What's the correct way to download webrtc source code? - linux

I'm trying to follow the instructions outlined here:
http://www.webrtc.org/native-code/development#TOC-Before-you-start;
but "fetch webrtc" fails with a message that implies a file (src/buildtools/linux32/gn.sha1) is not found. See this post for more detail on the error message:
https://groups.google.com/forum/#!topic/discuss-webrtc/Dt-GRIlLVe4
I've walked through installation of all the "prerequisite software" as described on the above page, but consistently hit the same error. I'm doing this from a Ubuntu 14.04 LTS machine, any thoughts on what I might be doing wrong?

gn is a replacement for gyp to generate Ninja files. I don't think it's required yet (gn is a work-in-progress), but that's likely what you're missing. You could comment out gn from the DEPS and see if things work.

Answering my own question here...
It appears that the problem is related to the fact that I am behind a proxy
and the --no_auth option is used (in depot_tools) when the download_from_google_storage.py script is called.
After reading this post: https://github.com/GoogleCloudPlatform/gsutil/issues/241
I modified my copy of "download_from_google_storage.py" so that the --no_auth option would have no affect. I also created a ~/.boto file with three lines:
[Boto]
proxy = my.proxy.goes.here.com
proxy_port = PROXY_PORT_NUMBER
Then I re-ran "fetch webrtc" and it completed successfully in about 75 minutes.
Go figure...

Related

How to get Node.js to trace ignition within v8? with --trace-ignition

The version of Node.js I used is 10.21.0. I modified BUILD.gn under deps/v8 folder: I set V8_TRACE_IGNITION=true and I rebuilt Node.js using ./configure after that. Then I run "node --trace-ignition xx.js". I expected to trace the ignition's behavior. But it said bad option. I was wondering where I did wrong.
I was wondering where I did wrong.
To get an answer to that, you'd have to describe exactly what you've done, e.g. by posting the patch showing your edits to the file.
That said, modifying BUILD.gn is not necessary to get --trace-ignition to work. Simply use gn args out/<your_output_dir> to edit your build settings as usual, and add v8_enable_trace_ignition = true.

lock preferences in firefox 45.5 on RHEL

I am required to make a custom FireFox profile on a RHEL based system.
most of the configuration are changed inside the FireFox inside the about:config menu.
When I try and lock parameter values using the "mozilla.cfg" file and the "lockPref("", )" function the browser doesn't seem to read those files, I place the file both in: "~/.mozilla/firefox/" and "/usr/lib64/firefox/". I used the http://kb.mozillazine.org/Lock_Prefs guide and some more and still I have no one answer about where those function should be written and how do I check that those functions were loaded.
I would like some clear instructions or a definitive guide that I just couldn't manage to find.
Thanks!
This came up fairly high in a Google search when I was asking the same question, but did not have an answer at the time.
I found the following reference:
https://developer.mozilla.org/en-US/Firefox/Enterprise_deployment
On RHEL7, the files needed to be added to the following locations:
/usr/lib64/firefox/defaults/preferences/autoconfig.js (root:root, 644)
/usr/lib64/firefox/mozilla.cfg (root:root, 644)

Error Unknown variable:BouncingAtomsMorph openInWorld please correct or cancel

I'm new to Pharo ,my problem is when I try to run the BouncingAtomsMorph openInWorld example I keep getting the following error message:
Unknown variable:BouncingAtomsMorph openInWorld please correct or cancel
Please help!
Sadly Bouncing Atoms are no longer included in the standard distribution of newer Pharo versions.
To load it evaluate in a workspace or playground:
Gofer it
url: 'http://smalltalkhub.com/mc/PharoExtras/MorphExamplesAndDemos/main';
package: 'MorphExamplesAndDemos';
load.
Then
BouncingAtomsMorph new openInWorld
will work.
Pharo 5 update:
The MorphExamplesAndDemos package does no longer load correctly starting with Pharo 5. As described here, you can still look at the BouncingAtomsMorph by just clicking on Abandon when a debugger message tells you that this message is no longer understood (It's a problem with another example in the same package):
FileList class>>registerFileReader

Runtime error R6034 in embedded Python application

I am working on an application which uses Boost.Python to embed the Python interpreter. This is used to run user-generated "scripts" which interact with the main program.
Unfortunately, one user is reporting runtime error R6034 when he tries to run a script. The main program starts up fine, but I think the problem may be occurring when python27.dll is loaded.
I am using Visual Studio 2005, Python 2.7, and Boost.Python 1.46.1. The problem occurs only on one user's machine. I've dealt with manifest issues before, and managed to resolve them, but in this case I'm at a bit of a loss.
Has anyone else run into a similar problem? Were you able to solve it? How?
The problem was caused by third-party software that had added itself to the path and installed msvcr90.dll in its program folder. In this case, the problem was caused by Intel's iCLS Client.
Here's how to find the problem in similar situations:
Download Process Explorer here.
Start your application and reproduce runtime error R6034.
Start Process Explorer. In the "View" menu go to "Lower Pane View" and choose "DLLs".
In the top pane, locate your application and click on it. The bottom pane should show a list of DLLS loaded for your application.
Locate "msvcr??.dll" in the list. There should be several. Look for the one that is not in the "winsxs" folder, and make a note of it.
Now, check the path just before your application runs. If it includes the folder you noted in step 5, you've probably found the culprit.
How to fix the problem? You'll have to remove the offending entry from the path before running your program. In my case, I don't need anything else in the path, so I wrote a simple batch file that looks like this:
path=
myprogram.exe
That's it. The batch file simply clears the path before my program runs, so that the conflicting runtime DLL is not found.
This post elaborates on #Micheal Cooper and #frmdstryr and gives a better alternative than my earlier answer.
You can put the following in front of a python script to purge the problematic entries.
import os, re
path = os.environ['PATH'].split(';')
def is_problem(folder):
try:
for item in os.listdir(folder):
if re.match(r'msvcr\d\d\.dll', item):
return True
except:
pass
return False
path = [folder for folder in path if not is_problem(folder)]
os.environ['PATH'] = ';'.join(path)
For the vim with YouCompleteMe case, you can put the following at the top of your vimrc:
python << EOF
import os, re
path = os.environ['PATH'].split(';')
def is_problem(folder):
try:
for item in os.listdir(folder):
if re.match(r'msvcr\d\d\.dll', item):
return True
except:
pass
return False
path = [folder for folder in path if not is_problem(folder)]
os.environ['PATH'] = ';'.join(path)
EOF
A more general solution is:
import os
os.environ['path'] = ";".join(
[path for path in os.environ['path'].split(";")
if "msvcr90.dll" not in map((lambda x:x.lower()), os.listdir(path))])
(I had the same problem with VanDyke SecureCRT)
(This might be better as a comment than a full answer, but my dusty SO acct. doesn't yet have enough rep for that.)
Like the OP I was also using an embedded Python 2.7 and some other native assemblies.
Complicating this nicely was the fact that my application was a med-large .Net solution running on top of 64-Bit IIS Express (VS2013).
I tried Dependency Walker (great program, but too out of date to help with this), and Process Monitor (ProcMon -- which probably did find some hints, but even though I was using filters the problems were buried in thousands of unrelated operations, better filters may have helped).
However, MANY THANKS to Michael Cooper! Your steps and Process Explorer (procexp) got me quickly to a solution that had been dodging me all day.
I can add a couple of notes to Michael's excellent post.
I ignored (i.e. left unchanged) not just the \WinSxS\... folder but also the \System32\... folder.
Ultimately I found msvcr90.dll being pulled in from:
C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64
Going through my Path I found the above and another, similar directory which seemed to contain 32-bit versions. I removed both of these, restarted and... STILL had the problem.
So, I followed Michael's steps once more, and, discovered another msvcr90.dll was now being loaded from:
C:\Program Files\Intel\iCLS Client\
Going through my Path again, I found the above and an (x86) version of this directory as well. So, I removed both of those, applied the changes, restarted VS2013 and...
No more R6034 Error!
I can't help but feel frustrated with Intel for doing this. I had actually found elsewhere online a tip about removing iCLS Client from the Path. I tried that, but the symptom was the same, so, I thought that wasn't the problem. Sadly iCLS Client and OpenCL SDK were tag-teaming my iisexpress. If I was lucky enough to remove either one, the R6034 error remained. I had to excise both of them in order to cure the problem.
Thanks again to Michael Cooper and everyone else for your help!
Using Michael's answer above, I was able to resolve this without a bat file by adding:
import os
# Remove CLS Client from system path
if os.environ['PATH'].find("iCLS Client")>=0:
os.environ['PATH'] = "".join([it for it in os.environ['PATH'].split(";") if not it.find("iCLS Client")>0])
to the main python file of the application. It just makes sure system path didn't include the paths that were causing the issue before the libraries that loaded the dll's were imported.
Thanks!
This post elaborates on #Micheal Cooper and #frmdstryr.
Once you identified the problematic PATH entries, you can put the following in front of a
python script, assuming here that iCLS Client and CMake are problematic.
import os
for forbidden_substring in ['iCLS Client', 'CMake']:
os.environ['PATH'] = ';'.join([item for item in os.environ['PATH'].split(';')
if not item.lower().find(forbidden_substring.lower()) >= 0])
Concerning the vim with YouCompleteMe case, you can put the following at the top of your vimrc:
python << EOF
import os
for forbidden_substring in ['iCLS Client', 'CMake']:
os.environ['PATH'] = ';'.join([item for item in os.environ['PATH'].split(';')
if not item.lower().find(forbidden_substring.lower()) >= 0])
EOF
If none of these solutions is applicable for you, you can try to remove the problem causing
entries from you PATH manually, but you want to make sure you don't break anything else on your
system that depends on these PATH entries. So, for instance, for CMake you could try to remove
its PATH entry, and only put a symlink (or the like) pointing to the cmake.exe binary into some
other directory that is in your PATH, to make sure cmake is still runnable from anywhere.
Thanks for the solution. I just little modified this sample code as the path variable in my system contains the string "ICLS CLIENT" instead of "iCLS Client"
import os
# print os.environ['PATH']
# Remove CLS Client from system path
if os.environ['PATH'].find("iCLS Client") >= 0 or os.environ['PATH'].find("ICLS CLIENT") >= 0:
os.environ['PATH'] = "".join([it for it in os.environ['PATH'].split(";") if not (it.find("iCLS Client")>0 or it.find("ICLS CLIENT")>0)])
I also had the same problem with embedding Python27.dll from a C-program using the Universal-CRT.
A <PYTHON_ROOT>\msvcr90.dll was the offender. And <PYTHON_ROOT> is off-course in my PATH. AFAICS the only users of msvcr90.dll are the PyWin32 modules
<PYTHON_ROOT>\lib\site-packages\win32\win32*.pyd.
The fix was just move <PYTHON_ROOT>\msvcr90.dll to that directory.
PS. PyWin32 still has this as an issue 7 years later!
In my case the rebuilding of linked libraries and the main project with similar "Runtime execution libraries" project setting helped. Hope that will be usefull for anybody.
In my case, I realised the problem was coming when, after compiling the app into an exe file, I would rename that file. So leaving the original name of the exe file doesn't show the error.
The discussion on this page involves doing things way far advanced above me. (I don't code.) Nevertheless, I ran Process Explorer as the recommended diagnostic. I found that another program uses and needs msvcr90.dll in it's program folder. Not understanding anything else being discussed here, as a wild guess I temporarily moved the dll to a neighboring program folder.
Problem solved. End of Runtime error message.
(I moved the dll back when I was finished with the program generating the error message.)
Thank you all for your help and ideas.
Check any library having user specified path by Process Explorer. It is not necessary must be msvcr??.dll
I solved same problem except I run Python 3. Present solutions not helped because they not indicate unusual paths of msvcr90.dll. I debug code step by step inside till error dialog appears after rows (called when my code was importing PyTables module):
import ctypes
ctypes.cdll.LoadLibrary('libbz2.dll')
Then Process Explorer helps to find path to old libbz2.dll caused the problem (steps 3, 4 of #Micheal Cooper algorithm)
Adding this answer for who is still looking for a solution. ESRI released a patch for this error. Just download the patch from their website (no login required), install it and it will solve the problem. I downloaded the patch for 10.4.1 but there are maybe patches for other versions also.

iPhone SQLite encryption with SQLCipher facing errors

I am trying to learn about the encryption of DB at application level using this tutorial. But I am getting an error that says
sqlcipher/sqlite3.c:11033:25: error: openssl/evp.h: No such file or directory
sqlcipher/sqlite3.c:11034:26: error: openssl/rand.h: No such file or directory
sqlite3.c:11035:26: error: openssl/hmac.h: No such file or directory
and due these there are around 93 more errors in the build process. I have strictly followed the tutorial but I am not able to get rid of those errors.
I have added the path of the source code as instructed in the tutorials but still the problem persists. The screenshot could be seen here
I had the same problem, in my case it was caused by a space in my OPENSSL_SRC path. Enclosing the value of OPENSSL_SRC in double-quotes fixed the problem.
The error messages you are seeing indicate that the compiler can't find the OpenSSL headers included in the SQLCipher code. The most likely problem is that you didn't add the OpenSSL headers to your include path when setting up your project. Perhaps you missed this step in the tutorial: "Look for the “Header Search Paths” setting and add references to $(SQLCIPHER_SRC) and $(OPENSSL_SRC). Check “recursive” on both."
As an aside, the information on that MO article is dated. In the future you can refer to this updated tutorial on the SQLCipher website: http://sqlcipher.net/documentation/ios
After long time i'm not sure whether you fixed this issue or not anyway to fix this do as follows:
In OPENSSL_SRC change destination from "/openssl-1.0.0d" to "/openssl-1.0.0d/include".
thatz it..it has to work.

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