Joe McDonnell created KUDU-3475:
-----------------------------------
Summary: Build on Ubuntu 20 ARM hits errors due to redeclaration
of vld1q_u8_x4
Key: KUDU-3475
URL: https://issues.apache.org/jira/browse/KUDU-3475
Project: Kudu
Issue Type: Bug
Components: build
Affects Versions: 1.17.0
Reporter: Joe McDonnell
When building on an Ubunu 20 ARM machine, it now uses GCC 9.4, which includes a
definition of vld1q_u8_x4. The build fails with messages like this:
{noformat}
20:28:53 In file included from
/home/ubuntu/kudu/src/kudu/util/group_varint-inl.h:25,
20:28:53 from
/home/ubuntu/kudu/src/kudu/util/group_varint.cc:18:
20:28:53 /home/ubuntu/kudu/src/kudu/util/sse2neon.h:184:27: error:
‘uint8x16x4_t vld1q_u8_x4(const uint8_t*)’ redeclared inline without
‘gnu_inline’ attribute
20:28:53 184 | FORCE_INLINE uint8x16x4_t vld1q_u8_x4(const uint8_t *p) {
20:28:53 | ^~~~~~~~~~~
20:28:53 In file included from /home/ubuntu/kudu/src/kudu/util/sse2neon.h:66,
20:28:53 from
/home/ubuntu/kudu/src/kudu/util/group_varint-inl.h:25,
20:28:53 from
/home/ubuntu/kudu/src/kudu/util/group_varint.cc:18:
20:28:53 /usr/lib/gcc/aarch64-linux-gnu/9/include/arm_neon.h:18122:1: note:
‘uint8x16x4_t vld1q_u8_x4(const uint8_t*)’ previously defined here
20:28:53 18122 | vld1q_u8_x4 (const uint8_t *__a)
20:28:53 | ^~~~~~~~~~~{noformat}
There have been major changes in the logic of sse2neon.h over the past couple
years. The code uses a different name to avoid collisions and it has more
sophisticated version checks.
See these commits:
[https://github.com/DLTcollab/sse2neon/commit/e96c9818e25f019629a6b96f62382d42179eab3c]
[https://github.com/DLTcollab/sse2neon/commit/26011f2ca7f22fd2b93b85fa84a2465ffc489710]
One possible fix is to update sse2neon to a more recent version.
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