RE: build failure of octave-2.1.5x under Cygwin

[Billinghurst, David (CALCRTS)]

Here is how I have built octave 2.1.51 and 2.1.52.  

First make yourself a shared libstdc++
 - put the makefile below in an empty directory
 - make dll
 - make install

Edit configure as shown in diff below

Configure and build octave
 - configure --disable-static --enable-shared
 - make
 - make check
 - make install

You may like to delete or rename the libstdc++.dll.a unless
you want other c++ applications to use an untested shared lib.


#########################################################
# Makefile for cygwin shared libstdc++
#
OBJ = $(shell ar -t /usr/lib/libstdc++.a)

test:
        echo $(OBJ)

$(OBJ): /usr/lib/libstdc++.a
        ar -x $<

dll: libstdc++.dll.a cygstdc++.dll 

libstdc++.dll.a cygstdc++.dll: $(OBJ)
        gcc -shared -Wl,--export-all-symbols,--enable-auto-image-base \
        -Wl,--out-implib,libstdc++.dll.a -o cygstdc++.dll $+

install:
        cp libstdc++.dll.a /usr/local/lib
        cp cygstdc++.dll /usr/local/bin
##################################################################

$ diff -u configure~ configure
--- configure~  2003-11-26 02:38:26.000000000 +1100
+++ configure   2004-02-20 00:15:17.764494400 +1100
@@ -19422,7 +19422,7 @@


 case "$canonical_host_type" in
-  *-*-cygwin*|*-*-mingw32*)
+  *-*-mingw32*)
     gp_names="pgnuplot pipe-gnuplot gnuplot"
     gp_default=pgnuplot
   ;;



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