[ruby-core:52276] [ruby-trunk - Bug #7856][Feedback] The usage of try_run in extconf.rb is broken when crosscompiling

Issue #7856 has been updated by luislavena (Luis Lavena).

Status changed from Open to Feedback
Priority changed from High to Normal

Hello,

Can you tell us more details about the platform you're targeting? The compiler you're using and what platform are you running it in?

Also, can you provide the exact output of mkmf.log and the error you're getting?

I can tell that I successfully cross-compile Ruby in OSX/Linux targeting Windows (MinGW) without issues.

The more details you provide, the better we will be able to spot the issue.

Thank you.
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Bug #7856: The usage of try_run in extconf.rb is broken when crosscompiling
https://bugs.ruby-lang.org/issues/7856#change-36303

Author: luizluca (Luiz Angelo Daros de Luca)
Status: Feedback
Priority: Normal
Assignee: 
Category: ext
Target version: 1.9.2
ruby -v: 1.9.2p0


Hello,

Every "try_run" inside extconf.rb (found in some ext/*/extconf.rb) tries to compile and run the generated binary. However,
when crosscompiling, this simply can't work.

Please, make try_run be ignored (or just test the compilation) when crosscompiling is detected. I tested this only at 1.9.2
but this might affect all versions that uses try_run to test dependencies.

Taking socket as an example, this can be solved individually, from the original:

getaddr_info_ok = (enable_config("wide-getaddrinfo") && :wide) ||
  (checking_for("wide getaddrinfo") {try_run(<<EOF)} && :os)

to:

getaddr_info_ok = (enable_config("wide-getaddrinfo") && :wide) ||
  (CROSS_COMPILING && :cross) ||
  (checking_for("wide getaddrinfo") {try_run(<<EOF)} && :os)

or just allow the check for every try_run to be manually defined in ./configure script
like:

getaddr_info_ok = (enable_config("wide-getaddrinfo") && :wide) ||
  (enable_config("ignore-getaddr_info-check") && :manual ) ||
  (CROSS_COMPILING && <warn the user to use --ignore-getaddr_info-check> && false) ||
  (checking_for("wide getaddrinfo") {try_run(<<EOF)} && :os)

Regards,



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