password.
PASS_SCRIPT="tell application \"System Events\"
activate
display dialog \"Password for user $USER:\" default answer \"\" with hidden answer
text returned of the result
end tell"
# Run all the tests.
for SCRIPT in $SCRIPTS; do
echo -e "\nRunning test script $SCRIPT"
TESTC="sudo -u ${USER} xcrun instruments -l -c -t ${TEMPLATE} ${EXECUTABLE} -e UIARESULTSPATH ${TRACES}/${TRACENAME} -e UIASCRIPT ${SCRIPT} >> ${ROOT}/results.log"
#echo "$COMMAND"
echo "Executing command $TESTC" >> "$ROOT/results.log"
echo "here $TESTC" >> "$ROOT/results.log"
OUTPUT=$(TESTC)
echo $OUTPUT >> "$ROOT/results.log"
echo "Finished logging" >> "$ROOT/results.log"
SCRIPTNAME=`basename "$SCRIPT"`
TRACENAME=`echo "$SCRIPTNAME" | sed 's_\.js$_.trace_g'`
for i in $(ls -A1t $PWD | grep -m 1 '.trace')
do
TRACEFILE="$PWD/$i"
done
if [ -e $TRACEFILE ]; then
mv "$TRACEFILE" "${TRACES}/${TRACENAME}"
fi
if [ `grep " Fail: " results.log | wc -l` -gt 0 ]; then
echo "Test ${SCRIPTNAME} failed. See trace for details."
open "${TRACES}/${TRACENAME}"
exit 1
break
fi
done
rm results.log
A good portion of this was taken from another Stack Overflow answer but because of the repository setup that I'm working with I needed to keep the paths abstract and separate from the root folder of the script. Everything seems to work (although probably not incredibly efficiently) except for the actual xcrun command to launch instruments.
TESTC="sudo -u ${USER} xcrun instruments -l -c -t ${TEMPLATE} ${EXECUTABLE} -e UIARESULTSPATH ${TRACES}/${TRACENAME} -e UIASCRIPT ${SCRIPT} >> ${ROOT}/results.log"
echo "Executing command $TESTC" >> "$ROOT/results.log"
OUTPUT=$(TESTC)
This is turned into the following by whatever black magic Bash runs on:
sudo -u Braains xcrun instruments -l -c -t
/Users/Braains/Documents/Automation/AppName/TestCases/UIAutomationTemplate.tracetemplate
/Users/Braains/Library/Developer/Xcode/DerivedData/AppName-
ekqevowxyipndychtscxwgqkaxdk/Build/Products/Debug-iphoneos/AppName.app/ -e UIARESULTSPATH
/Users/Braains/Documents/Automation/AppName/TestCases/Traces/2014-07-17_16-31-49/ -e
UIASCRIPT /Users/Braains/Documents/Automation/AppName/TestCases/Test-Case_1js
(^ Has inserted line breaks for clarity of the question ^)
The resulting error that I am seeing is:
posix spawn failure; aborting launch (binary ==
/Users/Braains/Library/Developer/Xcode/DerivedData/AppName-
ekqevowxyipndychtscxwgqkaxdk/Build/Products/Debug-iphoneos/AppName.app/AppName).
I have looked all over for a solution to this but I can't find anything because Appium has a similar issue. Unfortunately I don't understand the systems well enough to know how to translate the fixes to Appium to my own code but I imagine it's a similar issue.
I do know that the posix spawn failure is related to threading, but I don't know enough about xcrun to say what's causing the threading issue.
Related info:
- I'm building for the simulator but it'd be great to work on real devices too
- I'm using xCode 5.1.1 and iOS Simulator 7.1
- This script is meant to be run as a build post action script in xCode
- I did get it briefly working once before I broke it and couldn't get it back to the working state. So I think that means all of my permissions are set correctly.
UPDATE: So I've gotten to the root of this problem although I have not found a fix yet. First of all I have no idea what xcrun is for and so I dropped it. Then after playing around I found that my Xcode environment variables are returning the wrong path, probably because of some project setting somewhere. If you copy the Bash command from above but replace Debug-iphoneos with Debug-iphonesimulator the script can be run from the command line and will work as expected.
So for anyone who happens across this the only solution I could find was to hardcode the script for the simulator.
I changed EXECUTABLE="${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.app/" to be EXECUTABLE="${SYMROOT}/Debug-iphonesimulator/${EXECUTABLE_PATH}". This is obviously not a great solution but it works for now.
I am trying to write a small shell script to find out the signed and unsigned jars in particular directory. While the script works fine until 4-5 jars, it starts showing unpredictable results if my directory has more jars ( currntly about 25 jars). I am not sure but a possible reason for this might be related to buffering of STDIN/STDOUT. I tried to find a resolution for this in related posts but could not get a clear answer.
Here goes my script: ( it takes JAVA_HOME as an argument ):
#! /bin/bash
JV_HOME=$1
for i in `ls *.jar`
do
echo "scanning $i ..."
FILE=$i
$JV_HOME/bin/jarsigner -verify -verbose -certs $FILE | grep "jar verified" ;
if [ $? -eq 0 ]; then
echo "\n$FILE is code-signed\n"
else
echo "\n$FILE is unsigned/unverified..\n"
fi
done
For some of the jars, it says the jar to be unsigned, when they are actually signed when checked individually with the following command:
$JAVA_HOME/bin/jarsigner -verify -verbose -certs
What could possibly be wrong with the above script?
Thanks in advance,
Pabi