cannot run binary built for Solaris

[apopiak]

I'm trying to cross-compile a super small test project for Solaris, but cross fails with could not execute process '/target/x86_64-sun-solaris/release/crosstest' (never executed).
My command: cross run --release --target=x86_64-sun-solaris -v on a Ubuntu 17.04 system.
I went into the docker container and it's a Ubuntu container so I'm not surprised that the Solaris binary cannot execute.
I'm confused where I went wrong because I saw the PR that added Solaris support.

[japaric]

As the README states there's cross compilation support for Solaris targets but not run / test support.

I went into the docker container and it's a Ubuntu container so I'm not surprised that the Solaris binary cannot execute.

Other targets have run / test support via QEMU / Wine. Nobody has suggested a way to do the same for Solaris -- QEMU user emulation may not work but QEMU system emulation would probably work.

[apopiak]

Thanks, for clarifying. Got tripped up by that detail I guess. Is it possible to cross-compile rustc and or cargo for Solaris?

[japaric]

Is it possible to cross-compile rustc and or cargo for Solaris?

Cross compiling Cargo works for me:

$ cross build --target sparcv9-sun-solaris
$ file target/sparcv9-sun-solaris/debug/cargo
target/sparcv9-sun-solaris/debug/cargo: ELF 64-bit MSB executable, SPARC V9, total store ordering, version 1 (SYSV), dynamically linked, interpreter /usr/lib/sparcv9/ld.so.1, with debug_info, not stripped

I don't know if you can use Cross to cross compile rustc. rust-lang/rust has its own build system called bootstrap that calls Cargo to build std, rustc, etc. Perhaps you could hack it to make it call Cross instead of Cargo? I haven't tried.

[apopiak]

Just FYI, I'm trying to build for x86_64-sun-solaris. I've tried to follow your reddit post on cross-compiling rust, but that is based on the old makefile approach and doesn't seem to be working.
When following the commands from this github issue I get a compiled libstd, but not rustc. Is there any documentation on how to cross-compile rustc that you're aware of? I don't seem to be able to guess based on the build system options and random posts I find on the interwebs...

[japaric]

I haven't cross compiled rustc in a long time but it went like this, iirc:

$ # export CC, AR and CXX
$ export CC_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-gcc

$ # I want to cross compile a toolchain (rustc) for this host
$ ./configure --host=arm-unknown-linux-gnueabihf

$ # bootstrap the compiler and cross compile rustc
$ # there are ways to do this faster by not bootstraping the compiler but I don't remember them anymore
$ ./x.py

x.py is documented here.

[apopiak]

Thank you for pointing that out. I thought I could set WHERE I am building by hand (by setting the host parameter) ^^ BTW. Thank you so much for all the cross compilation stuff you've already figured out and the tools you've built, it's been a great help! 2017-11-16 0:54 GMT+01:00 Jorge Aparicio <notifications@github.com>:

…

I haven't cross compiled rustc in a long time but it went like this, iirc: $ # export CC, AR and CXX $ export CC_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-gcc $ # I want to cross compile a toolchain (rustc) for this host $ ./configure --host=arm-unknown-linux-gnueabihf $ # bootstrap the compiler and cross compile rustc $ # there are ways to do this faster by not bootstraping the compiler but I don't remember them anymore $ ./x.py x.py is documented here <https://github.com/rust-lang/rust/blob/master/src/bootstrap/README.md>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#150 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGoVYhy1lDsGLJyTYVuFlBfwQPKhYK1oks5s23m2gaJpZM4Qa2ru> .