| SysVars | SysVars | Description | Section | Page |
|---|
| BUILD_DIR | BUILD_DIR | Legacy alias for ROBUILD_DIR | Files, directories, and variables | |
| C | C | Search path for the core C library headers, objects, and most exported libraries | Compilers, linkers, and 64-bit binary tools | |
| COPYRIGHT | COPYRIGHT | Internal path reserved for common copyright declarations | Compilers, linkers, and 64-bit binary tools | |
| CPLUSPLUS | CPLUSPLUS | The RISC OS-equivalent path for the C++ headers | Compilers, linkers, and 64-bit binary tools | |
| DESKLIB | DESKLIB | The RISC OS-equivalent path for the DeskLib library | Compilers, linkers, and 64-bit binary tools | |
| EXPORTS_DIR | EXPORTS_DIR | Native host destination for riscos-amu export output | Build orchestration and makefiles | |
| GITHUB_USER_LOGIN | GITHUB_USER_LOGIN | GitHub username used when populating ownership templates | Project and CI | |
| GITLAB_USER_LOGIN | GITLAB_USER_LOGIN | GitLab username used when populating ownership templates | Project and CI | |
| HDR | HDR | The RISC OS-equivalent path for assembler header files | Compilers, linkers, and 64-bit binary tools | |
| OSLIB | OSLIB | The RISC OS-equivalent path for the OSLib library | Compilers, linkers, and 64-bit binary tools | |
| RISC_OSLIB | RISC_OSLIB | The RISC OS-equivalent path for the original Acorn RISC OS library | Compilers, linkers, and 64-bit binary tools | |
| ROBUILD_DIR | ROBUILD_DIR | The in-container path of the mapped built-output tree | Files, directories, and variables | |
| ROLIBRARY | ROLIBRARY | Directory containing the shipped RISC OS library utilities | Files, directories, and variables | |
| RORESOURCES_DIR | RORESOURCES_DIR | The in-container path of the shipped toolchain and resource tree | Files, directories, and variables | |
| ROSOURCE_DIR | ROSOURCE_DIR | The in-container path of the mapped source tree | Files, directories, and variables | |
| ROSYSMODULES | ROSYSMODULES | Directory containing the shipped RISC OS system modules | Files, directories, and variables | |
| ROTOOL_DIR | ROTOOL_DIR | Directory containing the host-side wrapper commands | Files, directories, and variables | |
| TBOX | TBOX | The RISC OS-equivalent path for the Toolbox client libraries | Compilers, linkers, and 64-bit binary tools | |
| TCPIPLIBS | TCPIPLIBS | The RISC OS-equivalent path for the TCP/IP client libraries | Compilers, linkers, and 64-bit binary tools | |