mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
06f81af8fc
This works nicely by addin a new no-bulk option to Configure. Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/13110)
1738 lines
58 KiB
Markdown
1738 lines
58 KiB
Markdown
Build and Install
|
|
=================
|
|
|
|
This document describes installation on all supported operating
|
|
systems (the Unix/Linux family, including macOS), OpenVMS,
|
|
and Windows).
|
|
|
|
Table of Contents
|
|
=================
|
|
|
|
- [Prerequisites](#prerequisites)
|
|
- [Notational Conventions](#notational-conventions)
|
|
- [Quick Installation Guide](#quick-installation-guide)
|
|
- [Building OpenSSL](#building-openssl)
|
|
- [Installing OpenSSL](#installing-openssl)
|
|
- [Configuration Options](#configuration-options)
|
|
- [API Level](#api-level)
|
|
- [Cross Compile Prefix](#cross-compile-prefix)
|
|
- [Build Type](#build-type)
|
|
- [Directories](#directories)
|
|
- [Compiler Warnings](#compiler-warnings)
|
|
- [ZLib Flags](#zlib-flags)
|
|
- [Seeding the Random Generator](#seeding-the-random-generator)
|
|
- [Setting the FIPS HMAC key](#setting-the-FIPS-HMAC-key)
|
|
- [Enable and Disable Features](#enable-and-disable-features)
|
|
- [Displaying configuration data](#displaying-configuration-data)
|
|
- [Installation Steps in Detail](#installation-steps-in-detail)
|
|
- [Configure](#configure-openssl)
|
|
- [Build](#build-openssl)
|
|
- [Test](#test-openssl)
|
|
- [Install](#install-openssl)
|
|
- [Advanced Build Options](#advanced-build-options)
|
|
- [Environment Variables](#environment-variables)
|
|
- [Makefile Targets](#makefile-targets)
|
|
- [Running Selected Tests](#running-selected-tests)
|
|
- [Troubleshooting](#troubleshooting)
|
|
- [Configuration Problems](#configuration-problems)
|
|
- [Build Failures](#build-failures)
|
|
- [Test Failures](#test-failures)
|
|
- [Notes](#notes)
|
|
- [Notes on multi-threading](#notes-on-multi-threading)
|
|
- [Notes on shared libraries](#notes-on-shared-libraries)
|
|
- [Notes on random number generation](#notes-on-random-number-generation)
|
|
|
|
Prerequisites
|
|
=============
|
|
|
|
To install OpenSSL, you will need:
|
|
|
|
* A "make" implementation
|
|
* Perl 5 with core modules (please read [NOTES-Perl.md](NOTES-Perl.md))
|
|
* The Perl module `Text::Template` (please read [NOTES-PERL.md](NOTES-Perl.md))
|
|
* an ANSI C compiler
|
|
* a development environment in the form of development libraries and C
|
|
header files
|
|
* a supported operating system
|
|
|
|
For additional platform specific requirements, solutions to specific
|
|
issues and other details, please read one of these:
|
|
|
|
* [NOTES-Unix.md](NOTES-Unix.md) - notes for Unix like systems
|
|
* [NOTES-VMS.md](NOTES-VMS.md) - notes related to OpenVMS
|
|
* [NOTES-Windows.txt](NOTES-Windows.txt) - notes related to the Windows platform
|
|
* [NOTES-DJGPP.md](NOTES-DJGPP.md) - building for DOS with DJGPP
|
|
* [NOTES-Android.md](NOTES-Android.md) - building for Android platforms (using NDK)
|
|
* [NOTES-Valgrind.md](NOTES-Valgrind.md) - testing with Valgrind
|
|
* [NOTES-Perl.m](NOTES-Perl.md) - some notes on Perl
|
|
|
|
Notational conventions
|
|
======================
|
|
|
|
Throughout this document, we use the following conventions.
|
|
|
|
Commands
|
|
--------
|
|
|
|
Any line starting with a dollar sign is a command line.
|
|
|
|
$ command
|
|
|
|
The dollar sign indicates the shell prompt and is not to be entered as
|
|
part of the command.
|
|
|
|
Choices
|
|
-------
|
|
|
|
Several words in curly braces separated by pipe characters indicate a
|
|
**mandatory choice**, to be replaced with one of the given words.
|
|
For example, the line
|
|
|
|
$ echo { WORD1 | WORD2 | WORD3 }
|
|
|
|
represents one of the following three commands
|
|
|
|
$ echo WORD1
|
|
- or -
|
|
$ echo WORD2
|
|
- or -
|
|
$ echo WORD3
|
|
|
|
One or several words in square brackets separated by pipe characters
|
|
denote an **optional choice**. It is similar to the mandatory choice,
|
|
but it can also be omitted entirely.
|
|
|
|
So the line
|
|
|
|
$ echo [ WORD1 | WORD2 | WORD3 ]
|
|
|
|
represents one of the four commands
|
|
|
|
$ echo WORD1
|
|
- or -
|
|
$ echo WORD2
|
|
- or -
|
|
$ echo WORD3
|
|
- or -
|
|
$ echo
|
|
|
|
Arguments
|
|
---------
|
|
|
|
**Mandatory arguments** are enclosed in double curly braces.
|
|
A simple example would be
|
|
|
|
$ type {{ filename }}
|
|
|
|
which is to be understood to use the command `type` on some file name
|
|
determined by the user.
|
|
|
|
**Optional Arguments** are enclosed in double square brackets.
|
|
|
|
[[ options ]]
|
|
|
|
Note that the notation assumes spaces around `{`, `}`, `[`, `]`, `{{`, `}}` and
|
|
`[[`, `]]`. This is to differentiate from OpenVMS directory
|
|
specifications, which also use [ and ], but without spaces.
|
|
|
|
Quick Installation Guide
|
|
========================
|
|
|
|
If you just want to get OpenSSL installed without bothering too much
|
|
about the details, here is the short version of how to build and install
|
|
OpenSSL. If any of the following steps fails, please consult the
|
|
[Installation in Detail](#installation-steps-in-detail) section below.
|
|
|
|
Building OpenSSL
|
|
----------------
|
|
|
|
Use the following commands to configure, build and test OpenSSL.
|
|
The testing is optional, but recommended if you intend to install
|
|
OpenSSL for production use.
|
|
|
|
### Unix / Linux / macOS
|
|
|
|
$ ./Configure
|
|
$ make
|
|
$ make test
|
|
|
|
### OpenVMS
|
|
|
|
Use the following commands to build OpenSSL:
|
|
|
|
$ perl Configure
|
|
$ mms
|
|
$ mms test
|
|
|
|
### Windows
|
|
|
|
If you are using Visual Studio, open a Developer Command Prompt and
|
|
issue the following commands to build OpenSSL.
|
|
|
|
$ perl Configure
|
|
$ nmake
|
|
$ nmake test
|
|
|
|
As mentioned in the [Choices](#choices) section, you need to pick one
|
|
of the four Configure targets in the first command.
|
|
|
|
Most likely you will be using the `VC-WIN64A` target for 64bit Windows
|
|
binaries (AMD64) or `VC-WIN32` for 32bit Windows binaries (X86).
|
|
The other two options are `VC-WIN64I` (Intel IA64, Itanium) and
|
|
`VC-CE` (Windows CE) are rather uncommon nowadays.
|
|
|
|
Installing OpenSSL
|
|
------------------
|
|
|
|
The following commands will install OpenSSL to a default system location.
|
|
|
|
**Danger Zone:** even if you are impatient, please read the following two
|
|
paragraphs carefully before you install OpenSSL.
|
|
|
|
For security reasons the default system location is by default not writable
|
|
for unprivileged users. So for the final installation step administrative
|
|
privileges are required. The default system location and the procedure to
|
|
obtain administrative privileges depends on the operating system.
|
|
It is recommended to compile and test OpenSSL with normal user privileges
|
|
and use administrative privileges only for the final installation step.
|
|
|
|
On some platforms OpenSSL is preinstalled as part of the Operating System.
|
|
In this case it is highly recommended not to overwrite the system versions,
|
|
because other applications or libraries might depend on it.
|
|
To avoid breaking other applications, install your copy of OpenSSL to a
|
|
[different location](#installing-to-a-different-location) which is not in
|
|
the global search path for system libraries.
|
|
|
|
Finally, if you plan on using the FIPS module, you need to read the
|
|
[Post-installation Notes](#post-installation-notes) further down.
|
|
|
|
### Unix / Linux / macOS
|
|
|
|
Depending on your distribution, you need to run the following command as
|
|
root user or prepend `sudo` to the command:
|
|
|
|
$ make install
|
|
|
|
By default, OpenSSL will be installed to
|
|
|
|
/usr/local
|
|
|
|
More precisely, the files will be installed into the subdirectories
|
|
|
|
/usr/local/bin
|
|
/usr/local/lib
|
|
/usr/local/include
|
|
...
|
|
|
|
depending on the file type, as it is custom on Unix-like operating systems.
|
|
|
|
### OpenVMS
|
|
|
|
Use the following command to install OpenSSL.
|
|
|
|
$ mms install
|
|
|
|
By default, OpenSSL will be installed to
|
|
|
|
SYS$COMMON:[OPENSSL-'version'...]
|
|
|
|
where 'version' is the OpenSSL version number with underscores instead
|
|
of periods.
|
|
|
|
### Windows
|
|
|
|
If you are using Visual Studio, open the Developer Command Prompt _elevated_
|
|
and issue the following command.
|
|
|
|
$ nmake install
|
|
|
|
The easiest way to elevate the Command Prompt is to press and hold down
|
|
the both the `<CTRL>` and `<SHIFT>` key while clicking the menu item in the
|
|
task menu.
|
|
|
|
The default installation location is
|
|
|
|
C:\Program Files\OpenSSL
|
|
|
|
for native binaries, or
|
|
|
|
C:\Program Files (x86)\OpenSSL
|
|
|
|
for 32bit binaries on 64bit Windows (WOW64).
|
|
|
|
#### Installing to a different location
|
|
|
|
To install OpenSSL to a different location (for example into your home
|
|
directory for testing purposes) run `Configure` as shown in the following
|
|
examples.
|
|
|
|
On Unix:
|
|
|
|
$ ./Configure --prefix=/opt/openssl --openssldir=/usr/local/ssl
|
|
|
|
On OpenVMS:
|
|
|
|
$ perl Configure --prefix=PROGRAM:[INSTALLS] --openssldir=SYS$MANAGER:[OPENSSL]
|
|
|
|
Note: if you do add options to the configuration command, please make sure
|
|
you've read more than just this Quick Start, such as relevant `NOTES-*` files,
|
|
the options outline below, as configuration options may change the outcome
|
|
in otherwise unexpected ways.
|
|
|
|
Configuration Options
|
|
=====================
|
|
|
|
There are several options to `./Configure` to customize the build (note that
|
|
for Windows, the defaults for `--prefix` and `--openssldir` depend on what
|
|
configuration is used and what Windows implementation OpenSSL is built on.
|
|
More notes on this in [NOTES-Windows.txt](NOTES-Windows.txt):
|
|
|
|
API Level
|
|
---------
|
|
|
|
--api=x.y[.z]
|
|
|
|
Build the OpenSSL libraries to support the API for the specified version.
|
|
If [no-deprecated](#no-deprecated) is also given, don't build with support
|
|
for deprecated APIs in or below the specified version number. For example,
|
|
addding
|
|
|
|
--api=1.1.0 no-deprecated
|
|
|
|
will remove support for all APIs that were deprecated in OpenSSL version
|
|
1.1.0 or below. This is a rather specialized option for developers.
|
|
If you just intend to remove all deprecated APIs up to the current version
|
|
entirely, just specify [no-deprecated](#no-deprecated).
|
|
If `--api` isn't given, it defaults to the current (minor) OpenSSL version.
|
|
|
|
Cross Compile Prefix
|
|
--------------------
|
|
|
|
--cross-compile-prefix=<PREFIX>
|
|
|
|
The `<PREFIX>` to include in front of commands for your toolchain.
|
|
|
|
It is 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.
|
|
|
|
For cross compilation, you must [configure manually](#manual-configuration).
|
|
Also, note that `--openssldir` refers to target's file system, not one you are
|
|
building on.
|
|
|
|
Build Type
|
|
----------
|
|
|
|
--debug
|
|
|
|
Build OpenSSL with debugging symbols and zero optimization level.
|
|
|
|
--release
|
|
|
|
Build OpenSSL without debugging symbols. This is the default.
|
|
|
|
Directories
|
|
-----------
|
|
|
|
### libdir
|
|
|
|
--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 static libraries (`*.lib`) will
|
|
be stored in this location. Shared libraries (`*.dll`) will always be
|
|
installed to the `bin/` directory.
|
|
|
|
### openssldir
|
|
|
|
--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
|
|
OpenVMS: SYS$COMMON:[OPENSSL-COMMON]
|
|
|
|
For 32bit Windows applications on Windows 64bit (WOW64), always replace
|
|
`C:\Program Files` by `C:\Program Files (x86)`.
|
|
|
|
### prefix
|
|
|
|
--prefix=DIR
|
|
|
|
The top of the installation directory tree. Defaults are:
|
|
|
|
Unix: /usr/local
|
|
Windows: C:\Program Files\OpenSSL
|
|
OpenVMS: SYS$COMMON:[OPENSSL-'version']
|
|
|
|
Compiler Warnings
|
|
-----------------
|
|
|
|
--strict-warnings
|
|
|
|
This is a developer flag that switches on various compiler options recommended
|
|
for OpenSSL development. It only works when using gcc or clang as the compiler.
|
|
If you are developing a patch for OpenSSL then it is recommended that you use
|
|
this option where possible.
|
|
|
|
ZLib Flags
|
|
----------
|
|
|
|
### with-zlib-include
|
|
|
|
--with-zlib-include=DIR
|
|
|
|
The directory for the location of the zlib include file. This option is only
|
|
necessary if [zlib](#zlib) is used and the include file is not
|
|
already on the system include path.
|
|
|
|
### with-zlib-lib
|
|
|
|
--with-zlib-lib=LIB
|
|
|
|
**On Unix**: this is the directory containing the zlib library.
|
|
If not provided the system library path will be used.
|
|
|
|
**On Windows:** this is the filename of the zlib library (with or
|
|
without a path). This flag must be provided if the
|
|
[zlib-dynamic](#zlib-dynamic) option is not also used. If `zlib-dynamic` is used
|
|
then this flag is optional and defaults to `ZLIB1` if not provided.
|
|
|
|
**On VMS:** this is the filename of the zlib library (with or without a path).
|
|
This flag is optional and if not provided then `GNV$LIBZSHR`, `GNV$LIBZSHR32`
|
|
or `GNV$LIBZSHR64` is used by default depending on the pointer size chosen.
|
|
|
|
Seeding the Random Generator
|
|
----------------------------
|
|
|
|
--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 [getrandom(2)][man-getrandom] or equivalent system call.
|
|
|
|
[man-getrandom]: http://man7.org/linux/man-pages/man2/getrandom.2.html
|
|
|
|
### 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 most unix-ish operating systems.
|
|
|
|
### egd
|
|
|
|
Check for an entropy generating daemon.
|
|
This source is ignored by the FIPS provider.
|
|
|
|
### rdcpu
|
|
|
|
Use the `RDSEED` or `RDRAND` command if provided by the CPU.
|
|
|
|
### librandom
|
|
|
|
Use librandom (not implemented yet).
|
|
This source is ignored by the FIPS provider.
|
|
|
|
### 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.
|
|
This option is ignored by the FIPS provider.
|
|
|
|
For more information, see the section [Notes on random number generation][rng]
|
|
at the end of this document.
|
|
|
|
[rng]: #notes-on-random-number-generation
|
|
|
|
Setting the FIPS HMAC key
|
|
-------------------------
|
|
|
|
--fips-key=value
|
|
|
|
As part of its self-test validation, the FIPS module must verify itself
|
|
by performing a SHA-256 HMAC computation on itself. The default key is
|
|
the SHA256 value of "the holy handgrenade of antioch" and is sufficient
|
|
for meeting the FIPS requirements.
|
|
|
|
To change the key to a different value, use this flag. The value should
|
|
be a hex string no more than 64 characters.
|
|
|
|
Enable and Disable Features
|
|
---------------------------
|
|
|
|
Feature options always come in pairs, an option to enable feature
|
|
`xxxx`, and an option to disable it:
|
|
|
|
[ enable-xxxx | no-xxxx ]
|
|
|
|
Whether a feature is enabled or disabled by default, depends on the feature.
|
|
In the following list, always the non-default variant is documented: if
|
|
feature `xxxx` is disabled by default then `enable-xxxx` is documented and
|
|
if feature `xxxx` is enabled by default then `no-xxxx` is documented.
|
|
|
|
### no-afalgeng
|
|
|
|
Don't build the AFALG engine.
|
|
|
|
This option will be forced 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 used in production environments. It will only work when used with
|
|
gcc or clang and should be used in conjunction with the [no-shared](#no-shared)
|
|
option.
|
|
|
|
### no-acvp_tests
|
|
|
|
Do not build support for Automated Cryptographic Validation Protocol (ACVP)
|
|
tests.
|
|
|
|
This is required for FIPS validation purposes. Certain ACVP tests require
|
|
access to algorithm internals that are not normally accessible.
|
|
Additional information related to ACVP can be found at
|
|
<https://github.com/usnistgov/ACVP>.
|
|
|
|
### no-asm
|
|
|
|
Do not use assembler code.
|
|
|
|
This should be viewed as debugging/troubleshooting option rather than for
|
|
production use. 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-bulk
|
|
|
|
Build only some minimal set of features.
|
|
This is a developer option used internally for CI build tests of the project.
|
|
|
|
### 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 Certificate Management Protocol (CMP)
|
|
and Certificate Request Message Format (CRMF).
|
|
|
|
### no-cms
|
|
|
|
Don't build support for Cryptographic Message Syntax (CMS).
|
|
|
|
### no-comp
|
|
|
|
Don't build support for SSL/TLS compression.
|
|
|
|
If this option is enabled (the default), then compression will only work if
|
|
the zlib or `zlib-dynamic` options are also chosen.
|
|
|
|
### enable-crypto-mdebug
|
|
|
|
This now only enables the `failed-malloc` feature.
|
|
|
|
### enable-crypto-mdebug-backtrace
|
|
|
|
This is a no-op; the project uses the compiler's address/leak sanitizer instead.
|
|
|
|
### no-ct
|
|
|
|
Don't build support for Certificate Transparency (CT).
|
|
|
|
### no-deprecated
|
|
|
|
Don't build with support for deprecated APIs up until and including the version
|
|
given with `--api` (or the current version, if `--api` wasn't specified).
|
|
|
|
### no-dgram
|
|
|
|
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 (DSO)
|
|
|
|
### enable-devcryptoeng
|
|
|
|
Build the `/dev/crypto` engine.
|
|
|
|
This option is automatically selected on the BSD platform, 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 option 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 the Entropy Gathering Daemon (EGD).
|
|
|
|
### 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 following
|
|
external test suites are currently supported:
|
|
|
|
- BoringSSL test suite
|
|
- Python PYCA/Cryptography test suite
|
|
- krb5 test suite
|
|
|
|
See the file [test/README-external.md](test/README-external.md)
|
|
for further details.
|
|
|
|
### no-filenames
|
|
|
|
Don't compile in filename and line number information (e.g. for errors and
|
|
memory allocation).
|
|
|
|
### no-fips
|
|
|
|
Don't compile the FIPS provider
|
|
|
|
### no-fips-securitychecks
|
|
|
|
Don't perform FIPS module run-time checks related to enforcement of security
|
|
parameters such as minimum security strength of keys.
|
|
|
|
### 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](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-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 pipelining functionality.
|
|
|
|
### no-nextprotoneg
|
|
|
|
Don't build support for the Next Protocol Negotiation (NPN) TLS extension.
|
|
|
|
### no-ocsp
|
|
|
|
Don't build support for Online Certificate Status Protocol (OCSP).
|
|
|
|
### no-padlockeng
|
|
|
|
Don't build the padlock engine.
|
|
|
|
### no-hw-padlock
|
|
|
|
As synonym for `no-padlockeng`. Deprecated and should not be used.
|
|
|
|
### no-pic
|
|
|
|
Don't build with support for Position Independent Code.
|
|
|
|
### no-pinshared
|
|
|
|
Don't pin the shared libraries.
|
|
|
|
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 Stream Control Transmission Protocol (SCTP).
|
|
|
|
### no-shared
|
|
|
|
Do not create shared libraries, only static ones.
|
|
|
|
See [Notes on shared libraries](#notes-on-shared-libraries) below.
|
|
|
|
### no-sock
|
|
|
|
Don't build support for socket BIOs.
|
|
|
|
### no-srp
|
|
|
|
Don't build support for Secure Remote Password (SRP) protocol or
|
|
SRP based ciphersuites.
|
|
|
|
### no-srtp
|
|
|
|
Don't build Secure Real-Time Transport Protocol (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.
|
|
|
|
This 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 tests.
|
|
|
|
### no-threads
|
|
|
|
Don't 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 [Notes on multi-threading](#notes-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 (TS) Authority support.
|
|
|
|
### enable-ubsan
|
|
|
|
Build with the Undefined Behaviour sanitiser (UBSAN).
|
|
|
|
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-console
|
|
|
|
Don't build with the User Interface (UI) console method
|
|
|
|
The User Interface console method enables text based console prompts.
|
|
|
|
### enable-unit-test
|
|
|
|
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"
|
|
|
|
Enabling this includes for example the RC4 based ciphersuites.
|
|
|
|
### zlib
|
|
|
|
Build with support for zlib compression/decompression.
|
|
|
|
### zlib-dynamic
|
|
|
|
Like the zlib option, 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, use the 80386 instruction set only in assembly modules
|
|
|
|
The default x86 code is more efficient, but requires at least an 486 processor.
|
|
Note: This doesn't affect compiler generated code, so this option needs to be
|
|
accompanied by a corresponding compiler-specific option.
|
|
|
|
### no-{protocol}
|
|
|
|
no-{ssl|ssl3|tls|tls1|tls1_1|tls1_2|tls1_3|dtls|dtls1|dtls1_2}
|
|
|
|
Don't build support for negotiating the specified SSL/TLS protocol.
|
|
|
|
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-{protocol}-method
|
|
|
|
no-{ssl|ssl3|tls|tls1|tls1_1|tls1_2|tls1_3|dtls|dtls1|dtls1_2}-method
|
|
|
|
Analogous to `no-{protocol}` 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-{algorithm}
|
|
|
|
enable-{md2|rc5}
|
|
|
|
Build with support for the specified algorithm.
|
|
|
|
### no-{algorithm}
|
|
|
|
no-{aria|bf|blake2|camellia|cast|chacha|cmac|
|
|
des|dh|dsa|ecdh|ecdsa|idea|md4|mdc2|ocb|
|
|
poly1305|rc2|rc4|rmd160|scrypt|seed|
|
|
siphash|siv|sm2|sm3|sm4|whirlpool}
|
|
|
|
Build without support for the specified algorithm.
|
|
|
|
The `ripemd` algorithm is deprecated and if used is synonymous with `rmd160`.
|
|
|
|
### Compiler-specific options
|
|
|
|
-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 [Environment Variables](#environment-variables) documentation
|
|
below and how these flags interact with those variables.
|
|
|
|
-xxx, +xxx, /xxx
|
|
|
|
Additional options that are not otherwise recognised are 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 [Environment Variables](#environment-variables) documentation
|
|
below and how these flags interact with those variables.
|
|
|
|
### Environment Variables
|
|
|
|
VAR=value
|
|
|
|
Assign the given value to the environment variable `VAR` 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.
|
|
|
|
$ ./Configure -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 the following:
|
|
|
|
AR, CC, CXX, CROSS_COMPILE, HASHBANGPERL, PERL, RANLIB, RC, and WINDRES
|
|
|
|
For example, the following command will not see `-DBAR`:
|
|
|
|
$ CPPFLAGS=-DBAR ./Configure -DCOOKIE
|
|
|
|
However, the following will see both set variables:
|
|
|
|
$ CC=gcc CROSS_COMPILE=x86_64-w64-mingw32- ./Configure -DCOOKIE
|
|
|
|
If `CC` is set, it is advisable to also set `CXX` to ensure both the C and C++
|
|
compiler are in the same "family". This becomes relevant with
|
|
`enable-external-tests` and `enable-buildtest-c++`.
|
|
|
|
### Reconfigure
|
|
|
|
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`. 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.
|
|
|
|
Displaying configuration data
|
|
-----------------------------
|
|
|
|
The configuration script itself will say very little, and finishes by
|
|
creating `configdata.pm`. This perl module can be loaded by other scripts
|
|
to find all the configuration data, and it can also be used as a script to
|
|
display all sorts of configuration data in a human readable form.
|
|
|
|
For more information, please do:
|
|
|
|
$ ./configdata.pm --help # Unix
|
|
|
|
or
|
|
|
|
$ perl configdata.pm --help # Windows and VMS
|
|
|
|
Installation Steps in Detail
|
|
============================
|
|
|
|
Configure OpenSSL
|
|
-----------------
|
|
|
|
### Automatic Configuration
|
|
|
|
On some platform a `config` script is available which attempts to guess
|
|
your operating system (and compiler, if necessary) and calls the `Configure`
|
|
Perl script with appropriate target based on its guess. Further options can
|
|
be supplied to the `config` script, which will be passed on to the `Configure`
|
|
script.
|
|
|
|
#### Unix / Linux / macOS
|
|
|
|
$ ./Configure [[ options ]]
|
|
|
|
#### OpenVMS
|
|
|
|
$ perl Configure [[ options ]]
|
|
|
|
#### Windows
|
|
|
|
$ perl Configure [[ options ]]
|
|
|
|
### Manual Configuration
|
|
|
|
OpenSSL knows about a range of different operating system, hardware and
|
|
compiler combinations. To see the ones it knows about, run
|
|
|
|
$ ./Configure LIST # Unix
|
|
|
|
or
|
|
|
|
$ perl Configure LIST # 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
|
|
run:
|
|
|
|
$ ./Configure linux-elf [[ options ]]
|
|
|
|
### Creating your own Configuration
|
|
|
|
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.md](Configurations/README.md) and
|
|
[Configurations/README-design.md](Configurations/README-design.md)
|
|
for more information.
|
|
|
|
The generic configurations `cc` or `gcc` should usually work on 32 bit
|
|
Unix-like systems.
|
|
|
|
`Configure` creates a build file (`Makefile` on Unix, `makefile` on Windows
|
|
and `descrip.mms` on OpenVMS) from a suitable template in `Configurations/`,
|
|
and defines various macros in `include/openssl/configuration.h` (generated
|
|
from `include/openssl/configuration.h.in`.
|
|
|
|
### Out of Tree Builds
|
|
|
|
OpenSSL can be configured to build in a build directory separate from the
|
|
source code directory. It's done by placing yourself in some other
|
|
directory and invoking the configuration commands from there.
|
|
|
|
#### Unix example
|
|
|
|
$ mkdir /var/tmp/openssl-build
|
|
$ cd /var/tmp/openssl-build
|
|
$ /PATH/TO/OPENSSL/SOURCE/Configure [[ options ]]
|
|
|
|
#### OpenVMS example
|
|
|
|
$ set default sys$login:
|
|
$ create/dir [.tmp.openssl-build]
|
|
$ set default [.tmp.openssl-build]
|
|
$ perl D:[PATH.TO.OPENSSL.SOURCE]Configure [[ options ]]
|
|
|
|
#### Windows example
|
|
|
|
$ C:
|
|
$ mkdir \temp-openssl
|
|
$ cd \temp-openssl
|
|
$ perl d:\PATH\TO\OPENSSL\SOURCE\Configure [[ options ]]
|
|
|
|
Paths can be relative just as well as absolute. `Configure` will do its best
|
|
to translate them to relative paths whenever possible.
|
|
|
|
Build OpenSSL
|
|
-------------
|
|
|
|
Build OpenSSL by running:
|
|
|
|
$ make # Unix
|
|
$ mms ! (or mmk) OpenVMS
|
|
$ nmake # Windows
|
|
|
|
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, take a look at the [Build Failures](#build-failures)
|
|
subsection of the [Troubleshooting](#troubleshooting) section.
|
|
|
|
Test OpenSSL
|
|
------------
|
|
|
|
After a successful build, and before installing, the libraries should
|
|
be tested. Run:
|
|
|
|
$ make test # Unix
|
|
$ mms test ! OpenVMS
|
|
$ nmake test # Windows
|
|
|
|
**Warning:** you MUST run the tests from an unprivileged account (or disable
|
|
your privileges temporarily if your platform allows it).
|
|
|
|
See [test/README.md](test/README.md) for further details how run tests.
|
|
|
|
See [test/README-dev.md](test/README-dev.md) for guidelines on adding tests.
|
|
|
|
Install OpenSSL
|
|
---------------
|
|
|
|
If everything tests ok, install OpenSSL with
|
|
|
|
$ make install # Unix
|
|
$ mms install ! OpenVMS
|
|
$ nmake install # Windows
|
|
|
|
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 / Linux / macOS
|
|
|
|
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 Contains the OpenSSL command line man-pages.
|
|
share/man/man3 Contains the OpenSSL library calls man-pages.
|
|
share/man/man5 Contains the OpenSSL configuration format man-pages.
|
|
share/man/man7 Contains the OpenSSL other misc man-pages.
|
|
|
|
share/doc/openssl/html/man1
|
|
share/doc/openssl/html/man3
|
|
share/doc/openssl/html/man5
|
|
share/doc/openssl/html/man7
|
|
Contains the HTML rendition of the man-pages.
|
|
|
|
### OpenVMS
|
|
|
|
'arch' is replaced with the architecture name, `Alpha` or `ia64`,
|
|
'sover' is replaced with the shared library version (`0101` for 1.1), and
|
|
'pz' is replaced with the pointer size OpenSSL was built with:
|
|
|
|
[.EXE.'arch'] Contains the openssl binary.
|
|
[.EXE] Contains a few 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'sover''pz'.'arch']
|
|
Contains the OpenSSL dynamically loadable engines.
|
|
[.SYS$STARTUP] Contains startup, login and shutdown scripts.
|
|
These define appropriate logical names and
|
|
command symbols.
|
|
[.SYSTEST] Contains the installation verification procedure.
|
|
[.HTML] Contains the HTML rendition of the manual pages.
|
|
|
|
### Additional Directories
|
|
|
|
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.
|
|
|
|
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
|
|
|
|
$ make DESTDIR=/tmp/package-root install # Unix
|
|
$ mms/macro="DESTDIR=TMP:[PACKAGE-ROOT]" install ! OpenVMS
|
|
|
|
The specified destination directory will be prepended to all installation
|
|
target paths.
|
|
|
|
Compatibility issues with previous OpenSSL versions
|
|
---------------------------------------------------
|
|
|
|
### COMPILING existing applications
|
|
|
|
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 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.
|
|
|
|
Some APIs have changed as well. However, older APIs have been preserved when
|
|
possible.
|
|
|
|
Post-installation Notes
|
|
-----------------------
|
|
|
|
With the default OpenSSL installation comes a FIPS provider module, which
|
|
needs some post-installation attention, without which it will not be usable.
|
|
This involves using the following command:
|
|
|
|
$ openssl fipsinstall
|
|
|
|
See the openssl-fipsinstall(1) manual for details and examples.
|
|
|
|
Advanced Build Options
|
|
======================
|
|
|
|
Environment Variables
|
|
---------------------
|
|
|
|
A number of environment variables can be used to provide additional control
|
|
over the build process. Typically these should be defined prior to running
|
|
`Configure`. Not all environment variables are relevant to all platforms.
|
|
|
|
AR
|
|
The name of the ar executable to use.
|
|
|
|
BUILDFILE
|
|
Use a different build file name than the platform default
|
|
("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.md](Configurations/README.md)
|
|
for further information.
|
|
|
|
CC
|
|
The compiler to use. Configure will attempt to pick a default
|
|
compiler for your platform but this choice can be overridden
|
|
using this variable. Set it to the compiler executable you wish
|
|
to use, e.g. gcc or clang.
|
|
|
|
CROSS_COMPILE
|
|
This environment variable has the same meaning as for the
|
|
"--cross-compile-prefix" Configure flag described above. If both
|
|
are set then the Configure flag takes precedence.
|
|
|
|
NM
|
|
The name of the nm executable to use.
|
|
|
|
OPENSSL_LOCAL_CONFIG_DIR
|
|
OpenSSL comes with a database of information about how it
|
|
should be built on different platforms as well as build file
|
|
templates for those platforms. The database is comprised of
|
|
".conf" files in the Configurations directory. The build
|
|
file templates reside there as well as ".tmpl" files. See the
|
|
file [Configurations/README.md](Configurations/README.md)
|
|
for further information about the format of ".conf" files
|
|
as well as information on the ".tmpl" files.
|
|
In addition to the standard ".conf" and ".tmpl" files, it is
|
|
possible to create your own ".conf" and ".tmpl" files and
|
|
store them locally, outside the OpenSSL source tree.
|
|
This environment variable can be set to the directory where
|
|
these files are held and will be considered by Configure
|
|
before it looks in the standard directories.
|
|
|
|
PERL
|
|
The name of the Perl executable to use when building OpenSSL.
|
|
Only needed if builing should use a different Perl executable
|
|
than what is used to run the Configure script.
|
|
|
|
HASHBANGPERL
|
|
The command string for the Perl executable to insert in the
|
|
#! 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.
|
|
|
|
RC
|
|
The name of the rc executable to use. The default will be as
|
|
defined for the target platform in the ".conf" file. If not
|
|
defined then "windres" will be used. The WINDRES environment
|
|
variable is synonymous to this. If both are defined then RC
|
|
takes precedence.
|
|
|
|
RANLIB
|
|
The name of the ranlib executable to use.
|
|
|
|
WINDRES
|
|
See RC.
|
|
|
|
Makefile Targets
|
|
----------------
|
|
|
|
The `Configure` script generates a Makefile in a format relevant to the specific
|
|
platform. The Makefiles provide a number of targets that can be used. Not all
|
|
targets may be available on all platforms. Only the most common targets are
|
|
described here. Examine the Makefiles themselves for the full list.
|
|
|
|
all
|
|
The target to build all the software components and
|
|
documentation.
|
|
|
|
build_sw
|
|
Build all the software components.
|
|
THIS IS THE DEFAULT TARGET.
|
|
|
|
build_docs
|
|
Build all documentation components.
|
|
|
|
clean
|
|
Remove all build artefacts and return the directory to a "clean"
|
|
state.
|
|
|
|
depend
|
|
Rebuild the dependencies in the Makefiles. This is a legacy
|
|
option that no longer needs to be used since OpenSSL 1.1.0.
|
|
|
|
install
|
|
Install all OpenSSL components.
|
|
|
|
install_sw
|
|
Only install the OpenSSL software components.
|
|
|
|
install_docs
|
|
Only install the OpenSSL documentation components.
|
|
|
|
install_man_docs
|
|
Only install the OpenSSL man pages (Unix only).
|
|
|
|
install_html_docs
|
|
Only install the OpenSSL HTML documentation.
|
|
|
|
install_fips
|
|
Install the FIPS provider module configuration file.
|
|
|
|
list-tests
|
|
Prints a list of all the self test names.
|
|
|
|
test
|
|
Build and run the OpenSSL self tests.
|
|
|
|
uninstall
|
|
Uninstall all OpenSSL components.
|
|
|
|
reconfigure
|
|
reconf
|
|
Re-run the configuration process, as exactly as the last time
|
|
as possible.
|
|
|
|
update
|
|
This is a developer option. If you are developing a patch for
|
|
OpenSSL you may need to use this if you want to update
|
|
automatically generated files; add new error codes or add new
|
|
(or change the visibility of) public API functions. (Unix only).
|
|
|
|
Running Selected Tests
|
|
----------------------
|
|
|
|
You can specify a set of tests to be performed
|
|
using the `make` variable `TESTS`.
|
|
|
|
See the section [Running Selected Tests of
|
|
test/README.md](test/README.md#running-selected-tests).
|
|
|
|
Troubleshooting
|
|
===============
|
|
|
|
Configuration Problems
|
|
----------------------
|
|
|
|
### Selecting the correct target
|
|
|
|
The `./Configure` script tries hard to guess your operating system, but in some
|
|
cases it does not succeed. You will see a message like the following:
|
|
|
|
$ ./Configure
|
|
Operating system: x86-whatever-minix
|
|
This system (minix) is not supported. See file INSTALL.md for details.
|
|
|
|
Even if the automatic target selection by the `./Configure` script fails,
|
|
chances are that you still might find a suitable target in the `Configurations`
|
|
directory, which you can supply to the `./Configure` command,
|
|
possibly after some adjustment.
|
|
|
|
The `Configurations/` directory contains a lot of examples of such targets.
|
|
The main configuration file is [10-main.conf], which contains all targets that
|
|
are officially supported by the OpenSSL team. Other configuration files contain
|
|
targets contributed by other OpenSSL users. The list of targets can be found in
|
|
a Perl list `my %targets = ( ... )`.
|
|
|
|
my %targets = (
|
|
...
|
|
"target-name" => {
|
|
inherit_from => [ "base-target" ],
|
|
CC => "...",
|
|
cflags => add("..."),
|
|
asm_arch => '...',
|
|
perlasm_scheme => "...",
|
|
},
|
|
...
|
|
)
|
|
|
|
If you call `./Configure` without arguments, it will give you a list of all
|
|
known targets. Using `grep`, you can lookup the target definition in the
|
|
`Configurations/` directory. For example the `android-x86_64` can be found in
|
|
[Configurations/15-android.conf](Configurations/15-android.conf).
|
|
|
|
The directory contains two README files, which explain the general syntax and
|
|
design of the configuration files.
|
|
|
|
- [Configurations/README.md](Configurations/README.md)
|
|
- [Configurations/README-design.md](Configurations/README-design.md)
|
|
|
|
If you need further help, try to search the [openssl-users] mailing list
|
|
or the [GitHub Issues] for existing solutions. If you don't find anything,
|
|
you can [raise an issue] to ask a question yourself.
|
|
|
|
More about our support resources can be found in the [SUPPORT] file.
|
|
|
|
### Configuration Errors
|
|
|
|
If the `./Configure` or `./Configure` command fails with an error message,
|
|
read the error message carefully and try to figure out whether you made
|
|
a mistake (e.g., by providing a wrong option), or whether the script is
|
|
working incorrectly. If you think you encountered a bug, please
|
|
[raise an issue] on GitHub to file a bug report.
|
|
|
|
Along with a short description of the bug, please provide the complete
|
|
configure command line and the relevant output including the error message.
|
|
|
|
Note: To make the output readable, pleace add a 'code fence' (three backquotes
|
|
` ``` ` on a separate line) before and after your output:
|
|
|
|
```
|
|
./Configure [your arguments...]
|
|
|
|
[output...]
|
|
|
|
```
|
|
|
|
Build Failures
|
|
--------------
|
|
|
|
If the build fails, look carefully at the output. Try to locate and understand
|
|
the error message. It might be that the compiler is already telling you
|
|
exactly what you need to do to fix your problem.
|
|
|
|
There may be reasons for the failure that aren't problems in OpenSSL itself,
|
|
for example if the compiler reports missing standard or third party headers.
|
|
|
|
If the build succeeded previously, but fails after a source or configuration
|
|
change, it might be helpful to clean the build tree before attempting another
|
|
build. Use this command:
|
|
|
|
$ make clean # Unix
|
|
$ mms clean ! (or mmk) OpenVMS
|
|
$ nmake clean # Windows
|
|
|
|
Assembler error messages can sometimes be sidestepped by using the
|
|
`no-asm` configuration option.
|
|
|
|
Compiling parts of OpenSSL with gcc and others with the system compiler will
|
|
result in unresolved symbols on some systems.
|
|
|
|
If you are still having problems, try to search the [openssl-users] mailing
|
|
list or the [GitHub Issues] for existing solutions. If you think you
|
|
encountered an OpenSSL bug, please [raise an issue] to file a bug report.
|
|
Please take the time to review the existing issues first; maybe the bug was
|
|
already reported or has already been fixed.
|
|
|
|
Test Failures
|
|
-------------
|
|
|
|
If some tests fail, look at the output. There may be reasons for the failure
|
|
that isn't a problem in OpenSSL itself (like an OS malfunction or a Perl issue).
|
|
|
|
You may want increased verbosity, that can be accomplished as described in
|
|
section [Test Failures of test/README.md](test/README.md#test-failures).
|
|
|
|
You may also want to selectively specify which test(s) to perform. This can be
|
|
done using the `make` variable `TESTS` as described in section [Running
|
|
Selected Tests of test/README.md](test/README.md#running-selected-tests).
|
|
|
|
If you find a problem with OpenSSL itself, try removing any
|
|
compiler optimization flags from the `CFLAGS` line in the Makefile and
|
|
run `make clean; make` or corresponding.
|
|
|
|
To report a bug please open an issue on GitHub, at
|
|
<https://github.com/openssl/openssl/issues>.
|
|
|
|
Notes
|
|
=====
|
|
|
|
Notes 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.)
|
|
|
|
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 use `Configure` with the `no-threads` option.
|
|
|
|
Notes on shared libraries
|
|
-------------------------
|
|
|
|
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 will be created by default. This can be suppressed and
|
|
only static libraries created by using the `no-shared` option. On systems
|
|
where OpenSSL does not know how to build shared libraries the `no-shared`
|
|
option will be forced and only static libraries will be created.
|
|
|
|
Shared libraries are named a little differently on different platforms.
|
|
One way or another, they all have the major OpenSSL version number as
|
|
part of the file name, i.e. for OpenSSL 1.1.x, `1.1` is somehow part of
|
|
the name.
|
|
|
|
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`
|
|
with import libraries `libcrypto.dll.a` and `libssl.dll.a`.
|
|
|
|
On Windows build with MSVC or using MingW, shared libraries are named
|
|
`libcrypto-1_1.dll` and `libssl-1_1.dll` for 32-bit Windows,
|
|
`libcrypto-1_1-x64.dll` and `libssl-1_1-x64.dll` for 64-bit x86_64 Windows,
|
|
and `libcrypto-1_1-ia64.dll` and `libssl-1_1-ia64.dll` for IA64 Windows.
|
|
With MSVC, the import libraries are named `libcrypto.lib` and `libssl.lib`,
|
|
while with MingW, they are named `libcrypto.dll.a` and `libssl.dll.a`.
|
|
|
|
On VMS, shareable images (VMS speak for shared libraries) are named
|
|
`ossl$libcrypto0101_shr.exe` and `ossl$libssl0101_shr.exe`. However, when
|
|
OpenSSL is specifically built for 32-bit pointers, the shareable images
|
|
are named `ossl$libcrypto0101_shr32.exe` and `ossl$libssl0101_shr32.exe`
|
|
instead, and when built for 64-bit pointers, they are named
|
|
`ossl$libcrypto0101_shr64.exe` and `ossl$libssl0101_shr64.exe`.
|
|
|
|
Notes on random number generation
|
|
---------------------------------
|
|
|
|
Availability of cryptographically secure random numbers is required for
|
|
secret key generation. OpenSSL provides several options to seed the
|
|
internal CSPRNG. If not properly seeded, the internal CSPRNG will refuse
|
|
to deliver random bytes and a "PRNG not seeded error" will occur.
|
|
|
|
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 explicitly provide this option. Note also
|
|
that not all methods are available on all platforms. The FIPS provider will
|
|
silently ignore seed sources that were not validated.
|
|
|
|
I) On operating systems which provide a suitable randomness source (in
|
|
form of a system call or system device), OpenSSL will use the optimal
|
|
available method to seed the CSPRNG from the operating system's
|
|
randomness sources. This corresponds to the option `--with-rand-seed=os`.
|
|
|
|
II) On systems without such a suitable randomness source, automatic seeding
|
|
and reseeding is disabled (`--with-rand-seed=none`) and it may be necessary
|
|
to install additional support software to obtain a random seed and reseed
|
|
the CSPRNG manually. Please check out the manual pages for `RAND_add()`,
|
|
`RAND_bytes()`, `RAND_egd()`, and the FAQ for more information.
|
|
|
|
<!-- Links -->
|
|
|
|
[openssl-users]:
|
|
<https://mta.openssl.org/mailman/listinfo/openssl-users>
|
|
|
|
[SUPPORT]:
|
|
./SUPPORT.md
|
|
|
|
[GitHub Issues]:
|
|
<https://github.com/openssl/openssl/issues>
|
|
|
|
[raise an issue]:
|
|
<https://github.com/openssl/openssl/issues/new/choose>
|
|
|
|
[10-main.conf]:
|
|
Configurations/10-main.conf
|