[cairo] Tripping on first step - cannot compile "hello world" with Cairo on Mingwenv

[Dimiter 'malkia' Stanev]

Try adding -mconsole to the mingw compiler, as you have main() instead 
of WinMain()

I haven't used much it, so I could be wrong, I was just digging through 
some options (this is from the cygwin shell, invoking it's own mingw 
compiler, but they should be close to yours)

dstanev at dstanev-764 ~
$ i686-w64-mingw32-gcc --help -v -v 2>&1 | grep WinMain

dstanev at dstanev-764 ~
$ i686-w64-mingw32-gcc --help -v -v 2>&1 | grep -i main
   -F <dir>                    Add <dir> to the end of the main framework
   -I <dir>                    Add <dir> to the end of the main include path
   -Wmain                      Warn about suspicious declarations of "main"
   -Wunused-macros             Warn about macros defined in the main 
file that
                               "main" exist
   -iwithprefixbefore <dir>    Add <dir> to the end of the main include path

dstanev at dstanev-764 ~
$ i686-w64-mingw32-gcc --help -v -v 2>&1 | grep -i windows
   -mwin32                     Set Windows defines
   -mwindows                   Create GUI application

dstanev at dstanev-764 ~
$ i686-w64-mingw32-gcc --help -v -v 2>&1 | grep -i console
   -mconsole                   Create console application


On 3/8/2012 11:22 AM, mathog wrote:
> On 08-Mar-2012 10:49, Chris Wilson wrote:
>
>> During linking, the order is important: symbols are resolved to the
>> right. That is test.c will look up its symbols in libcairo.dll.a then
>> libgdk-win32-2.0.dll.a and libcairo.dll.a will lookup its symbols in
>> libgdk-win32-2.0.dll.a etc.
>
> I thought that was just for static libraries, dynamic shouldn't matter.
> In any case, rewrote it as:
>
> mingw32-gcc -c -o test.obj -mms-bitfields
> -Ic:/progs/devlibs2/include/gtk-2.0
> -Ic:/progs/devlibs2/lib/gtk-2.0/include
> -Ic:/progs/devlibs2/include/atk-1.0 -Ic:/progs/devlibs2/include/cairo
> -Ic:/progs/devlibs2/include/gdk-pixbuf-2.0
> -Ic:/progs/devlibs2/include/pango-1.0
> -Ic:/progs/devlibs2/include/glib-2.0
> -Ic:/progs/devlibs2/lib/glib-2.0/include
> -Ic:/progs/devlibs2/include/pixman-1 -Ic:/progs/devlibs2/include
> -Ic:/progs/devlibs2/include/freetype2
> -Ic:/progs/devlibs2/include/libpng12 test.c
>
> mingw32-gcc -o test test.obj -mms-bitfields -Lc:/progs/devlibs2/lib
> -Lc:/progs/mingw/lib -lgtk-win32-2.0 -lgdk-win32-2.0 -latk-1.0 -lgio-2.0
> -lpangowin32-1.0 -lgdi32 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lpango-1.0
> -lcairo -lgobject-2.0 -lgmodule-2.0 -lgthread-2.0 -lglib-2.0 -lintl
>
> but it still emits:
>
> c:/progs/mingw/lib/libmingw32.a(main.o):main.c:(.text+0xd2): undefined
> reference to `WinMain at 16'
> collect2: ld returned 1 exit status
>
> It does that even if the entire set of -l options is repeated again.
> Maybe the the cairo example needs something
> else to build on Windows, like some ifdef to cause it to include a WinMain?
>
> Thanks,
>
>
> David Mathog
> mathog at caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
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