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## Introduction
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In general build on Windows using Microsoft Visual Studio is quite complex due to several factors:
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1. Lack of easily accessible already build libraries in both debug and release variants for your MSVC version
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2. Need of strict debug/release separation
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So in order to make your life while building CppCMS simpler I suggest following rules:
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1. Keep strict separation of debug and release installations and 32/64 bit architectures, for example
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c:\cppcms_deps\x64\Debug
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c:\cppcms_deps\x64\Release
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c:\cppcms_deps\x86\Debug
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c:\cppcms_deps\x86\Release
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Note: pcre, icu and zlib support debug/release mangling of the libraries/dlls for debug/release flavor, but OpenSSL does not. So I strongly recommend to use separate trees to ensure safety.
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2. When building with CMake always use "NMake Makefiles" generator to prevent collisions of debug/release methods
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3. Start from basic dependencies zlib and pcre that can be built using CMake than go with more complex ones like OpenSSL and ICU if needed.
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## Before we begin: Basic Build Dependencies:
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1. Install CMake, make sure it is in global path
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2. Install Python 2.x version, make sure it is in global path
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3. Optionally install git if you want to build upstream branches.
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Checks: open cmd and try to run cmake, python and optionally git - see if it works.
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And finally make sure the directories you are building in are not scanned by anti-virus - otherwise you may get some build failures - due to files being locked by AV.
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### Building PCRE
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PCRE comes with CMake build system, however building it correctly may be somewhat tricky.
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Download the latest version of PCRE 8.x. Do not use PCRE2, it isn't supported.
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Important options to note:
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1. Use "NMake Makefiles" generator, default generator is multi flavor one and much harder to use properly.
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2. Make sure you **explicitly** specify Release/Debug flavor `-DCMAKE_BUILD_TYPE=Release`
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3. Build Shared version of PCRE (i.e. dll) `-DBUILD_SHARED_LIBS=ON`
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4. Make sure you put `-DPCRE_SUPPORT_UNICODE_PROPERTIES=ON` option on to enable utf-8 support - otherwise regex tests will fail
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Step by step:
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Open Visual studio command prompt, for example `x64 Native Tools Command Prompt for VS 2017` or `x86 Native Tools Command Prompt for VS 2017` and change directory to location of PCRE sources. Create build directory and run the commands:
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For example for x64 build:
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Release:
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mkdir msvc-release-x64
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cd msvc-release-x64
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cmake -DBUILD_SHARED_LIBS=ON -DPCRE_SUPPORT_UNICODE_PROPERTIES=ON -G"NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=c:\cppcms_deps\x64\Release ..
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nmake
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nmake install
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cd ..
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Debug:
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mkdir msvc-debug-x64
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cd msvc-debug-x64
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cmake -DBUILD_SHARED_LIBS=ON -DPCRE_SUPPORT_UNICODE_PROPERTIES=ON -G"NMake Makefiles" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=c:\cppcms_deps\x64\Debug ..
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nmake
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nmake install
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cd ..
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### Building zlib
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Fortunately latest zlib versions come with CMake support making it much easier to build with Visual Studio.
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1. Use "NMake Makefiles" generator, default generator is multi version and much trickier to use.
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2. Make sure you **explicitly** specify Release/Debug flavor `-DCMAKE_BUILD_TYPE=Release`
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2. Build Shared version of zlib (i.e. dll) `-DBUILD_SHARED_LIBS=ON`
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Step by step:
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Open Visual studio command prompt, for example `x64 Native Tools Command Prompt for VS 2017` or `x86 Native Tools Command Prompt for VS 2017` and change directory to location of zlib sources. Create build directory and run the commands:
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For example for x64 build
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Release
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mkdir msvc-release-x64
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cd msvc-release-x64
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cmake -DBUILD_SHARED_LIBS=ON -G"NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=c:\cppcms_deps\x64\Release ..
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nmake
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nmake install
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cd ..
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Debug
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mkdir msvc-debug-x64
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cd msvc-debug-x64
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cmake -DBUILD_SHARED_LIBS=ON -G"NMake Makefiles" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=c:\cppcms_deps\x64\Debug ..
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nmake
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nmake install
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cd ..
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### Checking the build results.
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After installation of PCRE and zlib you need to get structure like this:
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c:\cppcms_deps\x64\Release
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c:\cppcms_deps\x64\Release\include
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c:\cppcms_deps\x64\Release\include\zlib.h
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c:\cppcms_deps\x64\Release\include\pcre.h
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...
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c:\cppcms_deps\x64\Release\lib
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c:\cppcms_deps\x64\Release\lib\zlib.lib
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c:\cppcms_deps\x64\Release\lib\pcre.lib
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...
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c:\cppcms_deps\x64\Release\bin
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c:\cppcms_deps\x64\Release\bin\zlib1.dll
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c:\cppcms_deps\x64\Release\bin\pcre.dll
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...
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c:\cppcms_deps\x64\Debug
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c:\cppcms_deps\x64\Debug\include
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c:\cppcms_deps\x64\Debug\include\zlib.h
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c:\cppcms_deps\x64\Debug\include\pcre.h
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...
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c:\cppcms_deps\x64\Debug\lib
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c:\cppcms_deps\x64\Debug\lib\zlibd.lib
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c:\cppcms_deps\x64\Debug\lib\pcred.lib
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...
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c:\cppcms_deps\x64\Debug\bin
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c:\cppcms_deps\x64\Debug\bin\zlibd1.dll
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c:\cppcms_deps\x64\Debug\bin\pcred.dll
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Note - the DLLs and libs with "d" suffix are placed in debug location.
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## Optional Dependencies
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### OpenSSL
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*Warning:* OpenSSL does not mangle its Debug and Release flavors - so make sure you have a separate install prefix for two OpenSSL flavors and never mix them!
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First of all you need to install perl as it is basic building and configuration tool. ActivePerl is recommended. Note: msys2 perl or cygwin perl does not work.
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First of all you need to install perl as it is basic building and configuration tool. ActivePerl is recommended. Make sure it is in system path. Note: msys2 perl or cygwin perl does not work.
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Note: Make sure you
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perl Configure VC-WIN64I --prefix=c:\Users\artik\msvc2017\x64\shared no-asm
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x64
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perl Configure VC-WIN64A no-asm --prefix=c:\Users\artik\msvc2017\x64\Release --openssldir=c:\Users\artik\msvc2017\x64\Release
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perl Configure debug-VC-WIN64A no-asm --prefix=c:\Users\artik\msvc2017\x64\Debug --openssldir=c:\Users\artik\msvc2017\x64\Debug
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x86
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perl Configure VC-WIN64A no-asm --prefix=c:\Users\artik\msvc2017\x64\Release --openssldir=c:\Users\artik\msvc2017\x86\Release
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perl Configure debug-VC-WIN64A no-asm --prefix=c:\Users\artik\msvc2017\x64\Debug --openssldir=c:\Users\artik\msvc2017\x86\Debug
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Precompiled ICU
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BUIDING ICU:
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DOWNLOAD ZIP ONLY!!!
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set PATH=%PATH%;c:\cygwin64\bin
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dos2unix *
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dos2unix -f configure
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bash runConfigureICU Cygwin/MSVC --prefix=/cygdrive/c/Users/artik/msvc2017/x64/Release
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make
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make install
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make distclean
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move dlls from lib to bin
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bash runConfigureICU --enable-debug --disable-release Cygwin/MSVC --prefix=/cygdrive/c/Users/artik/msvc2017/x64/Debug
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make
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make install
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make distclean
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move dlls from lib to bin
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## Building CppCMS
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cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Debug -DDISABLE_STATIC=ON -DCMAKE_INCLUDE_PATH=c:\Users\artik\msvc2017\x64\Debug\include -DCMAKE_LIBRARY_PATH=c:\Users\artik\msvc2017\x64\Debug\lib ..
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SET PATH=%PATH%;c:\Users\artik\msvc2017\x64\Debug\bin;.\booster\
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cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DDISABLE_STATIC=ON -DCMAKE_INCLUDE_PATH=c:\Users\artik\msvc2017\x64\Release\include -DCMAKE_LIBRARY_PATH=c:\Users\artik\msvc2017\x64\Release\lib ..
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SET PATH=%PATH%;c:\Users\artik\msvc2017\x64\Release\bin;.\booster\
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## References
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1. <http://developer.covenanteyes.com/building-openssl-for-visual-studio/>
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2. <https://wiki.qt.io/Compiling-ICU-with-MSVC>
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3. <https://www.npcglib.org/~stathis/blog/precompiled-icu/>
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