X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=INSTALL;h=2377449dbb9ce3d3d1e7125167a24b53aa8735a0;hp=c0e29a63d5f8a6a207ba9667a027fb7cf7187d50;hb=8c16829ebd8de96334818b2bc5a5e314b001d18c;hpb=92afda6cccdcede2f4be8ddbe5271483b1bb4a9b diff --git a/INSTALL b/INSTALL index c0e29a63d5..2377449dbb 100644 --- a/INSTALL +++ b/INSTALL @@ -1,71 +1,173 @@ - INSTALLATION ON THE UNIX PLATFORM - --------------------------------- + OPENSSL INSTALLATION + -------------------- - [See INSTALL.W32 for instructions for compiling OpenSSL on Windows systems, - and INSTALL.VMS for installing on OpenVMS systems.] + [Installation on DOS (with djgpp), MacOS (before MacOS X) + and NetWare is described in INSTALL.DJGPP, INSTALL.MacOS + and INSTALL.NW. + + This document describes installation on the main supported operating + systems, currently the Linux/Unix family, OpenVMS and Windows.] To install OpenSSL, you will need: - * Perl 5 + * make + * Perl 5 with core modules (please read README.PERL) + * The perl module Text::Template (please read README.PERL) * an ANSI C compiler - * a supported Unix operating system + * a development environment in the form of development libraries and C + header files + * a supported operating system + + For more details regarding specific platforms, there are these notes + available: + + * NOTES.VMS (OpenVMS) + * NOTES.WIN (any Windows except for Windows CE) Quick Start ----------- If you want to just get on with it, do: - $ ./config - $ make - $ make test - $ make install + on Unix: - [If any of these steps fails, see section Installation in Detail below.] + $ ./config + $ make + $ make test + $ make install - 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: + on OpenVMS: - $ ./config --prefix=/usr/local --openssldir=/usr/local/openssl + $ @config + $ mms + $ mms test + $ mms install + on Windows (only pick one of the targets for configuration): - Configuration Options - --------------------- + $ perl Configure { VC-WIN32 | VC-WIN64A | VC-WIN64I | VC-CE } + $ nmake + $ nmake test + $ nmake install + + [If any of these steps fails, see section Installation in Detail below.] - There are several options to ./config to customize the build: + This will build and install OpenSSL in the default location, which is: - --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. + Unix: normal installation directories under /usr/local + OpenVMS: SYS$COMMON:[OPENSSL-'version'...], where 'version' is the + OpenSSL version number ('major'_'minor'). + Windows: currently don't have an install function - --openssldir=DIR Directory for OpenSSL files. If no prefix is specified, - the library files and binaries are also installed there. + If you want to install it anywhere else, run config like this: - rsaref Build with RSADSI's RSAREF toolkit (this assumes that - librsaref.a is in the library search path). + On Unix: - no-threads Don't try to build with support for multi-threaded - applications. + $ ./config --prefix=/opt/openssl --openssldir=/usr/local/ssl - threads Build with support for multi-threaded applications. - This will usually require additional system-dependent options! - See "Note on multi-threading" below. + On OpenVMS: - no-asm Do not use assembler code. + $ @config --prefix=PROGRAM:[INSTALLS] --openssldir=SYS$MANAGER:[OPENSSL] - 386 Use the 80386 instruction set only (the default x86 code is - more efficient, but requires at least a 486). - no- Build without the specified cipher (bf, cast, des, dh, dsa, - hmac, md2, md5, mdc2, rc2, rc4, rc5, rsa, sha). - The crypto/ directory can be removed after running - "make depend". + Configuration Options + --------------------- - -Dxxx, -lxxx, -Lxxx, -fxxx, -Kxxx These system specific options will - be passed through to the compiler to allow you to - define preprocessor symbols, specify additional libraries, - library directories or other compiler options. + There are several options to ./config (or ./Configure) to customize + the build (note that for Windows, the defaults for --prefix and + --openssldir depend in what configuration is used and what Windows + implementation OpenSSL is built on. More notes on this in NOTES.WIN): + + --prefix=DIR The top of the installation directory tree. Defaults are: + + Unix: /usr/local + Windows: C:\Program Files\OpenSSL + or C:\Program Files (x86)\OpenSSL + OpenVMS: SYS$COMMON:[OPENSSL-'version'] + + --openssldir=DIR Directory for OpenSSL configuration files, and also the + default certificate and key store. Defaults are: + + Unix: PREFIX/ssl (PREFIX is given by --prefix) + Windows: C:\Program Files\Common Files\SSL + or C:\Program Files (x86)\Common Files\SSL + OpenVMS: SYS$COMMON:[SSL] + + --api=x.y.z Don't build with support for deprecated APIs below the + specified version number. For example "--api=1.1.0" will + remove support for all APIS that were deprecated in OpenSSL + version 1.1.0 or below. + + no-deprecated Don't build with support for any deprecated APIs. This is the + same as using "--api" and supplying the latest version + number. + + no-autoalginit Don't automatically load all supported ciphers and digests. + Typically OpenSSL will make available all of its supported + ciphers and digests. For a statically linked application this + may be undesirable if small executable size is an objective. + This only affects libcrypto. Ciphers and digests will have to + be loaded manually using EVP_add_cipher() and + EVP_add_digest() if this option is used. + + no-autoerrinit Don't automatically load all libcrypto/libssl error strings. + Typically OpenSSL will automatically load human readable + error strings. For a statically linked application this may + be undesirable if small executable size is an objective. + + 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 On Intel hardware, 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 extension 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- Build without the specified algorithm (bf, cast, des, dh, + dsa, hmac, md2, md5, mdc2, rc2, rc4, rc5, rsa, sha). + + -Dxxx, -lxxx, These system specific options will be passed through to the + -Lxxx, -fxxx, compiler to allow you to define preprocessor symbols, specify + -mXXX, -Kxxx additional libraries, library directories or other compiler + options. Installation in Detail @@ -73,12 +175,22 @@ 1a. Configure OpenSSL for your operation system automatically: - $ ./config [options] + NOTE: This is not available on Windows. + + $ ./config [options] # Unix + + or + + $ @config [options] ! OpenVMS + + For the remainder of this text, the Unix form will be used in all + examples, please use the appropriate form for your platform. 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 it did not get it correct or you want to - use a different compiler then go to step 1b. Otherwise go to step 2. + 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: @@ -89,141 +201,228 @@ OpenSSL knows about a range of different operating system, hardware and compiler combinations. To see the ones it knows about, run - $ ./Configure + $ ./Configure # Unix + + or + + $ perl Configure # All other platforms + + For the remainder of this text, the Unix form will be used in all + examples, please use the appropriate form for your platform. 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 + 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. + If your system isn't listed, you will have to create a configuration + file named Configurations/{something}.conf and add the correct + configuration for your system. See the available configs as examples + and read Configurations/README and Configurations/README.design for + more information. + + The generic configurations "cc" or "gcc" should usually work on 32 bit + Unix-like systems. - Configure creates the file Makefile.ssl from Makefile.org and + Configure creates a build file ("Makefile" on Unix and "descrip.mms" + on OpenVMS) from a suitable template in Configurations, and defines various macros in crypto/opensslconf.h (generated from crypto/opensslconf.h.in). - 2. Build OpenSSL by running: + 1c. Configure OpenSSL for building outside of the source tree. - $ make + OpenSSL can be configured to build in a build directory separate from + the directory with the source code. It's done by placing yourself in + some other directory and invoking the configuration commands from + there. - 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. + Unix example: - If "make" fails, please report the problem to . - Include the output of "./config -t" and the OpenSSL version - number in your message. + $ mkdir /var/tmp/openssl-build + $ cd /var/tmp/openssl-build + $ /PATH/TO/OPENSSL/SOURCE/config [options] - 3. After a successful build, the libraries should be tested. Run: + or - $ make test + $ /PATH/TO/OPENSSL/SOURCE/Configure [target] [options] - If a test fails, try removing any compiler optimization flags from - the CFLAGS line in Makefile.ssl and run "make clean; make". Please - send a bug report to , including the - output of "openssl version -a" and of the failed test. + OpenVMS example: - 4. If everything tests ok, install OpenSSL with + $ set default sys$login: + $ create/dir [.tmp.openssl-build] + $ set default [.tmp.openssl-build] + $ @[PATH.TO.OPENSSL.SOURCE]config {options} - $ make install + or - This will create the installation directory (if it does not exist) and - then create the following subdirectories: + $ @[PATH.TO.OPENSSL.SOURCE]Configure {target} {options} - certs Initially empty, this is the default location - for certificate files. - misc Various scripts. - private Initially empty, this is the default location - for private key files. + Windows example: - If you didn't chose a different installation prefix, lib also contains - the library files themselves, and the following additional subdirectories - will be created: + $ C: + $ mkdir \temp-openssl + $ cd \temp-openssl + $ perl d:\PATH\TO\OPENSSL\SOURCE\Configure {target} {options} - 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. + Paths can be relative just as well as absolute. Configure will + do its best to translate them to relative paths whenever possible. - 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 + 2. Build OpenSSL by running: - $ make INSTALL_PREFIX=/tmp/package-root install + $ make # Unix + $ mms ! (or mmk) OpenVMS + $ nmake # Windows - (or specify "--install_prefix=/tmp/package-root" as a configure - option). The specified prefix will be prepended to all - installation target filenames. + This will build the OpenSSL libraries (libcrypto.a and libssl.a on + Unix, corresponding on other platforms) and the OpenSSL binary + ("openssl"). The libraries will be built in the top-level directory, + and the binary will be in the "apps" subdirectory. + If the build 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 (note that your message + will be recorded in the request tracker publicly readable at + https://www.openssl.org/community/index.html#bugs and will be + forwarded to a public mailing list). Please check out the request + tracker. Maybe the bug was already reported or has already been + fixed. - 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 + [If you encounter assembler error messages, try the "no-asm" + configuration option as an immediate fix.] - #include + Compiling parts of OpenSSL with gcc and others with the system + compiler will result in unresolved symbols on some systems. - instead of "#include ", which was used with library versions - up to OpenSSL 0.9.2b. + 3. After a successful build, the libraries should be tested. Run: - If you install a new version of OpenSSL over an old library version, - you should delete the old header files in the include directory. + $ make test # Unix + $ mms test ! OpenVMS + $ nmake test # Windows - Compatibility issues: + If some tests fail, look at the output. There may be reasons for + the failure that isn't a problem in OpenSSL itself (like a + malfunction with Perl). You may want increased verbosity, that + can be accomplished like this: - * COMPILING existing applications + $ HARNESS_VERBOSE=yes make test # Unix + + $ DEFINE HARNESS_VERBOSE YES + $ mms test ! OpenVMS + + $ set HARNESS_VERBOSE=yes + $ nmake test # Windows + + If you want to run just one or a few specific tests, you can use + the make variable TESTS to specify them, like this: + + $ make TESTS='test_rsa test_dsa' test # Unix + $ mms/macro="TESTS=test_rsa test_dsa" test ! OpenVMS + $ nmake TESTS='test_rsa test_dsa' test # Windows + + And of course, you can combine (Unix example shown): + + $ HARNESS_VERBOSE=yes make TESTS='test_rsa test_dsa' test + + You can find the list of available tests like this: + + $ make list-tests # Unix + $ mms list-tests ! OpenVMS + $ nmake list-tests # Windows + + Have a look at the manual for the perl module Test::Harness to + see what other HARNESS_* variables there are. - To compile an application that uses old filenames -- e.g. - "#include " --, it will usually be enough to find - the CFLAGS definition in the application's Makefile and - add a C option such as + If you find a problem with OpenSSL itself, try removing any + compiler optimization flags from the CFLAGS line in Makefile and + run "make clean; make" or corresponding. - -I/usr/local/ssl/include/openssl + Please send a bug reports to . - to it. + 4. If everything tests ok, install OpenSSL with + + $ make install # Unix + $ mms install ! OpenVMS + + This will install all the software components in this directory + tree under PREFIX (the directory given with --prefix or its + default): + + Unix: + + bin/ Contains the openssl binary and a few other + utility scripts. + include/openssl + Contains the header files needed if you want + to build your own programs that use libcrypto + or libssl. + lib Contains the OpenSSL library files. + lib/engines Contains the OpenSSL dynamically loadable engines. + share/man/{man1,man3,man5,man7} + Contains the OpenSSL man-pages. + share/doc/openssl/html/{man1,man3,man5,man7} + Contains the HTML rendition of the man-pages. + + OpenVMS ('arch' is replaced with the architecture name, "Alpha" + or "ia64"): + + [.EXE.'arch'] Contains the openssl binary and a few other + utility scripts. + [.include.openssl] + Contains the header files needed if you want + to build your own programs that use libcrypto + or libssl. + [.LIB.'arch'] Contains the OpenSSL library files. + [.ENGINES.'arch'] + Contains the OpenSSL dynamically loadable engines. + [.SYS$STARTUP] Contains startup, login and shutdown scripts. + These define appropriate logical names and + command symbols. + + + Additionally, install will add the following directories under + OPENSSLDIR (the directory given with --openssldir or its default) + for you convenience: + + certs Initially empty, this is the default location + for certificate files. + private Initially empty, this is the default location + for private key files. + misc Various scripts. - But don't delete the existing -I option that points to - the ..../include directory! Otherwise, OpenSSL header files - could not #include each other. + 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 - * WRITING applications + $ make DESTDIR=/tmp/package-root install # Unix + $ mms/macro="DESTDIR=TMP:[PACKAGE-ROOT]" install ! OpenVMS - 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: + The specified destination directory will be prepended to all + installation target paths. - - Always use the new filename of OpenSSL header files, - e.g. #include . + Compatibility issues with previous OpenSSL versions: - - 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: + * COMPILING existing applications - incl/openssl: - -mkdir incl - cd $(OPENSSLDIR) # Check whether the directory really exists - -ln -s `cd $(OPENSSLDIR); pwd`/include incl/openssl + OpenSSL 1.1 hides a number of structures that were previously + open. This includes all internal libssl structures and a number + of EVP types. Accessor functions have been added to allow + controlled access to the structures' data. - You will have to add "incl/openssl" to the dependencies - of those C files that include some OpenSSL header file. + This means that some software needs to be rewritten to adapt to + the new ways of doing things. This often amounts to allocating + an instance of a structure explicitly where you could previously + allocate them on the stack as automatic variables, and using the + provided accessor functions where you would previously access a + structure's field directly. - - 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 , - while the header files still are able to #include each other - with names of the form . + Some APIs have changed as well. However, older APIs have been + preserved when possible. Note on multi-threading @@ -236,144 +435,39 @@ necessary). On other systems, to enable support for multi-threading, you will have - to specifiy at least two options: "threads", and a system-dependent option. + 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.) + OpenSSL provides built-in support for two threading models: pthreads (found on + most UNIX/Linux systems), and Windows threads. No other threading models are + supported. If your platform does not provide pthreads or Windows threads then + you should Configure with the "no-threads" option. + + 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 most 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. + + 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. --------------------------------------------------------------------------------- -The orignal Unix build instructions from SSLeay follow. -Note: some of this may be out of date and no longer applicable --------------------------------------------------------------------------------- - -# When bringing the SSLeay distribution back from the evil intel world -# of Windows NT, do the following to make it nice again under unix :-) -# You don't normally need to run this. -sh util/fixNT.sh # This only works for NT now - eay - 21-Jun-1996 - -# If you have perl, and it is not in /usr/local/bin, you can run -perl util/perlpath.pl /new/path -# and this will fix the paths in all the scripts. DO NOT put -# /new/path/perl, just /new/path. The build -# environment always run scripts as 'perl perlscript.pl' but some of the -# 'applications' are easier to usr with the path fixed. - -# Edit crypto/cryptlib.h, tools/c_rehash, and Makefile.ssl -# to set the install locations if you don't like -# the default location of /usr/local/ssl -# Do this by running -perl util/ssldir.pl /new/ssl/home -# if you have perl, or by hand if not. - -# If things have been stuffed up with the sym links, run -make -f Makefile.ssl links -# This will re-populate lib/include with symlinks and for each -# directory, link Makefile to Makefile.ssl - -# Setup the machine dependent stuff for the top level makefile -# and some select .h files -# If you don't have perl, this will bomb, in which case just edit the -# top level Makefile.ssl -./Configure 'system type' - -# The 'Configure' command contains default configuration parameters -# for lots of machines. Configure edits 5 lines in the top level Makefile -# It modifies the following values in the following files -Makefile.ssl CC CFLAG EX_LIBS BN_MULW -crypto/des/des.h DES_LONG -crypto/des/des_locl.h DES_PTR -crypto/md2/md2.h MD2_INT -crypto/rc4/rc4.h RC4_INT -crypto/rc4/rc4_enc.c RC4_INDEX -crypto/rc2/rc2.h RC2_INT -crypto/bf/bf_locl.h BF_INT -crypto/idea/idea.h IDEA_INT -crypto/bn/bn.h BN_LLONG (and defines one of SIXTY_FOUR_BIT, - SIXTY_FOUR_BIT_LONG, THIRTY_TWO_BIT, - SIXTEEN_BIT or EIGHT_BIT) -Please remember that all these files are actually copies of the file with -a .org extention. So if you change crypto/des/des.h, the next time -you run Configure, it will be runover by a 'configured' version of -crypto/des/des.org. So to make the changer the default, change the .org -files. The reason these files have to be edited is because most of -these modifications change the size of fundamental data types. -While in theory this stuff is optional, it often makes a big -difference in performance and when using assember, it is importaint -for the 'Bignum bits' match those required by the assember code. -A warning for people using gcc with sparc cpu's. Gcc needs the -mv8 -flag to use the hardware multiply instruction which was not present in -earlier versions of the sparc CPU. I define it by default. If you -have an old sparc, and it crashes, try rebuilding with this flag -removed. I am leaving this flag on by default because it makes -things run 4 times faster :-) - -# clean out all the old stuff -make clean - -# Do a make depend only if you have the makedepend command installed -# This is not needed but it does make things nice when developing. -make depend - -# make should build everything -make - -# fix up the demo certificate hash directory if it has been stuffed up. -make rehash - -# test everything -make test - -# install the lot -make install - -# It is worth noting that all the applications are built into the one -# program, ssleay, which is then has links from the other programs -# names to it. -# The applicatons can be built by themselves, just don't define the -# 'MONOLITH' flag. So to build the 'enc' program stand alone, -gcc -O2 -Iinclude apps/enc.c apps/apps.c libcrypto.a - -# Other useful make options are -make makefile.one -# which generate a 'makefile.one' file which will build the complete -# SSLeay distribution with temp. files in './tmp' and 'installable' files -# in './out' - -# Have a look at running -perl util/mk1mf.pl help -# this can be used to generate a single makefile and is about the only -# way to generate makefiles for windows. - -# There is actually a final way of building SSLeay. -gcc -O2 -c -Icrypto -Iinclude crypto/crypto.c -gcc -O2 -c -Issl -Iinclude ssl/ssl.c -# and you now have the 2 libraries as single object files :-). -# If you want to use the assember code for your particular platform -# (DEC alpha/x86 are the main ones, the other assember is just the -# output from gcc) you will need to link the assember with the above generated -# object file and also do the above compile as -gcc -O2 -DBN_ASM -c -Icrypto -Iinclude crypto/crypto.c - -This last option is probably the best way to go when porting to another -platform or building shared libraries. It is not good for development so -I don't normally use it. - -To build shared libararies under unix, have a look in shlib, basically -you are on your own, but it is quite easy and all you have to do -is compile 2 (or 3) files. - -For mult-threading, have a read of doc/threads.doc. Again it is quite -easy and normally only requires some extra callbacks to be defined -by the application. -The examples for solaris and windows NT/95 are in the mt directory. - -have fun - -eric 25-Jun-1997 - -IRIX 5.x will build as a 32 bit system with mips1 assember. -IRIX 6.x will build as a 64 bit system with mips3 assember. It conforms -to n32 standards. In theory you can compile the 64 bit assember under -IRIX 5.x but you will have to have the correct system software installed.