Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

build: arm64 machine building with 32-bit arm GOROOT_BOOTSTRAP fails #35411

Open
bradfitz opened this issue Nov 7, 2019 · 0 comments
Open

build: arm64 machine building with 32-bit arm GOROOT_BOOTSTRAP fails #35411

bradfitz opened this issue Nov 7, 2019 · 0 comments
Milestone

Comments

@bradfitz
Copy link
Contributor

@bradfitz bradfitz commented Nov 7, 2019

This is super low priority, but filing it because I hit it while experimenting.

ARM64 machines can run ARM code.

On an ARM64 machine I can build Go with make.bash and get ARM64 binaries, of course.

And I can run make.bash with GOARCH=arm, GOHOSTARCH=arm, CC_FOR_TARGET=arm-linux-gnueabihf-gcc, and get ARM binaries.

But if I set GOROOT_BOOTSTRAP to a 32-bit ARM GOROOT (from golang.org/dl), I can't build GOARCH=arm64, regardless of GOHOSTARCH or CC_FOR_TARGET settings.

I get either:

# runtime/cgo
gcc: error: unrecognized command line option '-marm'; did you mean '-fasm'?
go tool dist: FAILED: /home/ubuntu/gotip/pkg/tool/linux_arm/go_bootstrap install -gcflags=all= -ldflags=all= std cmd: exit status 2

or e.g.

$ GOROOT_BOOTSTRAP=$HOME/arm/go GOARCH=arm64 GOHOSTARCH=arm64 time ./make.bash 
Building Go cmd/dist using /home/ubuntu/arm/go. (go1.13.4 linux/arm)
Building Go toolchain1 using /home/ubuntu/arm/go.
Building Go bootstrap cmd/go (go_bootstrap) using Go toolchain1.
Building Go toolchain2 using go_bootstrap and Go toolchain1.
Building Go toolchain3 using go_bootstrap and Go toolchain2.
HASH[build runtime/internal/sys]
HASH[build runtime/internal/sys]: "devel +198f0452b0 Thu Nov 7 02:33:31 2019 +0000"
HASH[build runtime/internal/sys]: "compile\n"
HASH[build runtime/internal/sys]: "goos linux goarch arm64\n"
HASH[build runtime/internal/sys]: "import \"runtime/internal/sys\"\n"
HASH[build runtime/internal/sys]: "omitdebug false standard true local false prefix \"\"\n"
HASH[build runtime/internal/sys]: "modinfo \"\"\n"
HASH[build runtime/internal/sys]: "compile NrSOTEoiK7YosNNhxRnR [] []\n"
HASH[build runtime/internal/sys]: "=\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/arch.go: d9b0b7e72538d421b2607acaba60ca49f20ef584b3d1d191c6729e35fbb8101d
HASH[build runtime/internal/sys]: "file arch.go 2bC35yU41CGyYHrKumDK\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/arch_arm64.go: 2fe66f385ea5a1e9da31d7674ec907c441ba78c4ea17aaec217330fcb0105474
HASH[build runtime/internal/sys]: "file arch_arm64.go L-ZvOF6loenaMddnTskH\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/intrinsics.go: 8b469a461e1d983706e0b3635715ce70691adc5db7c4e067b88cc59f40cd66f4
HASH[build runtime/internal/sys]: "file intrinsics.go i0aaRh4dmDcG4LNjVxXO\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/stubs.go: 23b3e5c631b086fe7a2dec4bf044600e034bf6a8eeb25e0a19efc4ce6311423d
HASH[build runtime/internal/sys]: "file stubs.go I7PlxjGwhv56LexL8ERg\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/sys.go: 55e021891200a7e6a5c371c8a1ab71b6c15aeb16ea6c1b192185d17df8c8b18f
HASH[build runtime/internal/sys]: "file sys.go VeAhiRIAp-alw3HIoatx\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/zgoarch_arm64.go: 4902d69a4a20421a799ba2e2c07d8b279aeb73993cbdcb9358c703809446e436
HASH[build runtime/internal/sys]: "file zgoarch_arm64.go SQLWmkogQhp5m6LiwH2L\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/zgoos_linux.go: 806c088d7491b4560a28a5af86a52b459ebbf155ea455af873baa0bf697355e4
HASH[build runtime/internal/sys]: "file zgoos_linux.go gGwIjXSRtFYKKKWvhqUr\n"
HASH /home/ubuntu/gotip/src/runtime/internal/sys/zversion.go: bf440002e6d73c527f836969303ab545ace7032498d0fa287bd8ba5e335d06cf
HASH[build runtime/internal/sys]: "file zversion.go v0QAAubXPFJ_g2lpMDq1\n"
HASH[build runtime/internal/sys]: 112806be5693d6fbb50a08689c94b2089080eac354c33437afda01d394b49e79
runtime/internal/sys true
go tool dist: unexpected stale targets reported by /home/ubuntu/gotip/pkg/tool/linux_arm64/go_bootstrap list -gcflags="" -ldflags="" for [cmd/asm cmd/cgo cmd/compile cmd/link runtime/internal/sys]:
	STALE cmd/asm: stale dependency: internal/cpu
	STALE cmd/cgo: stale dependency: internal/cpu
	STALE cmd/compile: stale dependency: internal/cpu
	STALE cmd/link: stale dependency: internal/cpu
	STALE runtime/internal/sys: build ID mismatch

Command exited with non-zero status 2

This is obviously somewhat contrived, using a 32-bit Go toolchain on a 64-bit host for bootstrapping a 64-bit build.... but I also think it should work and don't see what I'm missing.

/cc @ianlancetaylor

@ianlancetaylor ianlancetaylor added this to the Backlog milestone Nov 8, 2019
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Linked pull requests

Successfully merging a pull request may close this issue.

None yet
3 participants
You can’t perform that action at this time.