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build: fix DESTCPU detection on non-Intel platforms #6310

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richardlau
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  • the commit message follows commit guidelines
Affected core subsystem(s)

build

Description of change

make binary attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture (i.e. it was checking for x64
and assuming x86 otherwise).

@richardlau
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cc @mhdawson

@mscdex mscdex added the build Issues and PRs related to build files or the CI. label Apr 20, 2016
@mhdawson mhdawson self-assigned this Apr 20, 2016
@mhdawson
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Just wondering which case this covers:

+ifeq ($(findstring powerpc,$(shell uname -p)),powerpc)
+DESTCPU ?= ppc
+else

otherwise LGTM

@richardlau
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That case covers AIX.

@jbergstroem
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@nodejs/build

@richardlau
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Note about the implementation:
I chose to extend what was already there in the makefile. Using variants of uname I don't see a way of detecting 32-bit/64-bit on AIX.

With regards to host architecture detection there are two other places this is done in the build scripts:

  • in host_arch_cc() in configure -- configure sets the target arch to the detected host arch if --dest-cpu is not specified (in the case of make binary, configure is run with --dest-cpu=$(DESTCPU))
  • in GuessArchitecture() in tools/utils.py -- This is used by tools/test.py and for some reason only selects 32-bit architectures

@richardlau
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@mhdawson I've updated the commit so on AIX it defaults to 64-bit as we discussed on the phone.

@mhdawson
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LGTM

@mhdawson
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@jbergstroem just wondering if you can take a quick look and let me know if you have any concerns with this.

@joaocgreis
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I can't claim to know enough of this to stamp it, but since it uses only ?= it seems quite safe to me.

However, at least ARM64 is missing:

$ uname -m
aarch64

`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.
@richardlau
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Thanks, rebased onto latest master and added aarch64.

@MylesBorins
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ci: https://ci.nodejs.org/job/node-test-pull-request/2614/

overall the changes to the makefile LGTM

How was ppc + arm being detected and built correctly before?

@rvagg
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rvagg commented May 13, 2016

sgtm

might be time to pull out all of this ARCH and DESTCPU stuff into a script (bash or perl) in tools

@jbergstroem
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@rvagg we could use python's os stuff. Would align well with our build stack.

@rvagg
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rvagg commented May 13, 2016

@jbergstroem sounds good.

To clarify though, that shouldn't hold up this PR if the IBM folks agree.

@thealphanerd we manually specify both ARCH and DESTCPU in all (?) our build machines so we don't get caught up by this, it's obviously a concern for end-users on any of these platforms, however.

@jbergstroem
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@rvagg we don't manually specify it on all our machines; mainly release-related stuff -- I think we should avoid it where possible since we'd be testing the configure process as well. With that said, in cases we have to, we should obviously override (esp DESTCPU).

@jbergstroem
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LGTM from me as well btw. Just haven't tried all variations of uname.

@mhdawson
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Looks like we have enough LGTMs to land, will do that now

mhdawson pushed a commit that referenced this pull request May 13, 2016
`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.

PR-URL: #6310
Reviewed-By: Johan Bergström <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
@mhdawson
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Landed as 830a726

@mhdawson mhdawson closed this May 13, 2016
evanlucas pushed a commit that referenced this pull request May 17, 2016
`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.

PR-URL: #6310
Reviewed-By: Johan Bergström <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
MylesBorins pushed a commit that referenced this pull request Jun 1, 2016
`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.

PR-URL: #6310
Reviewed-By: Johan Bergström <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
MylesBorins pushed a commit that referenced this pull request Jun 23, 2016
`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.

PR-URL: #6310
Reviewed-By: Johan Bergström <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
MylesBorins pushed a commit that referenced this pull request Jun 24, 2016
`make binary` attempts to auto detect DESTCPU if not set, but was
assuming being on an Intel architecture.

PR-URL: #6310
Reviewed-By: Johan Bergström <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
@MylesBorins MylesBorins mentioned this pull request Jun 24, 2016
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7 participants