Re: [HOWTO] compile altcoin for windows on linux using mxe and mingw

How do we fix thee BIGNUM error, I think that could help a lot.

downgrade the libssl version you're using

I tried that, but I don't think I was successful, how does one do that?

Edit: and which version does one downgrade to?

Download the version from openssl.org, go down one version at a time from the one you're using.

Here's a build script you can modify accordingly to your system setup and work from there...

Code:

#!/bin/bash

# Working setup to cross-compile Windows binaries for Qt Coin hosted on a
# Ubuntu 16.04 box using non-Canonical ppas for MXE and Qt5.7:
# deb http://pkg.mxe.cc/repos/apt/debian wheezy main

# Doesn't seem to pass the QT directives through, though.

# Basic path bindings

PATH=/path/to/mxe/usr/bin:$PATH
MXE_PATH=/path/to/mxe
MXE_INCLUDE_PATH=/path/to/mxe/usr/i686-w64-mingw32.static/include
MXE_LIB_PATH=/path/to/mxe/usr/i686-w64-mingw32.static/lib

# Belt and braces

CXXFLAGS="-std=gnu++11 -march=i686"
LDFLAGS="-march=i686"
target="i686-w64-mingw32.static"

# Particulars for cross-compiling

export BOOST_LIB_SUFFIX=-mt
export BOOST_THREAD_LIB_SUFFIX=_win32-mt
export BOOST_INCLUDE_PATH=${MXE_INCLUDE_PATH}/boost
export BOOST_LIB_PATH=${MXE_LIB_PATH}
export OPENSSL_INCLUDE_PATH=${MXE_INCLUDE_PATH}/openssl
export OPENSSL_LIB_PATH=${MXE_LIB_PATH}
export BDB_INCLUDE_PATH=${MXE_INCLUDE_PATH}
export BDB_LIB_PATH=${MXE_LIB_PATH}
export MINIUPNPC_INCLUDE_PATH=${MXE_INCLUDE_PATH}
export MINIUPNPC_LIB_PATH=${MXE_INCLUDE_LIB}
export MINIUPNP_STATICLIB=${MXE_INCLUDE_LIB}
export QRENCODE_INCLUDE_PATH=/path/to/qrencode/install/include
export QRENCODE_LIB_PATH=/path/to/qrencode/install/lib
export SECP256K1_LIB_PATH=/home/ader/coins/AmsterdamCoin/src/secp256k1/libs
export SECP256K1_INCLUDE_PATH=/home/ader/coins/AmsterdamCoin/src/secp256k1/include
export QMAKE_LRELEASE=${MXE_PATH}/usr/${target}/qt5/bin/lrelease

# Call qmake to create Makefile.[Release|Debug]

${target}-qmake-qt5 \
   MXE=1 \
   USE_O3=1 \
   USE_QRCODE=1 \
   USE_UPNPC=1 \
FIRST_CLASS_MESSAGING=1 \
   RELEASE=1 \
   BOOST_LIB_SUFFIX=${BOOST_LIB_SUFFIX} \
   BOOST_THREAD_LIB_SUFFIX=${BOOST_THREAD_LIB_SUFFIX} \
   BOOST_INCLUDE_PATH=${BOOST_INCLUDE_PATH} \
   BOOST_LIB_PATH=${BOOST_LIB_PATH} \
   OPENSSL_INCLUDE_PATH=${OPENSSL_INCLUDE_PATH} \
   OPENSSL_LIB_PATH=${OPENSSL_LIB_PATH} \
   BDB_INCLUDE_PATH=${BDB_INCLUDE_PATH} \
   BDB_LIB_PATH=${BDB_LIB_PATH} \
   MINIUPNPC_INCLUDE_PATH=${MINIUPNPC_INCLUDE_PATH} \
   MINIUPNPC_LIB_PATH=${MINIUPNPC_LIB_PATH} \
   MINIUPNP_STATICLIB=${MINIUPNP_STATICLIB} \
   QRENCODE_INCLUDE_PATH=/path/to/qrencode/install/include \
   QRENCODE_LIB_PATH=/path/to/qrencode/install/lib \
   QMAKE_LRELEASE=${QMAKE_LRELEASE} COIN-name.pro
   SECP256K1_LIB_PATH=/home/ader/coins/DEPS/src/secp256k1/.libs \
   SECP256K1_INCLUDE_PATH=/home/ader/coins/DEPS/src/secp256k1/include \

# Go for it. If successful, Windows binary will be written out to ./release/COin-name-qt.exe
cd src/leveldb
TARGET_OS=NATIVE_WINDOWS make libleveldb.a libmemenv.a CC=~path/to/mxe/usr/bin/i686-w64-mingw32.static-gcc CXX=/path/to/mxe/usr/bin/i686-w64-mingw32.static-g++

make -f Makefile.Release CXXFLAGS="-DQT_GUI -DQT_NO_PRINTER -std=gnu++11 -march=x86_64" LDFLAGS="-march=x86_64"