go 1.19.1 - race detector tests - undefined reference to clock_gettime

[chargr]

What version of Go are you using (go version)?

1.19.1

Does this issue reproduce with the latest release?

Yes.

What operating system and processor architecture are you using (go env)?

CentOS 6

What did you do?

When building on CentOS 6/glibc-2.12 there seems to be a missing "-lrt" when linking these tests.
The same steps and tools work on CentOS 7.

#!/bin/sh
set -e

UTILS_GCC=/home/utils/gcc-12.2.0
UTILS_BINUTILS=/home/utils/binutils-2.37
UTILS_GIT=/home/utils/git-2.35.1
UTILS_GO=/home/utils/go-1.17.2

nproc=$( cat /proc/cpuinfo | grep processor | wc -l )

test -n "$PREFIX"

export PATH=${UTILS_GCC}/bin:$PATH
export PATH=${UTILS_BINUTILS}/bin:$PATH
export PATH=${UTILS_GIT}/bin:$PATH

export GOROOT_BOOTSTRAP=${UTILS_GO}
export GOROOT_FINAL=$PREFIX

if [ -z $USER ]
then
  export USER=$( whoami )
fi

cd src
./all.bash
cd -

What did you expect to see?

##### Testing race detector
ok      runtime/race    4.128s
ok      flag    0.036s
ok      net     0.130s
ok      os      0.134s
ok      os/exec 0.095s
ok      encoding/gob    0.063s
ok      flag    0.036s
ok      os/exec 0.088s

What did you see instead?

##### Testing race detector
# runtime/race.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-1368899331/000002.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    runtime/race [build failed]
FAIL
2022/09/30 17:01:27 Failed: exit status 2
# os.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-3372813736/000002.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

# flag.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-3452973005/000020.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    flag [build failed]
# encoding/gob.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-1645444054/000020.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

# net.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-3320890071/000020.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    net [build failed]
FAIL    os [build failed]
# os/exec.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-161142025/000024.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    os/exec [build failed]
FAIL    encoding/gob [build failed]
FAIL
2022/09/30 17:01:33 Failed: exit status 2
# flag.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-901642791/000020.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    flag [build failed]
# os/exec.test
/build/tmp/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/home/utils/binutils-2.37/bin/ld: /tmp/go-link-2461358603/000024.o: in function `__sanitizer::MonotonicNanoTime()':
gotsan.cpp:(.text+0x1586d): undefined reference to `clock_gettime'
collect2: error: ld returned 1 exit status

FAIL    os/exec [build failed]
FAIL
2022/09/30 17:01:33 Failed: exit status 2
go tool dist: FAILED

[cherrymui]

As documented in https://go.dev/doc/go1.19#runtime/race

On Linux, the race detector now requires at least glibc version 2.17 and GNU binutils 2.26.

Closing as working as intended. Thanks.