[Bug 2863] New: IcedTea doesn't pass through build and host triplets to OpenJDK's configure

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=2863

            Bug ID: 2863
           Summary: IcedTea doesn't pass through build and host triplets
                    to OpenJDK's configure
           Product: IcedTea
           Version: 8-hg
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: IcedTea
          Assignee: gnu.andrew at redhat.com
          Reporter: chewi at gentoo.org
                CC: unassigned at icedtea.classpath.org

Created attachment 1508
  --> http://icedtea.classpath.org/bugzilla/attachment.cgi?id=1508&action=edit
Patch against Makefile.am

This resulted in the following when trying to build with a 32-bit userspace on
a 64-bit kernel.

checking size of int *... 4
configure: The tested number of bits in the target (32) differs from the number
of bits expected to be found in the target (64).
configure: I'll retry after setting the platforms compiler target bits flag to
-m64

--build=i686-pc-linux-gnu --host=i686-pc-linux-gnu was passed to IcedTea but
OpenJDK used guessed values of x86_64-unknown-linux-gnu IIRC.

Attached is a patch that passes these arguments through. OpenJDK recommends
using --openjdk-target instead but you cannot use this in conjunction with
--build. Given that it is primarily distributions that build IcedTea from
source, I think it is reasonable to assume they will always give sensible
build/host values. If they give none at all, the values guessed by IcedTea's
configure will simply match those that OpenJDK's configure would have used
anyway.

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