+ Heres a few comments about building OpenSSL in Windows environments. Most
+ of this is tested on Win32 but it may also work in Win 3.1 with some
+ modification.
+
+ You need Perl for Win32. Unless you will build on Cygwin, you will need
+ ActiveState Perl, available from http://www.activestate.com/ActivePerl.
+ For Cygwin users, there's more info in the Cygwin section.
+
+ and one of the following C compilers:
+
+ * Visual C++
+ * Borland C
+ * GNU C (Mingw32 or Cygwin)
+
+ If you want to compile in the assembly language routines with Visual C++ then
+ you will need an assembler. This is worth doing because it will result in
+ faster code: for example it will typically result in a 2 times speedup in the
+ RSA routines. Currently the following assemblers are supported:
+
+ * Microsoft MASM (aka "ml")
+ * Free Netwide Assembler NASM.
+
+ MASM was at one point distributed with VC++. It is now distributed with some
+ Microsoft DDKs, for example the Windows NT 4.0 DDK and the Windows 98 DDK. If
+ you do not have either of these DDKs then you can just download the binaries
+ for the Windows 98 DDK and extract and rename the two files XXXXXml.exe and
+ XXXXXml.err, to ml.exe and ml.err and install somewhere on your PATH. Both
+ DDKs can be downloaded from the Microsoft developers site www.msdn.com.
+
+ NASM is freely available. Version 0.98 was used during testing: other versions
+ may also work. It is available from many places, see for example:
+ http://www.kernel.org/pub/software/devel/nasm/binaries/win32/
+ The NASM binary nasmw.exe needs to be installed anywhere on your PATH.
+
+ If you are compiling from a tarball or a CVS snapshot then the Win32 files
+ may well be not up to date. This may mean that some "tweaking" is required to
+ get it all to work. See the trouble shooting section later on for if (when?)
+ it goes wrong.
+
+ Visual C++
+ ----------
+
+ Firstly you should run Configure:
+
+ > perl Configure VC-WIN32
+
+ Next you need to build the Makefiles and optionally the assembly language
+ files:
+
+ - If you are using MASM then run:
+
+ > ms\do_masm
+
+ - If you are using NASM then run:
+
+ > ms\do_nasm
+
+ - If you don't want to use the assembly language files at all then run:
+
+ > ms\do_ms
+
+ If you get errors about things not having numbers assigned then check the
+ troubleshooting section: you probably won't be able to compile it as it
+ stands.
+
+ Then from the VC++ environment at a prompt do:
+
+ > 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:
+
+ > cd out32dll
+ > ..\ms\test
+
+ Tweaks:
+
+ There are various changes you can make to the Win32 compile environment. By
+ default the library is not compiled with debugging symbols. If you add 'debug'
+ to the mk1mf.pl lines in the do_* batch file then debugging symbols will be
+ compiled in.
+
+ The default Win32 environment is to leave out any Windows NT specific
+ features.
+
+ If you want to enable the NT specific features of OpenSSL (currently only the
+ logging BIO) follow the instructions above but call the batch file do_nt.bat
+ instead of do_ms.bat.
+
+ You can also build a static version of the library using the Makefile
+ ms\nt.mak
+
+ Borland C++ builder 5
+ ---------------------
+
+ * Configure for building with Borland Builder:
+ > perl Configure BC-32
+
+ * Create the appropriate makefile
+ > ms\do_nasm
+
+ * Build
+ > make -f ms\bcb.mak
+
+ Borland C++ builder 3 and 4
+ ---------------------------
+
+ * Setup PATH. First must be GNU make then bcb4/bin
+
+ * Run ms\bcb4.bat
+
+ * Run make:
+ > make -f bcb.mak
+
+ GNU C (Mingw32)
+ ---------------
+
+ To build OpenSSL, you need the Mingw32 package and GNU make.
+
+ * Compiler installation:
+
+ Mingw32 is available from <ftp://ftp.xraylith.wisc.edu/pub/khan/
+ gnu-win32/mingw32/gcc-2.95.2/gcc-2.95.2-msvcrt.exe>. Extract it
+ to a directory such as C:\gcc-2.95.2 and add c:\gcc-2.95.2\bin to
+ the PATH environment variable in "System Properties"; or edit and
+ run C:\gcc-2.95.2\mingw32.bat to set the PATH.
+
+ * Compile OpenSSL:
+
+ > ms\mingw32
+
+ This will create the library and binaries in out. In case any problems
+ occur, try
+ > ms\mingw32 no-asm
+ instead.
+
+ libcrypto.a and libssl.a are the static libraries. To use the DLLs,
+ link with libeay32.a and libssl32.a instead.
+
+ See troubleshooting if you get error messages about functions not having
+ a number assigned.
+
+ * You can now try the tests:
+
+ > cd out
+ > ..\ms\test
+
+ GNU C (Cygwin)
+ --------------
+
+ Cygwin provides a bash shell and GNU tools environment running
+ on NT 4.0, Windows 9x, Windows ME, Windows 2000, and Windows XP.
+ Consequently, a make of OpenSSL with Cygwin is closer to a GNU
+ bash environment such as Linux than to other W32 makes which are
+ based on a single makefile approach. Cygwin implements Posix/Unix
+ calls through cygwin1.dll, and is contrasted to Mingw32 which links
+ dynamically to msvcrt.dll or crtdll.dll.
+
+ To build OpenSSL using Cygwin:
+
+ * Install Cygwin (see http://cygwin.com/)
+
+ * Install Perl and ensure it is in the path (recent Cygwin perl
+ (version 5.6.1-2 of the latter has been reported to work) or
+ ActivePerl)
+
+ * Run the Cygwin bash shell
+
+ * $ tar zxvf openssl-x.x.x.tar.gz
+ $ cd openssl-x.x.x
+ $ ./config
+ [...]
+ $ make
+ [...]
+ $ make test
+ $ make install
+
+ This will create a default install in /usr/local/ssl.
+
+ 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.
+
+ "bc" is not provided in older Cygwin distribution. This causes a
+ non-fatal error in "make test" but is otherwise harmless. If
+ desired and needed, GNU bc can be built with Cygwin without change.
+
+
+ Installation
+ ------------
+
+ If you used the Cygwin procedure above, you have already installed and
+ can skip this section. For all other procedures, there's currently no real
+ installation procedure for Win32. There are, however, some suggestions:
+
+ - do nothing. The include files are found in the inc32/ subdirectory,
+ all binaries are found in out32dll/ or out32/ depending if you built
+ dynamic or static libraries.
+
+ - do as is written in INSTALL.Win32 that comes with modssl:
+
+ $ md c:\openssl
+ $ md c:\openssl\bin
+ $ md c:\openssl\lib
+ $ md c:\openssl\include
+ $ md c:\openssl\include\openssl
+ $ copy /b inc32\* c:\openssl\include\openssl
+ $ copy /b out32dll\ssleay32.lib c:\openssl\lib
+ $ copy /b out32dll\libeay32.lib c:\openssl\lib
+ $ copy /b out32dll\ssleay32.dll c:\openssl\bin
+ $ copy /b out32dll\libeay32.dll c:\openssl\bin
+ $ copy /b out32dll\openssl.exe c:\openssl\bin
+
+ Of course, you can choose another device than c:. C: is used here
+ because that's usually the first (and often only) harddisk device.
+ Note: in the modssl INSTALL.Win32, p: is used rather than c:.
+
+
+ Troubleshooting
+ ---------------
+
+ Since the Win32 build is only occasionally tested it may not always compile
+ cleanly. If you get an error about functions not having numbers assigned
+ when you run ms\do_ms then this means the Win32 ordinal files are not up to
+ date. You can do:
+
+ > perl util\mkdef.pl crypto ssl update
+
+ then ms\do_XXX should not give a warning any more. However the numbers that
+ get assigned by this technique may not match those that eventually get
+ assigned in the CVS tree: so anything linked against this version of the
+ library may need to be recompiled.
+
+ If you get errors about unresolved symbols there are several possible
+ causes.
+
+ If this happens when the DLL is being linked and you have disabled some
+ ciphers then it is possible the DEF file generator hasn't removed all
+ the disabled symbols: the easiest solution is to edit the DEF files manually
+ to delete them. The DEF files are ms\libeay32.def ms\ssleay32.def.
+
+ Another cause is if you missed or ignored the errors about missing numbers
+ mentioned above.
+
+ If you get warnings in the code then the compilation will halt.
+
+ The default Makefile for Win32 halts whenever any warnings occur. Since VC++
+ has its own ideas about warnings which don't always match up to other
+ environments this can happen. The best fix is to edit the file with the
+ warning in and fix it. Alternatively you can turn off the halt on warnings by
+ editing the CFLAG line in the Makefile and deleting the /WX option.
+
+ You might get compilation errors. Again you will have to fix these or report
+ them.
+
+ One final comment about compiling applications linked to the OpenSSL library.
+ If you don't use the multithreaded DLL runtime library (/MD option) your
+ program will almost certainly crash because malloc gets confused -- the
+ OpenSSL DLLs are statically linked to one version, the application must
+ not use a different one. You might be able to work around such problems
+ by adding CRYPTO_malloc_init() to your program before any calls to the
+ OpenSSL libraries: This tells the OpenSSL libraries to use the same
+ malloc(), free() and realloc() as the application. However there are many
+ standard library functions used by OpenSSL that call malloc() internally
+ (e.g. fopen()), and OpenSSL cannot change these; so in general you cannot
+ rely on CRYPTO_malloc_init() solving your problem, and you should
+ consistently use the multithreaded library.