install

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                                How To Compile

Curl has been compiled and built on numerous different operating systems.

Most systems build curl the same way (unix-style). Continue reading below for
more details if you're one of them.

If you're using Windows (95/98/NT/ME/2000/XP or similar), VMS, RISC OS or OS/2
or cross-compile, you should continue reading from one the paragraphs further
down.

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 your SSL library was compiled with rsaref (usually for use 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.

Win32
=====
 
   Without SSL:

      MingW32 (GCC-2.95) style
      ------------------------
        Run the 'mingw32.bat' file to get the proper environment variables
        set, then run 'make mingw32' in the root dir.

        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 style
      ------------
        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'

      Microsoft command line style
      ----------------------------
        Run the 'vcvars32.bat' file to get the proper environment variables
        set, then run 'nmake vc' in the root dir.

        The vcvars32.bat file is part of the Microsoft development
        environment.

      IDE-style
      -------------------------
        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.

        With VC++, add 'ws2_32.lib' to the link libs when you build curl!
        Borland seems to do that itself magically. Of course you have to make
        sure it links with the libcurl too!

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

        Microsoft note: add /Zm200 to the compiler options to increase the
        compiler's memory allocation limit, as the hugehelp.c won't compile
        due to "too long puts string".


   With SSL:

      MingW32 (GCC-2.95) style
      ------------------------
        Run the 'mingw32.bat' file to get the proper environment variables
        set, then run 'make mingw32-ssl' in the root dir.

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

      Cygwin style
      ------------
        Haven't done, nor got any reports on how to do. It should although be
        identical to the unix setup for the same purpose. See above.

      Microsoft command line style
      ----------------------------

        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.

        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.

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

          set OPENSSL_PATH=c:\openssl-0.9.7a

        lib/Makefile.vc6 depends on 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-1.1.4

        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.

      Microsoft / Borland style
      -------------------------
        If you have OpenSSL, and want curl to take advantage of it, edit your
        project properties to use the SSL include path, link with the SSL libs
        and define the USE_SSLEAY symbol.

   Disabling Specific Protocols:

      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
      CURL_DISABLE_GOPHER   disables GOPHER

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