Dboard base class that is no longer also the xcvr.

The xcvr base inherits from this (as does rx and tx base).

Added m4 macro to check for compiler flags.
The configure checks flags and headers.

Merged the register subdev static methods into one method
that associates a dboard id with a dboard constructor.
The manager code is responsible for checking this association
and creating the correct subdev instances.

1 files changed, 84 insertions, 0 deletions

diff --git a/config/ax_cxx_check_flag.m4 b/config/ax_cxx_check_flag.m4
new file mode 100644
index 000000000..2de9f273f
--- /dev/null
+++ b/config/ax_cxx_check_flag.m4
@@ -0,0 +1,84 @@
+# ===========================================================================
+#        http://www.nongnu.org/autoconf-archive/ax_cxx_check_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_CHECK_FLAG(FLAG-TO-CHECK,[PROLOGUE],[BODY],[ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
+#
+# DESCRIPTION
+#
+#   This macro tests if the C++ compiler supports the flag FLAG-TO-CHECK. If
+#   successfull execute ACTION-IF-SUCCESS otherwise ACTION-IF-FAILURE.
+#   PROLOGUE and BODY are optional and should be used as in AC_LANG_PROGRAM
+#   macro.
+#
+#   This code is inspired from KDE_CHECK_COMPILER_FLAG macro. Thanks to
+#   Bogdan Drozdowski <bogdandr@op.pl> for testing and bug fixes.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+AC_DEFUN([AX_CXX_CHECK_FLAG],[
+  AC_PREREQ([2.61])
+  AC_REQUIRE([AC_PROG_CXX])
+  AC_REQUIRE([AC_PROG_SED])
+
+  flag=`echo "$1" | $SED 'y% .=/+-(){}<>:*,%_______________%'`
+
+  AC_CACHE_CHECK([whether the C++ compiler accepts the $1 flag],
+    [ax_cv_cxx_check_flag_$flag],[
+
+    AC_LANG_PUSH([C++])
+
+    save_CXXFLAGS="$CXXFLAGS"
+    CXXFLAGS="$CXXFLAGS $1"
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM([$2],[$3])
+    ],[
+      eval "ax_cv_cxx_check_flag_$flag=yes"
+    ],[
+      eval "ax_cv_cxx_check_flag_$flag=no"
+    ])
+
+    CXXFLAGS="$save_CXXFLAGS"
+
+    AC_LANG_POP
+
+  ])
+
+  AS_IF([eval "test \"`echo '$ax_cv_cxx_check_flag_'$flag`\" = yes"],[
+    :
+    $4
+  ],[
+    :
+    $5
+  ])
+])