ax_group_pkg.m4

dnl __BEGIN_LICENSE__
dnl Copyright (C) 2006-2010 United States Government as represented by
dnl the Administrator of the National Aeronautics and Space Administration.
dnl All Rights Reserved.
dnl __END_LICENSE__


m4_ifdef([_AX_FIXUPS], [], [m4_include([m4/fixups.m4])])

dnl AX_GROUP_PKG(<pkg> [, <dep1> .. <depn>])
dnl A stripped-down AX_PKG that copies the vars from one pkg to another without
dnl re-checking. As long as all deps were found, pkg will be marked found,
dnl too. note: no commas after the first one separating pkg from dep1!
dnl
dnl Also, to help other macros: if there are no deps, pkg is marked NOT FOUND.

AC_DEFUN([AX_GROUP_PKG],
[AC_MSG_CHECKING([for package $1])
  m4_pushdef([pkg], my_toupper([$1]))
  AS_VAR_PUSHDEF([have_pkg], [HAVE_PKG_]pkg)
  AS_VAR_PUSHDEF([pkg_c], [PKG_]pkg[_CPPFLAGS])
  AS_VAR_PUSHDEF([pkg_l], [PKG_]pkg[_LIBS])
  AS_VAR_PUSHDEF([missing], [ax_group_pkg_missing_deps])
  AS_VAR_PUSHDEF([bool], [ax_group_pkg_have_pkg_bool])

  m4_divert_once([INIT_PREPARE], [dnl
  AC_ARG_WITH(my_tolower([$1]),
    AS_HELP_STRING([--with-]my_tolower([$1]), [look for the $1 package]),
    [ have_pkg=$withval ]
  )])

  missing=""
  m4_if([$2], [], [have_pkg=[no_deps]], AX_LOAD_DEPS(pkg, my_toupper([$2]), missing))

  AS_IF([test x"$have_pkg" = "xno"],      [AS_VAR_SET([bool], 0); AC_MSG_RESULT([no (disabled by user)])],
    [AS_IF([test x"$have_pkg" = "xno_deps"], [AS_VAR_SET([bool], 0); AC_MSG_RESULT([no])],
      [AS_IF([test -z "$missing"],             [AS_VAR_SET([bool], 1); AC_MSG_RESULT([yes])],
        [bool=0; AC_MSG_RESULT([no ([missing] $missing)]) ])])])

  AS_IF( [test x"$bool" = "x1"], [have_pkg=yes], [pkg_c=""; pkg_l=""; have_pkg=no])

  AC_DEFINE_UNQUOTED(have_pkg, $bool, [Define to 1 if the pkg package is available])
  AC_SUBST(pkg_c)
  AC_SUBST(pkg_l)
  AC_SUBST(have_pkg)

  AS_VAR_POPDEF([bool])
  AS_VAR_POPDEF([missing])
  AS_VAR_POPDEF([pkg_l])
  AS_VAR_POPDEF([pkg_c])
  AS_VAR_POPDEF([have_pkg])
  m4_popdef([pkg])
])

AC_DEFUN([AX_DISABLE_PKG], [AX_GROUP_PKG([$1])])