The official OpenWrt packages are found in the respective packages folder on the repository server. Packages containing shell scripts only, are of course architecture-independent. All packages containing binaries are architecture-dependent, and some, e.g. kmods, are kernel version specific.
Each release has its own directory containing sub-directories for the different platforms supported, each platform-directory contains pre-build images for the different targets and a packages directory containing the installable *.ipk files.
Here are some examples of OpenWrt package repositories for different compilation targets and OpenWrt versions. The specific repository for your OpenWrt version should already be configured correctly in OPKG when installing the specific OpenWrt image for your device.
Source tar-balls for most packages can be found at http://downloads.openwrt.org/sources/ and http://mirror2.openwrt.org/sources/. Source tar-balls in trunk are sometimes only found at the PKG_SOURCE_URL from the Makefile.
Third party packages are untested and unsupported by OpenWrt, and no warranties are made about their safety or usefulness. They could very well contain backdoors and such. So install only packages from sources, you trust! Please get support for third-party packages from the maintainers of those packages, not the OpenWrt developers.
Common sources for such packages include:
→ opkg – Technical Reference. Below you see a very short outtake:
| ||Print a list of all available commands and options|
| ||Download the current list of packages available|
| ||View the list of all packages in the current package list. Use with regular expressions|
| ||View the list of installed packages|
| || Install the package named
opkg install http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/umurmur-polarssl_0.2.6-1_ar71xx.ipk
| || Remove the
|-V <level>||–verbosity <level>||Set verbosity level to <level>. 0 = errors only, 1 = normal messages (def), 2 = informative messages, 3 = debug, 4 = debug level 2|
|-d <dest_name>||–dest <dest_name>||Use <dest_name> as the the root directory for package installation, removal, upgrading. <dest_name> should be a defined dest name from the configuration file, (but can also be a directory name in a pinch).|
|-o <dir>||–offline-root <dir>||Use <dir> as the root directory for offline installation of packages.|
→ opkg – Technical Reference: Installation Destinations
→ Mounting Filesystems for various ways to mount external storage