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-Building with Visual C++, prerequisites
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-=======================================
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-
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- This document describes how to compile, build and install curl and libcurl
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- from sources using the Visual C++ build tool. To build with VC++, you will
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- of course have to first install VC++. The minimum required version of
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- VC is 6 (part of Visual Studio 6). However using a more recent version is
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- strongly recommended.
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-
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- VC++ is also part of the Windows Platform SDK. You do not have to install
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- the full Visual Studio or Visual C++ if all you want is to build curl.
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-
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- The latest Platform SDK can be downloaded freely from:
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-
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- https://developer.microsoft.com/en-us/windows/downloads/sdk-archive
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-
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- If you are building with VC6 then you will also need the February 2003
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- Edition of the Platform SDK which can be downloaded from:
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-
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- https://www.microsoft.com/en-us/download/details.aspx?id=12261
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-
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- If you wish to support zlib, openssl, c-ares, ssh2, you will have to download
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- them separately and copy them to the deps directory as shown below:
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-
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- somedirectory\
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- |_curl-src
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- | |_winbuild
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- |
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- |_deps
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- |_ lib
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- |_ include
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- |_ bin
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-
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- It is also possible to create the deps directory in some other random
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- places and tell the Makefile its location using the WITH_DEVEL option.
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-
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-Building straight from git
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-==========================
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-
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- When you check out code git and build it, as opposed from a released source
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- code archive, you need to first run the "buildconf.bat" batch file (present
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- in the source code root directory) to set things up.
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-
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-Building with Visual C++
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-========================
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-
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-Open a Visual Studio Command prompt:
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-
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- Using the 'Developer Command Prompt for VS <version>' menu entry:
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- where version is the Visual Studio version. The developer prompt at default
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- uses the x86 mode. It is required to call Vcvarsall.bat to setup the prompt
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- for the machine type you want, using Vcvarsall.bat.
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- This type of command prompt may not exist in all Visual Studio versions.
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-
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- For more information, check:
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- https://docs.microsoft.com/en-us/dotnet/framework/tools/developer-command-prompt-for-vs
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- https://docs.microsoft.com/en-us/cpp/build/how-to-enable-a-64-bit-visual-cpp-toolset-on-the-command-line
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-
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- Using the 'VS <version> <platform> <type> Command Prompt' menu entry:
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- where version is the Visual Studio version, platform is e.g. x64
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- and type Native of Cross platform build. This type of command prompt
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- may not exist in all Visual Studio versions.
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-
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- See also:
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- https://msdn.microsoft.com/en-us/library/f2ccy3wt.aspx
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-
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-Once you are in the console, go to the winbuild directory in the Curl
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-sources:
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- cd curl-src\winbuild
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-
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-Then you can call nmake /f Makefile.vc with the desired options (see below).
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-The builds will be in the top src directory, builds\ directory, in
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-a directory named using the options given to the nmake call.
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-
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-nmake /f Makefile.vc mode=<static or dll> <options>
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-
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-where <options> is one or many of:
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- VC=<6,7,8,9,10,11,12,14,15> - VC versions
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- WITH_DEVEL=<path> - Paths for the development files (SSL, zlib, etc.)
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- Defaults to sibbling directory deps: ../deps
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- Libraries can be fetched at https://windows.php.net/downloads/php-sdk/deps/
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- Uncompress them into the deps folder.
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- WITH_SSL=<dll or static> - Enable OpenSSL support, DLL or static
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- WITH_NGHTTP2=<dll or static> - Enable HTTP/2 support, DLL or static
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- WITH_MBEDTLS=<dll or static> - Enable mbedTLS support, DLL or static
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- WITH_CARES=<dll or static> - Enable c-ares support, DLL or static
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- WITH_ZLIB=<dll or static> - Enable zlib support, DLL or static
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- WITH_SSH2=<dll or static> - Enable libSSH2 support, DLL or static
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- WITH_PREFIX=<dir> - Where to install the build
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- ENABLE_SSPI=<yes or no> - Enable SSPI support, defaults to yes
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- ENABLE_IPV6=<yes or no> - Enable IPv6, defaults to yes
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- ENABLE_IDN=<yes or no> - Enable use of Windows IDN APIs, defaults to yes
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- Requires Windows Vista or later
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- ENABLE_SCHANNEL=<yes or no> - Enable native Windows SSL support, defaults to yes
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- GEN_PDB=<yes or no> - Generate Program Database (debug symbols for release build)
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- DEBUG=<yes or no> - Debug builds
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- MACHINE=<x86 or x64> - Target architecture (default is x86)
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- CARES_PATH=<path to cares> - Custom path for c-ares
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- MBEDTLS_PATH=<path to mbedTLS> - Custom path for mbedTLS
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- NGHTTP2_PATH=<path to HTTP/2> - Custom path for nghttp2
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- SSH2_PATH=<path to libSSH2> - Custom path for libSSH2
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- SSL_PATH=<path to OpenSSL> - Custom path for OpenSSL
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- ZLIB_PATH=<path to zlib> - Custom path for zlib
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-
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-
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-Static linking of Microsoft's C RunTime (CRT):
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-==============================================
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-If you are using mode=static nmake will create and link to the static build of
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-libcurl but *not* the static CRT. If you must you can force nmake to link in
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-the static CRT by passing RTLIBCFG=static. Typically you shouldn't use that
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-option, and nmake will default to the DLL CRT. RTLIBCFG is rarely used and
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-therefore rarely tested. When passing RTLIBCFG for a configuration that was
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-already built but not with that option, or if the option was specified
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-differently, you must destroy the build directory containing the configuration
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-so that nmake can build it from scratch.
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-
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-Building your own application with a static libcurl
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-===================================================
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-When building an application that uses the static libcurl library on Windows,
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-you must define CURL_STATICLIB. Otherwise the linker will look for dynamic
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-import symbols.
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-
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-Legacy Windows and SSL
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-======================
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-When you build curl using the build files in this directory the default SSL
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-backend will be Schannel (Windows SSPI), the native SSL library that comes
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-with the Windows OS. Schannel in Windows <= XP is not able to connect to
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-servers that no longer support the legacy handshakes and algorithms used by
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-those versions. If you will be using curl in one of those earlier versions of
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-Windows you should choose another SSL backend like OpenSSL.
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Daniel Stenberg