Difference between revisions of "Compilation and Installation"
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=== Windows === | === Windows === | ||
+ | 3noch wrote a VERY good guide [http://developer.covenanteyes.com/building-openssl-for-visual-studio/ here]. | ||
==== W32 / Windows NT - Windows 9x ==== | ==== W32 / Windows NT - Windows 9x ==== |
Revision as of 04:43, 6 June 2014
Retrieve source code
The OpenSSL source code can be downloaded from www.openssl.org/source/ or any suitable ftp mirror. There are various versions including stable as well as unstable versions.
The source code is manged via Git, the repository is
The source is also available via a GitHub mirror. This repository is updated every 15 minutes.
Configuration
OpenSSL is configured for a particular platform with protocol and behavior options using Configure and config.
Configure & Config
You use Configure and config to tune the compile and installation process through options and switches. The difference between is Configure properly handles the host-arch-compiler triplet, and config does not. config attempts to guess the triplet, so its a lot like autotool's config.guess.
You can usually use config and it will do the right thing (from Ubuntu 13.04, x64):
$ ./config Operating system: x86_64-whatever-linux2 Configuring for linux-x86_64 Configuring for linux-x86_64 no-ec_nistp_64_gcc_128 [default] OPENSSL_NO_EC_NISTP_64_GCC_128 (skip dir) no-gmp [default] OPENSSL_NO_GMP (skip dir) no-jpake [experimental] OPENSSL_NO_JPAKE (skip dir) no-krb5 [krb5-flavor not specified] OPENSSL_NO_KRB5 no-md2 [default] OPENSSL_NO_MD2 (skip dir) no-rc5 [default] OPENSSL_NO_RC5 (skip dir) no-rfc3779 [default] OPENSSL_NO_RFC3779 (skip dir) no-sctp [default] OPENSSL_NO_SCTP (skip dir) no-shared [default] no-store [experimental] OPENSSL_NO_STORE (skip dir) no-zlib [default] no-zlib-dynamic [default] ...
Mac OSX is a problem (its often a neglected platform), and you will have to use Configure:
./Configure darwin64-x86_64-cc Configuring for darwin64-x86_64-cc no-ec_nistp_64_gcc_128 [default] OPENSSL_NO_EC_NISTP_64_GCC_128 (skip dir) no-gmp [default] OPENSSL_NO_GMP (skip dir) no-jpake [experimental] OPENSSL_NO_JPAKE (skip dir) no-krb5 [krb5-flavor not specified] OPENSSL_NO_KRB5 no-md2 [default] OPENSSL_NO_MD2 (skip dir) no-rc5 [default] OPENSSL_NO_RC5 (skip dir) no-rfc3779 [default] OPENSSL_NO_RFC3779 (skip dir) no-sctp [default] OPENSSL_NO_SCTP (skip dir) no-shared [default] no-store [experimental] OPENSSL_NO_STORE (skip dir) no-zlib [default] no-zlib-dynamic [default] ...
Running the same command with config results in:
$ ./config darwin64-x86_64-cc Operating system: i686-apple-darwinDarwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 WARNING! If you wish to build 64-bit library, then you have to invoke './Configure darwin64-x86_64-cc' *manually*. You have about 5 seconds to press Ctrl-C to abort. Configuring for darwin-i386-cc target already defined - darwin-i386-cc (offending arg: darwin64-x86_64-cc)
You can also configure on Darwin by exporting KERNEL_BITS:
$ export KERNEL_BITS=64 $ ./config shared no-ssl2 enable-ec_nistp_64_gcc_128 --openssldir=/usr/local/ssl/macosx-x64/ Operating system: i686-apple-darwinDarwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 Configuring for darwin64-x86_64-cc Configuring for darwin64-x86_64-cc no-gmp [default] OPENSSL_NO_GMP (skip dir) no-jpake [experimental] OPENSSL_NO_JPAKE (skip dir) no-krb5 [krb5-flavor not specified] OPENSSL_NO_KRB5 no-md2 [default] OPENSSL_NO_MD2 (skip dir) no-psk [option] OPENSSL_NO_PSK (skip dir) no-rc5 [default] OPENSSL_NO_RC5 (skip dir) no-rfc3779 [default] OPENSSL_NO_RFC3779 (skip dir) no-sctp [default] OPENSSL_NO_SCTP (skip dir) no-srp [option] OPENSSL_NO_SRP (skip dir) no-ssl2 [option] OPENSSL_NO_SSL2 (skip dir) no-store [experimental] OPENSSL_NO_STORE (skip dir) no-zlib [default] no-zlib-dynamic [default] ...
If you provide a option not known to configure or ask for help, then you get a brief help message:
$ ./Configure --help Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-krb5] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--test-sanity] os/compiler[:flags]
And if you supply an unknown triplet:
$ ./Configure darwin64-x86_64-clang Configuring for darwin64-x86_64-clang Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-krb5] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--test-sanity] os/compiler[:flags] pick os/compiler from: BC-32 BS2000-OSD BSD-generic32 BSD-generic64 BSD-ia64 BSD-sparc64 BSD-sparcv8 BSD-x86 BSD-x86-elf BSD-x86_64 Cygwin Cygwin-pre1.3 DJGPP MPE/iX-gcc OS2-EMX OS390-Unix QNX6 QNX6-i386 ReliantUNIX SINIX SINIX-N UWIN VC-CE VC-WIN32 VC-WIN64A VC-WIN64I aix-cc aix-gcc aix3-cc aix64-cc aix64-gcc android android-armv7 android-x86 aux3-gcc beos-x86-bone beos-x86-r5 bsdi-elf-gcc cc cray-j90 cray-t3e darwin-i386-cc darwin-ppc-cc darwin64-ppc-cc darwin64-x86_64-cc dgux-R3-gcc dgux-R4-gcc dgux-R4-x86-gcc dist gcc hpux-cc hpux-gcc hpux-ia64-cc hpux-ia64-gcc hpux-parisc-cc hpux-parisc-cc-o4 hpux-parisc-gcc hpux-parisc1_1-cc hpux-parisc1_1-gcc hpux-parisc2-cc hpux-parisc2-gcc hpux64-ia64-cc hpux64-ia64-gcc hpux64-parisc2-cc hpux64-parisc2-gcc hurd-x86 iphoneos-cross irix-cc irix-gcc irix-mips3-cc irix-mips3-gcc irix64-mips4-cc irix64-mips4-gcc linux-alpha+bwx-ccc linux-alpha+bwx-gcc linux-alpha-ccc linux-alpha-gcc linux-aout linux-armv4 linux-elf linux-generic32 linux-generic64 linux-ia32-icc linux-ia64 linux-ia64-ecc linux-ia64-icc linux-ppc linux-ppc64 linux-sparcv8 linux-sparcv9 linux-x86_64 linux32-s390x linux64-s390x linux64-sparcv9 mingw mingw64 ncr-scde netware-clib netware-clib-bsdsock netware-clib-bsdsock-gcc ... NOTE: If in doubt, on Unix-ish systems use './config'.
Finally, to delete a configuration and start anew, run make dclean.
Configure Options
OpenSSL has been around a long time, and it carries around a lot of cruft. For example, from above, SSLv2 is enabled by default. SSLv2 is completely broken, and you should disable it during configuration. You can disable protocols and provide other options through Configure and config, and the following lists some of them.
Note: if you specify a non-existent option, then the configure scripts will proceed without warning. For example, if you inadvertently specify no-sslv2 rather than no-ssl2, the script will configure with SSLv2 and without warning for the unknown no-sslv2.
Option | Description |
---|---|
--openssldir=XXX | The installation directory. If not specified, the library will be installed at /usr/local/ssl. Header will be located at /usr/local/ssl/include/openssl, and libraries located at /usr/local/ssl/lib. |
shared | Build a shared object in addition to the static archive |
enable-ec_nistp_64_gcc_128 | Use on x64 platforms when GCC supports __uint128_t. ECDH is about 2 to 4 times faster. Not enabled by default because Configure can't determine it. |
no-ssl2 | Disables SSLv2 |
no-ssl3 | Disables SSLv3 |
no-comp | Disables compression independent of zlib |
no-idea | Disables IDEA algorithm. Unlike RC5 and MDC2, IDEA is enabled by default |
no-asm | Disables assembly language routines (and uses C routines) |
no-dtls | Disables DTLS (useful on mobile devices since carriers often block UDP) |
no-shared | Disables shared objects (only a static library is created) |
no-hw | Disables hardware support (useful on mobile devices) |
no-engines | Disables hardware support (useful on mobile devices) |
no-threads | Disables threading support |
no-dso | Disables the OpenSSL DSO API (the library offers a shared object abstraction layer) |
no-err | Removes all error function names and error reason text to reduce footprint |
no-npn | Disables Next Protocol Negotiation (NPN) |
no-psk | Disables Preshared Key (PSK). PSK provides mutual authentication independent of trusted authorities, but its rarely offered or used |
no-srp | Disables Secure Remote Password (SRP). SRP provides mutual authentication independent of trusted authorities, but its rarely offered or used |
no-ec2m | Used when configuring FIPS Capable Library with a FIPS Object Module that only includes prime curves. That is, use this switch if you use openssl-fips-ecp-2.0.5. |
-DXXX | Defines XXX. For example, -DOPENSSL_NO_HEARTBEATS. |
After disabling an option, your configure output will look similar to below (notice the lack of SSLv2 and SSLv3 support).
$ ./Configure darwin64-x86_64-cc no-ssl2 no-ssl3 Configuring for darwin64-x86_64-cc no-ec_nistp_64_gcc_128 [default] OPENSSL_NO_EC_NISTP_64_GCC_128 (skip dir) no-gmp [default] OPENSSL_NO_GMP (skip dir) no-jpake [experimental] OPENSSL_NO_JPAKE (skip dir) no-krb5 [krb5-flavor not specified] OPENSSL_NO_KRB5 no-md2 [default] OPENSSL_NO_MD2 (skip dir) no-rc5 [default] OPENSSL_NO_RC5 (skip dir) no-rfc3779 [default] OPENSSL_NO_RFC3779 (skip dir) no-sctp [default] OPENSSL_NO_SCTP (skip dir) no-shared [default] no-ssl2 [option] OPENSSL_NO_SSL2 (skip dir) no-ssl3 [option] OPENSSL_NO_SSL3 (skip dir) no-store [experimental] OPENSSL_NO_STORE (skip dir) no-zlib [default] no-zlib-dynamic [default] ...
Compile Time Checking
If you disable an option during configure, you can check if it's available through OPENSSL_NO_* defines. OpenSSL writes the configure options to <openssl/opensslconf.h>. For example, if you want to know if SSLv3 is available, then you would perform the following in your code:
#include <openssl/opensslconf.h> ... #if !defined(OPENSSL_NO_SSL3) /* SSLv3 is available */ #endif
Modifying Build Settings
Sometimes you need to work around OpenSSL's selections for building the library. For example, you might want to use -Os for a mobile device (rather than -O3), or you might want to use the clang compiler (rather than gcc).
In case like these, its often easier to modify Configure and Makefile.org rather than trying to add targets to the configure scripts. Below is a patch that modifies Configure and Makefile.org for use under the iOS 7.0 SDK (which lacks gcc in /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/):
- Modifies Configure to use clang
- Modifies Makefile.org to use clang
- Modifies CFLAG to use -Os
- Modifies MAKEDEPPROG to use $(CC) -M
Setting and resetting of LANG is required on Mac OSX to work around a sed bug or limitation.
OLD_LANG=$LANG unset LANG sed -i "" 's|\"iphoneos-cross\"\,\"llvm-gcc\:-O3|\"iphoneos-cross\"\,\"clang\:-Os|g' Configure sed -i "" 's/CC= cc/CC= clang/g' Makefile.org sed -i "" 's/CFLAG= -O/CFLAG= -Os/g' Makefile.org sed -i "" 's/MAKEDEPPROG=makedepend/MAKEDEPPROG=$(CC) -M/g' Makefile.org export LANG=$OLD_LANG
After modification, be sure to dclean and configure again so the new settings are picked up:
make dclean ./config make depend make all ...
Fedora and Red Hat
On Fedora and Red Hat systems, be sure to export CFLAGS="-fPIC" and explicitly specify shared to config. Failing to do so will result in static libraries only.That is, you will be missing the shared objects and engines. The commands would look similar to below.
$ export CFLAGS="-fPIC" $ ./config shared no-ssl2 no-ssl3 --openssldir=/usr/local/ssl ... $ make depend ... $ make all ... $ sudo -E make install
FIPS Capable Library
If you want to use FIPS validated cryptography, you download, build and install the FIPS Object Module (openssl-fips-2.0.5.tar.gz) according to the FIPS User Guide 2.0 and FIPS 140-2 Security Policy. You then download, build and install the FIPS Capable Library (openssl-1.0.1e.tar.gz).
When configuring the FIPS Capable Library, you must use fips as an option:
./config fips <other options ...>
If you are configuring the FIPS Capable Library with only prime curves (openssl-fips-ecp-2.0.5.tar.gz), then you must configure with no-ec2m:
./config fips no-ec2m <other options ...>
Compilation
Once you untar the source files (or fetched them from source control), its a good idea to look at README provided in it.
cat README
where you will understand that you have to read another file INSTALL :
cat INSTALL
Depending on your platform you will have to pick up the right INSTALL by example INSTALL.W64. Default is for Unix based systems.
Quick
./config <options ...> make depend make make test make install
Various options can be found examining the Configure file (there is a well commented block at its top). OpenSSL ships with SSLv2, SSLv3 and Compression enabled by default (see my $disabled), so you might want to use no-ssl2, no-ssl3, and no-comp.
Platfom specific
Linux
Intel
ARM
Windows
3noch wrote a VERY good guide here.
W32 / Windows NT - Windows 9x
type INSTALL.W32
- you need Perl for Win32. Unless you will build on Cygwin, you will need ActiveState Perl, available from http://www.activestate.com/ActivePerl.
- one of the following C compilers:
- Visual C++
- Borland C
- GNU C (Cygwin or MinGW)
- Netwide Assembler, a.k.a. NASM, available from http://nasm.sourceforge.net/ is required if you intend to utilize assembler modules. Note that NASM is now the only supported assembler.
W64
type INSTALL.W64
basically some specific 64bits information, default Windows build information is still in INSTALL.W32
Windows CE
Mac
iOS
Android
Visit Android and FIPS Library and Android.
More
VAX/VMS
I you wonder what are files ending with .com like test/testca.com those are VAX/VMX scripts. This code is still maintained.
OS/2
NetWare
5.x 6.x