cannot find -lasound

[Cheb-design]

Hi,
I use faiface/beep library with Oto under the hood. And everything is fine except cross compilation to arm machine.
Now I am trying to compile code on linux/amd64 virtual machine to linux/arm. I did so:

$ CC=arm-linux-gnueabi-gcc GOOS=linux GOARCH=arm CGO_ENABLED=1 go build hello.go

And output was:

# github.com/hajimehoshi/oto
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: cannot find -lasound
collect2: error: ld returned 1 exit status

I tried this both on virtual and stand alone xubuntu machines with the same error.
arm-linux-gnueabihf-gcc - the same error
libasound2-dev is installed and locally all works fine
GOARM setting has no any effect

Could you help please with this issue?

Best regards and thanks for great lib!

[hajimehoshi]

Unfortunately it is hard or impossible to cross-compile Oto for other architectures due to Cgo. I have no idea about a good solution.

[gen2brain]

@Cheb-design You need libasound/alsa-lib compiled for arm, you cannot link arm binary with x86_64 lib. Just compile alsa-lib with your arm gcc, and install in toolchain sysroot/lib directory.

[Cheb-design]

@Cheb-design You need libasound/alsa-lib compiled for arm, you cannot link arm binary with x86_64 lib. Just compile alsa-lib with your arm gcc, and install in toolchain sysroot/lib directory.

Thanks for idea! I'll try it

[kpeu3i]

@Cheb-design Did you have any success with the issue? I got absolutely the same error.

[kpeu3i]

Cross-compiling inside the docker container might help:

1. Create Dockerifle:

FROM karalabe/xgo-1.13

ENV ALSA_LIB_VERSION=1.2.4

RUN apt-get update && apt-get install -y \
    curl

RUN mkdir /alsa && \
    curl "ftp://ftp.alsa-project.org/pub/lib/alsa-lib-${ALSA_LIB_VERSION}.tar.bz2" -o /alsa/alsa-lib-${ALSA_LIB_VERSION}.tar.bz2

# https://www.programering.com/a/MTN0UDMwATk.html
# https://stackoverflow.com/questions/36195926/alsa-util-1-1-0-arm-cross-compile-issue
RUN cd /alsa && \
    tar -xvf alsa-lib-${ALSA_LIB_VERSION}.tar.bz2 && \
    cd alsa-lib-${ALSA_LIB_VERSION} && \
    CC=arm-linux-gnueabihf-gcc-5 ./configure --host=arm-linux && \
    make && \
    make install

2. Build image

docker build -t cross-compile-utils .

3. Compile your app:

docker run -it --rm --entrypoint="" -v $(pwd):/app -v ~/go/pkg/mod:/go/pkg/mod -w /app cross-compile-utils bash -c '\
                CC=arm-linux-gnueabihf-gcc-5 \
                GOOS=linux \
                GOARCH=arm \
                GOARM=7 \
                CGO_ENABLED=1 \
                go build -i'

[hajimehoshi]

Let me close this. Feel free to reopen if you still have a question.