[libsigcplusplus/libsigc++-2-8] Build: Fix silent builds

[Kjell Ahlstedt <kjellahl src gnome org>]

commit c9f141ece7242ac747eb14ca2bb74bbf143c7612
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Mon Jul 18 18:46:03 2016 +0200

    Build: Fix silent builds
    
    * configure.ac: Pass yes to AM_SILENT_RULES, thus enabling silent builds.
    Replace MM_AX_CXX_COMPILE_STDCXX_11 by MM_AX_CXX_COMPILE_STDCXX (not necessary
    for silent builds).
    * docs/reference/Doxyfile.in: Set QUIET=YES.
    Update for doxygen 1.8.11 (not necessary for silent builds).
    Bug #768797

 configure.ac               |    8 +++++---
 docs/reference/Doxyfile.in |   11 ++++++++---
 2 files changed, 13 insertions(+), 6 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4ca1da9..1fc668c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,16 +26,18 @@ AC_CONFIG_MACRO_DIR([build])
 AC_CONFIG_HEADERS([config.h sigc++config.h])
 
 AM_INIT_AUTOMAKE([1.9 -Wno-portability check-news dist-bzip2 no-define nostdinc tar-ustar])
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
+# Support silent build rules.
+# Disable by either passing --disable-silent-rules to configure or passing V=1 to make.
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AM_MAINTAINER_MODE
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
-MM_PREREQ([0.9.8])
+MM_PREREQ([0.9.10])
 MM_INIT_MODULE([sigc++-2.0])
 MM_CONFIG_DOCTOOL_DIR([docs])
 
 AC_PROG_CXX
-MM_AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
+MM_AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
 
 AC_DISABLE_STATIC
 LT_INIT([win32-dll])
diff --git a/docs/reference/Doxyfile.in b/docs/reference/Doxyfile.in
index 3909fac..c94b485 100644
--- a/docs/reference/Doxyfile.in
+++ b/docs/reference/Doxyfile.in
@@ -1,4 +1,4 @@
-# Doxyfile 1.8.9.1
+# Doxyfile 1.8.11
 # @configure_input@
 
 #---------------------------------------------------------------------------
@@ -45,6 +45,7 @@ CPP_CLI_SUPPORT        = NO
 SIP_SUPPORT            = NO
 IDL_PROPERTY_SUPPORT   = YES
 DISTRIBUTE_GROUP_DOC   = NO
+GROUP_NESTED_COMPOUNDS = NO
 SUBGROUPING            = YES
 INLINE_GROUPED_CLASSES = NO
 INLINE_SIMPLE_STRUCTS  = NO
@@ -93,11 +94,12 @@ CITE_BIB_FILES         =
 #---------------------------------------------------------------------------
 # Configuration options related to warning and progress messages
 #---------------------------------------------------------------------------
-QUIET                  = NO
+QUIET                  = YES
 WARNINGS               = YES
 WARN_IF_UNDOCUMENTED   = YES
 WARN_IF_DOC_ERROR      = YES
 WARN_NO_PARAMDOC       = NO
+WARN_AS_ERROR          = NO
 WARN_FORMAT            = "$file:$line: $text"
 WARN_LOGFILE           = reference/doxygen.log
 #---------------------------------------------------------------------------
@@ -140,6 +142,8 @@ REFERENCES_LINK_SOURCE = YES
 SOURCE_TOOLTIPS        = YES
 USE_HTAGS              = NO
 VERBATIM_HEADERS       = NO
+CLANG_ASSISTED_PARSING = NO
+CLANG_OPTIONS          =
 #---------------------------------------------------------------------------
 # Configuration options related to the alphabetical class index
 #---------------------------------------------------------------------------
@@ -224,6 +228,7 @@ LATEX_BATCHMODE        = NO
 LATEX_HIDE_INDICES     = NO
 LATEX_SOURCE_CODE      = NO
 LATEX_BIB_STYLE        = plain
+LATEX_TIMESTAMP        = NO
 #---------------------------------------------------------------------------
 # Configuration options related to the RTF output
 #---------------------------------------------------------------------------
@@ -281,7 +286,7 @@ PREDEFINED             = __cplusplus \
                          SIGC_CONFIGURE \
                          SIGC_GCC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD \
                          SIGC_MSVC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD \
-                         SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD"
+                         SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
 EXPAND_AS_DEFINED      = SIGC_WORKAROUND_OPERATOR_PARENTHESES \
                          SIGCXX_MAJOR_VERSION \
                          SIGCXX_MINOR_VERSION \