When building YumaPro SDK from source code the build flag EVERYTHING includes all optional code modules in the build.
New features are constantly being added to YumaPro SDK and the flag EVERYTHING is updated to include new features.
Usage of EVERYTHING=1 can be found in the YumaPro SDK Installation Manual in the section: Installing YumaPro SDK from Source Code
All make flags, including EVERYTHING, are documented in the YumaPro SDK README file. The file can be found in the top-level of the source distribution. A copy of the file is contained in the following article:
What make flags are available to tailor the binaries for each platform
The make flags are listed alphabetically. EVERYTHING lists all the make flags that are included when it is specified. The included flags are listed separately along with a description.