[PD] MinGW + Eclipse + MSWIN helloworld

[Hans-Christoph Steiner]

On Thu, 14 Jul 2011 20:15 +0200, "luca paganotti"
<luca.paganotti at gmail.com> wrote:
> On Thu, Jul 14, 2011 at 7:02 PM, Hans-Christoph Steiner
> <hans at at.or.at>wrote:
> 
> >
> > On Thu, 14 Jul 2011 12:44 -0400, "Mathieu Bouchard" <matju at artengine.ca>
> > wrote:
> > > On Thu, 14 Jul 2011, luca paganotti wrote:
> > >
> > > > but ... I get 'undefined reference' (s) for all the pd symbols that are
> > > > used by helloworld.c i.e. pd_new, gensym, class_new, class_addbang,
> > post
> > >
> > > You need to use the -shared option to produce a .so or .DLL file.
> > >
> > > In addition, you need to link with PD.DLL (a Windows-only requirement...
> > > no such equivalent on other platforms).
> >
> > Hey Luca,
> >
> > This is great, that you got this far!  Can you write up a wiki page in
> > the dev section. Don't worry too much about formatting, mostly just get
> > the info in there.
> > http://puredata.info/docs/developer
> >
> 
> I think it's a very trivial thing for a wiki page, I mean is not such a
> great thing ....
> 
> 
> >
> > As for Makefiles, if you use the the Library Template, then the Makefile
> > will work on MinGW, Cygwin, Mac OS X, GNU/Linux, Android, iOS, etc.
> > http://puredata.info/docs/developer/LibraryTemplate
> >
> > .hc
> >
> 
> ok, got the template from svn,
> 
> use it as it is trying to build a 'mycobject' as defined by the code ...
> 
> getting these results in eclipse console:
> 
> **** Build of configuration Default for project mycobject ****
> 
> make all
> Building target: mycobject
> Invoking: MinGW C++ Linker
> g++ -L"C:\Programmi\pd\bin" -o"mycobject"  ./mycobject.o
> -l"C:/Programmi/pd/bin/pd.lib"
> c:/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../../mingw32/bin/ld.exe:
> cannot
> find -lC:/Programmi/pd/bin/pd.lib
> collect2: ld returned 1 exit status
> make: *** [mycobject] Error 1
> 
> what I really do not understand is that I have my pd.lib file exactly in
> the
> folder were ld on bhalf eclipse searches for it, i.e.
> C:\Programmi\pd\bin\pd.lib
> 
> Anyway I then tryed the hard way from the mingw console issueing a 'make
> all' getting finally a usefull error message:
> 
> Pag at XP-PAG /c/dev/c++/pd-externals/mycobject
> $ make clean
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> rm -f -- mycobject.o
> rm -f -- mycobject.dll
> rm -f -- mycobject.o
> rm -f -- mycobject.dll
> 
> Pag at XP-PAG /c/dev/c++/pd-externals/mycobject
> $ make all
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> cc -I"/c/Programmi/pd/include/pd" -Wall -W -g -DPD -DVERSION='""'
> -mms-bitfields
>  -O3 -funroll-loops -fomit-frame-pointer -o "mycobject.o" -c
>  "mycobject.c"
> /bin/sh: cc: command not found
> make: *** [mycobject.o] Error 127
> 
> perhaps does it means that the compiler command is not defined in the
> makefile?
> 
> I added this line
> 
> CC = gcc
> 
> between the OS = windows and PD_PATH = $(shell cd "$(PROGRAMFILES)"/pd &&
> pwd) lines
> 
> inside the ifeq (MINGW,$(findstring MINGW,$(UNAME))) ... endif  block
> 
> and then got:
> 
> Pag at XP-PAG /c/dev/c++/pd-externals/mycobject
> $ make all
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> sed: can't read mycobject-meta.pd: No such file or directory
> gcc -I"/c/Programmi/pd/include/pd" -Wall -W -g -DPD -DVERSION='""'
> -mms-bitfield
> s -O3 -funroll-loops -fomit-frame-pointer -o "mycobject.o" -c
> "mycobject.c"
> gcc  -s -shared -Wl,--enable-auto-import -o "mycobject.dll" "mycobject.o"
> -L"/
> c/Programmi/pd/src/" -L"/c/Programmi/pd/bin/" -lpd -lwsock32 -lkernel32
> -luser32
>  -lgdi32
> chmod a-x "mycobject.dll"
> 
> Pag at XP-PAG /c/dev/c++/pd-externals/mycobject
> $
> 
> I got the mycobject dll that runs fine under pd-extended on a windows
> box.
> 
> Still wondering why eclise doen't find my pd.lib
> 
> At least this is working now from the command line.


I finally added some "getting started" instructions, hopefully this is
useful:

https://puredata.info/docs/developer/LibraryTemplate

.hc