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GlowWindowsBuildx86.md

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Build Glow for Windows x86:

Native Build:

Prerequisites:

LLVM:

Download LLVM Installation Binary (includes CLANG) from:

http://releases.llvm.org/download.html

Download source: http://releases.llvm.org/7.0.0/llvm-7.0.0.src.tar.xz

HOWTO with GIT

git clone --single-branch -b release_70 http://llvm.org/git/llvm.git
cd llvm/tools/
git clone --single-branch -b release_70 http://llvm.org/git/clang.git
Optional if want to build clang from source.
cd clang/tools
git clone --single-branch -b release_70 http://llvm.org/git/clang-tools-extra.git extra

Building LLVM

Open Visual Studio native x64 command prompt, and navigate to directory where you want your build folder to be. Commmand example:

mkdir llvmbuilddir64    
cd llvmbuilddir64    
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_GENERATOR_PLATFORM=x64 -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_GO_TESTS=OFF c:\llvm_source\llvm-7.0.0.src

Can be build from VS solution, but can also be done from command line: cmake --build .

Alternative to building llvm libraries

An alternative way is to download pre-build library binaries from (Debug Symbols files not included): http://fb-glow-assets.s3.amazonaws.com/bin/llvmbuilddir64.7z

For this method directory structure needs to be:

c:\projects\llvm\llvm

c:\projects\llvm\llvmbuilddir64

GLOW Support libraries

Prebuild libraries

Built with Visual Studio 2017 clone https://github.com/ayermolo/glowWindowsSupportLibraries.git

Building from Scratch

GLOG

Clone the source from https://github.com/google/glog or download from https://github.com/google/glog/releases (glog-0.4.0 is recommended)

create a build folder inside glog and execute following command from inside the build folder to create the project, build and install

cmake ../ -DCMAKE_GENERATOR_PLATFORM=x64 -DCMAKE_INSTALL_RUNSTATEDIR:PATH="" -DCMAKE_INSTALL_PREFIX:PATH="<Glog_Location>" -DWITH_GFLAGS:BOOL="0"    
cmake --build . --config Release    
cmake --build . --config Debug    
cmake --build . --target install --config Debug    
cmake --build . --target install --config Release
ZLIB/PNG

This repo contains modified cmake files to get it working under windows:

git clone https://github.com/ayermolo/glowWindowsSupportLibraries.git
cd glowWindowsSupportLibraries\tools
mkdir libpngBuild
cmake -G "Visual Studio 15 2017" -DCMAKE_GENERATOR_PLATFORM=x64 -DPNG_BUILD_ZLIB=ON -DZLIB_INCLUDE_DIR="../zlib-1.2.11" -DPNG_STATIC=OFF -DPNG_SHARED=ON -DCMAKE_INSTALL_PREFIX:PATH=../libpngInstall ..\lpng1636
cmake --build . --config Debug
cmake --build . --config Release
cmake --build . --target install --config Debug
cmake --build . --target install --config Release
Protobuf

Do this in VS terminal opened as admin

git clone https://github.com/google/protobuf.git
 mkdir protoBufBuild
 cd protoBufBuild
 cmake ..\cmake -DBUILD_SHARED_LIBS=TRUE -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_GENERATOR_PLATFORM=x64 -DCMAKE_INSTALL_PREFIX:PATH=../protobufInstall
cmake --build . --config Debug
cmake --build . --config Release
cmake --build . --target install --config Debug
cmake --build . --target install --config Release

Open VS solution and build x64 configurations you need.

FOLLY

Need to get and install VCPKG first

git clone https://github.com/Microsoft/vcpkg.git
cd vcpckg
.\bootstrap-vcpkg.bat

Get and build folly and other dependencies. At the time of this writing vcpkg does not list fmt as dependency for latest Folly, so need to fetch it manually.

.\vcpkg.exe install fmt:x64-windows
.\vcpkg.exe install jemalloc:x64-windows
.\vcpkg.exe install folly:x64-windows --head
Misc Issues

If you are experiencing linking error "linker ran out of memory". Try modifying C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\VC\VCTargets\Microsoft.Cpp.props

<PreferredToolArchitecture>x64</PreferredToolArchitecture>

More info if you want to do it per project: https://developercommunity.visualstudio.com/content/problem/160714/memory-error-for-linker-in-vs-155-x64.html

Glow CMake configuration Command

cmake ../glow -DCMAKE_GENERATOR_PLATFORM=x64 -DGLOW_WITH_OPENCL=0 -DCMAKE_PREFIX_PATH="C:\projects\llvm\llvmbuilddir64;C:\projects\glowWindowsSupportLibraries\tools\glogInstall;C:\projects\glowWindowsSupportLibraries\tools\libpngInstall;C:\projects\glowWindowsSupportLibraries\tools\protobufInstall;C:\projects\gitlab\vcpkg\installed\x64-windows"  -Dgtest_force_shared_crt=TRUE  -Dgtest_force_shared_crt=TRUE -DLINK_PROTOBUF_AS_DLL=ON

Running Glow

Copy dll files in to {Relase, Debug}  folder where image-classifier.exe is.
{your_path}\lpng1635\projects\vstudio\x64\{Release, Debug}\libpng16.dll
{your_path}\protobuf\tmp64\{Release, Debub}\*.dll