CSharp test-suite support on windows

- Add pathconvert tool to convert to a windows path for input files for
  C# compiler
- Simplify vcfilter

Examples/test-suite/csharp/Makefile.in

@@ -6,8 +6,7 @@ LANGUAGE     = csharp
 SCRIPTSUFFIX = _runme.cs
 CSHARPCILINTERPRETER  = @CSHARPCILINTERPRETER@
 CSHARPCILINTERPRETER_FLAGS = @CSHARPCILINTERPRETER_FLAGS@
-CSHARPPATHSEPARATOR = "@CSHARPPATHSEPARATOR@"
-CSHARPCYGPATH_W     = @CSHARPCYGPATH_W@
+CSHARPCONVERTPATH     = @top_srcdir@/@CSHARPCONVERTPATH@
 
 srcdir       = @srcdir@
 top_srcdir   = ../@top_srcdir@
@@ -79,13 +78,13 @@ run_testcase = \
 	if [ -f $(SCRIPTDIR)/$(SCRIPTPREFIX)$*$(SCRIPTSUFFIX) ]; then \
 	  $(MAKE) -f $*/$(top_builddir)/$(EXAMPLES)/Makefile \
 	  CSHARPFLAGS='-nologo -debug+ $(CSHARPFLAGSSPECIAL) -out:$*_runme.exe' \
-	  CSHARPSRCS='`$(CSHARPCYGPATH_W) $(SCRIPTDIR)/$(SCRIPTPREFIX)$*$(SCRIPTSUFFIX)` `find $* -name "*.cs" -exec $(CSHARPCYGPATH_W) "{}" \+`' csharp_compile && \
+	  CSHARPSRCS='`$(CSHARPCONVERTPATH) $(SCRIPTDIR)/$(SCRIPTPREFIX)$*$(SCRIPTSUFFIX)` `find $* -name "*.cs" -exec $(CSHARPCONVERTPATH) "{}" \+`' csharp_compile && \
 	  env LD_LIBRARY_PATH="$*:$$LD_LIBRARY_PATH" PATH="$*:$$PATH" SHLIB_PATH="$*:$$SHLIB_PATH" DYLD_FALLBACK_LIBRARY_PATH= $(RUNTOOL) $(CSHARPCILINTERPRETER) $(CSHARPCILINTERPRETER_FLAGS) ./$*_runme.exe; \
 	else \
 	  cd $* && \
 	  $(MAKE) -f $(top_builddir)/$(EXAMPLES)/Makefile \
 	  CSHARPFLAGS='-nologo -debug+ $(CSHARPFLAGSSPECIAL) -t:module -out:$*.netmodule' \
-	  CSHARPSRCS='`find . -name "*.cs" -exec $(CSHARPCYGPATH_W) "{}" \+`' csharp_compile; \
+	  CSHARPSRCS='`find . -name "*.cs" -exec ../$(CSHARPCONVERTPATH) "{}" \+`' csharp_compile; \
 	fi
 
 # Clean: remove testcase directories

Tools/convertpath

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# Unix to Windows relative path conversion in a script.
+# Useful for avoiding backslash quoting difficulties in Makefiles.
+# Acts as a much dumbed down 'cygpath -w' tool.
+
+usage()
+{
+  cat <<EOF
+Usage: $0 [-w|-u|-h] [path]...
+
+Convert Windows and Unix paths (intended for simple relative paths only)
+
+  -w  Convert backslashes to forward slashes in the paths
+  -u  Convert forward slashes to backslashes in the paths
+EOF
+}
+
+option="$1"
+case "$option" in
+  -w) shift; echo $@ | sed -e 's,/,\\,g' ;;
+  -u) shift; echo $@ | sed -e 's,\\,/,g' ;;
+  -h) shift; usage; ;;
+  *) usage; exit 1 ;;
+esac
+
+exit 0

Tools/vcfilter

@@ -2,9 +2,9 @@
 
 # This is a simple utility for Cygwin/Mingw which is useful when running the SWIG
 # test-suite through Visual Studio. If the output from the test-suite is piped
-# through this utility, it will filter the junk that the compiler generates.
+# through this utility, it will filter the junk that the compiler outputs to stdout.
 # Typical usage: make check | vcfilter
 
 # dos2unix needed for ^ and $ to work.
-2>&1 dos2unix | grep -v "\.cxx$" | grep -v "\.c$" | grep -v "^   Creating library" | grep -v "^Generating Code"
+2>&1 dos2unix | grep -v -e "\.cxx$" -e "\.c$" -e "^   Creating library" -e "^Generating Code"
 

configure.ac

@@ -1993,8 +1993,7 @@ else
   CSHARPCOMPILER="$CSHARPCOMPILERBIN"
 fi
 
-CSHARPPATHSEPARATOR="/"
-CSHARPCYGPATH_W=echo
+CSHARPCONVERTPATH="Tools/convertpath -u"
 if test -z "$CSHARPBIN" ; then
   CSHARPCILINTERPRETER=""
   CSHARPCILINTERPRETER_FLAGS=""
@@ -2021,8 +2020,7 @@ if test -z "$CSHARPBIN" ; then
         CSHARPCILINTERPRETER_FLAGS="--debug"
     else
       if test "csc" = "$CSHARPCOMPILER"; then
-          CSHARPPATHSEPARATOR="\\\\"
-          CSHARPCYGPATH_W='cygpath -w'
+          CSHARPCONVERTPATH="Tools/convertpath -w"
       fi
     fi
   fi
@@ -2065,11 +2063,10 @@ fi
 
 AC_SUBST(CSHARPCILINTERPRETER_FLAGS)
 AC_SUBST(CSHARPCILINTERPRETER)
-AC_SUBST(CSHARPPATHSEPARATOR)
-AC_SUBST(CSHARPCYGPATH_W)
+AC_SUBST(CSHARPCONVERTPATH)
 AC_SUBST(CSHARPCOMPILER)
 AC_SUBST(CSHARPDYNAMICLINKING)
-AC_SUBST(CSHARPLIBRARYPREFIX) # Is this going to be used?
+AC_SUBST(CSHARPLIBRARYPREFIX)
 AC_SUBST(CSHARPCFLAGS)
 AC_SUBST(CSHARPSO)