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76 lines
2.8 KiB
Markdown
76 lines
2.8 KiB
Markdown
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Cross compilation notes
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=======================
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Static 64 bit windows binary on Ubuntu 15.10 (Wily Werewolf)
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---------------------------------------------------------------------
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Install cross compiler and friends
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```sh
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sudo apt-get install g++-mingw-w64-x86-64
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```
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Default is to use Win32 threading model which lacks std::mutex and such. So we change defaults
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```sh
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sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
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```
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From now on we assume we have everything in `~/dev/`. Get Boost sources unpacked into `~/dev/boost_1_60_0/`
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and change directory to it.
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Now add out cross compiler configuration. Warning: the following will wipe out whatever you had in there.
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```sh
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echo "using gcc : mingw : x86_64-w64-mingw32-g++ ;" > ~/user-config.jam
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```
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Proceed with building Boost normal way, but let's define dedicated staging directory
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```sh
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./bootstrap.sh
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./b2 toolset=gcc-mingw target-os=windows variant=release link=static runtime-link=static address-model=64 \
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--build-type=minimal --with-filesystem --with-program_options --with-regex --with-date_time \
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--stagedir=stage-mingw-64
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cd ..
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```
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Now we get & build OpenSSL
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```sh
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git clone https://github.com/openssl/openssl
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cd openssl
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git checkout OpenSSL_1_0_2g
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./Configure mingw64 no-rc2 no-rc4 no-rc5 no-idea no-bf no-cast no-whirlpool no-md2 no-md4 no-ripemd no-mdc2 \
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no-camellia no-seed no-comp no-krb5 no-gmp no-rfc3779 no-ec2m no-ssl2 no-jpake no-srp no-sctp no-srtp \
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--prefix=~/dev/stage --cross-compile-prefix=x86_64-w64-mingw32-
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make depend
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make
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make install
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cd ..
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```
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and Zlib
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```sh
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git clone https://github.com/madler/zlib
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cd zlib
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git checkout v1.2.8
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CC=x86_64-w64-mingw32-gcc CFLAGS=-O3 ./configure --static --64 --prefix=~/dev/stage
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make
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make install
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cd ..
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```
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Now we prepare cross toolchain hint file for CMake, let's name it `~/dev/toolchain-mingw.cmake`
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```cmake
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SET(CMAKE_SYSTEM_NAME Windows)
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SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
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SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
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SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
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SET(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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```
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Download miniupnpc, unpack, and symlink it into `~/dev/miniupnpc/`.
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Finally, we can build i2pd with all that goodness
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```sh
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git clone https://github.com/PurpleI2P/i2pd
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mkdir i2pd-mingw-64-build
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cd i2pd-mingw-64-build
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BOOST_ROOT=~/dev/boost_1_60_0 cmake -G 'Unix Makefiles' ~/dev/i2pd/build -DBUILD_TYPE=Release \
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-DCMAKE_TOOLCHAIN_FILE=~/dev/toolchain-mingw.cmake -DWITH_AESNI=ON -DWITH_UPNP=ON -DWITH_STATIC=ON \
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-DWITH_HARDENING=ON -DCMAKE_INSTALL_PREFIX:PATH=~/dev/i2pd-mingw-64-static \
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-DZLIB_ROOT=~/dev/stage -DBOOST_LIBRARYDIR:PATH=~/dev/boost_1_60_0/stage-mingw-64/lib \
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-DOPENSSL_ROOT_DIR:PATH=~/dev/stage
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make
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x86_64-w64-mingw32-strip i2pd.exe
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```
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By now, you should have a release build with stripped symbols.
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