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I'm running ClamXav Sentry as 'launch agent' with ClamAV antivirus scanning engine of my own custom build.
I've tested for building ClamAV (from version 0.90.x to version 0.103.x) on Mac OS X 10.4 through macOS 11.0 Big Sur.
I'm running the latest stable release ClamAV 0.103.0 on macOS 11.0 Big Sur now.
ClamAV 0.103.0 is available on the Download page of ClamavNet, and the release note is here!
When you want to build ClamAV-devel from the Git sources, autotools are now requied.
For further information, see the following section:
'How to install ClamAV®-devel from the Git sources on macOS'. Flexi 10 user manual.

ClamAV can be found in the apt repository. Run this command to install ClamAV: apt-get install clamav. If you need clamd, you may also want to run: apt-get install clamav-daemon. For the stable release, the packages are updated via the StableUpdates mechanism. How to install clamav on your Mac? The easiest way to get the ClamAV package is using Homebrew. Best Free Software for Mac OS. Home; Internet; Office; Media; Games; Graphics; Security; Tools; Home Clamav on Mac. September 17, 2017 October 7, 2017 admin Security clam antivirus mac, clamav mac, clamxav mac.

This memorandum contains as below:
・ Memorandum 1: Building ClamAV 0.103.x on OS X 10.10 Yosemite through macOS 11.0 Big Sur
・ Memorandum 2: Building ClamAV 0.99.x on OS X 10.10, 10.11, 10.12 and macOS 10.13 High Sierra
・ Memorandum 3: Building ClamAV 0.98.7 on OS X 10.10 Yosemite and 10.11 El Capitan
・ Memorandum 4: Building ClamAV on Mac OS X 10.4 (Intel)
・ Memorandum 5: Building ClamAV on Mac OS X 10.4 (PPC)
・ Memorandum 6: Building ClamAV on Mac OS X 10.6 through OS X 10.9 Mavericks
・ Memorandum 7: Running clamd and freshclam as daemon
・ Memorandum 8: Running ClamXav Sentry as 'launch agent' on Mac OS X 10.6 and later…
・ Memorandum 9: Update ClamXav's own Virus Database and running RunFreshclam as daemon
・ Memorandum 10: Running ClamXAV version 2.18.x with B.Y.O. ClamAV antivirus scanning engine
・ Links…


1. Requirements to build ClamAV 0.103.x is very much the same as building ClamAV 0.102.x.

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2. Requirements to build ClamAV 0.102.x are almost the same as building ClamAV 0.101.x. and ClamAV 0.100.x.
The differences are as follows:
LLVM current version is 10.0.x, though ClamAV 1.02.x supports only LLVM =< 3.6.x.
The ClamAV team is not maintaining repackaged LLVM now, and they may drop the repackaged LLVM entirely
and deprecate support for system-installed LLVM in favor of the bytecode interpreter.
So LLVM Libraries are not necessarily required to build ClamAV 0.102.x, I think.

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I am now configuring ClamAV 0.102.x to disable LLVM as follows:
Of course you can configure ClamAV 0.102.x to enable LLVM as before:
3. Requirements to build ClamAV 0.102.x and ClamAV 0.101.x are almost same as before.

4. Differences



ClamAV 0.99.x contains major new features such as YARA rules, PCRE - Perl Compatible Regular Expressions and so on.
To support YARA and ClamAV logical signatures, the Perl Compatible Regular Expressions (PCRE) library is required.
If PCRE isn't installed on your system, you will get a warning message like this while running freshclam.
1. To ensure the PCRE library:
1) Install PCRE - Perl Compatible Regular Expressions.,
2) When compiling ClamAV 0.99.x, it fails with an error:
3) To avoid this failure, simply set CPPFLAGS:
4) And add this configuration option when configuring ClamAV: --with-pcre=/usr/local/pcre2.
2. To compile ClamAV 0.99.x on OS X 10.10 Yosemite or on OS X 10.11 El Capitan and macOS 10.12 Sierra,

3. Configure ClamAV 0.99.x on OS X 10.10 Yosemite as follws:
4. Configure ClamAV 0.99.x on OS X 10.11 El Capitan and macOS 10.12 Sierra as follws:

Built-in LLVM of ClamAV 0.98.7 and 0.99.x are not compatible with GNU C++ on OS X 10.10 Yosemite and 10.11 El Capitan.
So ClamAV 0.98.7 and 0.99.x built on OS X 10.10 Yosemite or on OS X 10.11 El Capitan have major issues:
- Clamd crashes repeatedly throwing 'Segmentation Fault: 11'
- Clamscan also crashes and fails to scan…
- Freshclam fails to load new database logging:
These problems can be avoided by installing official LLVM.
Versions of LLVM beyond 3.6 seem not to be currently supported in ClamAV, so you should install LLVM 3.6.2.
1. Installing LLVM 3.6.2 Pre-built Binaries
2. To use LLVM installed into /usr/local as a system library instead of the ClamAV's built-in LLVM JIT,
add configuration option as following:
3. Configure ClamAV 0.98.7 on OS X 10.10.x Yosemite as follws:
Apple introduded a new security feature SIP: System Integrity Protection (rootless) to OS X 10.11 El Capitan, so in /usr directory
OS X 10.11 El Capitan has the different file composition from OS X 10.10 Yosemite.
While configuring ClamAV 0.98.7 on OS X 10.11 El Capitan, configuration fails with an error:
1. To solve this configuration issue, install LibreSSL.
Setting search path:
You can confirm the installation:
2. But it's not still sufficient to succeed building.
Building fails with an error:
3. To succeed building ClamAV 0.98.7 on OS X 10.11 El Capitan, set CPPFLAGS:
4. Configure ClamAV 0.98.7 on OS X 10.11 El Capitan as follws:
5. Notes

If you use OpenSSL 1.1.1x to compile ClamAV 0.99.x, add more this configuration.

In last update, Clam AntiVirus developer team introduced JIT compiler to ClamAV® 0.96.
Apple gcc (version: 4.0.1 build: 5370) in Mac OS X 10.4 (aka Tiger) failed to build ClamAV 0.96.x and 0.98.x with JITcompiled in.
With a brief struggle I found a good solution that I will tell you here.
1) First, install LLVM (Low Level Virtual Machine) and LLVM-GCC 4.2 Front End.
2) Second, add this configuration option: --enable-llvm.
Then you can build ClamAV 0.96.x and 0.98.x with JIT compiled in and use new features included in anti-virus toolkit.

Install LLVM (Low Level Virtual Machine) and LLVM-GCC 4.2 Front End
1. Installing LLVM-GCC 4.2 Front End Binaries
2. Setting search path
3. Installing LLVM 2.3
Install MacPorts and the packages
1. Installing MacPorts

2. Installing the packages: bzip2
3. Maintaining MacPorts and installed packages
Compile ClamAV 0.98.x and Install

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1. Modify /shared/output.c & output.h to avoid compiling error. (Only needed for compiling ClamAV 0.98.1)
2. ./configure (version 0.98 and 0.98.1)
3. ./configure (version 0.98.3 or later)
4. Make, make check and install ClamAV
To compile ClamAV 0.96.3 or later, bzip2 (Version 1.0.6) that fixes CVE-2010-0405 is required.
Mac OS X has bzip2 (Version 1.0.5) built-inand it is outdated, so you get WARNING as follows while running configuration command.
To solve this problem on Mac OS X 10.4, you can install bzip2 (Version 1.0.6) using MacPorts and add this configuration option:
export LDFLAGS='-L/opt/local/lib' as follows.
Apple has patched the CVE-2010-0405 bug on Mac OS X 10.6.7 but not on Mac OS X 10.4.11.
To compile ClamAV 0.98.3 or later, OpenSSL (Version 0.98y or above including the X509_VERIFY_PARAM function) is required.
Mac OS X 10.4 has OpenSSL 0.9.7l built-in and MacPorts fails to build OpenSSL, so you have to install OpenSSL 0.9.8zh.
1. Install OpenSSL 0.9.8zh
2. Setting search path
Compile ClamAV 0.99.x and Install
To compile ClamAV 0.99.x on Mac OS X 10.4, in addition to installing LLVM Front End, MacPorts, bzip2 and OpenSSL the PCRE library is required as pointed out above.
1. Install PCRE - Perl Compatible Regular Expressions.
2. ./configure
3. Make, make check and install ClamAV

PPC users have to install LLVM-GCC 4.2 Front End Binaries for PPC and configure ClamAV 0.96.x and 0.98.x with different configuration.

Install LLVM (Low Level Virtual Machine) and LLVM-GCC 4.2 Front End
1. Installing LLVM-GCC 4.2 Front End Binaries
2. Setting search path
3. Installing LLVM 2.3
Install MacPorts and the packages
1. Installing MacPorts

2. Installing the packages: bzip2
3. Maintaining MacPorts and installed packages
Compile ClamAV 0.98.x and Install
1. Modify /shared/output.c & output.h to avoid compiling error. (Only needed for compiling ClamAV 0.98.x)
2. ./configure
3. Make, make check and install ClamAV

GNU C++ and bzip2 (Version 1.0.6) are installed on Mac OS X and later, so you can simply build ClamAV 0.96.x and 0.98.x with JIT compiled in and use new features included in anti-virus toolkit.

1. On Mac OS X 10.7, after installing

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Xcode 4.3 in /Applications, you should install the Command Line Tools:

2. Run these commands to make sure that everything is pointed in the right place.
Compile ClamAV 0.98.x and Install
1. ./configure

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2. Make, make check and install ClamAV
Compile ClamAV 0.99.x and Install
1. To compile ClamAV 0.99.x, the PCRE library is required as pointed out above.

2. ./configure
3. Make, make check and install ClamAV

1. I'm running clamd and freshclam as 'launch daemon' managed by:

2. Edit clamd.conf and freshclam.conf for using ' daemons'.
3. Set appropriate permissions for ClamXav and ClamXav Sentry.
4. Notes



1. When running ClamXav Sentry as 'launch agent', ClamXav Sentry keeps alive.

2. On Yosemite and El Capitan, I'm using this org.clamXavSentry.plist file to avoid ClamXav Sentry's annoying error:
3. Notes


1. Now ClamXav and ClamXav Sentry use combined official and its own virus database as below:
2. To get and update ClamXav Virus Database,

3. When you launch ClamXav 2.8.9.1 and update virus definitions, ClamXav logs follwing error:

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1. I'm now running RunFreshclam as 'daemon' instead of freshclam daemon managed by:
/Library/LaunchDaemons/com.clamXav.runfreshclam.plist
2. Edit freshclam.conf for using RunFreshclam ' daemons'.
3. Set appropriate permissions for RunFreshclam (ClamXav version =< 2.8.x).

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4. Checking and updating virus definitions:



1. ClamXav has a new engine install and uninstall mechanism since version 2.9.

2. Steps to satisfy the requirements for ClamXAV Version 2.19.3 (3715):

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1) make empty file called 0.100.1_update_08 inside /usr/local/clamXav/
2) extract gfslogger and RunFreshclam from ClamXAV.app/Contents/Resources/clamavEngineInstaller.pkg
3) place those files into appropriate directory:


5) Set appropriate permissions at /usr/local/clamXav for ClamXAV 2.19.x.
3. Now you can run ClamXAV Sentry 3.19.x as 'launch agent' and run RunFreshclam as 'launch daemon' with no issues.

4. Important Notes

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Comments are closed.

Having trouble completely removing clamXav. A process called clamscan occasionally pops up and uses 80-95% of the CPU on a friends computer. The app has been removed, but typing 'locate clamXav' shows that the engine is still installed in /usr/local/. ClamXav for Mac gives you the tools to keep your computer clean. With an uncluttered interface and convenient functionality, this app is a good choice for most computer-savvy users.

ClamXav can be downloaded directly or through the Mac App Store. The Mac App Store version does not contain the Sentry tool that allows constant scanning for changes by folder, so this tutorial is for the download version which you can get at http://www.clamxav.com/.

Note: ClamXav used to be free but as of June 2015 is a commercial product. I think it’s well worth the $30 and by paying for it I’m helping to ensure the development of the product continues.

After installation, log out of your Mac and back in.

Starting

When you first launch ClamXav it’s a good idea to update the Virus Definitions. Next let’s set some preferences.

General Preferences

1. You can set these as you desire, especially the audible alerts
2. Believe it or not, UNcheck scanning your email for malware. Your spam filter will catch most of this and put it in a spam bucket but ClamXav will stil find it and give you CONSTANT popups about it. I also don’t update virus definitions on launch because we’ll put it on a schedule in a later step. I DO however allow the application to check for updates on launch like any other program. It might seem odd also to UNcheck update virus definitions on launch, but we’re going to do that on a schedule instead in a later step.
3. Click on the Sentry tab next.

Sentry

Sentry keeps an eye on any folder you choose. We’re going to set it to watch your Downloads folder, because that’s where new stuff shows up that we want scanned. This is the feature you only get if you buy directly from ClamXav.com and is not available in the Mac App Store version.

Drag Home Folder Into the Window

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Drag your Downloads folder into the window. Alternatively you can push the plus button and navigate to your Downloads folder.

Your Downloads Folder Will Now be Monitored

1. Verify – you should see simply ~/Downloads in the folders being watched.
2. Click on the Schedule tab next.

Schedule

It’s a good idea to allow virus definitions to be updated daily so set the pulldown to a time you’re sure your machine will be on. Autodesk revit 2015 xforce. Now simply let ClamXav run and hope you never hear back from it!

Run a Full Scan

Run a full scan of your home folder. This took about 3 hours for my very large home folder. It found 450 .emix files, where are all Mail files that are probably in my spam and junk mail folders. Once the scan is done, you can right click on the files and show where they are in the finder, or you can simply choose delete from that menu, or select them all and hit command-delete.

Now that your machine is clean, you can rely on Sentry to watch for changes and to scan only those changes.

Scan On Demand

ClamXav also installs a Service that lets you scan a file or folder at any time. Simply right click on the file or folder you want to scan, pull down to Services, and choose Scan with ClamXav. The application will run and show you the results of the scan.

Log out and back into your account for the contextual menus to be available under Services.

Pick a software title.to downgrade to the version you love!

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Software Version	Release Date	Size
ClamXav 2.1	Jan 8, 2011	19.19 KB

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ClamXav uses as a back-end a slightly modified version of the tried, tested, and very popular ClamAv open source antivirus engine. Mvtec halcon license.
Back in the days before OS X, the number of viruses which attacked Macintosh users totalled somewhere between about 60 and 80.
However, this doesn't mean we should get complacent about checking incoming email attachments or web downloads, for two reasons.
Firstly, there's no guarantee that we Mac users will continue to enjoy the status quo, but more importantly, the majority of the computing world use machines running MS Windows, for which an enormous quantity of viruses exist, so we must be vigilant in checking the files we pass on to our friends and colleagues etc.
For example, if you're a wise person and you've turned MS Office's macro support off then you're not going to notice that virus which is hiding inside this month's edition of Extreme Ironing.doc which your friend sent you.
If you then forward that document to a less wise person who has not turned off the macro support, then you have most likely just sent him a shiny new Pandora's Box with a sign saying 'Open this end'!
Flippancy aside, I'm sure you get the idea: check the file before opening and/or sending it on to someone else. This gives you the opportunity to avoid the file altogether or at least copy and paste any vital information into a new document and send that instead.
Don't forget, if you run VirtualPC you can still become infected and lose valuable data on your Mac even though technically you're running Windows inside a sandbox. VPC will run any application you tell it to, virus or no virus, it doesn't know the difference.
You can protect yourself slightly by not using VPC's 'shared folders', but that's a useful feature which you shouldn't have to be without.

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