install

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                                How To Compile

Installing Binary Packages
==========================

   Lots of people download binary distributions of curl and libcurl. This
   document does not describe how to install curl or libcurl using such a
   binary package. This document describes how to compile, build and install
   curl and libcurl from source code.

UNIX
====

   A normal unix installation is made in three or four steps (after you've
   unpacked the source archive):

        ./configure
        make
        make test (optional)
        make install

   You probably need to be root when doing the last command.

   If you have checked out the sources from the CVS repository, read the
   CVS-INFO on how to proceed.

   Get a full listing of all available configure options by invoking it like:

        ./configure --help

   If you want to install curl in a different file hierarchy than /usr/local,
   you need to specify that already when running configure:

        ./configure --prefix=/path/to/curl/tree

   If you happen to have write permission in that directory, you can do 'make
   install' without being root. An example of this would be to make a local
   install in your own home directory:

        ./configure --prefix=$HOME
        make
        make install

   The configure script always tries to find a working SSL library unless
   explicitly told not to. If you have OpenSSL installed in the default search
   path for your compiler/linker, you don't need to do anything special. If
   you have OpenSSL installed in /usr/local/ssl, you can run configure like:

	./configure --with-ssl

   If you have OpenSSL installed somewhere else (for example, /opt/OpenSSL,)
   you can run configure like this:

	./configure --with-ssl=/opt/OpenSSL

   If you insist on forcing a build without SSL support, even though you may
   have OpenSSL installed in your system, you can run configure like this:

        ./configure --without-ssl

   If you have OpenSSL installed, but with the libraries in one place and the
   header files somewhere else, you have to set the LDFLAGS and CPPFLAGS
   environment variables prior to running configure.  Something like this
   should work:

     (with the Bourne shell and its clones):

       CPPFLAGS="-I/path/to/ssl/include" LDFLAGS="-L/path/to/ssl/lib" \
           ./configure

     (with csh, tcsh and their clones):

       env CPPFLAGS="-I/path/to/ssl/include" LDFLAGS="-L/path/to/ssl/lib" \
       ./configure

   If you have shared SSL libs installed in a directory where your run-time
   linker doesn't find them (which usually causes configure failures), you can
   provide the -R option to ld on some operating systems to set a hard-coded
   path to the run-time linker:

        LDFLAGS=-R/usr/local/ssl/lib ./configure --with-ssl

   Another option to the previous trick, is to set LD_LIBRARY_PATH or edit the
   /etc/ld.so.conf file.

   If your SSL library was compiled with rsaref (this was common in the past
   when used in the United States), you may also need to set:

     LIBS=-lRSAglue -lrsaref
     (as suggested by Doug Kaufman)

   MORE OPTIONS

     To force configure to use the standard cc compiler if both cc and gcc are
     present, run configure like

       CC=cc ./configure
         or
       env CC=cc ./configure

     To force a static library compile, disable the shared library creation
     by running configure like:

       ./configure --disable-shared

     To tell the configure script to skip searching for thread-safe functions,
     add an option like:

       ./configure --disable-thread

     To build curl with kerberos4 support enabled, curl requires the krb4 libs
     and headers installed. You can then use a set of options to tell
     configure where those are:

          --with-krb4-includes[=DIR]   Specify location of kerberos4 headers
          --with-krb4-libs[=DIR]       Specify location of kerberos4 libs
          --with-krb4[=DIR]            where to look for Kerberos4

     In most cases, /usr/athena is the install prefix and then it works with

       ./configure --with-krb4=/usr/athena

     If you're a curl developer and use gcc, you might want to enable more
     debug options with the --enable-debug option.

     curl can be built to use a whole range of libraries to provide various
     useful services, and configure will try to auto-detect a decent
     default. But if you want to alter it, you can select how to deal with
     each individual library.

     To build with GnuTLS support instead of OpenSSL for SSL/TLS, note that
     you need to use both --without-ssl and --with-gnutls.

     To build with yassl support instead of OpenSSL or GunTLS, you must build
     yassl with its OpenSSL emulation enabled and point to that directory root
     with configure --with-ssl.

Win32
=====

   MingW32
   -------

   Run the 'mingw32.bat' file to get the proper environment variables set,
   then run 'make mingw32' in the root dir. Use  'make mingw32-ssl' to build
   curl SSL enabled.

   If you have any problems linking libraries or finding header files, be sure
   to verify that the provided "Makefile.m32" files use the proper paths, and
   adjust as necessary.

   Cygwin
   ------

   Almost identical to the unix installation. Run the configure script in the
   curl root with 'sh configure'. Make sure you have the sh executable in
   /bin/ or you'll see the configure fail towards the end.

   Run 'make'

   Dev-Cpp
   -------

   See the separate INSTALL.devcpp file for details.

   MSVC from command line
   ----------------------

   Run the 'vcvars32.bat' file to get a proper environment. The
   vcvars32.bat file is part of the Microsoft development environment and
   you may find it in 'C:\Program Files\Microsoft Visual Studio\vc98\bin'
   provided that you installed Visual C/C++ 6 in the default directory.

   Then run 'nmake vc' in curl's root directory.

   If you want to compile with zlib support, you will need to build
   zlib (http://www.gzip.org/zlib/) as well. Please read the zlib
   documentation on how to compile zlib. Define the ZLIB_PATH environment
   variable to the location of zlib.h and zlib.lib, for example:

     set ZLIB_PATH=c:\zlib-1.2.1

   Then run 'nmake vc-zlib' in curl's root directory.

   If you want to compile with SSL support you need the OpenSSL package.
   Please read the OpenSSL documentation on how to compile and install
   the OpenSSL libraries.  The build process of OpenSSL generates the
   libeay32.dll and ssleay32.dll files in the out32dll subdirectory in
   the OpenSSL home directory.  OpenSSL static libraries (libeay32.lib,
   ssleay32.lib, RSAglue.lib) are created in the out32 subdirectory.

   Before running nmake define the OPENSSL_PATH environment variable with
   the root/base directory of OpenSSL, for example:

     set OPENSSL_PATH=c:\openssl-0.9.7d

   Then run 'nmake vc-ssl' or 'nmake vc-ssl-dll' in curl's root
   directory.  'nmake vc-ssl' will create a libcurl static and dynamic
   libraries in the lib subdirectory, as well as a statically linked
   version of curl.exe in the src subdirectory.  This statically linked
   version is a standalone executable not requiring any DLL at
   runtime. This make method requires that you have the static OpenSSL
   libraries available in OpenSSL's out32 subdirectory.
   'nmake vc-ssl-dll' creates the libcurl dynamic library and
   links curl.exe against libcurl and OpenSSL dynamically.
   This executable requires libcurl.dll and the OpenSSL DLLs
   at runtime.
   Run 'nmake vc-ssl-zlib' to build with both ssl and zlib support.

   Borland C++ compiler
   ---------------------

   compile openssl

   Make sure you include the paths to curl/include and openssl/inc32 in
   your bcc32.cnf file

   eg : -I"c:\Bcc55\include;c:\path_curl\include;c:\path_openssl\inc32"

   Check to make sure that all of the sources listed in lib/Makefile.b32
   are present in the /path_to_curl/lib directory. (Check the src
   directory for missing ones.)

   Make sure the environment variable "BCCDIR" is set to the install
   location for the compiler eg : c:\Borland\BCC55

   command line:
   make -f /path_to_curl/lib/Makefile-ssl.b32

   compile simplessl.c with appropriate links

   c:\curl\docs\examples\> bcc32 -L c:\path_to_curl\lib\libcurl.lib
                                 -L c:\borland\bcc55\lib\psdk\ws2_32.lib
                                 -L c:\openssl\out32\libeay32.lib
                                 -L c:\openssl\out32\ssleay32.lib
                                 simplessl.c


   MSVC IDE
   --------

   If you use VC++, Borland or similar compilers. Include all lib source
   files in a static lib "project" (all .c and .h files that is).
   (you should name it libcurl or similar)

   Make the sources in the src/ drawer be a "win32 console application"
   project. Name it curl.

   For VC++ 6, there's an included Makefile.vc6 that should be possible
   to use out-of-the-box.


   Disabling Specific Protocols in Win32 builds
   --------------------------------------------

   The configure utility, unfortunately, is not available for the Windows
   environment, therefore, you cannot use the various disable-protocol
   options of the configure utility on this platform.

   However, you can use the following defines to disable specific
   protocols:

   HTTP_ONLY             disables all protocols except HTTP
   CURL_DISABLE_FTP      disables FTP
   CURL_DISABLE_LDAP     disables LDAP
   CURL_DISABLE_TELNET   disables TELNET
   CURL_DISABLE_DICT     disables DICT
   CURL_DISABLE_FILE     disables FILE

   If you want to set any of these defines you have the following
   possibilities:

   - Modify lib/setup.h
   - Modify lib/Makefile.vc6
   - Add defines to Project/Settings/C/C++/General/Preprocessor Definitions
     in the curllib.dsw/curllib.dsp Visual C++ 6 IDE project.


   Important static libcurl usage note
   -----------------------------------

   When building an application that uses the static libcurl library, you must
   add '-DCURL_STATICLIB' to your CFLAGS.  Otherwise the linker will look for
   dynamic import symbols.


IBM OS/2
========

   Building under OS/2 is not much different from building under unix.
   You need:

      - emx 0.9d
      - GNU make
      - GNU patch
      - ksh
      - GNU bison
      - GNU file utilities
      - GNU sed
      - autoconf 2.13

   If you want to build with OpenSSL or OpenLDAP support, you'll need to
   download those libraries, too. Dirk Ohme has done some work to port SSL
   libraries under OS/2, but it looks like he doesn't care about emx.  You'll
   find his patches on: http://come.to/Dirk_Ohme

   If during the linking you get an error about _errno being an undefined
   symbol referenced from the text segment, you need to add -D__ST_MT_ERRNO__
   in your definitions.