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INSTALL.WIN
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INSTALL.WIN
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INSTALLATION ON WINDOWS PLATFORMS
---------------------------------
[Instructions for building for Windows CE can be found in INSTALL.WCE]
Here are a few comments about building OpenSSL for Windows environments.
- you need Perl. Unless you will build on Cygwin, you will need
ActiveState Perl, available from http://www.activestate.com/ActivePerl.
You also need the perl module Text::Template, available on CPAN.
Please read README.PERL for more information.
- one of the following C compilers:
* Visual C++
* GNU C (Cygwin or MinGW)
- Netwide Assembler, a.k.a. NASM, available from http://www.nasm.us,
is required if you intend to utilize assembler modules. Note that NASM
is now the only supported assembler. Without this the "Configure" step below
must be done with the "no-asm" option. The Microsoft provided assembler is NOT
supported.
Visual C++
----------
If you want to compile in the assembly language routines with Visual
C++, then you will need the Netwide Assembler binary, nasmw.exe or nasm.exe, to
be available on your %PATH%.
Firstly you should run Configure and generate the Makefiles. If you don't want
the assembly language files then add the "no-asm" option (without quotes) to
the Configure lines below.
For Win32:
> perl Configure VC-WIN32 --prefix=c:\some\openssl\dir
> ms\do_nasm
Note: replace the last line above with the following if not using the assembly
language files:
> ms\do_ms
For Win64/x64:
> perl Configure VC-WIN64A --prefix=c:\some\openssl\dir
> ms\do_win64a
For Win64/IA64:
> perl Configure VC-WIN64I --prefix=c:\some\openssl\dir
> ms\do_win64i
Where the prefix argument specifies where OpenSSL will be installed to.
Then from the VC++ environment at a prompt do the following. Note, your %PATH%
and other environment variables should be set up for 32-bit or 64-bit
development as appropriate.
> nmake -f ms\ntdll.mak
If all is well it should compile and you will have some DLLs and
executables in out32dll. If you want to try the tests then do:
> nmake -f ms\ntdll.mak test
To install OpenSSL to the specified location do:
> nmake -f ms\ntdll.mak install
Tweaks:
There are various changes you can make to the Windows compile
environment. By default the library is not compiled with debugging
symbols. If you add --debug to the Configure lines above then debugging symbols
will be compiled in.
By default in 1.1.0 OpenSSL will compile builtin ENGINES into separate shared
libraries. If you specify the "enable-static-engine" option on the command line
to Configure the shared library build (ms\ntdll.mak) will compile the engines
into libeay32.dll instead.
You can also build a static version of the library using the Makefile
ms\nt.mak
GNU C (Cygwin)
--------------
Cygwin implements a Posix/Unix runtime system (cygwin1.dll) on top of the
Windows subsystem and provides a bash shell and GNU tools environment.
Consequently, a make of OpenSSL with Cygwin is virtually identical to the
Unix procedure. It is also possible to create Windows binaries that only
use the Microsoft C runtime system (msvcrt.dll or crtdll.dll) using
MinGW. MinGW can be used in the Cygwin development environment or in a
standalone setup as described in the following section.
To build OpenSSL using Cygwin:
* Install Cygwin (see http://cygwin.com/)
* Install Perl and ensure it is in the path. Both Cygwin perl
(5.6.1-2 or newer) and ActivePerl work.
* Run the Cygwin bash shell
* $ tar zxvf openssl-x.x.x.tar.gz
$ cd openssl-x.x.x
To build the Cygwin version of OpenSSL:
$ ./config
[...]
$ make
[...]
$ make test
$ make install
This will create a default install in /usr/local/ssl.
To build the MinGW version (native Windows) in Cygwin:
$ ./Configure mingw
[...]
$ make
[...]
$ make test
$ make install
Cygwin Notes:
"make test" and normal file operations may fail in directories
mounted as text (i.e. mount -t c:\somewhere /home) due to Cygwin
stripping of carriage returns. To avoid this ensure that a binary
mount is used, e.g. mount -b c:\somewhere /home.
GNU C (MinGW/MSYS)
-------------
* Compiler and shell environment installation:
MinGW and MSYS are available from http://www.mingw.org/, both are
required. Run the installers and do whatever magic they say it takes
to start MSYS bash shell with GNU tools on its PATH.
* Compile OpenSSL:
$ ./config
[...]
$ make
[...]
$ make test
This will create the library and binaries in root source directory
and openssl.exe application in apps directory.
It is also possible to cross-compile it on Linux by configuring
with './Configure --cross-compile-prefix=i386-mingw32- mingw ...'. Other
possible targets include x86_64-w64-mingw32- and i686-w64-mingw32-.
libcrypto.a and libssl.a are the static libraries. To use the DLLs,
link with libeay32.a and libssl32.a instead.
Linking your application
------------------------
If you link with static OpenSSL libraries [those built with ms/nt.mak],
then you're expected to additionally link your application with
WS2_32.LIB, ADVAPI32.LIB, GDI32.LIB and USER32.LIB. Those developing
non-interactive service applications might feel concerned about linking
with the latter two, as they are justly associated with interactive
desktop, which is not available to service processes. The toolkit is
designed to detect in which context it's currently executed, GUI,
console app or service, and act accordingly, namely whether or not to
actually make GUI calls. Additionally those who wish to
/DELAYLOAD:GDI32.DLL and /DELAYLOAD:USER32.DLL and actually keep them
off service process should consider implementing and exporting from
.exe image in question own _OPENSSL_isservice not relying on USER32.DLL.
E.g., on Windows Vista and later you could:
__declspec(dllexport) __cdecl BOOL _OPENSSL_isservice(void)
{ DWORD sess;
if (ProcessIdToSessionId(GetCurrentProcessId(),&sess))
return sess==0;
return FALSE;
}
If you link with OpenSSL .DLLs, then you're expected to include into
your application code small "shim" snippet, which provides glue between
OpenSSL BIO layer and your compiler run-time. See the OPENSSL_Applink
manual page for further details.