The attached patch enables the contrib subtree to build cleanly under

Cygwin with the possible exception of mSQL-interface.  Since I don't
have mSQL installed, I skipped this tool.

Except for dealing with a missing getopt.h (oid2name) and HUGE (seg),
the bulk of the patch uses the standard PostgreSQL approach to deal with
Windows DLL issues.

I tested the build aspect of this patch under Cygwin and Linux without
any ill affects.  Note that I did not actually attempt to test the code
for functionality.

The procedure to apply the patch is as follows:

    $ # save the attachment as /tmp/contrib.patch
    $ # change directory to the top of the PostgreSQL source tree
    $ patch -p0 </tmp/contrib.patch

Jason

contrib/seg/Makefile

@@ -1,5 +1,5 @@
 #
-# $Header: /cvsroot/pgsql/contrib/seg/Makefile,v 1.3 2001/02/20 19:20:28 petere Exp $
+# $Header: /cvsroot/pgsql/contrib/seg/Makefile,v 1.4 2001/06/18 21:38:02 momjian Exp $
 #
 
 subdir = contrib/seg
@@ -15,6 +15,7 @@ SO_MAJOR_VERSION= 1
 SO_MINOR_VERSION= 0
 
 override CPPFLAGS := -I$(srcdir) $(CPPFLAGS)
+override DLLLIBS := $(BE_DLLLIBS) $(DLLLIBS)
 
 OBJS= seg.o segparse.o segscan.o buffer.o
 

contrib/seg/segparse.y

@@ -11,6 +11,10 @@
 #include "postgres.h"
 #include "utils/elog.h"
   
+#ifdef __CYGWIN__
+#define HUGE HUGE_VAL
+#endif /* __CYGWIN__ */
+
 #undef yylex                  /* falure to redefine yylex will result in calling the */
 #define yylex seg_yylex       /* wrong scanner when running inside postgres backend  */