CROSS COMPILE libcurl

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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

   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 environment variable
   when configuring with any compiler optimization flags to reduce the
   size of the binary.  For gcc, this would mean at minimum:

      env CFLAGS='-Os' ./configure ...

   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)
     --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)

   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
        - 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
        - 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
        - Ultrix 4.3a
        - i386 BeOS
        - i386 DOS
        - i386 Esix 4.1
        - i386 FreeBSD
        - i386 HURD
        - i386 Linux 1.3, 2.0, 2.2, 2.3, 2.4, 2.6
        - 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


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