I am trying to build CockroachDB from sources on a RPi 3, following a couple of posts (this and this).
My RaspberryPi setup:
- OS: 2018-06-27-raspbian-stretch
- CPU: ARMv7 rev 4(v71)
- Mem: 1G + SWAP: 1.5G
- Go version: go1.11 linux/arm
I fixed a couple of errors regarding 3rd party libraries while 'make'ing it but now I got stuck on this:
pi@raspberrypi:~/work/go/src/github.com/cockroachdb/cockroach $ make build TAGS='stdmalloc' -j2
GOPATH set to /home/pi/work/go
go build -o cockroach -v -tags 'stdmalloc make arm_linux_gnueabihf_stdmalloc' -ldflags '-X github.com/cockroachdb/cockroach/pkg/build.typ=development -extldflags "" -X "github.com/cockroachdb/cockroach/pkg/build.tag=v2.2.0-alpha.00000000-668-gf76d921f42-dirty" -X "github.com/cockroachdb/cockroach/pkg/build.rev=f76d921f4262356fde83312d0f471262d995f1e0" -X "github.com/cockroachdb/cockroach/pkg/build.cgoTargetTriple=arm-linux-gnueabihf" -X "github.com/cockroachdb/cockroach/pkg/build.utcTime=2018/09/11 12:47:32"' ./pkg/cmd/cockroach
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x2372b8]
goroutine 1 [running]:
runtime/internal/atomic.goLoad64(0x3d65bdc, 0x0, 0x5607a20)
/usr/local/go/src/runtime/internal/atomic/atomic_arm.go:124 +0x1c
github.com/cockroachdb/cockroach/pkg/util/humanizeutil.(*BytesValue).String(0x55fb578, 0x5607a01, 0x56d9ea0)
/home/pi/work/go/src/github.com/cockroachdb/cockroach/pkg/util/humanizeutil/humanize.go:109 +0x28
github.com/cockroachdb/cockroach/pkg/cli.(*bytesOrPercentageValue).String(0x57b4920, 0x56d9ea0, 0x7)
/home/pi/work/go/src/github.com/cockroachdb/cockroach/pkg/cli/flags_util.go:492 +0x20
github.com/cockroachdb/cockroach/vendor/github.com/spf13/pflag.(*FlagSet).VarPF(0x54d3a00, 0x25cf778, 0x57b4920, 0x1ef3864, 0xe, 0x0, 0x0, 0x56d2900, 0x169, 0x56d9ea0)
/home/pi/work/go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/pflag/flag.go:778 +0x24
github.com/cockroachdb/cockroach/vendor/github.com/spf13/pflag.(*FlagSet).VarP(0x54d3a00, 0x25cf778, 0x57b4920, 0x1ef3864, 0xe, 0x0, 0x0, 0x56d2900, 0x169)
/home/pi/work/go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/pflag/flag.go:786 +0x5c
github.com/cockroachdb/cockroach/pkg/cli.VarFlag(0x54d3a00, 0x25cf778, 0x57b4920, 0x1ef3864, 0xe, 0x0, 0x0, 0x0, 0x0, 0x1fa4462, ...)
/home/pi/work/go/src/github.com/cockroachdb/cockroach/pkg/cli/flags.go:129 +0x6c
github.com/cockroachdb/cockroach/pkg/cli.init.5()
/home/pi/work/go/src/github.com/cockroachdb/cockroach/pkg/cli/flags.go:324 +0x6c0
Makefile:1288: recipe for target 'docs/generated/settings/settings.html' failed
make: *** [docs/generated/settings/settings.html] Error 2
make: *** Deleting file 'docs/generated/settings/settings.html'
Any ideas what might be wrong?
thanks for the question. I was the original author of that blog post. It looks like you're running into an issue related to https://github.com/golang/go/issues/9959. It looks like golang requires 64-bit alignment of 64-bit words when atomically accessed. This is somewhat tricky to enforce across an entire project. Still, we can try to get this working by removing the atomic access on pkg/util/humanizeutil/humanize.go:109 (which doesn't look necessary) and replacing it with return IBytes(*b.val). That should at least get you past this roadblock. There may be other issues you run into after this though. Unfortunately, CockroachDB has never set up CI around a 32-bit ARMv7 build because 32-bit architectures have never been officially supported by the project.
However, a 64-bit ARMv8 build is more actively maintained. In fact, an entire cross-compilation toolchain has been introduced to build CockroachDB for ARMv8 on an x86_64 host. Compilation using this toolchain can be kicked off by running build/builder.sh mkrelease arm64-linux-gnueabi. The resulting binary can be dropped onto a RaspberryPi running a 64-bit OS like https://wiki.debian.org/RaspberryPi3. I actually tried this out last week and ran into no problems.