I am using ubuntu, trying to cross compile a d application for Raspberry pi.

I installed the "gdc-8-arm-linux-gnueabihf" package, but now when I try to compile, I get a linker error:

trying to cross-compile this:
---
import std.stdio;

void main()
{
  writeln("Hello, Pi!");
}
---

But when I compile (using the command `arm-linux-gnueabihf-gdc-8 main.d`) I get this error:

---
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateInit_'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateInit2_'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflate'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `compress2'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateEnd'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `crc32'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflate'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateInit2_'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateInit_'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateEnd'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateBackInit_'
/usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `adler32'
collect2: error: ld returned 1 exit status
---

Can anyone help me fix this?
Thanks

On Monday, 13 May 2019 at 20:29:06 UTC, Jackson Slater wrote:
> I am using ubuntu, trying to cross compile a d application for Raspberry pi.
>
> [...]

It looks like you're missing a dependency, probably zlib? You should be able to install the zlib-dev package to resolve this.

-Doc

On Monday, 13 May 2019 at 22:44:19 UTC, Doc Andrew wrote:
> On Monday, 13 May 2019 at 20:29:06 UTC, Jackson Slater wrote:
>> I am using ubuntu, trying to cross compile a d application for Raspberry pi.
>>
>> [...]
>
> It looks like you're missing a dependency, probably zlib? You should be able to install the zlib-dev package to resolve this.
>
> -Doc

Hm, there is no zlib-dev package, but there is zlib1g-dev, which was already installed. Any other ideas?

Thanks so much

On Monday, 13 May 2019 at 23:38:07 UTC, Jackson Slater wrote:
> but there is zlib1g-dev, which was already installed

For armhf, your desired target architecture?

On Monday, 13 May 2019 at 23:42:37 UTC, kinke wrote:
> On Monday, 13 May 2019 at 23:38:07 UTC, Jackson Slater wrote:
>> but there is zlib1g-dev, which was already installed
>
> For armhf, your desired target architecture?

I don't think there is a prebuilt one for armhf. I am going to try cross compiling zlib.

On Monday, 13 May 2019 at 23:47:38 UTC, Jackson Slater wrote:
> I don't think there is a prebuilt one for armhf.

Something like this should work:

sudo dpkg --add-architecture armhf
sudo apt-get update
sudo apt-get install zlib1g-dev:armhf

On Monday, 13 May 2019 at 23:51:30 UTC, kinke wrote:
> On Monday, 13 May 2019 at 23:47:38 UTC, Jackson Slater wrote:
>> I don't think there is a prebuilt one for armhf.
>
> Something like this should work:
>
> sudo dpkg --add-architecture armhf
> sudo apt-get update
> sudo apt-get install zlib1g-dev:armhf

Hm, I am getting a bunch of 404 errors now when running 'apt update'.

On Monday, 13 May 2019 at 20:29:06 UTC, Jackson Slater wrote:
> I am using ubuntu, trying to cross compile a d application for Raspberry pi.
>
> I installed the "gdc-8-arm-linux-gnueabihf" package, but now when I try to compile, I get a linker error:
>
> trying to cross-compile this:
> ---
> import std.stdio;
>
> void main()
> {
>   writeln("Hello, Pi!");
> }
> ---
>
> But when I compile (using the command `arm-linux-gnueabihf-gdc-8 main.d`) I get this error:
>
> ---
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateInit_'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateInit2_'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflate'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `compress2'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `deflateEnd'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `crc32'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflate'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateInit2_'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateInit_'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateEnd'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `inflateBackInit_'
> /usr/lib/gcc-cross/arm-linux-gnueabihf/8/libgphobos.so: undefined reference to `adler32'
> collect2: error: ld returned 1 exit status
> ---
>
> Can anyone help me fix this?
> Thanks

Aha! It worked after following this https://github.com/pander86/raspberry_vibed