ogg.m4 1.64 KB
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# Configure paths for libogg
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# updated by Karl Heyes 10-Jun-2003
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# Jack Moffitt <jack@icecast.org> 10-21-2000
# Shamelessly stolen from Owen Taylor and Manish Singh

dnl XIPH_PATH_OGG([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
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dnl Test for libogg, and define OGG_CFLAGS OGG_LDFLAGS and OGG_LIBS
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dnl
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AC_DEFUN([XIPH_PATH_OGG],
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[dnl 
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AC_ARG_VAR([OGG_PREFIX],[path to ogg installation])
AC_ARG_WITH(ogg,
    [AC_HELP_STRING([--with-ogg=PREFIX],
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        [Prefix where libogg is installed (optional)])],
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    ogg_prefix="$withval",
    ogg_prefix="$OGG_PREFIX"
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    )
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if test "x$ogg_prefix" = "x"; then
    if test "x$prefix" = "xNONE"; then
        ogg_prefix=/usr/local
    else
        ogg_prefix="$prefix"
    fi
fi

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XIPH_GCC_WARNING([-I$ogg_prefix/include],,
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    [ OGG_CFLAGS="-I$ogg_prefix/include"
      OGG_LDFLAGS="-L$ogg_prefix/lib"
      ])
AC_CACHE_CHECK([for libogg], xt_cv_lib_ogg,
[dnl
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OGG_LIBS="-logg"

#
# check if the installed Ogg is sufficiently new.
#
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
ac_save_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS $OGG_CFLAGS"
LIBS="$LIBS $OGG_LIBS"
LDFLAGS="$LDFLAGS $OGG_LDFLAGS"
AC_TRY_LINK_FUNC(ogg_sync_init,
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    [ xt_cv_lib_ogg=ok ],
    [ AC_TRY_LINK([#include <ogg/ogg.h>],, 
        [ xt_cv_lib_ogg="pre v1.0, needs updating" ],
        [ xt_cv_lib_ogg="not found" ])
    ])
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CFLAGS="$ac_save_CFLAGS"
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LDFLAGS="$ac_save_LDFLAGS"
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LIBS="$ac_save_LIBS"
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])
if test "x$xt_cv_lib_ogg" = "xok"; then
    ifelse([$1],,,[$1])
    AC_DEFINE([HAVE_OGG], [1], [Define if you have libogg installed])
else
    OGG_LIBS=""
    OGG_CFLAGS=""
    OGG_LDFLAGS=""
    ifelse([$2],,,[$2])
fi
AC_SUBST(OGG_LIBS)
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AC_SUBST(OGG_CFLAGS)
AC_SUBST(OGG_LDFLAGS)
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])