[Haskell-cafe] Haskell on OpenWRT

[Tomas Carnecky]

I was able to compile Haskell for a mips-linux-musl target (
https://onion.io/omega). Most problems were due to the different
architecture (MIPS) than musl. Once you have a C cross-compiler (I used
http://crosstool-ng.org/ to built the cross-compiler toolchain), compiling
GHC as a cross compiler for that target and then a Haskell application
shouldn't be a problem.

If you have enough disk space on the target, I would suggest that you
compile your Haskell application into a static binary.

On Sat, Apr 9, 2016 at 10:47 AM Lana Black <lanablack at amok.cc> wrote:

> You will probably have better luck using ghc with musl‎.
>
> Check out this thread: ‎
> https://mail.haskell.org/pipermail/haskell-cafe/2015-May/119843.html
>
>   Original Message
> From: Patrick Pelletier
> Sent: Saturday, April 9, 2016 7:54 AM
> To: haskell-cafe
> Subject: [Haskell-cafe] Haskell on OpenWRT
>
> Has anyone had any success running Haskell programs on OpenWRT?
>
> Specifically, I'm running OpenWRT on x86_64, so processor architecture
> shouldn't be an issue. However, by default OpenWRT uses musl as its C
> library, so binaries from a "normal" Linux system wouldn't be compatible
> with OpenWRT.
>
> I attempted to get around this problem by building an OpenWRT image with
> glibc as the C library. In theory, that ought to solve the problem. In
> practice, my program (a simple hello-world type program, which runs fine
> on Ubuntu) hung, printing nothing, using nearly all of one core, and was
> unkillable by any signal other than SIGKILL. If left alone to run, it
> eventually used all available memory and then died.
>
> I took a look at ldd, to see if there were any clues there. On my
> Ubuntu 12.04 machine, where I compiled the program (using ghc 7.4.1), I
> get:
>
> ppelletier at patrick64:~/programming/haskell$ ldd contact
> linux-vdso.so.1 => (0x00007fff36f50000)
> libgmp.so.10 => /usr/lib/x86_64-linux-gnu/libgmp.so.10
> (0x00007f8d49cf8000)
> libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6
> (0x00007f8d49af0000)
> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8d497f3000)
> librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8d495eb000)
> libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8d493e7000)
> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8d49028000)
> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
> (0x00007f8d48e0b000)
> /lib64/ld-linux-x86-64.so.2 (0x00007f8d49f8d000)
>
> On my OpenWRT (trunk) box, I get:
>
> root at OpenWrt:~# ldd /tmp/contact
> linux-vdso.so.1 (0x00007ffd2afcc000)
> libgmp.so.10 => /usr/lib/libgmp.so.10 (0x00007f27a057a000)
> libffi.so.6 => /usr/lib/libffi.so.6 (0x00007f27a0373000)
> libm.so.6 => /lib/libm.so.6 (0x00007f27a0080000)
> librt.so.1 => /lib/librt.so.1 (0x00007f279fe79000)
> libdl.so.2 => /lib/libdl.so.2 (0x00007f279fc76000)
> libc.so.6 => /lib/libc.so.6 (0x00007f279f906000)
> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007f279f6f4000)
> libpthread.so.0 => /lib/libpthread.so.0 (0x00007f279f4d9000)
> /lib64/ld-linux-x86-64.so.2 (0x00007f27a07dc000)
>
> This is almost the same, except it has "libgcc_s.so.1", while on the
> Ubuntu box it does not.
>
> I'd welcome any ideas on how to solve (or at least diagnose) this
> problem. I'd also be interested in any thoughts on the broader question
> of running Haskell programs on OpenWRT.
>
> Thanks,
>
> --Patrick
>
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