Variable Reference

Build with Actions · Quick Reference

Not all variables need to be set. Configure only what your build requires.

CMDS — Build Commands

Variable	Description
CUSTOM_CMDS	Typically used only to declare CLANG_TRIPLE
EXTRA_CMDS	Build flags, e.g. LD=ld.lld LLVM=1 LLVM_IAS=1

KERNEL — Kernel & Toolchain Sources

Variable	Description
KERNEL_SOURCE	Kernel source Git URL
KERNEL_BRANCH	Kernel source branch
CLANG_SOURCE	Supports .git / .tar.gz / .tar.xz / .xz / .zip / antman
CLANG_BRANCH	Required only for .git sources
GCC_GNU	true to use the system's built-in GNU GCC; leave other GCC variables empty
GCC_XX_SOURCE	Provide both ARM and ARM64 versions (same format as CLANG)
GCC_XX_BRANCH	Required only for .git sources

DEFCONFIG

Variable	Description
DEFCONFIG_SOURCE	URL to an extra custom defconfig file (single file only — no .git or archives)
DEFCONFIG_NAME	Full defconfig name, e.g. vendor/mi845_defconfig
DEFCONFIG_ORIGIN_IMAGE	boot.img URL — used to extract a defconfig or as input for MKBOOTIMG packaging
DEFCONFIG_FROM_BOOT	true to extract the defconfig from the boot.img
BOOT_SOURCE	Alternative to DEFCONFIG_ORIGIN_IMAGE when only MKBOOTIMG packaging is needed

KERNELSU / SUSFS

Variable	Description
KERNELSU_SOURCE	KernelSU fork source URL (typically a .sh script; use .git for special cases)
KERNELSU_BRANCH	KernelSU fork branch
KERNELSU_AUTO_GET	true to skip manual SOURCE/BRANCH setup
KERNELSU_AUTO_FORK	Choose from: xxksu (no SuSFS support) / rsuntk / sukisu / resukisu / next
KERNELSU_METHOD	Integration method: shell (default) / manual / only
SUSFS_ENABLE	true to enable SuSFS
SUSFS_FIXED	true to apply a secondary patch (used with the SuSFS patch variables below)
PATCHES_SOURCE	GitHub path to your SuSFS secondary patch repo (e.g. Username/RepoName)
PATCHES_BRANCH	Corresponding branch
SUSFS_FOLDER_FIXED	Directory containing the patch file (e.g. Patch); leave empty if none
SUSFS_PATCH_FIXED	Patch filename without the .patch extension (e.g. susfs)

PACK — Packaging

Variable	Description
PACK_METHOD	Anykernel3 or MKBOOTIMG
PACK_KMODULES	true to bundle compiled .ko kernel modules into the Anykernel3 package

KPM

Variable	Description
KPM_ENABLE	true to add CONFIG_KALLSYMS=y and CONFIG_KALLSYMS_ALL=y to defconfig
KPM_INLINE	true to auto-inject KPM support (SukiSU-Ultra / ReSukiSU only)
KPM_KPATCH_NEXT	true to use KernelSU Next's modular KPM solution (KPatch-Next)
KPM_PATCH_SOURCE	URL to the patch binary; leave as default in most cases

DTBO

Variable	Description
NEED_DTBO	true to inject DTBO generation code and build DTBO (not all devices need this)
NEED_SAFE_DTBO	Set both this and NEED_DTBO to true to use MKDTBOIMG for DTBO generation

DTB

Variable	Description
GENERATE_DTB	true to generate a DTB device tree file and bundle it into the kernel
GENERATE_CHIP	Chipset name; default is qcom, can also be mediatek or a custom string

Baseband Guard

Variable	Description
BASEBAND_GUARD_ENABLE	true to enable Baseband Guard
BASEBAND_GUARD_BOOT	true to enable boot partition write protection (prevents tools like Kernel Flasher from modifying the boot partition)

Debugging

Variable	Description
BUILD_DEBUGGER	true to halt at the first failure, archive error files, and upload them
SKIP_PATCH	Used with BUILD_DEBUGGER — skips all failed patch steps to allow compilation to continue

defconfig Merging

Variable	Description
BUILD_OTHER_CONFIG	true to merge additional config files into the main defconfig
MERGE_CONFIG_FILES	Comma-separated list of extra .config files, e.g. "vendor/debugfs.config,vendor/lahaina_QGKI.config"

Miscellaneous

Variable	Description
PYTHON_VERSION	Set to "2" to enable Python 2 on Ubuntu 20.04/22.04
FREE_MORE_SPACE	true to free up additional disk space (~4 min overhead; non-container Ubuntu only)
REKERNEL_ENABLE	true to embed Re:Kernel; recommended for non-Google-ecosystem users running freezer apps
HOOK_METHOD	Leave as default (Normal / Syscall; Syscall is the current standard)
KERNEL_PATCH	For kernel version ≤ 4.9 only — applies a backport patch when enabled
HIDE_STUFF	true to inject code that obscures some LineageOS traces (limited effectiveness)