Building 'xtable-addons', locally, for just-released Linux 5.0,

   
https://build.opensuse.org/package/show/home:pgnd:Kernel:stable/xtables-addons

fails at

   
https://build.opensuse.org/public/build/home:pgnd:Kernel:stable/openSUSE_Leap_15.0/x86_64/xtables-addons/_log

    ...
    [53s]gcc -Wp, -MD,
/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions/.xt_condition.o.d
 -nostdinc -isystem /usr/lib64/gcc/x86_64-suse-linux/8/include
-I/usr/src/linux-5.0.0-lp150.4.g6bc6477/arch/x86/include
-I./arch/x86/include/generated  -I/usr/src/linux-5.0.0-lp150.4.g6bc6477/include
-I./include -I/usr/src/linux-5.0.0-lp150.4.g6bc6477/arch/x86/include/uapi
-I./arch/x86/include/generated/uapi
-I/usr/src/linux-5.0.0-lp150.4.g6bc6477/include/uapi -I./include/generated/uapi
-include /usr/src/linux-5.0.0-lp150.4.g6bc6477/include/linux/kconfig.h -include
/usr/src/linux-5.0.0-lp150.4.g6bc6477/include/linux/compiler_types.h 
-I/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions
-I/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions
-D__KERNEL__ -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs
-fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE
-Werror-implicit-function-declaration -Werror=implicit-int -Wno-format-security
-std=gnu89-mno-sse -mno-mmx -mno-sse2-mno-3dnow -mno-avx
-m64-falign-jumps=1-falign-loops=1-mno-80387-mno-fp-ret-in-387-mpreferred-stack-boundary=3-mskip-rax-setup
-mtune=generic -mno-red-zone -mcmodel=kernel -DCONFIG_X86_X32_ABI
-DCONFIG_AS_CFI=1-DCONFIG_AS_CFI_SIGNAL_FRAME=1-DCONFIG_AS_CFI_SECTIONS=1-DCONFIG_AS_FXSAVEQ=1-DCONFIG_AS_SSSE3=1-DCONFIG_AS_AVX=1-DCONFIG_AS_AVX2=1-DCONFIG_AS_AVX512=1-DCONFIG_AS_SHA1_NI=1-DCONFIG_AS_SHA256_NI=1-Wno-sign-compare
-fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
-mindirect-branch-register -fno-delete-null-pointer-checks -Wno-frame-address
-Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context
-O2--param=allow-store-data-races=0-Wframe-larger-than=2048-fstack-protector
-Wno-unused-but-set-variable -Wno-unused-const-variable
-fno-var-tracking-assignments -pg -mrecord-mcount -mfentry -DCC_USING_FENTRY
-fno-inline-functions-called-once -Wdeclaration-after-statement -Wvla
-Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow
-fno-merge-all-constants -fmerge-constants -fno-stack-check -fconserve-stack
-Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init
-fmacro-prefix-map=/usr/src/linux-5.0.0-lp150.4.g6bc6477/=
-Wno-packed-not-aligned  -DMODULE  -DKBUILD_BASENAME='"xt_condition"'
-DKBUILD_MODNAME='"xt_condition"' -c -o
/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions/xt_condition.o
/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions/xt_condition.c
   
[53s]/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions/xt_SYSRQ.c:
In function 'sysrq_crypto_init':
   
[53s]/home/abuild/rpmbuild/BUILD/xtables-addons-default-3.2/extensions/xt_SYSRQ.c:342:2:
error: implicit declaration of function 'do_gettimeofday'; did you mean
'do_settimeofday64'? [
    -Werror=implicit-function-declaration
    ]
    [53s]do_gettimeofday(&now);
    [53s]^~~~~~~~~~~~~~~
    [53s]do_settimeofday64
    [53s]cc1: some warnings being treated as errors
    ...


Doing some limited digging, I do find

    https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1811721/comments/6

which, although re: NVIDIA build, *does* point out

    ...
    change in kernel function do_gettimeofday to efi_gettimeofday
    ...

I haven't yet found the documentation of that change on kernel.org for v5.0 ...