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# $Id$
# (c) 2002 Martin Preuss<martin@libchipcard.de>
# This function checks for libusb
AC_DEFUN([AC_LIBUSB], [
dnl searches for libusb
dnl Arguments: none
dnl Returns: libusb_dir
dnl libusb_libs
dnl libusb_includes
dnl have_libusb
AC_MSG_CHECKING(if libusb support desired)
AC_ARG_ENABLE(libusb,
[ --enable-libusb enable libusb support (default=yes)],
enable_libusb="$enableval",
enable_libusb="yes")
AC_MSG_RESULT($enable_libusb)
have_libusb="no"
libusb_dir=""
libusb_libs=""
libusb_includes=""
if test "$enable_libusb" != "no"; then
AC_MSG_CHECKING(for libusb)
AC_ARG_WITH(libusb-dir, [ --with-libusb-dir=DIR
uses libusb from given dir],
[lcc_dir="$withval"],
[lcc_dir="${prefix} \
/usr/local \
/usr \
/"])
for li in $lcc_dir; do
if test -x "$li/bin/libusb-config"; then
libusb_dir="$li";
break
fi
done
if test -z "$libusb_dir"; then
AC_MSG_RESULT([not found ])
else
AC_MSG_RESULT($libusb_dir)
AC_MSG_CHECKING(for USB libs)
libusb_libs="`$libusb_dir/bin/libusb-config --libs`"
AC_MSG_RESULT($libusb_libs)
AC_MSG_CHECKING(for USB includes)
libusb_includes="`$libusb_dir/bin/libusb-config --cflags`"
if test -z "$libusb_includes"; then
AC_MSG_RESULT([<none needed>])
else
AC_MSG_RESULT($libusb_includes)
fi
have_libusb="yes"
fi
dnl end of "if enable-libusb"
fi
AC_SUBST(libusb_dir)
AC_SUBST(libusb_libs)
AC_SUBST(libusb_includes)
])
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