libfishsound: Building against libfishsound

# Building against libfishsound

## Using GNU autoconf

If you are using GNU autoconf, you do not need to call pkg-config directly. Use the following macro to determine if libfishsound is available:

     PKG_CHECK_MODULES(FISHSOUND, fishsound >= 0.6.0,
                       HAVE_FISHSOUND="yes", HAVE_FISHSOUND="no")
     if test "x$HAVE_FISHSOUND" = "xyes" ; then
       AC_SUBST(FISHSOUND_CFLAGS)
       AC_SUBST(FISHSOUND_LIBS)
     fi

(Note that if your application requires FLAC support, you should check for a version of fishsound >= 0.9.0).

If libfishsound is found, HAVE_FISHSOUND will be set to "yes", and the autoconf variables FISHSOUND_CFLAGS and FISHSOUND_LIBS will be set appropriately.

## Determining compiler options with pkg-config

If you are not using GNU autoconf in your project, you can use the pkg-config tool directly to determine the correct compiler options.

     FISHSOUND_CFLAGS=`pkg-config --cflags fishsound`

     FISHSOUND_LIBS=`pkg-config --libs fishsound`