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Thread: How to compile a windows compatible exe under Ubuntu

  1. #1
    Join Date
    May 2019
    Beans
    3

    Lightbulb How to compile a windows compatible exe under Ubuntu

    I am a complete idiot and would really appreciate some help.

    I've been struggling for 2 days straight how to figure out a way to compile rtmpdump from within Ubuntu 16.04.6 (64-bit).
    What I've done on a fresh install of Ubuntu is the following:

    apt install git build-essential libssl-dev
    git clone https://github.com/sstativa/rtmpdump-ksv.gitcd rtmpdump-ksv
    //(I usually dont run this line because it seems like the files are already patched? Otherwise the line is) patch -p0 -i Patch.diff
    make
    make install prefix=/usr

    So far, so good. This compiles just fine.
    Now the problem is that the resulting executable isn't compatible with windows. So how would I go on about compiling this in a way that works in Windows?

    I did try doing "make SYS=mingw" and I also tried changing the gcc entries in makefile to the i686 win32 version of mingw, but it would complain about missing files and/or undefined references.
    So i added what I thought were the missing libraries:
    ftp://ftp.zlatkovic.com/libxml/zlib-1.2.5.win32.zip
    https://www.openssl.org/source/old/1...-1.0.1e.tar.gz (I was unable to compile this one)

    Maybe someone could help me find a way to compile this so that the resulting exe works under windows 7 x64?

  2. #2
    Join Date
    Jan 2019
    Location
    Moscow, Russia
    Beans
    50
    Distro
    Xubuntu 18.04 Bionic Beaver

    Re: How to compile a windows compatible exe under Ubuntu

    To compile for Windows, you need to install MinGW toolchain and set up environment accordingly.
    You also need to compile OpenSSL with MinGW. As for zlib, Ubuntu already provides the MinGW version of it in the libz-mingw-w64-dev package.

    Works this way in Ubuntu 18.04, should work in 16.04 too:
    Code:
    # Install necessary packages
    apt-get install git build-essential mingw-w64 libz-mingw-w64-dev
    
    # Prepare environment
    export CROSS_COMPILE=x86_64-w64-mingw32-
    
    # Get and build OpenSSL; use version 1.0.x, build fails with 1.1.x
    openssl_ver=1.0.2s
    wget https://www.openssl.org/source/openssl-$openssl_ver.tar.gz
    tar xf openssl-$openssl_ver.tar.gz
    cd openssl-$openssl_ver
    openssl_dir=$PWD
    ./Configure mingw64
    make
    
    # Get and build rtmpdump
    cd ..
    git clone https://github.com/sstativa/rtmpdump-ksv.git
    cd rtmpdump-ksv
    make SYS=mingw XCFLAGS=-I$openssl_dir/include XLDFLAGS=-L$openssl_dir
    
    # Put it all together
    cd ..
    mkdir result
    cp -t result rtmpdump-ksv/*.exe rtmpdump-ksv/librtmp/librtmp-1.dll /usr/x86_64-w64-mingw32/lib/zlib1.dll
    Then copy everything from the result directory to Windows.

  3. #3
    Join Date
    May 2019
    Beans
    3

    Re: How to compile a windows compatible exe under Ubuntu

    Thanks a lot for your reply! Do you recommend trying this out on 32 or 64-bit Ubuntu?
    Or maybe I should just get ubuntu 18.04, if that's what you were using to compile it?

    Sorry, I've actually never used Linux before so I'm completely new to all this stuff, and maybe compiling isn't very beginner's friendly. but I'll definitely give this a try!
    Thanks again!
    Last edited by flawlessvictory2; June 2nd, 2019 at 10:06 AM.

  4. #4
    Join Date
    May 2019
    Beans
    3

    Wink Re: How to compile a windows compatible exe under Ubuntu

    Quote Originally Posted by dmnur View Post
    To compile for Windows, you need to install MinGW toolchain and set up environment accordingly.
    You also need to compile OpenSSL with MinGW. As for zlib, Ubuntu already provides the MinGW version of it in the libz-mingw-w64-dev package.

    Works this way in Ubuntu 18.04, should work in 16.04 too:
    Code:
    # Install necessary packages
    apt-get install git build-essential mingw-w64 libz-mingw-w64-dev
    
    # Prepare environment
    export CROSS_COMPILE=x86_64-w64-mingw32-
    
    # Get and build OpenSSL; use version 1.0.x, build fails with 1.1.x
    openssl_ver=1.0.2s
    wget https://www.openssl.org/source/openssl-$openssl_ver.tar.gz
    tar xf openssl-$openssl_ver.tar.gz
    cd openssl-$openssl_ver
    openssl_dir=$PWD
    ./Configure mingw64
    make
    
    # Get and build rtmpdump
    cd ..
    git clone https://github.com/sstativa/rtmpdump-ksv.git
    cd rtmpdump-ksv
    make SYS=mingw XCFLAGS=-I$openssl_dir/include XLDFLAGS=-L$openssl_dir
    
    # Put it all together
    cd ..
    mkdir result
    cp -t result rtmpdump-ksv/*.exe rtmpdump-ksv/librtmp/librtmp-1.dll /usr/x86_64-w64-mingw32/lib/zlib1.dll
    Then copy everything from the result directory to Windows.
    Wow, this all actually worked _on the first try_.

    You sir, are a Genius and a life saver! THANK YOU VERY MUCH!!

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