all: pretend to be linux/arm in baremetal targets #247
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aykevl
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Tested examples/blinky1 and examples/echo on Arduino Uno and PCA10040. |
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Tested a few examples from the Did you happen to have a chance to try to build something for actual linux arm like on the raspberry pi? |
So far, we've pretended to be js/wasm in baremetal targets to make the
stdlib happy. Unfortunately, this has various problems because
syscall/js (a dependency of many stdlib packages) thinks it can do JS
calls, and emulating them gets quite hard with all changes to the
syscall/js packages in Go 1.12.
This commit does a few things:
* It lets baremetal targets pretend to be linux/arm instead of
js/wasm.
* It lets the loader only select particular packages from the src
overlay, instead of inserting them just before GOROOT. This makes it
possible to pick which packages to overlay for a given target.
* It adds a baremetal-only syscall package that stubs out almost all
syscalls.
aykevl
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Rebased on top of dev.
In theory that should have been tested with qemu in CircleCI, but just to be sure I built a few examples on my amd64 laptop, copied them over to my rpi3 and ran them there. They all worked perfectly. |
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Also note that I copied a few files over from the Go project, but as I left the copyright note in the header intact I think that should be fine. |
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Merging. |
This was referenced Mar 23, 2019
Merged
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So far, we've pretended to be js/wasm in baremetal targets to make the stdlib happy. Unfortunately, this has various problems because syscall/js (a dependency of many stdlib packages) thinks it can do JS calls, and emulating them gets quite hard with all changes to the syscall/js packages in Go 1.12.
This commit does a few things:
This should help with Go 1.12 support, see #211.