823 строки
29 KiB
Plaintext
823 строки
29 KiB
Plaintext
_ _ ____ _
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/ __| | | | |_) | |
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\___|\___/|_| \_\_____|
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How To Compile
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Installing Binary Packages
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==========================
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Lots of people download binary distributions of curl and libcurl. This
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document does not describe how to install curl or libcurl using such a
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binary package. This document describes how to compile, build and install
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curl and libcurl from source code.
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UNIX
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====
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A normal unix installation is made in three or four steps (after you've
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unpacked the source archive):
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./configure
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make
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make test (optional)
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make install
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You probably need to be root when doing the last command.
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If you have checked out the sources from the CVS repository, read the
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CVS-INFO on how to proceed.
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Get a full listing of all available configure options by invoking it like:
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./configure --help
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If you want to install curl in a different file hierarchy than /usr/local,
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you need to specify that already when running configure:
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./configure --prefix=/path/to/curl/tree
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If you happen to have write permission in that directory, you can do 'make
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install' without being root. An example of this would be to make a local
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install in your own home directory:
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./configure --prefix=$HOME
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make
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make install
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The configure script always tries to find a working SSL library unless
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explicitly told not to. If you have OpenSSL installed in the default search
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path for your compiler/linker, you don't need to do anything special. If
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you have OpenSSL installed in /usr/local/ssl, you can run configure like:
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./configure --with-ssl
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If you have OpenSSL installed somewhere else (for example, /opt/OpenSSL,)
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you can run configure like this:
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./configure --with-ssl=/opt/OpenSSL
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If you insist on forcing a build without SSL support, even though you may
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have OpenSSL installed in your system, you can run configure like this:
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./configure --without-ssl
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If you have OpenSSL installed, but with the libraries in one place and the
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header files somewhere else, you have to set the LDFLAGS and CPPFLAGS
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environment variables prior to running configure. Something like this
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should work:
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(with the Bourne shell and its clones):
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CPPFLAGS="-I/path/to/ssl/include" LDFLAGS="-L/path/to/ssl/lib" \
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./configure
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(with csh, tcsh and their clones):
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env CPPFLAGS="-I/path/to/ssl/include" LDFLAGS="-L/path/to/ssl/lib" \
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./configure
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If you have shared SSL libs installed in a directory where your run-time
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linker doesn't find them (which usually causes configure failures), you can
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provide the -R option to ld on some operating systems to set a hard-coded
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path to the run-time linker:
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LDFLAGS=-R/usr/local/ssl/lib ./configure --with-ssl
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MORE OPTIONS
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To force configure to use the standard cc compiler if both cc and gcc are
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present, run configure like
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CC=cc ./configure
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or
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env CC=cc ./configure
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To force a static library compile, disable the shared library creation
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by running configure like:
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./configure --disable-shared
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To tell the configure script to skip searching for thread-safe functions,
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add an option like:
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./configure --disable-thread
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To build curl with kerberos4 support enabled, curl requires the krb4 libs
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and headers installed. You can then use a set of options to tell
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configure where those are:
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--with-krb4-includes[=DIR] Specify location of kerberos4 headers
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--with-krb4-libs[=DIR] Specify location of kerberos4 libs
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--with-krb4[=DIR] where to look for Kerberos4
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In most cases, /usr/athena is the install prefix and then it works with
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./configure --with-krb4=/usr/athena
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If you're a curl developer and use gcc, you might want to enable more
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debug options with the --enable-debug option.
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curl can be built to use a whole range of libraries to provide various
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useful services, and configure will try to auto-detect a decent
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default. But if you want to alter it, you can select how to deal with
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each individual library.
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To build with GnuTLS support instead of OpenSSL for SSL/TLS, note that
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you need to use both --without-ssl and --with-gnutls.
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To build with yassl support instead of OpenSSL or GunTLS, you must build
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yassl with its OpenSSL emulation enabled and point to that directory root
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with configure --with-ssl.
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To build with NSS support instead of OpenSSL for SSL/TLS, note that
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you need to use both --without-ssl and --with-nss.
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To get GSSAPI support, build with --with-gssapi and have the MIT or
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Heimdal Kerberos 5 packages installed.
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To get support for SCP and SFTP, build with --with-libssh2 and have
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libssh2 0.16 or later installed.
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Win32
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=====
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Building Windows DLLs and C run-time (CRT) linkage issues
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---------------------------------------------------------
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As a general rule, building a DLL with static CRT linkage is highly
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discouraged, and intermixing CRTs in the same app is something to
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avoid at any cost.
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Reading and comprehension of Microsoft Knowledge Base articles
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KB94248 and KB140584 is a must for any Windows developer. Especially
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important is full understanding if you are not going to follow the
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advice given above.
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KB94248 - How To Use the C Run-Time
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http://support.microsoft.com/kb/94248/en-us
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KB140584 - How to link with the correct C Run-Time (CRT) library
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http://support.microsoft.com/kb/140584/en-us
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If your app is misbehaving in some strange way, or it is suffering
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from memory corruption, before asking for further help, please try
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first to rebuild every single library your app uses as well as your
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app using the debug multithreaded dynamic C runtime.
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MingW32
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-------
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Make sure that MinGW32's bin dir is in the search path, for example:
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set PATH=c:\mingw32\bin;%PATH%
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then run 'mingw32-make mingw32' in the root dir. There are other
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make targets available to build libcurl with more features, use:
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'mingw32-make mingw32-zlib' to build with Zlib support;
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'mingw32-make mingw32-ssl-zlib' to build with SSL and Zlib enabled;
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'mingw32-make mingw32-ssh2-ssl-zlib' to build with SSH2, SSL, Zlib;
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'mingw32-make mingw32-ssh2-ssl-sspi-zlib' to build with SSH2, SSL, Zlib
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and SSPI support.
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If you have any problems linking libraries or finding header files, be sure
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to verify that the provided "Makefile.m32" files use the proper paths, and
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adjust as necessary. It is also possible to override these paths with
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environment variables, for example:
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set ZLIB_PATH=c:\zlib-1.2.3
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set OPENSSL_PATH=c:\openssl-0.9.8e
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set LIBSSH2_PATH=c:\libssh2-0.17
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ATTENTION: if you want to build with libssh2 support you have to use latest
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version 0.17 - previous versions will NOT work with 7.17.0 and later!
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Use 'mingw32-make mingw32-ssh2-ssl-zlib' to build with SSH2 and SSL enabled.
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It is now also possible to build with other LDAP SDKs than MS LDAP;
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currently it is possible to build with native Win32 OpenLDAP, or with the
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Novell CLDAP SDK. If you want to use these you need to set these vars:
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set LDAP_SDK=c:\openldap
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set USE_LDAP_OPENLDAP=1
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or for using the Novell SDK:
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set USE_LDAP_NOVELL=1
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If you want to enable LDAPS support then set LDAPS=1.
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- optional MingW32-built OpenlDAP SDK available from:
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http://www.gknw.net/mirror/openldap/
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- optional recent Novell CLDAP SDK available from:
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http://developer.novell.com/ndk/cldap.htm
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Cygwin
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------
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Almost identical to the unix installation. Run the configure script in the
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curl root with 'sh configure'. Make sure you have the sh executable in
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/bin/ or you'll see the configure fail toward the end.
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Run 'make'
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Dev-Cpp
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-------
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See the separate INSTALL.devcpp file for details.
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MSVC from command line
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----------------------
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Run the 'vcvars32.bat' file to get a proper environment. The
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vcvars32.bat file is part of the Microsoft development environment and
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you may find it in 'C:\Program Files\Microsoft Visual Studio\vc98\bin'
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provided that you installed Visual C/C++ 6 in the default directory.
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Then run 'nmake vc' in curl's root directory.
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If you want to compile with zlib support, you will need to build
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zlib (http://www.gzip.org/zlib/) as well. Please read the zlib
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documentation on how to compile zlib. Define the ZLIB_PATH environment
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variable to the location of zlib.h and zlib.lib, for example:
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set ZLIB_PATH=c:\zlib-1.2.3
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Then run 'nmake vc-zlib' in curl's root directory.
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If you want to compile with SSL support you need the OpenSSL package.
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Please read the OpenSSL documentation on how to compile and install
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the OpenSSL libraries. The build process of OpenSSL generates the
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libeay32.dll and ssleay32.dll files in the out32dll subdirectory in
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the OpenSSL home directory. OpenSSL static libraries (libeay32.lib,
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ssleay32.lib, RSAglue.lib) are created in the out32 subdirectory.
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Before running nmake define the OPENSSL_PATH environment variable with
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the root/base directory of OpenSSL, for example:
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set OPENSSL_PATH=c:\openssl-0.9.8e
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Then run 'nmake vc-ssl' or 'nmake vc-ssl-dll' in curl's root
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directory. 'nmake vc-ssl' will create a libcurl static and dynamic
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libraries in the lib subdirectory, as well as a statically linked
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version of curl.exe in the src subdirectory. This statically linked
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version is a standalone executable not requiring any DLL at
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runtime. This make method requires that you have the static OpenSSL
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libraries available in OpenSSL's out32 subdirectory.
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'nmake vc-ssl-dll' creates the libcurl dynamic library and
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links curl.exe against libcurl and OpenSSL dynamically.
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This executable requires libcurl.dll and the OpenSSL DLLs
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at runtime.
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Run 'nmake vc-ssl-zlib' to build with both ssl and zlib support.
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Borland C++ compiler
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---------------------
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compile openssl
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Make sure you include the paths to curl/include and openssl/inc32 in
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your bcc32.cnf file
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eg : -I"c:\Bcc55\include;c:\path_curl\include;c:\path_openssl\inc32"
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Check to make sure that all of the sources listed in lib/Makefile.b32
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are present in the /path_to_curl/lib directory. (Check the src
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directory for missing ones.)
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Make sure the environment variable "BCCDIR" is set to the install
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location for the compiler eg : c:\Borland\BCC55
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command line:
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make -f /path_to_curl/lib/Makefile-ssl.b32
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compile simplessl.c with appropriate links
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c:\curl\docs\examples\> bcc32 -L c:\path_to_curl\lib\libcurl.lib
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-L c:\borland\bcc55\lib\psdk\ws2_32.lib
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-L c:\openssl\out32\libeay32.lib
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-L c:\openssl\out32\ssleay32.lib
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simplessl.c
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MSVC IDE
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--------
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If you use VC++, Borland or similar compilers. Include all lib source
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files in a static lib "project" (all .c and .h files that is).
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(you should name it libcurl or similar)
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Make the sources in the src/ drawer be a "win32 console application"
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project. Name it curl.
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For VC++ 6, there's an included Makefile.vc6 that should be possible
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to use out-of-the-box.
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Disabling Specific Protocols in Win32 builds
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--------------------------------------------
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The configure utility, unfortunately, is not available for the Windows
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environment, therefore, you cannot use the various disable-protocol
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options of the configure utility on this platform.
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However, you can use the following defines to disable specific
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protocols:
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HTTP_ONLY disables all protocols except HTTP
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CURL_DISABLE_FTP disables FTP
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CURL_DISABLE_LDAP disables LDAP
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CURL_DISABLE_TELNET disables TELNET
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CURL_DISABLE_DICT disables DICT
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CURL_DISABLE_FILE disables FILE
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CURL_DISABLE_TFTP disables TFTP
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If you want to set any of these defines you have the following
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possibilities:
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- Modify lib/setup.h
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- Modify lib/Makefile.vc6
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- Add defines to Project/Settings/C/C++/General/Preprocessor Definitions
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in the curllib.dsw/curllib.dsp Visual C++ 6 IDE project.
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Important static libcurl usage note
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-----------------------------------
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When building an application that uses the static libcurl library, you must
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add '-DCURL_STATICLIB' to your CFLAGS. Otherwise the linker will look for
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dynamic import symbols.
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IBM OS/2
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========
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Building under OS/2 is not much different from building under unix.
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You need:
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- emx 0.9d
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- GNU make
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- GNU patch
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- ksh
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- GNU bison
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- GNU file utilities
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- GNU sed
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- autoconf 2.13
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If you want to build with OpenSSL or OpenLDAP support, you'll need to
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download those libraries, too. Dirk Ohme has done some work to port SSL
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libraries under OS/2, but it looks like he doesn't care about emx. You'll
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find his patches on: http://come.to/Dirk_Ohme
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If during the linking you get an error about _errno being an undefined
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symbol referenced from the text segment, you need to add -D__ST_MT_ERRNO__
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in your definitions.
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If everything seems to work fine but there's no curl.exe, you need to add
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-Zexe to your linker flags.
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If you're getting huge binaries, probably your makefiles have the -g in
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CFLAGS.
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VMS
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===
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(The VMS section is in whole contributed by the friendly Nico Baggus)
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Curl seems to work with FTP & HTTP other protocols are not tested. (the
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perl http/ftp testing server supplied as testing too cannot work on VMS
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because vms has no concept of fork(). [ I tried to give it a whack, but
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thats of no use.
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SSL stuff has not been ported.
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Telnet has about the same issues as for Win32. When the changes for Win32
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are clear maybe they'll work for VMS too. The basic problem is that select
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ONLY works for sockets.
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Marked instances of fopen/[f]stat that might become a problem, especially
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for non stream files. In this regard, the files opened for writing will be
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created stream/lf and will thus be safe. Just keep in mind that non-binary
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read/wring from/to files will have a records size limit of 32767 bytes
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imposed.
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Stat to get the size of the files is again only safe for stream files &
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fixed record files without implied CC.
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-- My guess is that only allowing access to stream files is the quickest
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way to get around the most issues. Therefore all files need to to be
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checked to be sure they will be stream/lf before processing them. This is
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the easiest way out, I know. The reason for this is that code that needs to
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report the filesize will become a pain in the ass otherwise.
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Exit status.... Well we needed something done here,
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VMS has a structured exist status:
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| 3 | 2 | 1 | 0|
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|1098|765432109876|5432109876543|210|
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+----+------------+-------------+---+
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|Ctrl| Facility | Error code |sev|
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+----+------------+-------------+---+
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With the Ctrl-bits an application can tell if part or the whole message has
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already been printed from the program, DCL doesn't need to print it again.
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Facility - basically the program ID. A code assigned to the program
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the name can be fetched from external or internal message libraries
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Error code - the err codes assigned by the application
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Sev. - severity: Even = error, off = non error
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0 = Warning
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1 = Success
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2 = Error
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3 = Information
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4 = Fatal
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<5-7> reserved.
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This all presents itself with:
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%<FACILITY>-<Sev>-<Errorname>, <Error message>
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See also the src/curlmsg.msg file, it has the source for the messages In
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src/main.c a section is devoted to message status values, the globalvalues
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create symbols with certain values, referenced from a compiled message
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file. Have all exit function use a exit status derived from a translation
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table with the compiled message codes.
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This was all compiled with:
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Compaq C V6.2-003 on OpenVMS Alpha V7.1-1H2
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So far for porting notes as of:
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13-jul-2001
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N. Baggus
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QNX
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===
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(This section was graciously brought to us by David Bentham)
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As QNX is targeted for resource constrained environments, the QNX headers
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set conservative limits. This includes the FD_SETSIZE macro, set by default
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to 32. Socket descriptors returned within the CURL library may exceed this,
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resulting in memory faults/SIGSEGV crashes when passed into select(..)
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calls using fd_set macros.
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A good all-round solution to this is to override the default when building
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libcurl, by overriding CFLAGS during configure, example
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# configure CFLAGS='-DFD_SETSIZE=64 -g -O2'
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RISC OS
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=======
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The library can be cross-compiled using gccsdk as follows:
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CC=riscos-gcc AR=riscos-ar RANLIB='riscos-ar -s' ./configure \
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--host=arm-riscos-aof --without-random --disable-shared
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make
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where riscos-gcc and riscos-ar are links to the gccsdk tools.
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You can then link your program with curl/lib/.libs/libcurl.a
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AmigaOS
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=======
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(This section was graciously brought to us by Diego Casorran)
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To build cURL/libcurl on AmigaOS just type 'make amiga' ...
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What you need is: (not tested with others versions)
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GeekGadgets / gcc 2.95.3 (http://www.geekgadgets.org/)
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AmiTCP SDK v4.3 (http://www.aminet.net/comm/tcp/AmiTCP-SDK-4.3.lha)
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Native Developer Kit (http://www.amiga.com/3.9/download/NDK3.9.lha)
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As no ixemul.library is required you will be able to build it for
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WarpOS/PowerPC (not tested by me), as well a MorphOS version should be
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possible with no problems.
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To enable SSL support, you need a OpenSSL native version (without ixemul),
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you can find a precompiled package at http://amiga.sourceforge.net/OpenSSL/
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NetWare
|
|
=======
|
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To compile curl.nlm / libcurl.nlm you need:
|
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- either any gcc / nlmconv, or CodeWarrior 7 PDK 4 or later.
|
|
- gnu make and awk running on the platform you compile on;
|
|
native Win32 versions can be downloaded from:
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http://www.gknw.net/development/prgtools/
|
|
- recent Novell LibC SDK available from:
|
|
http://developer.novell.com/ndk/libc.htm
|
|
- or recent Novell CLib SDK available from:
|
|
http://developer.novell.com/ndk/clib.htm
|
|
- optional recent Novell CLDAP SDK available from:
|
|
http://developer.novell.com/ndk/cldap.htm
|
|
- optional zlib sources (static or dynamic linking with zlib.imp);
|
|
sources with NetWare Makefile can be obtained from:
|
|
http://www.gknw.net/mirror/zlib/
|
|
- optional OpenSSL sources (version 0.9.8 or later build with BSD sockets);
|
|
you can find precompiled packages at:
|
|
http://www.gknw.net/development/ossl/netware/
|
|
for CLIB-based builds OpenSSL needs to be patched to build with BSD
|
|
sockets (currently only a winsock-based CLIB build is supported):
|
|
http://www.gknw.net/development/ossl/netware/patches/v_0.9.8e/openssl-0.9.8e.diff
|
|
- optional SSH2 sources (version 0.17 or later);
|
|
|
|
Set a search path to your compiler, linker and tools; on Linux make
|
|
sure that the var OSTYPE contains the string 'linux'; set the var
|
|
NDKBASE to point to the base of your Novell NDK; and then type
|
|
'make netware' from the top source directory; other targets available
|
|
are 'netware-ssl', 'netware-ssl-zlib', 'netware-zlib' and 'netware-ares';
|
|
if you need other combinations you can control the build with the
|
|
environment variables WITH_SSL, WITH_ZLIB, WITH_ARES, WITH_SSH2, and
|
|
ENABLE_IPV6; you can set LINK_STATIC=1 to link curl.nlm statically.
|
|
By default LDAP support is enabled, however currently you will need a patch
|
|
in order to use the CLDAP NDK with BSD sockets (Novell Bug 300237):
|
|
http://www.gknw.net/test/curl/cldap_ndk/ldap_ndk.diff
|
|
I found on some Linux systems (RH9) that OS detection didn't work although
|
|
a 'set | grep OSTYPE' shows the var present and set; I simply overwrote it
|
|
with 'OSTYPE=linux-rh9-gnu' and the detection in the Makefile worked...
|
|
Any help in testing appreciated!
|
|
Builds automatically created 8 times a day from current CVS are here:
|
|
http://www.gknw.net/mirror/curl/autobuilds/
|
|
the status of these builds can be viewed at the autobuild table:
|
|
http://curl.haxx.se/auto/
|
|
|
|
|
|
eCos
|
|
====
|
|
curl does not use the eCos build system, so you must first build eCos
|
|
separately, then link curl to the resulting eCos library. Here's a sample
|
|
configure line to do so on an x86 Linux box targeting x86:
|
|
|
|
GCCLIB=`gcc -print-libgcc-file-name` && \
|
|
CFLAGS="-D__ECOS=1 -nostdinc -I$ECOS_INSTALL/include \
|
|
-I`dirname $GCCLIB`/include" \
|
|
LDFLAGS="-nostdlib -Wl,--gc-sections -Wl,-static \
|
|
-L$ECOS_INSTALL/lib -Ttarget.ld -ltarget" \
|
|
./configure --host=i386 --disable-shared \
|
|
--without-ssl --without-zlib --disable-manual --disable-ldap
|
|
|
|
In most cases, eCos users will be using libcurl from within a custom
|
|
embedded application. Using the standard 'curl' executable from
|
|
within eCos means facing the limitation of the standard eCos C
|
|
startup code which does not allow passing arguments in main(). To
|
|
run 'curl' from eCos and have it do something useful, you will need
|
|
to either modify the eCos startup code to pass in some arguments, or
|
|
modify the curl application itself to retrieve its arguments from
|
|
some location set by the bootloader or hard-code them.
|
|
|
|
Something like the following patch could be used to hard-code some
|
|
arguments. The MTAB_ENTRY line mounts a RAM disk as the root filesystem
|
|
(without mounting some kind of filesystem, eCos errors out all file
|
|
operations which curl does not take to well). The next section synthesizes
|
|
some command-line arguments for curl to use, in this case to direct curl
|
|
to read further arguments from a file. It then creates that file on the
|
|
RAM disk and places within it a URL to download: a file: URL that
|
|
just happens to point to the configuration file itself. The results
|
|
of running curl in this way is the contents of the configuration file
|
|
printed to the console.
|
|
|
|
--- src/main.c 19 Jul 2006 19:09:56 -0000 1.363
|
|
+++ src/main.c 24 Jul 2006 21:37:23 -0000
|
|
@@ -4286,11 +4286,31 @@
|
|
}
|
|
|
|
|
|
+#ifdef __ECOS
|
|
+#include <cyg/fileio/fileio.h>
|
|
+MTAB_ENTRY( testfs_mte1,
|
|
+ "/",
|
|
+ "ramfs",
|
|
+ "",
|
|
+ 0);
|
|
+#endif
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int res;
|
|
struct Configurable config;
|
|
+#ifdef __ECOS
|
|
+ char *args[] = {"ecos-curl", "-K", "curlconf.txt"};
|
|
+ FILE *f;
|
|
+ argc = sizeof(args)/sizeof(args[0]);
|
|
+ argv = args;
|
|
+
|
|
+ f = fopen("curlconf.txt", "w");
|
|
+ if (f) {
|
|
+ fprintf(f, "--url file:curlconf.txt");
|
|
+ fclose(f);
|
|
+ }
|
|
+#endif
|
|
memset(&config, 0, sizeof(struct Configurable));
|
|
|
|
config.errors = stderr; /* default errors to stderr */
|
|
|
|
|
|
Minix
|
|
=====
|
|
curl can be compiled on Minix 3 using gcc or ACK (starting with
|
|
ver. 3.1.3). The default heap size allocated to several required
|
|
programs is inadequate for configuring and compiling curl and will
|
|
result in strange errors unless fixed (which only needs to be done
|
|
once).
|
|
|
|
ACK
|
|
---
|
|
Increase heap sizes with the commands:
|
|
|
|
chmem =1024000 /usr/lib/em_cemcom.ansi
|
|
chmem =512000 /usr/lib/i386/as
|
|
|
|
If you have bash installed:
|
|
|
|
chmem =2048000 /usr/local/bin/bash
|
|
|
|
Configure and compile with:
|
|
|
|
./configure CC=cc LD=cc GREP=grep CPPFLAGS=-D_POSIX_SOURCE=1
|
|
make
|
|
|
|
GCC
|
|
---
|
|
If you have bash installed:
|
|
|
|
chmem =2048000 /usr/local/bin/bash
|
|
|
|
Make sure gcc is in your PATH with the command:
|
|
|
|
export PATH=/usr/gnu/bin:$PATH
|
|
|
|
then configure and compile curl with:
|
|
|
|
./configure CC=gcc GREP=grep AR=/usr/gnu/bin/gar
|
|
make
|
|
|
|
|
|
CROSS COMPILE
|
|
=============
|
|
(This section was graciously brought to us by Jim Duey, with additions by
|
|
Dan Fandrich)
|
|
|
|
Download and unpack the cURL package. Version should be 7.9.1 or later.
|
|
|
|
'cd' to the new directory. (e.g. cd curl-7.12.3)
|
|
|
|
Set environment variables to point to the cross-compile toolchain and call
|
|
configure with any options you need. Be sure and specify the '--host' and
|
|
'--build' parameters at configuration time. The following script is an
|
|
example of cross-compiling for the IBM 405GP PowerPC processor using the
|
|
toolchain from MonteVista for Hardhat Linux.
|
|
|
|
(begin script)
|
|
|
|
#! /bin/sh
|
|
|
|
export PATH=$PATH:/opt/hardhat/devkit/ppc/405/bin
|
|
export CPPFLAGS="-I/opt/hardhat/devkit/ppc/405/target/usr/include"
|
|
export AR=ppc_405-ar
|
|
export AS=ppc_405-as
|
|
export LD=ppc_405-ld
|
|
export RANLIB=ppc_405-ranlib
|
|
export CC=ppc_405-gcc
|
|
export NM=ppc_405-nm
|
|
|
|
./configure --target=powerpc-hardhat-linux \
|
|
--host=powerpc-hardhat-linux \
|
|
--build=i586-pc-linux-gnu \
|
|
--prefix=/opt/hardhat/devkit/ppc/405/target/usr/local \
|
|
--exec-prefix=/usr/local
|
|
|
|
(end script)
|
|
|
|
You may also need to provide a parameter like '--with-random=/dev/urandom'
|
|
to configure as it cannot detect the presence of a random number
|
|
generating device for a target system. The '--prefix' parameter
|
|
specifies where cURL will be installed. If 'configure' completes
|
|
successfully, do 'make' and 'make install' as usual.
|
|
|
|
In some cases, you may be able to simplify the above commands to as
|
|
little as:
|
|
|
|
./configure --host=ARCH-OS
|
|
|
|
|
|
REDUCING SIZE
|
|
=============
|
|
There are a number of configure options that can be used to reduce the
|
|
size of libcurl for embedded applications where binary size is an
|
|
important factor. First, be sure to set the CFLAGS variable when
|
|
configuring with any relevant compiler optimization flags to reduce the
|
|
size of the binary. For gcc, this would mean at minimum the -Os option
|
|
and probably the -march=X option as well, e.g.:
|
|
|
|
./configure CFLAGS='-Os' ...
|
|
|
|
Be sure to specify as many --disable- and --without- flags on the configure
|
|
command-line as you can to disable all the libcurl features that you
|
|
know your application is not going to need. Besides specifying the
|
|
--disable-PROTOCOL flags for all the types of URLs your application
|
|
will not use, here are some other flags that can reduce the size of the
|
|
library:
|
|
|
|
--disable-ares (disables support for the ARES DNS library)
|
|
--disable-cookies (disables support for HTTP cookies)
|
|
--disable-crypto-auth (disables HTTP cryptographic authentication)
|
|
--disable-ipv6 (disables support for IPv6)
|
|
--disable-verbose (eliminates debugging strings and error code strings)
|
|
--enable-hidden-symbols (eliminates unneeded symbols in the shared library)
|
|
--without-libidn (disables support for the libidn DNS library)
|
|
--without-ssl (disables support for SSL/TLS)
|
|
--without-zlib (disables support for on-the-fly decompression)
|
|
|
|
The GNU linker has a number of options to reduce the size of the libcurl
|
|
dynamic libraries on some platforms even further. Specify them by giving
|
|
the options -Wl,-Bsymbolic and -Wl,-s on the gcc command-line.
|
|
Be sure also to strip debugging symbols from your binaries after
|
|
compiling using 'strip' (or the appropriate variant if cross-compiling).
|
|
If space is really tight, you may be able to remove some unneeded
|
|
sections of the shared library using the -R option to objcopy (e.g. the
|
|
.comment section).
|
|
|
|
Using these techniques it is possible to create an HTTP-only shared
|
|
libcurl library for i386 Linux platforms that is less than 90 KB in
|
|
size (as of version 7.15.4).
|
|
|
|
You may find that statically linking libcurl to your application will
|
|
result in a lower total size.
|
|
|
|
|
|
PORTS
|
|
=====
|
|
This is a probably incomplete list of known hardware and operating systems
|
|
that curl has been compiled for. If you know a system curl compiles and
|
|
runs on, that isn't listed, please let us know!
|
|
|
|
- Alpha DEC OSF 4
|
|
- Alpha Digital UNIX v3.2
|
|
- Alpha FreeBSD 4.1, 4.5
|
|
- Alpha Linux 2.2, 2.4
|
|
- Alpha NetBSD 1.5.2
|
|
- Alpha OpenBSD 3.0
|
|
- Alpha OpenVMS V7.1-1H2
|
|
- Alpha Tru64 v5.0 5.1
|
|
- HP-PA HP-UX 9.X 10.X 11.X
|
|
- HP-PA Linux
|
|
- HP3000 MPE/iX
|
|
- MIPS IRIX 6.2, 6.5
|
|
- MIPS Linux
|
|
- OS/400
|
|
- Pocket PC/Win CE 3.0
|
|
- Power AIX 3.2.5, 4.2, 4.3.1, 4.3.2, 5.1, 5.2
|
|
- PowerPC Darwin 1.0
|
|
- PowerPC Linux
|
|
- PowerPC Mac OS 9
|
|
- PowerPC Mac OS X
|
|
- SuperH4 Linux 2.6.X
|
|
- SINIX-Z v5
|
|
- Sparc Linux
|
|
- Sparc Solaris 2.4, 2.5, 2.5.1, 2.6, 7, 8, 9, 10
|
|
- Sparc SunOS 4.1.X
|
|
- StrongARM (and other ARM) RISC OS 3.1, 4.02
|
|
- StrongARM/ARM7/ARM9 Linux 2.4, 2.6
|
|
- StrongARM NetBSD 1.4.1
|
|
- TPF
|
|
- Ultrix 4.3a
|
|
- UNICOS 9.0
|
|
- i386 BeOS
|
|
- i386 DOS
|
|
- i386 eCos 1.3.1
|
|
- i386 Esix 4.1
|
|
- i386 FreeBSD
|
|
- i386 HURD
|
|
- i386 Linux 1.3, 2.0, 2.2, 2.3, 2.4, 2.6
|
|
- i386 MINIX 3.1
|
|
- i386 NetBSD
|
|
- i386 Novell NetWare
|
|
- i386 OS/2
|
|
- i386 OpenBSD
|
|
- i386 SCO unix
|
|
- i386 Solaris 2.7
|
|
- i386 Windows 95, 98, ME, NT, 2000, XP, 2003
|
|
- i386 QNX 6
|
|
- i486 ncr-sysv4.3.03 (NCR MP-RAS)
|
|
- ia64 Linux 2.3.99
|
|
- m68k AmigaOS 3
|
|
- m68k Linux
|
|
- m68k OpenBSD
|
|
- m88k dg-dgux5.4R3.00
|
|
- s390 Linux
|
|
- XScale/PXA250 Linux 2.4
|
|
|
|
Useful URLs
|
|
===========
|
|
|
|
OpenSSL http://www.openssl.org
|
|
MingW http://www.mingw.org
|
|
OpenLDAP http://www.openldap.org
|
|
Zlib http://www.gzip.org/zlib/
|
|
libssh2 http://www.libssh2.org
|
|
|
|
|