Krzesimir Nowak 63c9e114b2 sys-kernel/coreos-modules: Explicitly disable stack variable initialization ... So far, we didn't have the stack variable initialized, so we probably can keep it like that for a little while longer. The stack variable initialization gets enabled by default with gcc 12, because gcc 12 supports the -ftrivial-auto-var-init flag. Such configuration is saved, and is reused for building the external modules. It's something that we normally would want to have enabled, but this breaks building falco-module, because despite falco Docker images having multiple versions of gcc, the versions go from 5 to 8, and neither support the -ftrivial-auto-var-init flag. The error is as follows: * Running dkms build failed, dumping /var/lib/dkms/falco/e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931/build/make.log (with GCC /usr/bin/gcc-8) DKMS make.log for falco-e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931 for kernel 5.15.96-flatcar (x86_64) Fri Mar 3 16:17:58 UTC 2023 '/tmp/falco-dkms-make' -C /lib/modules/5.15.96-flatcar/build M=/var/lib/dkms/falco/e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931/build modules make[1]: Entering directory '/host/lib/modules/5.15.96-flatcar/build' warning: the compiler differs from the one used to build the kernel The kernel was built by: x86_64-cros-linux-gnu-gcc (Gentoo Hardened 12.2.1_p20230121-r1 p10) 12.2.1 20230121 You are using: gcc-8 (Debian 8.3.0-6) 8.3.0 CC [M] /var/lib/dkms/falco/e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931/build/main.o gcc-8: error: unrecognized command line option '-ftrivial-auto-var-init=zero' make[2]: *** [/host/lib/modules/5.15.96-flatcar/source/scripts/Makefile.build:289: /var/lib/dkms/falco/e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931/build/main.o] Error 1 make[1]: *** [../source/Makefile:1905: /var/lib/dkms/falco/e1d0fd9b043f1c7dfd91c9d030c11cfe2c062931/build] Error 2 make[1]: Leaving directory '/host/lib/modules/5.15.96-flatcar/build' make: *** [Makefile:16: all] Error 2 Using one compiler for the kernel and then a different compiler to build the module certainly made me to raise my eyebrows. Maybe we should rather try building a module using the developer container, and if this succeeds - document it.		2023-03-09 15:23:09 +01:00
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src/third_party/coreos-overlay	sys-kernel/coreos-modules: Explicitly disable stack variable initialization	2023-03-09 15:23:09 +01:00