Also you might find this template interesting for porting the external:

http://pure-data.svn.sourceforge.net/viewvc/pure-data/trunk/externals/templa...

Hello, I'm afraid the work to be made isn't in the Makefile but in source files,

did you give a try with this:

http://readlist.com/lists/lists.sourceforge.net/mingw-users/1/9807.html

?

Colet Patrice

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De: "Thomas Mayer" thomas@residuum.org À: pd-dev@iem.at Envoyé: Vendredi 10 Août 2012 10:49:15 Objet: [PD-dev] Cross Compiling External for Windows - Problem

Hello,

I try to cross compile my external PuREST JSON for Windows using MXE on Linux. According to their tutorial, a little work is necessary on the Makefile to be able to cross-compile (http://mxe.cc/#tutorial):

-- Start quote -- Step 5d: Cross compile your Project (Makefile)

If you have a handwritten Makefile, you probably will have to make a few adjustments to it:

CC=$(CROSS)gcc LD=$(CROSS)ld AR=$(CROSS)ar PKG_CONFIG=$(CROSS)pkg-config

You may have to add a few others, depending on your project.

Then, all you have to do is:

make CROSS=i686-pc-mingw32-

That's it! -- End     quote --

That is, what I tried, and compilation is working, but the linker does not work, and outputs:

i686-pc-mingw32-gcc -shared -o libpurest_json.dll libpurest_json.o -lcurl -ljson -L"/home/thomas/src/Pd-0.42.5-extended/pd-win/src" -L"/home/thomas/src/Pd-0.42.5-extended/pd-win/bin" -L"/home/thomas/src/Pd-0.42.5-extended/pd-win/obj" -lpd -lwsock32 -lkernel32 -luser32 -lgdi32 -liberty -lpthread libpurest_json.o: In function `output_json': /home/thomas/src/pd/my-objects/purest_json/libpurest_json.c:145: undefined reference to `s_list' /opt/mxe/usr/lib/gcc/i686-pc-mingw32/4.7.1/../../../../i686-pc-mingw32/lib/libjson.a(printbuf.o): In function `vasprintf': /opt/mxe/tmp-json-c/json-c-0.10/printbuf.c:130: undefined reference to `_vscprintf' /opt/mxe/usr/lib/gcc/i686-pc-mingw32/4.7.1/../../../../i686-pc-mingw32/lib/libmingwex.a(pformat.o):pformat.c:(.text+0x1732): undefined reference to `_get_output_format' collect2: error: ld returned 1 exit status make: *** [libpurest_json.dll] Fehler 2

I have pd.dll in the path /home/thomas/src/Pd-0.42.5-extended/pd-win/bin.

The complete Makefile and input / output of make is at https://gist.github.com/3307768

Here are my questions: Does gcc use the wrong linker (ld instead of i686-pc-mingw32-ld)? Is there a way to force gcc to use the correct linker? Do I something else than pd.dll for linking?

Thanks in advance, Thomas -- "Theoretically, [the amount of money in circulation] is watched carefully by clever, serious economists. In practice, all the world's money is one big swirling, whirling pool." (Cory Doctorow - For The Win) http://www.residuum.org/

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