File: libcnotify.m4

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libbfio 20140105-2
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dnl Functions for libcnotify
dnl
dnl Version: 20130406

dnl Function to detect if libcnotify is available
dnl ac_libcnotify_dummy is used to prevent AC_CHECK_LIB adding unnecessary -l<library> arguments
AC_DEFUN([AX_LIBCNOTIFY_CHECK_LIB],
 [dnl Check if parameters were provided
 AS_IF(
  [test "x$ac_cv_with_libcnotify" != x && test "x$ac_cv_with_libcnotify" != xno && test "x$ac_cv_with_libcnotify" != xauto-detect],
  [AS_IF(
   [test -d "$ac_cv_with_libcnotify"],
   [CFLAGS="$CFLAGS -I${ac_cv_with_libcnotify}/include"
   LDFLAGS="$LDFLAGS -L${ac_cv_with_libcnotify}/lib"],
   [AC_MSG_WARN([no such directory: $ac_cv_with_libcnotify])
   ])
  ])

 AS_IF(
  [test "x$ac_cv_with_libcnotify" = xno],
  [ac_cv_libcnotify=no],
  [dnl Check for a pkg-config file
  AS_IF(
   [test "x$cross_compiling" != "xyes" && test "x$PKGCONFIG" != "x"],
   [PKG_CHECK_MODULES(
    [libcnotify],
    [libcnotify >= 20120425],
    [ac_cv_libcnotify=yes],
    [ac_cv_libcnotify=no])
   ])

  AS_IF(
   [test "x$ac_cv_libcnotify" = xyes],
   [ac_cv_libcnotify_CPPFLAGS="$pkg_cv_libcnotify_CFLAGS"
   ac_cv_libcnotify_LIBADD="$pkg_cv_libcnotify_LIBS"],
   [dnl Check for headers
   AC_CHECK_HEADERS([libcnotify.h])

   AS_IF(
    [test "x$ac_cv_header_libcnotify_h" = xno],
    [ac_cv_libcnotify=no],
    [dnl Check for the individual functions
    ac_cv_libcnotify=yes

    AC_CHECK_LIB(
     cnotify,
     libcnotify_get_version,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])

    dnl Print functions
    AC_CHECK_LIB(
     cnotify,
     libcnotify_printf,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])
    AC_CHECK_LIB(
     cnotify,
     libcnotify_print_data,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])
    AC_CHECK_LIB(
     cnotify,
     libcnotify_print_error_backtrace,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])

    dnl Stream functions
    AC_CHECK_LIB(
     cnotify,
     libcnotify_stream_set,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])
    AC_CHECK_LIB(
     cnotify,
     libcnotify_stream_open,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])
    AC_CHECK_LIB(
     cnotify,
     libcnotify_stream_close,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])

    dnl Verbose functions
    AC_CHECK_LIB(
     cnotify,
     libcnotify_verbose_set,
     [ac_cv_libcnotify_dummy=yes],
     [ac_cv_libcnotify=no])

    ac_cv_libcnotify_LIBADD="-lcnotify"
    ])
   ])
  ])

 AS_IF(
  [test "x$ac_cv_libcnotify" = xyes],
  [AC_DEFINE(
   [HAVE_LIBCNOTIFY],
   [1],
   [Define to 1 if you have the `cnotify' library (-lcnotify).])
  ])

 AS_IF(
  [test "x$ac_cv_libcnotify" = xyes],
  [AC_SUBST(
   [HAVE_LIBCNOTIFY],
   [1]) ],
  [AC_SUBST(
   [HAVE_LIBCNOTIFY],
   [0])
  ])
 ])

dnl Function to detect if libcnotify dependencies are available
AC_DEFUN([AX_LIBCNOTIFY_CHECK_LOCAL],
 [dnl Headers included in libcnotify/libcnotify_print.c
 AC_CHECK_HEADERS([stdarg.h varargs.h])

 AS_IF(
  [test "x$ac_cv_header_stdarg_h" != xyes && test "x$ac_cv_header_varargs_h" != xyes],
  [AC_MSG_FAILURE(
   [Missing headers: stdarg.h and varargs.h],
   [1])
  ])

 dnl Headers included in libcnotify/libcnotify_stream.c
 AC_CHECK_HEADERS([errno.h])

 ac_cv_libcnotify_CPPFLAGS="-I../libcnotify";
 ac_cv_libcnotify_LIBADD="../libcnotify/libcnotify.la";

 ac_cv_libcnotify=local
 ])

dnl Function to detect how to enable libcnotify
AC_DEFUN([AX_LIBCNOTIFY_CHECK_ENABLE],
 [AX_COMMON_ARG_WITH(
  [libcnotify],
  [libcnotify],
  [search for libcnotify in includedir and libdir or in the specified DIR, or no if to use local version],
  [auto-detect],
  [DIR])

 dnl Check for a shared library version
 AX_LIBCNOTIFY_CHECK_LIB

 dnl Check if the dependencies for the local library version
 AS_IF(
  [test "x$ac_cv_libcnotify" != xyes],
  [AX_LIBCNOTIFY_CHECK_LOCAL

  AC_DEFINE(
   [HAVE_LOCAL_LIBCNOTIFY],
   [1],
   [Define to 1 if the local version of libcnotify is used.])
  AC_SUBST(
   [HAVE_LOCAL_LIBCNOTIFY],
   [1])
  ])

 AM_CONDITIONAL(
  [HAVE_LOCAL_LIBCNOTIFY],
  [test "x$ac_cv_libcnotify" = xlocal])
 AS_IF(
  [test "x$ac_cv_libcnotify_CPPFLAGS" != "x"],
  [AC_SUBST(
   [LIBCNOTIFY_CPPFLAGS],
   [$ac_cv_libcnotify_CPPFLAGS])
  ])
 AS_IF(
  [test "x$ac_cv_libcnotify_LIBADD" != "x"],
  [AC_SUBST(
   [LIBCNOTIFY_LIBADD],
   [$ac_cv_libcnotify_LIBADD])
  ])

 AS_IF(
  [test "x$ac_cv_libcnotify" = xyes],
  [AC_SUBST(
   [ax_libcnotify_pc_libs_private],
   [-lcnotify])
  ])

 AS_IF(
  [test "x$ac_cv_libcnotify" = xyes],
  [AC_SUBST(
   [ax_libcnotify_spec_requires],
   [libcnotify])
  AC_SUBST(
   [ax_libcnotify_spec_build_requires],
   [libcnotify-devel])
  ])
 ])