if test x"$PKG_CONFIG" != x; then
AC_MSG_CHECKING([pkg-config database for $1-2.0])
_PKG_CONFIG([lib$1_cflags], [cflags], [$1-2.0])
if test x"$PKG_CONFIG" != x; then
AC_MSG_CHECKING([pkg-config database for $1-2.0])
_PKG_CONFIG([lib$1_cflags], [cflags], [$1-2.0])