ref: 579fae4ab7d37423aee4d9cdf7a29f9d96c2b764
dir: /m4/sndfile.m4/
dnl SOX_PATH_SNDFILE
dnl Based off of shout.m4 from xiph package.
dnl cbagwell@users.sourceforge.net 1-3-2007
dnl
dnl Original Authors:
dnl Jack Moffitt <jack@icecast.org> 08-06-2001
dnl Rewritten for libshout 2
dnl Brendan Cully <brendan@xiph.org> 20030612
dnl
# SOX_PATH_SNDFILE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
# Test for libsndfile, and define LIBSNDFILE_CFLAGS and LIBSNDFILE_LIBS
AC_DEFUN([SOX_PATH_SNDFILE],
[dnl
# Step 1: Use pkg-config if available
m4_ifdef([PKG_CHECK_MODULES],
[# PKG_CHECK_MODULES available
PKG_CHECK_MODULES(LIBSNDFILE, sndfile, have_sndfile="maybe",
have_sndfile="no")],
[# Step 2: use pkg-config manually if available
AC_PATH_PROG([PKGCONFIG], [pkg-config], [none])
if test "$PKGCONFIG" != "none" && `$PKGCONFIG --exists sndfile`
then
LIBSNDFILE_CFLAGS=`$PKGCONFIG --cflags sndfile`" $ac_save_SNDFILE_CFLAGS $LIBSNDFILE_CFLAGS"
LIBSNDFILE_LIBS=`$PKGCONFIG --libs sndfile`" $ac_save_SNDFILE_LIBS $LIBSNDFILE_LIBS"
have_sndfile="maybe"
else
have_sndfile="no"
fi
])
# Step 3: Even if pkg-config says its not installed, user may have
# manually installed libraries with no -kg-config support.
if test "$have_sndfile" = "no"
then
# As a last resort, just hope that header and ilbrary can
# be found in default paths and that it doesn't need
# to link against any other libraries.
LIBSNDFILE_LIBS="-lsndfile $LIBSNDFILE_LIBS"
have_sndfile="maybe"
fi
# Even if pkg-config or similar told us how to find library,
# do a safety check.
if test "$have_sndfile" != "no"
then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $LIBSNDFILE_CFLAGS"
LIBS="$LIBS $LIBSNDFILE_LIBS"
AC_CHECK_HEADER([sndfile.h], [
AC_DEFINE([HAVE_SNDFILE_H], 1, [Define if you have <sndfile.h>])
AC_CHECK_FUNC([sf_open_virtual], [
ifelse([$1], , :, [$1])
have_sndfile="yes"
])
])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
if test "$have_sndfile" != "yes"
then
ifelse([$2], , :, [$2])
fi
])dnl SOX_PATH_SNDFILE