X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=INSTALL;h=328ad2baf480b4747ba66a72a65c66b85ad31b40;hb=9aba5c5ff2ccfe59e1c7d77918804919d549ebbc;hp=77de5703ab13d3e2f2fb9d1f4a843079a835a566;hpb=886c2e614fc1e78e658122bf6f6bccdd7dd23857;p=oweals%2Fopenssl.git diff --git a/INSTALL b/INSTALL index 77de5703ab..328ad2baf4 100644 --- a/INSTALL +++ b/INSTALL @@ -2,7 +2,8 @@ -------------------- This document describes installation on all supported operating - systems (the Linux/Unix family including Mac OS/X, OpenVMS and Windows) + systems (the Unix/Linux family (which includes Mac OS/X), OpenVMS, + and Windows). To install OpenSSL, you will need: @@ -97,6 +98,9 @@ $ nmake test $ nmake install + Note that in order to perform the install step above you need to have + appropriate permissions to write to the installation directory. + If any of these steps fails, see section Installation in Detail below. This will build and install OpenSSL in the default location, which is: @@ -106,6 +110,12 @@ OpenSSL version number with underscores instead of periods. Windows: C:\Program Files\OpenSSL or C:\Program Files (x86)\OpenSSL + The installation directory should be appropriately protected to ensure + unprivileged users cannot make changes to OpenSSL binaries or files, or install + engines. If you already have a pre-installed version of OpenSSL as part of + your Operating System it is recommended that you do not overwrite the system + version and instead install to somewhere else. + If you want to install it anywhere else, run config like this: On Unix: @@ -134,7 +144,10 @@ 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. + version 1.1.0 or below. This is a rather specialized option + for developers. If you just intend to remove all deprecated + APIs entirely (up to the current version), it is easier + to add the 'no-deprecated' option instead (see below). --cross-compile-prefix=PREFIX The PREFIX to include in front of commands for your @@ -144,8 +157,8 @@ put together one-size-fits-all instructions. You might have to pass more flags or set up environment variables to actually make it work. Android and iOS cases are - discussed in corresponding Configurations/10-main.cf - sections. But there are cases when this option alone is + discussed in corresponding Configurations/15-*.conf + files. But there are cases when this option alone is sufficient. For example to build the mingw64 target on Linux "--cross-compile-prefix=x86_64-w64-mingw32-" works. Naturally provided that mingw packages are @@ -156,10 +169,12 @@ "--cross-compile-prefix=mipsel-linux-gnu-" suffices in such case. Needless to mention that you have to invoke ./Configure, not ./config, and pass your target - name explicitly. + name explicitly. Also, note that --openssldir refers + to target's file system, not one you are building on. --debug - Build OpenSSL with debugging symbols. + Build OpenSSL with debugging symbols and zero optimization + level. --libdir=DIR The name of the directory under the top of the installation @@ -226,7 +241,7 @@ source exists. getrandom: Use the L or equivalent system call. - devrandom: Use the the first device from the DEVRANDOM list + devrandom: Use the first device from the DEVRANDOM list which can be opened to read random bytes. The DEVRANDOM preprocessor constant expands to "/dev/urandom","/dev/random","/dev/srandom" on @@ -255,8 +270,10 @@ no-shared option. no-asm - Do not use assembler code. On some platforms a small amount - of assembler code may still be used. + Do not use assembler code. This should be viewed as + debugging/trouble-shooting option rather than production. + On some platforms a small amount of assembler code may + still be used even with this option. no-async Do not build support for async operations. @@ -282,6 +299,19 @@ Typically OpenSSL will automatically load a system config file which configures default ssl options. + enable-buildtest-c++ + While testing, generate C++ buildtest files that + simply check that the public OpenSSL header files + are usable standalone with C++. + + Enabling this option demands extra care. For any + compiler flag given directly as configuration + option, you must ensure that it's valid for both + the C and the C++ compiler. If not, the C++ build + test will most likely break. As an alternative, + you can use the language specific variables, CFLAGS + and CXXFLAGS. + no-capieng Don't build the CAPI engine. This option will be forced if on a platform that does not support CAPI. @@ -324,6 +354,11 @@ no-dso Don't build support for loading Dynamic Shared Objects. + enable-devcryptoeng + Build the /dev/crypto engine. It is automatically selected + on BSD implementations, in which case it can be disabled with + no-devcryptoeng. + no-dynamic-engine Don't build the dynamically loaded engines. This only has an effect in a "shared" build @@ -397,6 +432,24 @@ no-pic Don't build with support for Position Independent Code. + no-pinshared By default OpenSSL will attempt to stay in memory until the + process exits. This is so that libcrypto and libssl can be + properly cleaned up automatically via an "atexit()" handler. + The handler is registered by libcrypto and cleans up both + libraries. On some platforms the atexit() handler will run on + unload of libcrypto (if it has been dynamically loaded) + rather than at process exit. This option can be used to stop + OpenSSL from attempting to stay in memory until the process + exits. This could lead to crashes if either libcrypto or + libssl have already been unloaded at the point + that the atexit handler is invoked, e.g. on a platform which + calls atexit() on unload of the library, and libssl is + unloaded before libcrypto then a crash is likely to happen. + Applications can suppress running of the atexit() handler at + run time by using the OPENSSL_INIT_NO_ATEXIT option to + OPENSSL_init_crypto(). See the man page for it for further + details. + no-posix-io Don't use POSIX IO capabilities. @@ -471,16 +524,6 @@ require additional system-dependent options! See "Note on multi-threading" below. - enable-tls13downgrade - TODO(TLS1.3): Make this enabled by default and remove the - option when TLSv1.3 is out of draft - TLSv1.3 offers a downgrade protection mechanism. This is - implemented but disabled by default. It should not typically - be enabled except for testing purposes. Otherwise this could - cause problems if a pre-RFC version of OpenSSL talks to an - RFC implementation (it will erroneously be detected as a - downgrade). - no-ts Don't build Time Stamping Authority support. @@ -547,9 +590,9 @@ Build without support for the specified algorithm, where is one of: aria, bf, blake2, camellia, cast, chacha, cmac, des, dh, dsa, ecdh, ecdsa, idea, md4, mdc2, ocb, - poly1305, rc2, rc4, rmd160, scrypt, seed, siphash, sm3, sm4 - or whirlpool. The "ripemd" algorithm is deprecated and if - used is synonymous with rmd160. + poly1305, rc2, rc4, rmd160, scrypt, seed, siphash, sm2, sm3, + sm4 or whirlpool. The "ripemd" algorithm is deprecated and + if used is synonymous with rmd160. -Dxxx, -Ixxx, -Wp, -lxxx, -Lxxx, -Wl, -rpath, -R, -framework, -static These system specific options will be recognised and @@ -565,10 +608,19 @@ Take note of the VAR=value documentation below and how these flags interact with those variables. - -xxx, +xxx + -xxx, +xxx, /xxx Additional options that are not otherwise recognised are - passed through as they are to the compiler as well. Again, - consult your compiler documentation. + passed through as they are to the compiler as well. + Unix-style options beginning with a '-' or '+' and + Windows-style options beginning with a '/' are recognized. + Again, consult your compiler documentation. + + If the option contains arguments separated by spaces, + then the URL-style notation %20 can be used for the space + character in order to avoid having to quote the option. + For example, -opt%20arg gets expanded to -opt arg. + In fact, any ASCII character can be encoded as %xx using its + hexadecimal encoding. Take note of the VAR=value documentation below and how these flags interact with those variables. @@ -619,8 +671,8 @@ Windows, and as a comma separated list of libraries on VMS. RANLIB The library archive indexer. - RC The Windows resources manipulator. - RCFLAGS Flags for the Windows reources manipulator. + RC The Windows resource compiler. + RCFLAGS Flags for the Windows resource compiler. RM The command to remove files and directories. These cannot be mixed with compiling / linking flags given @@ -647,6 +699,11 @@ CC=gcc CROSS_COMPILE=x86_64-w64-mingw32- \ ./config -DCOOKIE + If CC is set, it is advisable to also set CXX to ensure + both C and C++ compilers are in the same "family". This + becomes relevant with 'enable-external-tests' and + 'enable-buildtest-c++'. + reconf reconfigure Reconfigure from earlier data. This fetches the previous @@ -875,8 +932,11 @@ $ mms install ! OpenVMS $ nmake install # Windows - This will install all the software components in this directory - tree under PREFIX (the directory given with --prefix or its + Note that in order to perform the install step above you need to have + appropriate permissions to write to the installation directory. + + The above commands will install all the software components in this + directory tree under PREFIX (the directory given with --prefix or its default): Unix: @@ -932,6 +992,12 @@ for private key files. misc Various scripts. + The installation directory should be appropriately protected to ensure + unprivileged users cannot make changes to OpenSSL binaries or files, or + install engines. If you already have a pre-installed version of OpenSSL as + part of your Operating System it is recommended that you do not overwrite + the system version and instead install to somewhere else. + 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 @@ -946,10 +1012,10 @@ * COMPILING existing applications - OpenSSL 1.1.0 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. + Starting with version 1.1.0, OpenSSL 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. This means that some software needs to be rewritten to adapt to the new ways of doing things. This often amounts to allocating @@ -974,7 +1040,7 @@ BUILDFILE Use a different build file name than the platform default - ("Makefile" on Unixly platforms, "makefile" on native Windows, + ("Makefile" on Unix-like platforms, "makefile" on native Windows, "descrip.mms" on OpenVMS). This requires that there is a corresponding build file template. See Configurations/README for further information. @@ -1017,7 +1083,7 @@ HASHBANGPERL The command string for the Perl executable to insert in the - #! line of perl scripts that will be publically installed. + #! line of perl scripts that will be publicly installed. Default: /usr/bin/env perl Note: the value of this variable is added to the same scripts on all platforms, but it's only relevant on Unix-like platforms. @@ -1052,7 +1118,7 @@ depend Rebuild the dependencies in the Makefiles. This is a legacy - option that no longer needs to be used in OpenSSL 1.1.0. + option that no longer needs to be used since OpenSSL 1.1.0. install Install all OpenSSL components. @@ -1176,7 +1242,7 @@ part of the file name, i.e. for OpenSSL 1.1.x, 1.1 is somehow part of the name. - On most POSIXly platforms, shared libraries are named libcrypto.so.1.1 + On most POSIX platforms, shared libraries are named libcrypto.so.1.1 and libssl.so.1.1. on Cygwin, shared libraries are named cygcrypto-1.1.dll and cygssl-1.1.dll @@ -1207,7 +1273,7 @@ The seeding method can be configured using the --with-rand-seed option, which can be used to specify a comma separated list of seed methods. However in most cases OpenSSL will choose a suitable default method, - so it is not necessary to explicitely provide this option. Note also + so it is not necessary to explicitly provide this option. Note also that not all methods are available on all platforms. I) On operating systems which provide a suitable randomness source (in