Hello, I want to compile Allegro 5 for Windows (under Linux) with OGG/Vorbis support. However, I am having a problem trying to get it to work because cmake is unable to compile the test code for Vorbis, and refuses to include it. libvorbis and libvorbisfile (already compiled with mingw-w64) were installed in /usr/i686-w64-mingw32. I've already cross-compiled the other libraries: zlib, libpng, libjpeg, freetype, flac and libogg.

Allegro 5 was configured with the following:

cmake -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchain-mingw.cmake -DSHARED=off -DCMAKE_INSTALL_PREFIX=/usr/i686-w64-mingw32 ..

And this is the cmake output:

-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc
-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/i686-w64-mingw32-g++
-- Check for working CXX compiler: /usr/bin/i686-w64-mingw32-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Guessed MinGW directory: /usr
-- Performing Test HAVE_DM_POSITION
-- Performing Test HAVE_DM_POSITION - Success
-- Allowing GCC to use SSE instructions
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26") 
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Looking for include file dirent.h
-- Looking for include file dirent.h - found
-- Looking for include file inttypes.h
-- Looking for include file inttypes.h - found
-- Looking for include files sys/types.h, linux/joystick.h
-- Looking for include files sys/types.h, linux/joystick.h - not found
-- Looking for include file stdbool.h
-- Looking for include file stdbool.h - found
-- Looking for include file stdint.h
-- Looking for include file stdint.h - found
-- Looking for include file sys/io.h
-- Looking for include file sys/io.h - not found
-- Looking for include file sys/stat.h
-- Looking for include file sys/stat.h - found
-- Looking for include file sys/time.h
-- Looking for include file sys/time.h - found
-- Looking for include file time.h
-- Looking for include file time.h - found
-- Looking for include file sys/utsname.h
-- Looking for include file sys/utsname.h - not found
-- Looking for include file sys/types.h
-- Looking for include file sys/types.h - found
-- Looking for include file soundcard.h
-- Looking for include file soundcard.h - not found
-- Looking for include file sys/soundcard.h
-- Looking for include file sys/soundcard.h - not found
-- Looking for include file machine/soundcard.h
-- Looking for include file machine/soundcard.h - not found
-- Looking for include file linux/soundcard.h
-- Looking for include file linux/soundcard.h - not found
-- Looking for include file libkern/OSAtomic.h
-- Looking for include file libkern/OSAtomic.h - not found
-- Looking for include file sys/inotify.h
-- Looking for include file sys/inotify.h - not found
-- Looking for include file sys/timerfd.h
-- Looking for include file sys/timerfd.h - not found
-- Looking for getexecname
-- Looking for getexecname - not found
-- Looking for mkstemp
-- Looking for mkstemp - not found
-- Looking for mmap
-- Looking for mmap - not found
-- Looking for mprotect
-- Looking for mprotect - found
-- Looking for sched_yield
-- Looking for sched_yield - found
-- Looking for sysconf
-- Looking for sysconf - not found
-- Looking for fseeko
-- Looking for fseeko - found
-- Looking for ftello
-- Looking for ftello - found
-- Check size of _Bool
-- Check size of _Bool - done
-- Performing Test ALLEGRO_HAVE_PROCFS_ARGCV
-- Performing Test ALLEGRO_HAVE_PROCFS_ARGCV - Failed
-- Performing Test ALLEGRO_HAVE_SV_PROCFS_H
-- Performing Test ALLEGRO_HAVE_SV_PROCFS_H - Failed
-- Performing Test ALLEGRO_HAVE_VA_COPY
-- Performing Test ALLEGRO_HAVE_VA_COPY - Success
-- Found OpenGL: opengl32  
-- Found DINPUT: /usr/i686-w64-mingw32/include  
-- Found D3D9: /usr/i686-w64-mingw32/include  
-- Found D3DX9: /usr/i686-w64-mingw32/include  
-- Found GDIPLUS: /usr/i686-w64-mingw32/include  
-- Performing Test SUPPORT_GDIPLUS
-- Performing Test SUPPORT_GDIPLUS - Success
-- Found DSOUND: /usr/i686-w64-mingw32/include  
-- Found OpenAL: /usr/i686-w64-mingw32/lib/libOpenAL32.dll.a  
-- Found FLAC: /usr/i686-w64-mingw32/include  
-- Performing Test FLAC_COMPILES
-- Performing Test FLAC_COMPILES - Success
-- DLL name for /usr/i686-w64-mingw32/lib/libFLAC.dll.a: libFLAC-8.dll
-- Could NOT find DUMB (missing:  DUMB_INCLUDE_DIR DUMB_LIBRARY) 
WARNING: libdumb not found or compile test failed, disabling support. 
-- Found OGG: /usr/include  
-- Found VORBIS: /usr/include  
-- Performing Test VORBIS_COMPILES
-- Performing Test VORBIS_COMPILES - Failed
WARNING: libvorbis not found or compile test failed, disabling support.
-- Found Freetype: /usr/i686-w64-mingw32/lib/libfreetype.a  
-- Found ZLIB: /usr/i686-w64-mingw32/lib/libz.a (found version "1.2.8") 
-- Could NOT find PhysFS (missing:  PHYSFS_LIBRARY PHYSFS_INCLUDE_DIR) 
-- Could NOT find PHYSFS (missing:  PHYSFS_LIBRARY PHYSFS_INCLUDE_DIR) 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/elias/Librerías/allegro-5.0.11/build_msw

I don't mind about DUMB or PhysFS as I don't plan in using these (yet), but I really want vorbis/ogg support as I don't want to use over 40 MB .wav files just for music.

And out of curiosity, I tried compiling the code that cmake was trying to test, which was this one (located at addons/acodec/CMakeLists.txt):

#include <vorbis/vorbisfile.h>
int main(void)
{
    OggVorbis_File f;
    ov_callbacks callback;
    vorbis_info *v = 0;
    (void)v;
    ov_info(&f, -1);
    callback = OV_CALLBACKS_NOCLOSE;
    return 0;
}

It compiles without errors using i686-w64-mingw32-gcc. I don't know why cmake says it is unable to compile that code... a bug maybe? I'm using Ubuntu 14.04 and CMake 3.1.3.

EDIT: I used the old mingw32 instead (i586-mingw32msvc-gcc) and I recompiled libvorbis and libogg with it. CMAKE now detects Vorbis correctly, but another problem comes out: I made a simple test program for loading and playing .ogg files, but it does not play them at all (.wav files do play correctly).

I don't have problems compiling for Linux, only with mingw32 and mingw-w64.

Any help would be highly appreciated

Yep, -DWANT_ACODEC_DYNAMIC_LOAD=off did it. However, only worked for mingw32 because mingw-w64 gave me lots of undefined references and errors while I was building the library.

I'm probably going to stick with mingw32 for cross-compilation... it even accepted -static as a parameter. It may be an old compiler but works better for what I was trying to do.

Thanks