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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/INSTALL | |
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Checked in the following released items:
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xorg-server-1.5.3.tar.gz
Diffstat (limited to 'openssl/INSTALL')
-rw-r--r-- | openssl/INSTALL | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/openssl/INSTALL b/openssl/INSTALL new file mode 100644 index 000000000..c72cc1dce --- /dev/null +++ b/openssl/INSTALL @@ -0,0 +1,350 @@ + + INSTALLATION ON THE UNIX PLATFORM + --------------------------------- + + [Installation on DOS (with djgpp), Windows, OpenVMS, MacOS (before MacOS X) + and NetWare is described in INSTALL.DJGPP, INSTALL.W32, INSTALL.VMS, + INSTALL.MacOS and INSTALL.NW. + + This document describes installation on operating systems in the Unix + family.] + + To install OpenSSL, you will need: + + * make + * Perl 5 + * an ANSI C compiler + * a development environment in form of development libraries and C + header files + * 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. + + 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-zlib Don't try to build with support for zlib compression and + decompression. + + zlib Build with support for zlib compression/decompression. + + zlib-dynamic Like "zlib", but has OpenSSL load the zlib library dynamically + when needed. This is only supported on systems where loading + of shared libraries is supported. This is the default choice. + + 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). Note: Use + compiler flags for any other CPU specific configuration, + e.g. "-m32" to build x86 code on an x64 system. + + no-sse2 Exclude SSE2 code pathes. Normally SSE2 extention is + detected at run-time, but the decision whether or not the + machine code will be executed is taken solely on CPU + capability vector. This means that if you happen to run OS + kernel which does not support SSE2 extension on Intel P4 + processor, then your application might be exposed to + "illegal instruction" exception. There might be a way + to enable support in kernel, e.g. FreeBSD kernel can be + compiled with CPU_ENABLE_SSE, and there is a way to + disengage SSE2 code pathes upon application start-up, + but if you aim for wider "audience" running such kernel, + consider no-sse2. Both 386 and no-asm options above imply + no-sse2. + + 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, -mxxx, -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 aren't problems 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 recorded in the request tracker publicly readable + via http://www.openssl.org/support/rt.html and will be forwarded to a + public mailing list). Include the output of "make report" in your message. + Please check out the request tracker. Maybe the bug was already + reported or has already been fixed. + + [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 CFLAG 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" in order to be added to the request tracker at + http://www.openssl.org/support/rt.html. + + 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 + ------------------------ + + Shared libraries have certain caveats. Binary backward compatibility + can't be guaranteed before OpenSSL version 1.0. The only reason to + use them would be to conserve memory on systems where several programs + are using OpenSSL. + + 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. + + Note on random number generation + -------------------------------- + + Availability of cryptographically secure random numbers is required for + secret key generation. OpenSSL provides several options to seed the + internal PRNG. If not properly seeded, the internal PRNG will refuse + to deliver random bytes and a "PRNG not seeded error" will occur. + On systems without /dev/urandom (or similar) device, it may be necessary + to install additional support software to obtain random seed. + Please check out the manual pages for RAND_add(), RAND_bytes(), RAND_egd(), + and the FAQ for more information. + + Note on support for multiple builds + ----------------------------------- + + OpenSSL is usually built in its source tree. Unfortunately, this doesn't + support building for multiple platforms from the same source tree very well. + It is however possible to build in a separate tree through the use of lots + of symbolic links, which should be prepared like this: + + mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" + cd objtree/"`uname -s`-`uname -r`-`uname -m`" + (cd $OPENSSL_SOURCE; find . -type f) | while read F; do + mkdir -p `dirname $F` + rm -f $F; ln -s $OPENSSL_SOURCE/$F $F + echo $F '->' $OPENSSL_SOURCE/$F + done + make -f Makefile.org clean + + OPENSSL_SOURCE is an environment variable that contains the absolute (this + is important!) path to the OpenSSL source tree. + + Also, operations like 'make update' should still be made in the source tree. |