Failure signing packages while using SDK

For Developers
1

I'm trying to use the SDK to build some custom packages on top of 22.03.3. My packages build, but the build fails on the package signing step:

Signing package index...
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
Cannot open file '/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64/key-build' for reading
make[2]: *** [package/Makefile:88: package/index] Error 1

I found a similar issue in an older discussion: Can't compile IPK with SDK ("key-build" signing key is missing). The suggested workaround of running make base-files doesn't appear to work.

How can I fix this problem? Can we update the SDK documentation so that it explains this necessary step?

My apologies if I missed something basic on the SDK page.

2

Following a quick conversation with @tmn505 on IRC:

You can run scripts/feeds install base-files and then run make; this will generate keys. For me the build still failed as I'm not able to completely build base-files, this appears to be related to the bug discussed here: https://github.com/openwrt/openwrt/pull/10255

However, once doing this I am able to build and fully package my own custom packages without issue:

sysadmin@stanazcac-build3-prd:/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64$ make package/sscep/compile
 make[1] package/sscep/compile
 make[2] -C package/toolchain compile
 make[2] -C package/kernel/linux compile
 make[2] -C feeds/base/package/kernel/cryptodev-linux compile
 make[2] -C feeds/base/package/libs/openssl compile
 make[2] -C feeds/packages/net/sscep compile
sysadmin@stanazcac-build3-prd:/home/johnf/src/openwrt-sdk-22.03.3-ramips-mt76x8_gcc-11.2.0_musl.Linux-x86_64$
3

If you run the command ./staging_dir/host/bin/usign -G -s ./key-build -p ./key-build.pub -c "Local build key" from the base of the SDK directory then you'll generate keys and be able to build without packaging errors.

4

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