2 INSTALLATION ON THE WIN32 PLATFORM
3 ----------------------------------
5 [Instructions for building for Windows CE can be found in INSTALL.WCE]
7 Heres a few comments about building OpenSSL in Windows environments. Most
8 of this is tested on Win32 but it may also work in Win 3.1 with some
11 You need Perl for Win32. Unless you will build on Cygwin, you will need
12 ActiveState Perl, available from http://www.activestate.com/ActivePerl.
14 and one of the following C compilers:
18 * GNU C (Cygwin or MinGW)
20 If you are compiling from a tarball or a CVS snapshot then the Win32 files
21 may well be not up to date. This may mean that some "tweaking" is required to
22 get it all to work. See the trouble shooting section later on for if (when?)
28 If you want to compile in the assembly language routines with Visual C++ then
29 you will need an assembler. This is worth doing because it will result in
30 faster code: for example it will typically result in a 2 times speedup in the
31 RSA routines. Currently the following assemblers are supported:
33 * Microsoft MASM (aka "ml")
34 * Free Netwide Assembler NASM.
36 MASM is distributed with most versions of VC++. For the versions where it is
37 not included in VC++, it is also distributed with some Microsoft DDKs, for
38 example the Windows NT 4.0 DDK and the Windows 98 DDK. If you do not have
39 either of these DDKs then you can just download the binaries for the Windows
40 98 DDK and extract and rename the two files XXXXXml.exe and XXXXXml.err, to
41 ml.exe and ml.err and install somewhere on your PATH. Both DDKs can be
42 downloaded from the Microsoft developers site www.msdn.com.
44 NASM is freely available. Version 0.98 was used during testing: other versions
45 may also work. It is available from many places, see for example:
46 http://www.kernel.org/pub/software/devel/nasm/binaries/win32/
47 The NASM binary nasmw.exe needs to be installed anywhere on your PATH.
49 Firstly you should run Configure:
51 > perl Configure VC-WIN32
53 Next you need to build the Makefiles and optionally the assembly language
56 - If you are using MASM then run:
60 - If you are using NASM then run:
64 - If you don't want to use the assembly language files at all then run:
68 If you get errors about things not having numbers assigned then check the
69 troubleshooting section: you probably won't be able to compile it as it
72 Then from the VC++ environment at a prompt do:
74 > nmake -f ms\ntdll.mak
76 If all is well it should compile and you will have some DLLs and executables
77 in out32dll. If you want to try the tests then do:
84 There are various changes you can make to the Win32 compile environment. By
85 default the library is not compiled with debugging symbols. If you add 'debug'
86 to the mk1mf.pl lines in the do_* batch file then debugging symbols will be
87 compiled in. Note that mk1mf.pl expects the platform to be the last argument
88 on the command line, so 'debug' must appear before that, as all other options.
90 The default Win32 environment is to leave out any Windows NT specific
93 If you want to enable the NT specific features of OpenSSL (currently only the
94 logging BIO) follow the instructions above but call the batch file do_nt.bat
97 You can also build a static version of the library using the Makefile
100 Borland C++ builder 5
101 ---------------------
103 * Configure for building with Borland Builder:
104 > perl Configure BC-32
106 * Create the appropriate makefile
112 Borland C++ builder 3 and 4
113 ---------------------------
115 * Setup PATH. First must be GNU make then bcb4/bin
125 Cygwin provides a bash shell and GNU tools environment running
126 on NT 4.0, Windows 9x, Windows ME, Windows 2000, and Windows XP.
127 Consequently, a make of OpenSSL with Cygwin is closer to a GNU
128 bash environment such as Linux than to other the other Win32
131 Cygwin implements a Posix/Unix runtime system (cygwin1.dll).
132 It is also possible to create Win32 binaries that only use the
133 Microsoft C runtime system (msvcrt.dll or crtdll.dll) using
134 MinGW. MinGW can be used in the Cygwin development environment
135 or in a standalone setup as described in the following section.
137 To build OpenSSL using Cygwin:
139 * Install Cygwin (see http://cygwin.com/)
141 * Install Perl and ensure it is in the path. Both Cygwin perl
142 (5.6.1-2 or newer) and ActivePerl work.
144 * Run the Cygwin bash shell
146 * $ tar zxvf openssl-x.x.x.tar.gz
149 To build the Cygwin version of OpenSSL:
158 This will create a default install in /usr/local/ssl.
160 To build the MinGW version (native Windows) in Cygwin:
171 "make test" and normal file operations may fail in directories
172 mounted as text (i.e. mount -t c:\somewhere /home) due to Cygwin
173 stripping of carriage returns. To avoid this ensure that a binary
174 mount is used, e.g. mount -b c:\somewhere /home.
176 "bc" is not provided in older Cygwin distribution. This causes a
177 non-fatal error in "make test" but is otherwise harmless. If
178 desired and needed, GNU bc can be built with Cygwin without change.
183 * Compiler installation:
185 MinGW is available from http://www.mingw.org. Run the installer and
186 set the MinGW bin directory to the PATH in "System Properties" or
193 This will create the library and binaries in out. In case any problems
198 libcrypto.a and libssl.a are the static libraries. To use the DLLs,
199 link with libeay32.a and libssl32.a instead.
201 See troubleshooting if you get error messages about functions not having
204 * You can now try the tests:
213 If you used the Cygwin procedure above, you have already installed and
214 can skip this section. For all other procedures, there's currently no real
215 installation procedure for Win32. There are, however, some suggestions:
217 - do nothing. The include files are found in the inc32/ subdirectory,
218 all binaries are found in out32dll/ or out32/ depending if you built
219 dynamic or static libraries.
221 - do as is written in INSTALL.Win32 that comes with modssl:
226 $ md c:\openssl\include
227 $ md c:\openssl\include\openssl
228 $ copy /b inc32\openssl\* c:\openssl\include\openssl
229 $ copy /b out32dll\ssleay32.lib c:\openssl\lib
230 $ copy /b out32dll\libeay32.lib c:\openssl\lib
231 $ copy /b out32dll\ssleay32.dll c:\openssl\bin
232 $ copy /b out32dll\libeay32.dll c:\openssl\bin
233 $ copy /b out32dll\openssl.exe c:\openssl\bin
235 Of course, you can choose another device than c:. C: is used here
236 because that's usually the first (and often only) harddisk device.
237 Note: in the modssl INSTALL.Win32, p: is used rather than c:.
243 Since the Win32 build is only occasionally tested it may not always compile
244 cleanly. If you get an error about functions not having numbers assigned
245 when you run ms\do_ms then this means the Win32 ordinal files are not up to
248 > perl util\mkdef.pl crypto ssl update
250 then ms\do_XXX should not give a warning any more. However the numbers that
251 get assigned by this technique may not match those that eventually get
252 assigned in the CVS tree: so anything linked against this version of the
253 library may need to be recompiled.
255 If you get errors about unresolved symbols there are several possible
258 If this happens when the DLL is being linked and you have disabled some
259 ciphers then it is possible the DEF file generator hasn't removed all
260 the disabled symbols: the easiest solution is to edit the DEF files manually
261 to delete them. The DEF files are ms\libeay32.def ms\ssleay32.def.
263 Another cause is if you missed or ignored the errors about missing numbers
266 If you get warnings in the code then the compilation will halt.
268 The default Makefile for Win32 halts whenever any warnings occur. Since VC++
269 has its own ideas about warnings which don't always match up to other
270 environments this can happen. The best fix is to edit the file with the
271 warning in and fix it. Alternatively you can turn off the halt on warnings by
272 editing the CFLAG line in the Makefile and deleting the /WX option.
274 You might get compilation errors. Again you will have to fix these or report
277 One final comment about compiling applications linked to the OpenSSL library.
278 If you don't use the multithreaded DLL runtime library (/MD option) your
279 program will almost certainly crash because malloc gets confused -- the
280 OpenSSL DLLs are statically linked to one version, the application must
281 not use a different one. You might be able to work around such problems
282 by adding CRYPTO_malloc_init() to your program before any calls to the
283 OpenSSL libraries: This tells the OpenSSL libraries to use the same
284 malloc(), free() and realloc() as the application. However there are many
285 standard library functions used by OpenSSL that call malloc() internally
286 (e.g. fopen()), and OpenSSL cannot change these; so in general you cannot
287 rely on CRYPTO_malloc_init() solving your problem, and you should
288 consistently use the multithreaded library.