CygWin32 support.

Submitted by: John Jarvie <jjarvie@newsguy.com>

CHANGES

@@ -4,6 +4,9 @@
 
  Changes between 0.9.5a and 0.9.6  [xx XXX 2000]
 
+  *) CygWin32 support.
+     [John Jarvie <jjarvie@newsguy.com>]
+
   *) The type-safe stack code has been rejigged. It is now only compiled
      in when OpenSSL is configured with the DEBUG_SAFESTACK option and
      by default all type-specific stack functions are "#define"d back to

Configure

@@ -362,12 +362,14 @@ my %table=(
 "BC-32","bcc32:::::BN_LLONG DES_PTR RC4_INDEX:::",
 "BC-16","bcc:::(unknown)::BN_LLONG DES_PTR RC4_INDEX SIXTEEN_BIT:::",
 
-# CygWin32
+# Mingw32
 # (Note: the real CFLAGS for Windows builds are defined by util/mk1mf.pl
 # and its library files in util/pl/*)
-"CygWin32", "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:",
 "Mingw32", "gcc:-DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:",
 
+# CygWin32
+"CygWin32", "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:",
+
 # Ultrix from Bernhard Simon <simon@zid.tuwien.ac.at>
 "ultrix-cc","cc:-std1 -O -Olimit 1000 -DL_ENDIAN::(unknown)::::::",
 "ultrix-gcc","gcc:-O3 -DL_ENDIAN::(unknown)::::::",
@@ -386,7 +388,7 @@ my %table=(
 );
 
 my @WinTargets=qw(VC-NT VC-WIN32 VC-WIN16 VC-W31-16 VC-W31-32 VC-MSDOS BC-32
-	BC-16 CygWin32 Mingw32);
+	BC-16 Mingw32);
 
 my $prefix="";
 my $openssldir="";

INSTALL.W32

@@ -134,6 +134,52 @@
    > cd out
    > ..\ms\test
 
+ GNU C (CygWin32)
+ ---------------
+
+ CygWin32 provides a bash shell and GNU tools environment running on
+ NT 4.0, Windows 9x and Windows 2000. Consequently, a make of OpenSSL
+ with CygWin is closer to a GNU bash environment such as Linux rather
+ than other W32 makes that are based on a single makefile approach.
+ CygWin32 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 CygWin32:
+
+ * Install CygWin32 (see http://sourceware.cygnus.com/cygwin)
+
+ * Install Perl and ensure it is in the path
+
+ * Run the CygWin bash shell
+
+ * $ tar zxvf openssl-x.x.x.tar.gz
+   $ cd openssl-x.x.x
+   $ ./Configure no-threads CygWin32
+   [...]
+   $ make
+   [...]
+   $ make test
+   $ make install
+
+ This will create a default install in /usr/local/ssl.
+
+ CygWin32 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.
+
+ As of version 1.1.1 CygWin32 is relatively unstable in its handling
+ of cr/lf issues. These make procedures succeeded with versions 1.1 and
+ the snapshot 20000524 (Slow!).
+
+ "bc" is not provided in the CygWin32 distribution.  This causes a
+ non-fatal error in "make test" but is otherwise harmless.  If
+ desired, GNU bc can be built with CygWin32 without change.
+
+
  Troubleshooting
  ---------------
 

e_os.h

@@ -108,11 +108,11 @@ extern "C" {
 #  define MS_STATIC
 #endif
 
-#if defined(_WIN32) && !defined(WIN32)
+#if defined(_WIN32) && !defined(WIN32) && !defined(__CYGWIN32__)
 #  define WIN32
 #endif
 
-#if defined(WIN32) || defined(WIN16)
+#if (defined(WIN32) || defined(WIN16)) && !defined(__CYGWIN32__)
 #  ifndef WINDOWS
 #    define WINDOWS
 #  endif
@@ -136,7 +136,7 @@ extern "C" {
 #define clear_sys_error()	errno=0
 #endif
 
-#ifdef WINDOWS
+#if defined(WINDOWS) && !defined(__CYGWIN32__)
 #define get_last_socket_error()	WSAGetLastError()
 #define clear_socket_error()	WSASetLastError(0)
 #define readsocket(s,b,n)	recv((s),(b),(n),0)
@@ -170,7 +170,7 @@ extern "C" {
 #  define NO_FP_API
 #endif
 
-#if defined(WINDOWS) || defined(MSDOS)
+#if (defined(WINDOWS) || defined(MSDOS)) && !defined(__CYGWIN32__)
 
 #  ifndef S_IFDIR
 #    define S_IFDIR	_S_IFDIR