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secubox-openwrt/package/secubox/secubox-app-netifyd/BUILDROOT-BUILD.md

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Building Netifyd with OpenWrt Buildroot

Overview

Netifyd requires full OpenWrt buildroot for building because it needs system libraries that are not available in the SDK.

Automatic Build (Recommended)

The local-build.sh script automatically detects netifyd and uses OpenWrt buildroot:

./secubox-tools/local-build.sh build netifyd

This will:

  1. Download OpenWrt 24.10.5 source (~500 MB)
  2. Setup feeds
  3. Copy SecuBox packages
  4. Install netifyd from SecuBox feed
  5. Configure and build netifyd

Build time:

  • First build: 15-30 minutes (downloads toolchain, builds dependencies)
  • Subsequent builds: 2-5 minutes (incremental)

What Gets Built

The buildroot provides all required dependencies:

  • libmnl - Minimal Netlink library
  • libnetfilter-conntrack - Connection tracking
  • libpcap - Packet capture
  • libjson-c - JSON parsing
  • libcurl - HTTP client
  • Kernel modules: nf_conntrack, nfnetlink, etc.

Output

After successful build:

# Package location
./build/x86-64/netifyd_5.2.1-1_x86_64.ipk

# Also findable at
./openwrt/bin/packages/x86_64/secubox/netifyd_5.2.1-1_x86_64.ipk

Manual Build

If you prefer manual control:

cd openwrt/

# Configure
make menuconfig
# Select: Network > netifyd

# Build
make package/netifyd/compile V=s

Why Not SDK?

The SDK cannot build netifyd because:

  • SDK only includes application-level library stubs
  • Netifyd needs kernel-level libraries (libmnl, libnetfilter-conntrack)
  • These libraries must be compiled against the target system
  • Only full buildroot provides the complete dependency chain

Troubleshooting

Issue: Build fails with "libmnl not found"

Cause: Using SDK instead of buildroot

Fix: The script should auto-detect and use buildroot. If not:

# Ensure you're using the build command, not compiling directly in SDK
./secubox-tools/local-build.sh build netifyd

Issue: Build takes too long

Normal: First build downloads toolchain and compiles base libraries (15-30 min)

Speed up: Use faster machine or pre-compiled SDK for dependencies

Issue: Out of disk space

Cause: OpenWrt buildroot needs ~10 GB

Fix: Free up space or use different build directory:

OPENWRT_DIR=/path/to/large/disk/openwrt ./secubox-tools/local-build.sh build netifyd

Comparison: SDK vs Buildroot

Feature SDK Buildroot
Size ~300 MB ~2 GB
Build time Fast (2-5 min) Slow first time (15-30 min)
Can build apps ✅ Yes ✅ Yes
Can build system daemons ❌ No ✅ Yes
Kernel libraries ❌ No ✅ Yes
Full dependency tree ❌ No ✅ Yes

Netifyd needs: Buildroot ✅

See Also