bug#37593: [core-updates] Linux-Libre fails to build on aarch64-linux

[Marius Bakke]

Berlin fails to build "linux-libre" for AArch64 on the 'core-updates'
branch.  Here is a recent attempt:

https://ci.guix.gnu.org/build/1758844/details

Log file for the latest build:

https://ci.guix.gnu.org/log/aq2rnrmjsgnyk8vmsm7aa3mgdj39dcwh-linux-libre-5.2.17.drv

This seems to be the salient bit:

CC [M]  arch/arm64/lib/xor-neon.o
In file included from 
/gnu/store/nr1aw4i32h7rmxwmq7d2da0mwcwg551j-glibc-2.29/include/stdint.h:34:0,
                 from 
/gnu/store/yckkivhynk4hjcr0iry9vbcyc0lqqnxj-gcc-7.4.0-lib/lib/gcc/aarch64-unknown-linux-gnu/7.4.0/include/arm_neon.h:33,
                 from ./arch/arm64/include/asm/neon-intrinsics.h:33,
                 from arch/arm64/lib/xor-neon.c:11:
/gnu/store/nr1aw4i32h7rmxwmq7d2da0mwcwg551j-glibc-2.29/include/bits/stdint-intn.h:27:19:
 error: conflicting types for 'int64_t'
 typedef __int64_t int64_t;
                   ^~~~~~~
In file included from ./include/linux/list.h:5:0,
                 from ./include/linux/module.h:9,
                 from arch/arm64/lib/xor-neon.c:10:
./include/linux/types.h:114:15: note: previous declaration of 'int64_t' was here
 typedef s64   int64_t;
               ^~~~~~~
In file included from 
/gnu/store/nr1aw4i32h7rmxwmq7d2da0mwcwg551j-glibc-2.29/include/stdint.h:37:0,
                 from 
/gnu/store/yckkivhynk4hjcr0iry9vbcyc0lqqnxj-gcc-7.4.0-lib/lib/gcc/aarch64-unknown-linux-gnu/7.4.0/include/arm_neon.h:33,
                 from ./arch/arm64/include/asm/neon-intrinsics.h:33,
                 from arch/arm64/lib/xor-neon.c:11:
/gnu/store/nr1aw4i32h7rmxwmq7d2da0mwcwg551j-glibc-2.29/include/bits/stdint-uintn.h:27:20:
 error: conflicting types for 'uint64_t'
 typedef __uint64_t uint64_t;
                    ^~~~~~~~
In file included from ./include/linux/list.h:5:0,
                 from ./include/linux/module.h:9,
                 from arch/arm64/lib/xor-neon.c:10:
./include/linux/types.h:112:15: note: previous declaration of 'uint64_t' was 
here
 typedef u64   uint64_t;
               ^~~~~~~~
make[1]: *** [scripts/Makefile.build:285: arch/arm64/lib/xor-neon.o] Error 1
make: *** [Makefile:1073: arch/arm64/lib] Error 2
make: *** Waiting for unfinished jobs....

Not sure what's going on here.  Ideas?

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