2 INSTALLATION ON THE WIN32 PLATFORM
3 ----------------------------------
5 [Instructions for building for Windows CE can be found in INSTALL.WCE]
6 [Instructions for building for Win64 can be found in INSTALL.W64]
8 Here are a few comments about building OpenSSL for Win32 environments,
9 such as Windows NT and Windows 9x. It should be noted though that
10 Windows 9x are not ordinarily tested. Its mention merely means that we
11 attempt to maintain certain programming discipline and pay attention
12 to backward compatibility issues, in other words it's kind of expected
13 to work on Windows 9x, but no regression tests are actually performed.
15 On additional note newer OpenSSL versions are compiled and linked with
16 Winsock 2. This means that minimum OS requirement was elevated to NT 4
17 and Windows 98 [there is Winsock 2 update for Windows 95 though].
19 - you need Perl for Win32. Unless you will build on Cygwin, you will need
20 ActiveState Perl, available from http://www.activestate.com/ActivePerl.
22 - one of the following C compilers:
26 * GNU C (Cygwin or MinGW)
28 - even though optional for non-gcc builds, Netwide Assembler, a.k.a.
29 NASM, available from http://sourceforge.net/projects/nasm is
32 If you are compiling from a tarball or a CVS snapshot then the Win32 files
33 may well be not up to date. This may mean that some "tweaking" is required to
34 get it all to work. See the trouble shooting section later on for if (when?)
40 If you want to compile in the assembly language routines with Visual
41 C++, then you will need already mentioned Netwide Assembler binary,
42 nasmw.exe, to be available on your %PATH%.
44 Firstly you should run Configure:
46 > perl Configure VC-WIN32 --prefix=c:/some/openssl/dir
48 Where the prefix argument specifies where OpenSSL will be installed to.
50 Next you need to build the Makefiles and optionally the assembly
53 - If you are using NASM then run:
57 - If you don't want to use the assembly language files at all then run:
61 If you get errors about things not having numbers assigned then check the
62 troubleshooting section: you probably won't be able to compile it as it
65 Then from the VC++ environment at a prompt do:
67 > nmake -f ms\ntdll.mak
69 If all is well it should compile and you will have some DLLs and
70 executables in out32dll. If you want to try the tests then do:
72 > nmake -f ms\ntdll.mak test
75 To install OpenSSL to the specified location do:
77 > nmake -f ms\ntdll.mak install
81 There are various changes you can make to the Win32 compile
82 environment. By default the library is not compiled with debugging
83 symbols. If you add 'debug' to the mk1mf.pl lines in the do_* batch
84 file then debugging symbols will be compiled in. Note that mk1mf.pl
85 expects the platform to be the last argument on the command line, so
86 'debug' must appear before that, as all other options.
89 By default in 0.9.8 OpenSSL will compile builtin ENGINES into the
90 libeay32.dll shared library. If you specify the "no-static-engine"
91 option on the command line to Configure the shared library build
92 (ms\ntdll.mak) will compile the engines as separate DLLs.
94 The default Win32 environment is to leave out any Windows NT specific
97 If you want to enable the NT specific features of OpenSSL (currently
98 only the logging BIO) follow the instructions above but call the batch
99 file do_nt.bat instead of do_ms.bat.
101 You can also build a static version of the library using the Makefile
106 Borland C++ builder 5
107 ---------------------
109 * Configure for building with Borland Builder:
110 > perl Configure BC-32
112 * Create the appropriate makefile
118 Borland C++ builder 3 and 4
119 ---------------------------
121 * Setup PATH. First must be GNU make then bcb4/bin
131 Cygwin implements a Posix/Unix runtime system (cygwin1.dll) on top of
132 Win32 subsystem and provides a bash shell and GNU tools environment.
133 Consequently, a make of OpenSSL with Cygwin is virtually identical to
134 Unix procedure. It is also possible to create Win32 binaries that only
135 use the Microsoft C runtime system (msvcrt.dll or crtdll.dll) using
136 MinGW. MinGW can be used in the Cygwin development environment or in a
137 standalone setup as described in the following section.
139 To build OpenSSL using Cygwin:
141 * Install Cygwin (see http://cygwin.com/)
143 * Install Perl and ensure it is in the path. Both Cygwin perl
144 (5.6.1-2 or newer) and ActivePerl work.
146 * Run the Cygwin bash shell
148 * $ tar zxvf openssl-x.x.x.tar.gz
151 To build the Cygwin version of OpenSSL:
160 This will create a default install in /usr/local/ssl.
162 To build the MinGW version (native Windows) in Cygwin:
173 "make test" and normal file operations may fail in directories
174 mounted as text (i.e. mount -t c:\somewhere /home) due to Cygwin
175 stripping of carriage returns. To avoid this ensure that a binary
176 mount is used, e.g. mount -b c:\somewhere /home.
178 "bc" is not provided in older Cygwin distribution. This causes a
179 non-fatal error in "make test" but is otherwise harmless. If
180 desired and needed, GNU bc can be built with Cygwin without change.
185 * Compiler and shell environment installation:
187 MinGW and MSYS are available from http://www.mingw.org/, both are
188 required. Run the installers and do whatever magic they say it takes
189 to start MSYS bash shell with GNU tools on its PATH.
199 This will create the library and binaries in root source directory
200 and openssl.exe application in apps directory.
202 It is also possible to cross-compile it on Linux by configuring
203 with './Configure --cross-compile-prefix=i386-mingw32- mingw ...'.
204 'make test' is naturally not applicable then.
206 libcrypto.a and libssl.a are the static libraries. To use the DLLs,
207 link with libeay32.a and libssl32.a instead.
209 See troubleshooting if you get error messages about functions not
210 having a number assigned.
215 If you used the Cygwin procedure above, you have already installed and
216 can skip this section. For all other procedures, there's currently no real
217 installation procedure for Win32. There are, however, some suggestions:
219 - do nothing. The include files are found in the inc32/ subdirectory,
220 all binaries are found in out32dll/ or out32/ depending if you built
221 dynamic or static libraries.
223 - do as is written in INSTALL.Win32 that comes with modssl:
228 $ md c:\openssl\include
229 $ md c:\openssl\include\openssl
230 $ copy /b inc32\openssl\* c:\openssl\include\openssl
231 $ copy /b out32dll\ssleay32.lib c:\openssl\lib
232 $ copy /b out32dll\libeay32.lib c:\openssl\lib
233 $ copy /b out32dll\ssleay32.dll c:\openssl\bin
234 $ copy /b out32dll\libeay32.dll c:\openssl\bin
235 $ copy /b out32dll\openssl.exe c:\openssl\bin
237 Of course, you can choose another device than c:. C: is used here
238 because that's usually the first (and often only) harddisk device.
239 Note: in the modssl INSTALL.Win32, p: is used rather than c:.
245 Since the Win32 build is only occasionally tested it may not always compile
246 cleanly. If you get an error about functions not having numbers assigned
247 when you run ms\do_ms then this means the Win32 ordinal files are not up to
250 > perl util\mkdef.pl crypto ssl update
252 then ms\do_XXX should not give a warning any more. However the numbers that
253 get assigned by this technique may not match those that eventually get
254 assigned in the CVS tree: so anything linked against this version of the
255 library may need to be recompiled.
257 If you get errors about unresolved symbols there are several possible
260 If this happens when the DLL is being linked and you have disabled some
261 ciphers then it is possible the DEF file generator hasn't removed all
262 the disabled symbols: the easiest solution is to edit the DEF files manually
263 to delete them. The DEF files are ms\libeay32.def ms\ssleay32.def.
265 Another cause is if you missed or ignored the errors about missing numbers
268 If you get warnings in the code then the compilation will halt.
270 The default Makefile for Win32 halts whenever any warnings occur. Since VC++
271 has its own ideas about warnings which don't always match up to other
272 environments this can happen. The best fix is to edit the file with the
273 warning in and fix it. Alternatively you can turn off the halt on warnings by
274 editing the CFLAG line in the Makefile and deleting the /WX option.
276 You might get compilation errors. Again you will have to fix these or report
279 One final comment about compiling applications linked to the OpenSSL library.
280 If you don't use the multithreaded DLL runtime library (/MD option) your
281 program will almost certainly crash because malloc gets confused -- the
282 OpenSSL DLLs are statically linked to one version, the application must
283 not use a different one. You might be able to work around such problems
284 by adding CRYPTO_malloc_init() to your program before any calls to the
285 OpenSSL libraries: This tells the OpenSSL libraries to use the same
286 malloc(), free() and realloc() as the application. However there are many
287 standard library functions used by OpenSSL that call malloc() internally
288 (e.g. fopen()), and OpenSSL cannot change these; so in general you cannot
289 rely on CRYPTO_malloc_init() solving your problem, and you should
290 consistently use the multithreaded library.
292 Linking your application
293 ------------------------
295 If you link with static OpenSSL libraries [those built with ms/nt.mak],
296 then you're expected to additionally link your application with
297 WS2_32.LIB, ADVAPI32.LIB, GDI32.LIB and USER32.LIB. Those developing
298 non-interactive service applications might feel concerned about linking
299 with the latter two, as they are justly associated with interactive
300 desktop, which is not available to service processes. The toolkit is
301 designed to detect in which context it's currently executed, GUI,
302 console app or service, and act accordingly, namely whether or not to
303 actually make GUI calls.
305 If you link with OpenSSL .DLLs, then you're expected to include into
306 your application code small "shim" snippet, which provides glue between
307 OpenSSL BIO layer and your compiler run-time. Look up OPENSSL_Applink
308 reference page for further details.