Hi list, this is my first post here.
I'm writing an application that uses SDL, lib3ds and glib
I've installed SDL and lib3ds from sources, both compiled with -mno-cygwin, while glib (2.2) comes from here http://web.sfc.keio.ac.jp/~s01397ms/cygwin/
I wasn't able to compile it from sources, still need to understand why.
Anyway after I actually compiled my application I run it and ... SIGSEGV
So, your application is linked both with cygwin1.dll, and with Microsoft's C library (msvcrt or crtldd) indirectly, via sdl and lib3ds which are built with -mno-cygwin.
You can't do that. See http://cygwin.com/faq/faq_4.html#SEC99
(The application works in my linux box) With gdb I was able to collect this stack trace:
Program received signal SIGSEGV, Segmentation fault. 0x61021a8b in unsetenv () from /usr/bin/cygwin1.dll (gdb) bt #0 0x61021a8b in unsetenv () from /usr/bin/cygwin1.dll #1 0x6101f9b2 in dlfork () from /usr/bin/cygwin1.dll
That probable means that cygwin's version of unsetenv() is called on variable that was set by Microsoft's runtime. You have to build cygwin versions of those 3rd-party libraries you use.
[...]
interestend in compiling only src/winsup/cygwin and not all cygwin. Is it possible? How?
src/winsup/cygwin is basically all cygwin. You can tweak build process to avoid building misc utilities such as cygcheck etc., but it won't save you much time or disk space.
If i can compile it I'll able to understand where's the problem
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