Matt Layher 5739886226 unix: implement alarm(2) on Linux on all GOARCH except arm* and riscv. ...

SYS_ALARM is not defined for arm* or riscv, but is available for all other
Linux GOARCH values. Ian suggested I create a new file with build tags
matching these constraints.

In order to handle special case files such as this one (which don't match the
existing syscall_linux_goarch.go scheme), I've added logic to the Linux build
system which can evaluate the build constraints in a given file to determine
whether that file should be appended to the arguments for a given target.

Change-Id: I0136534522a26a0ce495308f63953546ea6bb8e5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/383734
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>

2022-02-07 23:40:03 +00:00

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