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Message-ID: <3A31D6D4.4FCFACCE@ece.gatech.edu>
Date: Sat, 09 Dec 2000 01:53:08 -0500
From: "Charles S. Wilson" <cwilson AT ece DOT gatech DOT edu>
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To: "Steven O'Brien" <steven_obrien AT lineone DOT net>, cygwin AT sources DOT redhat DOT com
Subject: Re: cygncurses++5.dll [WAS Re: building dlls, C and C++]
References: <000c01c05f8c$0b61e8c0$04288cd4 AT emerald> <3A2E5262 DOT 9413477D AT ece DOT gatech DOT edu>
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Looks good to me -- demo.exe + cygncurses++5.dll seems to work just
great with your changes.  I've incorporated them (along with others)
into ncurses-5.2-3 which should be available for test very soon.

Thanks, Steven!!!

--Chuck


"Charles S. Wilson" wrote:
> 
> Very cool -- thanks.  I'll take a look at this over the weekend.
> 
> --Chuck
> 
> Steven O'Brien wrote:
> >
> > The only outstanding issue from my previous mail on ncurses++ is the need to
> > invent a main() function in the dll build which was not needed in the static
> > build.
> >
> > The c++ sources include a default main() (in c++/cursesmain.cc) which is
> > linked into the static lib and therefore picked up by a static link, so no
> > need for the application writer to provide one.
> >
> > However, when the main() is put into a DLL, the linker can no longer find it
> > when building an exe - hence the link error about WinMain AT 16. Modifying
> > c++/Makefile so that c++/cursesmain.o is ommited fro the dll, but then added
> > to the import library with ar, means that the shared build now works without
> > an application main() just like the static build.
> >
> > As far as I can tell, the runtime behaviour of c++/demo.exe is now identical
> > whether linked shared or static. I attach a patch which includes all the
> > mods I made doing these trials. It replaces
> > CYGWIN-PATCHES/ncurses-5.2-c++-dll.patch. So to build ncurses, using dynamic
> > linking, from the cygwin sources:
> >
> > tar zxvf ncurses-5.2-2-src.tar.gz
> > cd ncurses-5.2
> > export CFLAGS=-DNCURSES_DLL
> > export CXXFLAGS=$CFLAGS
> >  ./configure --enable-symlinks --enable-sigwinch --enable-colorfgbg   \
> >                     --enable-tcap-names --with-manpage-symlinks --without-de
> > bug   \
> >                     --with-normal --disable-termcap --prefix=/usr  \
> >                     --with-default-terminfo-dir=/usr/share/terminfo   \
> >                     --enable-echo --with-manpage-symlinks
> > patch -p1 < CYGWIN-PATCHES/ncurses-5.2-2-dll.patch
> > patch -p1 < ncurses-5.2-c++-dll-2.patch
> > make
> >
> > In the above, replace "ncurses-5.2-c++-dll-2.patch" with the path where you
> > have placed (and unzipped) the attached patch file.
> >
> > Steve
> >
> >   ------------------------------------------------------------------------
> >                                      Name: ncurses-5.2-c++-dll-2.patch.gz
> >    ncurses-5.2-c++-dll-2.patch.gz    Type: application/x-unknown-content-type-patch_auto_file
> >                                  Encoding: base64
> >
> >   ------------------------------------------------------------------------
> > --
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