HOWTO compile OCS Windows Agent

To compile OCS Windows Agent, we will use git to get code from GitHub.


  • Microsoft Visual C++ 2017 or higher
  • Perl 5.8 or newer for building dependencies (you can use XAMPP perl addon)
  • Source code exported from GitHub. git clone

Building dependencies

  • zlib 1.2.8 or newer (
  • openssl 1.0.2r or newer (
  • curl 7.64.1 or newer (
  • tinyXML 2.6.2 or newer (
  • net-snmp 5.7.3 or newer (
  • ZipArchive GPL Edition 4.0.1 or newer (

Note : ZipArchive GPL Edition doesn't support 64-bit archive. To compile the Windows Agent with support for the 64-bit archive you can buy the commercial version of ZipArchive or ask us to integrate your code for the next release

Uncompress sources of these libraries into directory "External_Deps" to create the following directory structures. - External_Deps\Zlib-X.X.X - External_Deps\openssl-X.X.X - External_Deps\curl-X.X.X - External_Deps\tinyxml - External_Deps\net-snmp-X.X - External_Deps\ZipArchive

Building ZipArchive

  • Open "ZipArchive.sln" Visual C++ 2013 solution in folder "External_Deps\ZipArchive".
  • Select configuration "Release Unicode STL MD DLL" for platform x64.
  • Edit project properties and add BIND_TO_CURRENT_VCLIBS_VERSION preprocessor define to _Configuration properties > C/C++ > Preprocessor section to automatically bind DLL to Visual C++ 2017 and MFC versions.
  • Save and build to create unicode DLL for ZipArchive Library.

Building other libraries

Edit script External_Deps\OCS_Make_Required_Libs.bat to meet your need, especially :

  • Set path to MS Visual C++ 2017, for example set C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build
  • Set path to MS Windows SDK, needed to build cURL, for example with VC++ 2017 set WINDOWS_SDK_PATH="C:\Program Files\Microsoft SDKs\Windows\vX.X"
  • Set path to Perl 5.8 or higher binary, for example set PERL_PATH=C:\xampp\perl\bin
  • Set path to Zlib sources, for example set ZLIB_PATH=D:\Developp\OCS Inventory NG\Bazaar\ocsinventory-windows-agent\External_Deps\zlib-1.2.8
  • Set path to OpenSSL sources, for example set OPENSSL_PATH=D:\Developp\OCS Inventory NG\Bazaar\ocsinventory-windows-agent\External_Deps\openssl-1.0.2r
  • Set path to cURL sources, for example set CURL_PATH=D:\Developp\OCS Inventory NG\Bazaar\ocsinventory-windows-agent\External_Deps\curl-7.64.1
  • Set path to tinyXML sources, for example set XML_PATH=D:\Developp\OCS Inventory NG\Bazaar\ocsinventory-windows-agent\External_Deps\tinyxml
  • Set path to ZipArchive sources, for example set ZIP_PATH=D:\Developp\OCS Inventory NG\Bazaar\ocsinventory-windows-agent\External_Deps\ZipArchive

Then, open x64 Native Tools Command Prompt for VS 2017 and launch script "OCS_Make_Required_Libs.bat" to create all libs and prepare for building OCS agent.

Building Agent

Open solution "OCSInventory.sln", select configuration "Release" for platform x64, select project "Agent" and build it !

See Options.txt for agent's command line switches.

We hope it will works for you !