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How To Compile
Curl has been compiled and built on numerous different operating systems. The
way to proceed is mainly divided in two different ways: the unix way or the
windows way.
If you're using Windows (95/98/NT/ME/2000 or whatever) or OS/2, you should
continue reading from the Win32 or OS/2 headers further down. All other
systems should be capable of being installed as described below.
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 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
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 e.g /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 it 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'll 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)
KNOWN PROBLEMS
If you happen to have autoconf installed, but a version older than 2.12
you will get into trouble. Then you can still build curl by issuing these
commands (note that this requires curl to be built staticly): (from Ralph
Beckmann)
./configure [...]
cd lib; make; cd ..
cd src; make; cd ..
cp src/curl elsewhere/bin/
As suggested by David West, you can make a faked version of autoconf and
autoheader:
----start of autoconf----
#!/bin/bash
#fake autoconf for building curl
if [ "$1" = "--version" ] then
echo "Autoconf version 2.13"
fi
----end of autoconf----
Then make autoheader a symbolic link to the same script and make sure
they're executable and set to appear in the path *BEFORE* the actual (but
obsolete) autoconf and autoheader scripts.
MORE OPTIONS
Remember, 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 your system support shared libraries, but you want to built a static
version only, you can disable building the shared version by using:
./configure --disable-shared
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 'wsock32.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
----------------------------
Run the 'vcvars32.bat' file to get the proper environment variables
set, then run 'nmake vc-ssl' in the root dir.
The vcvars32.bat file is part of the Microsoft development
environment.
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.
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.
If everything seems to work fine but there's no curl.exe, you need to add
-Zexe to your linker flags.
If you're getting huge binaries, probably your makefiles have the -g in
CFLAGS.
PORTS
=====
This is a probably incomplete list of known hardware and
operating systems that curl has been compiled for:
- Ultrix 4.3a
- SINIX-Z v5
- Alpha DEC OSF 4
- Alpha Digital UNIX v3.2
- Alpha FreeBSD 4.1
- Alpha Linux 2.2.16
- Alpha Tru64 v5.0 5.1
- HP-PA HP-UX 9.X 10.X 11.X
- MIPS IRIX 6.2, 6.5
- Power AIX 4.2, 4.3.1, 4.3.2
- PowerPC Darwin 1.0
- PowerPC Linux
- PowerPC Mac OS X
- Sparc Linux
- Sparc Solaris 2.4, 2.5, 2.5.1, 2.6, 7, 8
- Sparc SunOS 4.1.X
- i386 BeOS
- i386 FreeBSD
- i386 Linux 1.3, 2.0, 2.2, 2.3, 2.4
- i386 NetBSD
- i386 OS/2
- i386 OpenBSD
- i386 SCO unix
- i386 Solaris 2.7
- i386 Windows 95, 98, ME, NT, 2000
- ia64 Linux 2.3.99
- m68k AmigaOS 3
- m68k OpenBSD
- StrongARM NetBSD 1.4.1
OpenSSL
=======
You'll find OpenSSL information at:
http://www.openssl.org
MingW32/Cygwin
==============
You'll find MingW32 and Cygwin information at:
http://www.mingw.org
OpenLDAP
========
You'll find OpenLDAP information at:
http://www.openldap.org
You need to install it with shared libraries, which is enabled when running
the ldap configure script with "--enable-shared". With my linux 2.0.36
kernel I also had to disable using threads (with --without-threads),
because the configure script couldn't figure out my system.