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Note: The latest stable version is the 1.1.1 series. This is also our Long Term Support (LTS) version, supported until 11th September 2023. ...

当前最新版本 openssl 1.1.1c

先来看看./Configure提供的选项
Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]

Configuration 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):

--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.

--cross-compile-prefix=PREFIX

               The PREFIX to include in front of commands for your
               toolchain. It's likely to have to end with dash, e.g.
               a-b-c- would invoke GNU compiler as a-b-c-gcc, etc.
               Unfortunately cross-compiling is too case-specific to
               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/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
               installed. Today Debian and Ubuntu users have option to
               install a number of prepackaged cross-compilers along
               with corresponding run-time and development packages for
               "alien" hardware. To give another example
               "--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. Also, note that --openssldir refers
               to target's file system, not one you are building on.

--debug

               Build OpenSSL with debugging symbols and zero optimization
               level.

--libdir=DIR

               The name of the directory under the top of the installation
               directory tree (see the --prefix option) where libraries will
               be installed. By default this is "lib". Note that on Windows
               only ".lib" files will be stored in this location. dll files
               will always be installed to the "bin" directory.

--openssldir=DIR

               Directory for OpenSSL configuration files, and also the
               default certificate and key store.  Defaults are:

               Unix:           /usr/local/ssl
               Windows:        C:\Program Files\Common Files\SSL
                            or C:\Program Files (x86)\Common Files\SSL
               OpenVMS:        SYS$COMMON:[OPENSSL-COMMON]

--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']

--release

               Build OpenSSL without debugging symbols. This is the default.

--strict-warnings

               This is a developer flag that switches on various compiler
               options recommended for OpenSSL development. It only works
               when using gcc or clang as the compiler. If you are
               developing a patch for OpenSSL then it is recommended that
               you use this option where possible.

--with-zlib-include=DIR

               The directory for the location of the zlib include file. This
               option is only necessary if enable-zlib (see below) is used
               and the include file is not already on the system include
               path.

--with-zlib-lib=LIB

               On Unix: this is the directory containing the zlib library.
               If not provided the system library path will be used.
               On Windows: this is the filename of the zlib library (with or
               without a path). This flag must be provided if the
               zlib-dynamic option is not also used. If zlib-dynamic is used
               then this flag is optional and a default value ("ZLIB1") is
               used if not provided.
               On VMS: this is the filename of the zlib library (with or
               without a path). This flag is optional and if not provided
               then "GNV$LIBZSHR", "GNV$LIBZSHR32" or "GNV$LIBZSHR64" is
               used by default depending on the pointer size chosen.

--with-rand-seed=seed1[,seed2,...]

               A comma separated list of seeding methods which will be tried
               by OpenSSL in order to obtain random input (a.k.a "entropy")
               for seeding its cryptographically secure random number
               generator (CSPRNG). The current seeding methods are:

               os:         Use a trusted operating system entropy source.
                           This is the default method if such an entropy
                           source exists.
               getrandom:  Use the L<getrandom(2)> or equivalent system
                           call.
               devrandom:  Use the 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
                           most unix-ish operating systems.
               egd:        Check for an entropy generating daemon.
               rdcpu:      Use the RDSEED or RDRAND command if provided by
                           the CPU.
               librandom:  Use librandom (not implemented yet).
               none:       Disable automatic seeding. This is the default
                           on some operating systems where no suitable
                           entropy source exists, or no support for it is
                           implemented yet.

               For more information, see the section 'Note on random number
               generation' at the end of this document.

no-afalgeng

               Don't build the AFALG engine. This option will be forced if
               on a platform that does not support AFALG.

enable-asan

               Build with the Address sanitiser. This is a developer option
               only. It may not work on all platforms and should never be
               used in production environments. It will only work when used
               with gcc or clang and should be used in conjunction with the
               no-shared option.

no-asm

               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.

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. This option will
               force a non-shared build.

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-autoload-config

               Don't automatically load the default openssl.cnf file.
               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-cms

               Don't build support for CMS features

no-comp

               Don't build support for SSL/TLS compression. If this option
               is left enabled (the default), then compression will only
               work if the zlib or zlib-dynamic options are also chosen.

enable-crypto-mdebug

               Build support for debugging memory allocated via
               OPENSSL_malloc() or OPENSSL_zalloc().

enable-crypto-mdebug-backtrace

               As for crypto-mdebug, but additionally provide backtrace
               information for allocated memory.
               TO BE USED WITH CARE: this uses GNU C functionality, and
               is therefore not usable for non-GNU config targets.  If
               your build complains about the use of '-rdynamic' or the
               lack of header file execinfo.h, this option is not for you.
               ALSO NOTE that even though execinfo.h is available on your
               system (through Gnulib), the functions might just be stubs
               that do nothing.

no-ct

               Don't build support for Certificate Transparency.

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-dgram

               Don't build support for datagram based BIOs. Selecting this
               option will also force the disabling of DTLS.

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

no-ec

               Don't build support for Elliptic Curves.

no-ec2m

               Don't build support for binary Elliptic Curves

enable-ec_nistp_64_gcc_128

               Enable support for optimised implementations of some commonly
               used NIST elliptic curves.
               This is only supported on platforms:
               - with little-endian storage of non-byte types
               - that tolerate misaligned memory references
               - where the compiler:
                 - supports the non-standard type __uint128_t
                 - defines the built-in macro __SIZEOF_INT128__

enable-egd

               Build support for gathering entropy from EGD (Entropy
               Gathering Daemon).

no-engine

               Don't build support for loading engines.

no-err

               Don't compile in any error strings.

enable-external-tests

               Enable building of integration with external test suites.
               This is a developer option and may not work on all platforms.
               The only supported external test suite at the current time is
               the BoringSSL test suite. See the file test/README.external
               for further details.

no-filenames

               Don't compile in filename and line number information (e.g.
               for errors and memory allocation).

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
               platforms and should never be used in production environments.
               See the file fuzz/README.md for further details.

no-gost

               Don't build support for GOST based ciphersuites. Note that
               if this feature is enabled then GOST ciphersuites are only
               available if the GOST algorithms are also available through
               loading an externally supplied engine.

no-hw-padlock

               Don't build the padlock engine.

no-makedepend

               Don't generate dependencies.

no-multiblock

               Don't build support for writing multiple records in one
               go in libssl (Note: this is a different capability to the
               pipelining functionality).

no-nextprotoneg

               Don't build support for the NPN TLS extension.

no-ocsp

               Don't build support for OCSP.

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.

no-psk

               Don't build support for Pre-Shared Key based ciphersuites.

no-rdrand

               Don't use hardware RDRAND capabilities.

no-rfc3779

               Don't build support for RFC3779 ("X.509 Extensions for IP
               Addresses and AS Identifiers")

sctp

               Build support for SCTP

no-shared

               Do not create shared libraries, only static ones.  See "Note
               on shared libraries" below.

no-sock

               Don't build support for socket BIOs

no-srp

               Don't build support for SRP or SRP based ciphersuites.

no-srtp

               Don't build SRTP support

no-sse2

               Exclude SSE2 code paths from 32-bit x86 assembly modules.
               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 paths upon application
               start-up, but if you aim for wider "audience" running
               such kernel, consider no-sse2. Both the 386 and
               no-asm options imply no-sse2.

enable-ssl-trace

               Build with the SSL Trace capabilities (adds the "-trace"
               option to s_client and s_server).

no-static-engine

               Don't build the statically linked engines. This only
               has an impact when not built "shared".

no-stdio

               Don't use anything from the C header file "stdio.h" that
               makes use of the "FILE" type. Only libcrypto and libssl can
               be built in this way. Using this option will suppress
               building the command line applications. Additionally since
               the OpenSSL tests also use the command line applications the
               tests will also be skipped.

no-tests

               Don't build test programs or run any test.

no-threads

               Don't try to build with support for multi-threaded
               applications.

threads

               Build with support for multi-threaded applications. Most
               platforms will enable this by default. However if on a
               platform where this is not the case then this will usually
               require additional system-dependent options! See "Note on
               multi-threading" below.

no-ts

               Don't build Time Stamping Authority support.

enable-ubsan

               Build with the Undefined Behaviour sanitiser. This is a
               developer option only. It may not work on all platforms and
               should never be used in production environments. It will only
               work when used with gcc or clang and should be used in
               conjunction with the "-DPEDANTIC" option (or the
               --strict-warnings option).

no-ui

               Don't build with the "UI" capability (i.e. the set of
               features enabling text based prompts).

enable-unit-test

               Enable additional unit test APIs. This should not typically
               be used in production deployments.

enable-weak-ssl-ciphers

               Build support for SSL/TLS ciphers that are considered "weak"
               (e.g. RC4 based ciphersuites).

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.

386

               In 32-bit x86 builds, when generating assembly modules,
               use the 80386 instruction set only (the default x86 code
               is more efficient, but requires at least a 486). Note:
               This doesn't affect code generated by compiler, you're
               likely to complement configuration command line with
               suitable compiler-specific option.

no-

               Don't build support for negotiating the specified SSL/TLS
               protocol (one of ssl, ssl3, tls, tls1, tls1_1, tls1_2,
               tls1_3, dtls, dtls1 or dtls1_2). If "no-tls" is selected then
               all of tls1, tls1_1, tls1_2 and tls1_3 are disabled.
               Similarly "no-dtls" will disable dtls1 and dtls1_2. The
               "no-ssl" option is synonymous with "no-ssl3". Note this only
               affects version negotiation. OpenSSL will still provide the
               methods for applications to explicitly select the individual
               protocol versions.

no--method

               As for no-<prot> but in addition do not build the methods for
               applications to explicitly select individual protocol
               versions. Note that there is no "no-tls1_3-method" option
               because there is no application method for TLSv1.3. Using
               individual protocol methods directly is deprecated.
               Applications should use TLS_method() instead.

enable-

               Build with support for the specified algorithm, where <alg>
               is one of: md2 or rc5.

no-

               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.

-Dxxx, -Ixxx, -Wp, -lxxx, -Lxxx, -Wl, -rpath, -R, -framework,
-static

               These system specific options will be recognised and
               passed through to the compiler to allow you to define
               preprocessor symbols, specify additional libraries, library
               directories or other compiler options. It might be worth
               noting that some compilers generate code specifically for
               processor the compiler currently executes on. This is not
               necessarily what you might have in mind, since it might be
               unsuitable for execution on other, typically older,
               processor. Consult your compiler documentation.

               Take note of the VAR=value documentation below and how
               these flags interact with those variables.

-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.

               Take note of the VAR=value documentation below and how
               these flags interact with those variables.

VAR=value

               Assignment of environment variable for Configure.  These
               work just like normal environment variable assignments,
               but are supported on all platforms and are confined to
               the configuration scripts only.  These assignments override
               the corresponding value in the inherited environment, if
               there is one.

               The following variables are used as "make variables" and
               can be used as an alternative to giving preprocessor,
               compiler and linker options directly as configuration.
               The following variables are supported:

               AR              The static library archiver.
               ARFLAGS         Flags for the static library archiver.
               AS              The assembler compiler.
               ASFLAGS         Flags for the assembler compiler.
               CC              The C compiler.
               CFLAGS          Flags for the C compiler.
               CXX             The C++ compiler.
               CXXFLAGS        Flags for the C++ compiler.
               CPP             The C/C++ preprocessor.
               CPPFLAGS        Flags for the C/C++ preprocessor.
               CPPDEFINES      List of CPP macro definitions, separated
                               by a platform specific character (':' or
                               space for Unix, ';' for Windows, ',' for
                               VMS).  This can be used instead of using
                               -D (or what corresponds to that on your
                               compiler) in CPPFLAGS.
               CPPINCLUDES     List of CPP inclusion directories, separated
                               the same way as for CPPDEFINES.  This can
                               be used instead of -I (or what corresponds
                               to that on your compiler) in CPPFLAGS.
               HASHBANGPERL    Perl invocation to be inserted after '#!'
                               in public perl scripts (only relevant on
                               Unix).
               LD              The program linker (not used on Unix, $(CC)
                               is used there).
               LDFLAGS         Flags for the shared library, DSO and
                               program linker.
               LDLIBS          Extra libraries to use when linking.
                               Takes the form of a space separated list
                               of library specifications on Unix and
                               Windows, and as a comma separated list of
                               libraries on VMS.
               RANLIB          The library archive indexer.
               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
               on the command line.  In other words, something like this
               isn't permitted.

                   ./config -DFOO CPPFLAGS=-DBAR -DCOOKIE

               Backward compatibility note:

               To be compatible with older configuration scripts, the
               environment variables are ignored if compiling / linking
               flags are given on the command line, except for these:

               AR, CC, CXX, CROSS_COMPILE, HASHBANGPERL, PERL, RANLIB, RC
               and WINDRES

               For example, the following command will not see -DBAR:

                    CPPFLAGS=-DBAR ./config -DCOOKIE

               However, the following will see both set variables:

                    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
               command line options and environment from data saved in
               "configdata.pm", and runs the configuration process again,
               using these options and environment.
               Note: NO other option is permitted together with "reconf".
               This means that you also MUST use "./Configure" (or
               what corresponds to that on non-Unix platforms) directly
               to invoke this option.
               Note: The original configuration saves away values for ALL
               environment variables that were used, and if they weren't
               defined, they are still saved away with information that
               they weren't originally defined.  This information takes
               precedence over environment variables that are defined
               when reconfiguring.
make
make test
make install_sw

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