* NOTES.WIN (any supported Windows)
* NOTES.DJGPP (DOS platform with DJGPP)
* NOTES.ANDROID (obviously Android [NDK])
+ * NOTES.VALGRIND (testing with Valgrind)
Notational conventions in this document
---------------------------------------
$ 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:
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:
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
source exists.
getrandom: Use the L<getrandom(2)> 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
Don't build the AFALG engine. This option will be forced if
on a platform that does not support AFALG.
+ enable-ktls
+ Build with Kernel TLS support. This option will enable the
+ use of the Kernel TLS data-path, which can improve
+ performance and allow for the use of sendfile and splice
+ system calls on TLS sockets. The Kernel may use TLS
+ accelerators if any are available on the system.
+ This option will be forced off on systems that do not support
+ the Kernel TLS data-path.
+
enable-asan
Build with the Address sanitiser. This is a developer option
only. It may not work on all platforms and should never be
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.
+ no-cmp
+ Don't build support for CMP features
+
no-cms
Don't build support for CMS features
Don't build support for datagram based BIOs. Selecting this
option will also force the disabling of DTLS.
- 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
Don't compile in filename and line number information (e.g.
for errors and memory allocation).
+ no-fips
+ Don't compile the FIPS module
+
enable-fuzz-libfuzzer, enable-fuzz-afl
Build with support for fuzzing using either libfuzzer or AFL.
These are developer options only. They may not work on all
available if the GOST algorithms are also available through
loading an externally supplied engine.
- no-hw-padlock
- Don't build the padlock engine.
+ no-legacy
+ Don't build the legacy provider. Disabling this also disables
+ the legacy algorithms: MD2 (already disabled by default).
no-makedepend
Don't generate dependencies.
+ no-module
+ Don't build any dynamically loadable engines. This also
+ implies 'no-dynamic-engine'.
+
no-multiblock
Don't build support for writing multiple records in one
go in libssl (Note: this is a different capability to the
no-ocsp
Don't build support for OCSP.
+ no-padlockeng
+ no-hw-padlock
+ Don't build the padlock engine.
+ ('no-hw-padlock' is deprecated and should not be used)
+
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.
require additional system-dependent options! See "Note on
multi-threading" below.
+ enable-trace
+ Build with support for the integrated tracing api. See manual pages
+ OSSL_trace_set_channel(3) and OSSL_trace_enabled(3) for details.
+
no-ts
Don't build Time Stamping Authority support.
Enable additional unit test APIs. This should not typically
be used in production deployments.
+ no-uplink
+ Don't build support for UPLINK interface.
+
enable-weak-ssl-ciphers
Build support for SSL/TLS ciphers that are considered "weak"
(e.g. RC4 based ciphersuites).
Build without support for the specified algorithm, where
<alg> 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, sm2, sm3,
- sm4 or whirlpool. The "ripemd" algorithm is deprecated and
- if used is synonymous with rmd160.
+ poly1305, rc2, rc4, rmd160, scrypt, seed, siphash, siv, 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
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
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
$ 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:
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
* 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
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.
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.
$ make TESTS='[89]? -90'
+To stochastically verify that the algorithm that produces uniformly distributed
+random numbers is operating correctly (with a false positive rate of 0.01%):
+
+ $ ./util/shlib_wrap.sh test/bntest -stochastic
+
Note on multi-threading
-----------------------
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
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
projects / openssl.git / blobdiff