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-
- INSTALLATION ON THE UNIX PLATFORM
- ---------------------------------
-
- [Installation on Windows, OpenVMS and MacOS (before MacOS X) is described
- in INSTALL.W32, INSTALL.VMS and INSTALL.MacOS.]
-
- To install OpenSSL, you will need:
-
- * Perl 5
- * an ANSI C compiler
- * a supported Unix operating system
-
- Quick Start
- -----------
-
- If you want to just get on with it, do:
-
- $ ./config
- $ make
- $ make test
- $ make install
-
- [If any of these steps fails, see section Installation in Detail below.]
-
- This will build and install OpenSSL in the default location, which is (for
- historical reasons) /usr/local/ssl. If you want to install it anywhere else,
- run config like this:
-
- $ ./config --prefix=/usr/local --openssldir=/usr/local/openssl
-
-
- Configuration Options
- ---------------------
-
- There are several options to ./config (or ./Configure) to customize
- the build:
-
- --prefix=DIR Install in DIR/bin, DIR/lib, DIR/include/openssl.
- Configuration files used by OpenSSL will be in DIR/ssl
- or the directory specified by --openssldir.
-
- --openssldir=DIR Directory for OpenSSL files. If no prefix is specified,
- the library files and binaries are also installed there.
-
- rsaref Build with RSADSI's RSAREF toolkit (this assumes that
- librsaref.a is in the library search path).
-
- no-threads Don't try to build with support for multi-threaded
- applications.
-
- threads Build with support for multi-threaded applications.
- This will usually require additional system-dependent options!
- See "Note on multi-threading" below.
-
- no-shared Don't try to create shared libraries.
-
- shared In addition to the usual static libraries, create shared
- libraries on platforms where it's supported. See "Note on
- shared libraries" below.
-
- no-asm Do not use assembler code.
-
- 386 Use the 80386 instruction set only (the default x86 code is
- more efficient, but requires at least a 486).
-
- no-<cipher> Build without the specified cipher (bf, cast, des, dh, dsa,
- hmac, md2, md5, mdc2, rc2, rc4, rc5, rsa, sha).
- The crypto/<cipher> directory can be removed after running
- "make depend".
-
- -Dxxx, -lxxx, -Lxxx, -fxxx, -Kxxx These system specific options will
- be passed through to the compiler to allow you to
- define preprocessor symbols, specify additional libraries,
- library directories or other compiler options.
-
-
- Installation in Detail
- ----------------------
-
- 1a. Configure OpenSSL for your operation system automatically:
-
- $ ./config [options]
-
- This guesses at your operating system (and compiler, if necessary) and
- configures OpenSSL based on this guess. Run ./config -t to see
- if it guessed correctly. If you want to use a different compiler, you
- are cross-compiling for another platform, or the ./config guess was
- wrong for other reasons, go to step 1b. Otherwise go to step 2.
-
- On some systems, you can include debugging information as follows:
-
- $ ./config -d [options]
-
- 1b. Configure OpenSSL for your operating system manually
-
- OpenSSL knows about a range of different operating system, hardware and
- compiler combinations. To see the ones it knows about, run
-
- $ ./Configure
-
- Pick a suitable name from the list that matches your system. For most
- operating systems there is a choice between using "cc" or "gcc". When
- you have identified your system (and if necessary compiler) use this name
- as the argument to ./Configure. For example, a "linux-elf" user would
- run:
-
- $ ./Configure linux-elf [options]
-
- If your system is not available, you will have to edit the Configure
- program and add the correct configuration for your system. The
- generic configurations "cc" or "gcc" should usually work on 32 bit
- systems.
-
- Configure creates the file Makefile.ssl from Makefile.org and
- defines various macros in crypto/opensslconf.h (generated from
- crypto/opensslconf.h.in).
-
- 2. Build OpenSSL by running:
-
- $ make
-
- This will build the OpenSSL libraries (libcrypto.a and libssl.a) and the
- OpenSSL binary ("openssl"). The libraries will be built in the top-level
- directory, and the binary will be in the "apps" directory.
-
- If "make" fails, look at the output. There may be reasons for
- the failure that isn't a problem in OpenSSL itself (like missing
- standard headers). If it is a problem with OpenSSL itself, please
- report the problem to <openssl-bugs@openssl.org> (note that your
- message will be forwarded to a public mailing list). Include the
- output of "make report" in your message.
-
- [If you encounter assembler error messages, try the "no-asm"
- configuration option as an immediate fix.]
-
- Compiling parts of OpenSSL with gcc and others with the system
- compiler will result in unresolved symbols on some systems.
-
- 3. After a successful build, the libraries should be tested. Run:
-
- $ make test
-
- If a test fails, look at the output. There may be reasons for
- the failure that isn't a problem in OpenSSL itself (like a missing
- or malfunctioning bc). If it is a problem with OpenSSL itself,
- try removing any compiler optimization flags from the CFLAGS line
- in Makefile.ssl and run "make clean; make". Please send a bug
- report to <openssl-bugs@openssl.org>, including the output of
- "make report".
-
- 4. If everything tests ok, install OpenSSL with
-
- $ make install
-
- This will create the installation directory (if it does not exist) and
- then the following subdirectories:
-
- certs Initially empty, this is the default location
- for certificate files.
- man/man1 Manual pages for the 'openssl' command line tool
- man/man3 Manual pages for the libraries (very incomplete)
- misc Various scripts.
- private Initially empty, this is the default location
- for private key files.
-
- If you didn't choose a different installation prefix, the
- following additional subdirectories will be created:
-
- bin Contains the openssl binary and a few other
- utility programs.
- include/openssl Contains the header files needed if you want to
- compile programs with libcrypto or libssl.
- lib Contains the OpenSSL library files themselves.
-
- Package builders who want to configure the library for standard
- locations, but have the package installed somewhere else so that
- it can easily be packaged, can use
-
- $ make INSTALL_PREFIX=/tmp/package-root install
-
- (or specify "--install_prefix=/tmp/package-root" as a configure
- option). The specified prefix will be prepended to all
- installation target filenames.
-
-
- NOTE: The header files used to reside directly in the include
- directory, but have now been moved to include/openssl so that
- OpenSSL can co-exist with other libraries which use some of the
- same filenames. This means that applications that use OpenSSL
- should now use C preprocessor directives of the form
-
- #include <openssl/ssl.h>
-
- instead of "#include <ssl.h>", which was used with library versions
- up to OpenSSL 0.9.2b.
-
- If you install a new version of OpenSSL over an old library version,
- you should delete the old header files in the include directory.
-
- Compatibility issues:
-
- * COMPILING existing applications
-
- To compile an application that uses old filenames -- e.g.
- "#include <ssl.h>" --, it will usually be enough to find
- the CFLAGS definition in the application's Makefile and
- add a C option such as
-
- -I/usr/local/ssl/include/openssl
-
- to it.
-
- But don't delete the existing -I option that points to
- the ..../include directory! Otherwise, OpenSSL header files
- could not #include each other.
-
- * WRITING applications
-
- To write an application that is able to handle both the new
- and the old directory layout, so that it can still be compiled
- with library versions up to OpenSSL 0.9.2b without bothering
- the user, you can proceed as follows:
-
- - Always use the new filename of OpenSSL header files,
- e.g. #include <openssl/ssl.h>.
-
- - Create a directory "incl" that contains only a symbolic
- link named "openssl", which points to the "include" directory
- of OpenSSL.
- For example, your application's Makefile might contain the
- following rule, if OPENSSLDIR is a pathname (absolute or
- relative) of the directory where OpenSSL resides:
-
- incl/openssl:
- -mkdir incl
- cd $(OPENSSLDIR) # Check whether the directory really exists
- -ln -s `cd $(OPENSSLDIR); pwd`/include incl/openssl
-
- You will have to add "incl/openssl" to the dependencies
- of those C files that include some OpenSSL header file.
-
- - Add "-Iincl" to your CFLAGS.
-
- With these additions, the OpenSSL header files will be available
- under both name variants if an old library version is used:
- Your application can reach them under names like <openssl/foo.h>,
- while the header files still are able to #include each other
- with names of the form <foo.h>.
-
-
- Note on multi-threading
- -----------------------
-
- For some systems, the OpenSSL Configure script knows what compiler options
- are needed to generate a library that is suitable for multi-threaded
- applications. On these systems, support for multi-threading is enabled
- by default; use the "no-threads" option to disable (this should never be
- necessary).
-
- On other systems, to enable support for multi-threading, you will have
- to specify at least two options: "threads", and a system-dependent option.
- (The latter is "-D_REENTRANT" on various systems.) The default in this
- case, obviously, is not to include support for multi-threading (but
- you can still use "no-threads" to suppress an annoying warning message
- from the Configure script.)
-
-
- Note on shared libraries
- ------------------------
-
- For some systems, the OpenSSL Configure script knows what is needed to
- build shared libraries for libcrypto and libssl. On these systems,
- the shared libraries are currently not created by default, but giving
- the option "shared" will get them created. This method supports Makefile
- targets for shared library creation, like linux-shared. Those targets
- can currently be used on their own just as well, but this is expected
- to change in future versions of OpenSSL.