[Libreoffice-commits] libvisio.git: 4 commits - configure.ac .gitignore m4/ax_cxx_compile_stdcxx_11.m4 m4/ax_cxx_compile_stdcxx.m4 m4/.gitignore src/lib

David Tardon dtardon at redhat.com
Fri Apr 7 14:03:40 UTC 2017


 .gitignore                     |    1 
 configure.ac                   |    3 
 m4/.gitignore                  |    2 
 m4/ax_cxx_compile_stdcxx.m4    |  562 +++++++++++++++++++++++++++++++++++++++++
 m4/ax_cxx_compile_stdcxx_11.m4 |   39 ++
 src/lib/VDXParser.cpp          |    5 
 src/lib/VSDXMLHelper.cpp       |    5 
 src/lib/VSDXMLHelper.h         |    3 
 src/lib/VSDXMLParserBase.cpp   |    9 
 src/lib/VSDXMetaData.cpp       |    4 
 src/lib/VSDXParser.cpp         |   11 
 src/lib/VSDXTheme.cpp          |    4 
 src/lib/VisioDocument.cpp      |    5 
 src/lib/libvisio_utils.h       |    4 
 src/lib/libvisio_xml.cpp       |    8 
 src/lib/libvisio_xml.h         |   10 
 16 files changed, 638 insertions(+), 37 deletions(-)

New commits:
commit ad74fbdf0dadd419d02078f48e3a19cd8dd7a8f5
Author: David Tardon <dtardon at redhat.com>
Date:   Fri Apr 7 15:58:47 2017 +0200

    drop unused includes
    
    Change-Id: I4d75bfb583a7a5a7698b672b31ed139c439dc8f2

diff --git a/src/lib/VDXParser.cpp b/src/lib/VDXParser.cpp
index e2f025f..276b36f 100644
--- a/src/lib/VDXParser.cpp
+++ b/src/lib/VDXParser.cpp
@@ -12,7 +12,6 @@
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
-#include <boost/algorithm/string.hpp>
 #include "VDXParser.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
diff --git a/src/lib/VSDXMLHelper.cpp b/src/lib/VSDXMLHelper.cpp
index e212f14..bacc2c6 100644
--- a/src/lib/VSDXMLHelper.cpp
+++ b/src/lib/VSDXMLHelper.cpp
@@ -16,7 +16,6 @@
 #include <istream>
 #include <vector>
 #include <boost/algorithm/string.hpp>
-#include <boost/lexical_cast.hpp>
 #include <librevenge-stream/librevenge-stream.h>
 #include "VSDXMLHelper.h"
 #include "libvisio_utils.h"
diff --git a/src/lib/VSDXMLParserBase.cpp b/src/lib/VSDXMLParserBase.cpp
index 4d534bb..d5a1005 100644
--- a/src/lib/VSDXMLParserBase.cpp
+++ b/src/lib/VSDXMLParserBase.cpp
@@ -12,7 +12,6 @@
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
-#include <boost/algorithm/string.hpp>
 #include <boost/spirit/include/classic.hpp>
 #include "VSDXMLParserBase.h"
 #include "libvisio_utils.h"
diff --git a/src/lib/VSDXParser.cpp b/src/lib/VSDXParser.cpp
index 817be96..13fd050 100644
--- a/src/lib/VSDXParser.cpp
+++ b/src/lib/VSDXParser.cpp
@@ -12,7 +12,6 @@
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
-#include <boost/algorithm/string.hpp>
 #include "VSDXParser.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
commit c41531b797af11b52dac75a88445090a8ec86339
Author: David Tardon <dtardon at redhat.com>
Date:   Fri Apr 7 15:54:10 2017 +0200

    boost::shared_ptr -> std::shared_ptr
    
    Change-Id: I873a476e8428c8c3ca0a45d721d5ba3b300a33b4

diff --git a/configure.ac b/configure.ac
index bb227a1..93bc784 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,7 +86,6 @@ AC_CHECK_HEADERS(
 	boost/algorithm/string.hpp \
 	boost/lexical_cast.hpp \
 	boost/optional.hpp \
-	boost/shared_ptr.hpp \
 	boost/spirit/include/classic.hpp,
 	[],
 	[AC_MSG_ERROR(Required boost headers not found. install boost >= 1.36)],
diff --git a/src/lib/VDXParser.cpp b/src/lib/VDXParser.cpp
index e81ef0c..e2f025f 100644
--- a/src/lib/VDXParser.cpp
+++ b/src/lib/VDXParser.cpp
@@ -7,12 +7,12 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include <memory>
 #include <string.h>
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
 #include <boost/algorithm/string.hpp>
-#include <boost/shared_ptr.hpp>
 #include "VDXParser.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
@@ -75,7 +75,7 @@ bool libvisio::VDXParser::processXmlDocument(librevenge::RVNGInputStream *input)
   if (!input)
     return false;
 
-  const boost::shared_ptr<xmlTextReader> reader(
+  const std::shared_ptr<xmlTextReader> reader(
     xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET|XML_PARSE_RECOVER),
     xmlFreeTextReader);
   if (!reader)
diff --git a/src/lib/VSDXMLHelper.cpp b/src/lib/VSDXMLHelper.cpp
index 5bd40f0..e212f14 100644
--- a/src/lib/VSDXMLHelper.cpp
+++ b/src/lib/VSDXMLHelper.cpp
@@ -11,12 +11,12 @@
 #define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE 1
 #endif
 
+#include <memory>
 #include <sstream>
 #include <istream>
 #include <vector>
 #include <boost/algorithm/string.hpp>
 #include <boost/lexical_cast.hpp>
-#include <boost/shared_ptr.hpp>
 #include <librevenge-stream/librevenge-stream.h>
 #include "VSDXMLHelper.h"
 #include "libvisio_utils.h"
@@ -95,7 +95,7 @@ libvisio::VSDXRelationships::VSDXRelationships(librevenge::RVNGInputStream *inpu
 {
   if (input)
   {
-    const boost::shared_ptr<xmlTextReader> reader(
+    const std::shared_ptr<xmlTextReader> reader(
       xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET|XML_PARSE_RECOVER),
       xmlFreeTextReader);
     if (reader)
diff --git a/src/lib/VSDXMLHelper.h b/src/lib/VSDXMLHelper.h
index 0a46a6a..948db65 100644
--- a/src/lib/VSDXMLHelper.h
+++ b/src/lib/VSDXMLHelper.h
@@ -11,8 +11,9 @@
 #define __VSDXMLHELPER_H__
 
 #include <map>
+#include <memory>
 #include <string>
-#include <boost/shared_ptr.hpp>
+
 #include <librevenge-stream/librevenge-stream.h>
 #include <libxml/xmlreader.h>
 #include "VSDTypes.h"
diff --git a/src/lib/VSDXMLParserBase.cpp b/src/lib/VSDXMLParserBase.cpp
index e06e3af..4d534bb 100644
--- a/src/lib/VSDXMLParserBase.cpp
+++ b/src/lib/VSDXMLParserBase.cpp
@@ -7,12 +7,12 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include <memory>
 #include <string.h>
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
 #include <boost/algorithm/string.hpp>
-#include <boost/shared_ptr.hpp>
 #include <boost/spirit/include/classic.hpp>
 #include "VSDXMLParserBase.h"
 #include "libvisio_utils.h"
@@ -22,7 +22,7 @@
 #include "VSDXMLHelper.h"
 #include "VSDXMLTokenMap.h"
 
-using boost::shared_ptr;
+using std::shared_ptr;
 
 libvisio::VSDXMLParserBase::VSDXMLParserBase()
   : m_collector(), m_stencils(), m_currentStencil(0), m_shape(),
@@ -2216,7 +2216,7 @@ int libvisio::VSDXMLParserBase::readExtendedColourData(Colour &value, xmlTextRea
 unsigned libvisio::VSDXMLParserBase::getIX(xmlTextReaderPtr reader)
 {
   unsigned ix = MINUS_ONE;
-  const boost::shared_ptr<xmlChar> ixString(xmlTextReaderGetAttribute(reader, BAD_CAST("IX")), xmlFree);
+  const std::shared_ptr<xmlChar> ixString(xmlTextReaderGetAttribute(reader, BAD_CAST("IX")), xmlFree);
   if (ixString)
     ix = (unsigned)xmlStringToLong(ixString.get());
   return ix;
@@ -2227,7 +2227,7 @@ void libvisio::VSDXMLParserBase::readTriggerId(unsigned &id, xmlTextReaderPtr re
   using namespace ::boost::spirit::classic;
 
   unsigned triggerId = MINUS_ONE;
-  const boost::shared_ptr<xmlChar> triggerString(xmlTextReaderGetAttribute(reader, BAD_CAST("F")), xmlFree);
+  const std::shared_ptr<xmlChar> triggerString(xmlTextReaderGetAttribute(reader, BAD_CAST("F")), xmlFree);
   if (triggerString)
   {
     if (parse((const char *)triggerString.get(),
diff --git a/src/lib/VSDXMetaData.cpp b/src/lib/VSDXMetaData.cpp
index 2d9a45c..003b37d 100644
--- a/src/lib/VSDXMetaData.cpp
+++ b/src/lib/VSDXMetaData.cpp
@@ -11,8 +11,8 @@
 #include "VSDXMLTokenMap.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
+#include <memory>
 #include <string>
-#include <boost/shared_ptr.hpp>
 
 libvisio::VSDXMetaData::VSDXMetaData()
   : m_metaData()
@@ -119,7 +119,7 @@ bool libvisio::VSDXMetaData::parse(librevenge::RVNGInputStream *input)
 
   XMLErrorWatcher watcher;
 
-  const boost::shared_ptr<xmlTextReader> reader(
+  const std::shared_ptr<xmlTextReader> reader(
     xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET, &watcher),
     xmlFreeTextReader);
   if (!reader)
diff --git a/src/lib/VSDXParser.cpp b/src/lib/VSDXParser.cpp
index 36bda6a..817be96 100644
--- a/src/lib/VSDXParser.cpp
+++ b/src/lib/VSDXParser.cpp
@@ -7,12 +7,12 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include <memory>
 #include <string.h>
 #include <libxml/xmlIO.h>
 #include <libxml/xmlstring.h>
 #include <librevenge-stream/librevenge-stream.h>
 #include <boost/algorithm/string.hpp>
-#include <boost/shared_ptr.hpp>
 #include "VSDXParser.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
@@ -304,7 +304,7 @@ void libvisio::VSDXParser::processXmlDocument(librevenge::RVNGInputStream *input
 
   XMLErrorWatcher watcher;
 
-  const boost::shared_ptr<xmlTextReader> reader(
+  const std::shared_ptr<xmlTextReader> reader(
     xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET, &watcher),
     xmlFreeTextReader);
   if (!reader)
@@ -326,7 +326,7 @@ void libvisio::VSDXParser::processXmlDocument(librevenge::RVNGInputStream *input
       case XML_REL:
         if (XML_READER_TYPE_ELEMENT == tokenType)
         {
-          boost::shared_ptr<xmlChar> id(xmlTextReaderGetAttribute(reader.get(), BAD_CAST("r:id")), xmlFree);
+          std::shared_ptr<xmlChar> id(xmlTextReaderGetAttribute(reader.get(), BAD_CAST("r:id")), xmlFree);
           if (id)
           {
             const VSDXRelationship *rel = rels.getRelationshipById((char *)id.get());
@@ -1402,7 +1402,7 @@ void libvisio::VSDXParser::readTabRow(xmlTextReaderPtr reader)
       case XML_POSITION:
         if (XML_READER_TYPE_ELEMENT == tokenType)
         {
-          const boost::shared_ptr<xmlChar> stringValue(xmlTextReaderGetAttribute(reader, BAD_CAST("N")), xmlFree);
+          const std::shared_ptr<xmlChar> stringValue(xmlTextReaderGetAttribute(reader, BAD_CAST("N")), xmlFree);
           if (stringValue)
           {
             unsigned idx = xmlStringToLong(stringValue.get()+8);
@@ -1413,7 +1413,7 @@ void libvisio::VSDXParser::readTabRow(xmlTextReaderPtr reader)
       case XML_ALIGNMENT:
         if (XML_READER_TYPE_ELEMENT == tokenType)
         {
-          const boost::shared_ptr<xmlChar> stringValue(xmlTextReaderGetAttribute(reader, BAD_CAST("N")), xmlFree);
+          const std::shared_ptr<xmlChar> stringValue(xmlTextReaderGetAttribute(reader, BAD_CAST("N")), xmlFree);
           if (stringValue)
           {
             unsigned idx = xmlStringToLong(stringValue.get()+9);
diff --git a/src/lib/VSDXTheme.cpp b/src/lib/VSDXTheme.cpp
index a05484b..ccfb2ac 100644
--- a/src/lib/VSDXTheme.cpp
+++ b/src/lib/VSDXTheme.cpp
@@ -9,13 +9,13 @@
 
 #include "VSDXTheme.h"
 
-#include <boost/shared_ptr.hpp>
+#include <memory>
 
 #include "VSDXMLTokenMap.h"
 #include "libvisio_utils.h"
 #include "libvisio_xml.h"
 
-using boost::shared_ptr;
+using std::shared_ptr;
 
 libvisio::VSDXVariationClrScheme::VSDXVariationClrScheme()
   : m_varColor1()
diff --git a/src/lib/VisioDocument.cpp b/src/lib/VisioDocument.cpp
index b8099e5..ec8fcd7 100644
--- a/src/lib/VisioDocument.cpp
+++ b/src/lib/VisioDocument.cpp
@@ -7,8 +7,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include <memory>
 #include <string>
-#include <boost/shared_ptr.hpp>
+
 #include <librevenge/librevenge.h>
 #include <libvisio/libvisio.h>
 #include "libvisio_utils.h"
@@ -250,7 +251,7 @@ static bool isXmlVisioDocument(librevenge::RVNGInputStream *input)
   try
   {
     input->seek(0, librevenge::RVNG_SEEK_SET);
-    const boost::shared_ptr<xmlTextReader> reader(
+    const std::shared_ptr<xmlTextReader> reader(
       libvisio::xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET|XML_PARSE_RECOVER),
       xmlFreeTextReader);
     if (!reader)
diff --git a/src/lib/libvisio_utils.h b/src/lib/libvisio_utils.h
index ea63867..7857068 100644
--- a/src/lib/libvisio_utils.h
+++ b/src/lib/libvisio_utils.h
@@ -10,7 +10,7 @@
 #ifndef __LIBVISIO_UTILS_H__
 #define __LIBVISIO_UTILS_H__
 
-#include <boost/shared_ptr.hpp>
+#include <memory>
 
 #include "VSDTypes.h"
 
@@ -75,7 +75,7 @@ typedef unsigned __int64 uint64_t;
 namespace libvisio
 {
 
-typedef boost::shared_ptr<librevenge::RVNGInputStream> RVNGInputStreamPtr_t;
+typedef std::shared_ptr<librevenge::RVNGInputStream> RVNGInputStreamPtr_t;
 
 uint8_t readU8(librevenge::RVNGInputStream *input);
 uint16_t readU16(librevenge::RVNGInputStream *input);
diff --git a/src/lib/libvisio_xml.cpp b/src/lib/libvisio_xml.cpp
index 9941ee9..18214b2 100644
--- a/src/lib/libvisio_xml.cpp
+++ b/src/lib/libvisio_xml.cpp
@@ -131,7 +131,7 @@ Colour xmlStringToColour(const xmlChar *s)
   return Colour((val & 0xff0000) >> 16, (val & 0xff00) >> 8, val & 0xff, 0);
 }
 
-Colour xmlStringToColour(const boost::shared_ptr<xmlChar> &s)
+Colour xmlStringToColour(const std::shared_ptr<xmlChar> &s)
 {
   return xmlStringToColour(s.get());
 }
@@ -155,7 +155,7 @@ long xmlStringToLong(const xmlChar *s)
   return 0;
 }
 
-long xmlStringToLong(const boost::shared_ptr<xmlChar> &s)
+long xmlStringToLong(const std::shared_ptr<xmlChar> &s)
 {
   return xmlStringToLong(s.get());
 }
@@ -173,7 +173,7 @@ catch (const boost::bad_lexical_cast &)
   throw XmlParserException();
 }
 
-double xmlStringToDouble(const boost::shared_ptr<xmlChar> &s)
+double xmlStringToDouble(const std::shared_ptr<xmlChar> &s)
 {
   return xmlStringToDouble(s.get());
 }
@@ -197,7 +197,7 @@ bool xmlStringToBool(const xmlChar *s)
 
 }
 
-bool xmlStringToBool(const boost::shared_ptr<xmlChar> &s)
+bool xmlStringToBool(const std::shared_ptr<xmlChar> &s)
 {
   return xmlStringToBool(s.get());
 }
diff --git a/src/lib/libvisio_xml.h b/src/lib/libvisio_xml.h
index 298b739..5875a73 100644
--- a/src/lib/libvisio_xml.h
+++ b/src/lib/libvisio_xml.h
@@ -10,7 +10,7 @@
 #ifndef __LIBVISIO_XML_H__
 #define __LIBVISIO_XML_H__
 
-#include <boost/shared_ptr.hpp>
+#include <memory>
 
 #include <librevenge-stream/librevenge-stream.h>
 
@@ -47,16 +47,16 @@ xmlTextReaderPtr xmlReaderForStream(librevenge::RVNGInputStream *input,
                                     XMLErrorWatcher *watcher = 0);
 
 Colour xmlStringToColour(const xmlChar *s);
-Colour xmlStringToColour(const boost::shared_ptr<xmlChar> &s);
+Colour xmlStringToColour(const std::shared_ptr<xmlChar> &s);
 
 long xmlStringToLong(const xmlChar *s);
-long xmlStringToLong(const boost::shared_ptr<xmlChar> &s);
+long xmlStringToLong(const std::shared_ptr<xmlChar> &s);
 
 double xmlStringToDouble(const xmlChar *s);
-double xmlStringToDouble(const boost::shared_ptr<xmlChar> &s);
+double xmlStringToDouble(const std::shared_ptr<xmlChar> &s);
 
 bool xmlStringToBool(const xmlChar *s);
-bool xmlStringToBool(const boost::shared_ptr<xmlChar> &s);
+bool xmlStringToBool(const std::shared_ptr<xmlChar> &s);
 
 } // namespace libvisio
 
commit 9ed04deb8286d87446ee211ee3f3ccd36ec8b874
Author: David Tardon <dtardon at redhat.com>
Date:   Fri Apr 7 15:51:11 2017 +0200

    switch to C++11
    
    Change-Id: I5e5f66968da458d8b3c8455b77b1bd9289c83e40

diff --git a/configure.ac b/configure.ac
index b7950ad..bb227a1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,6 +38,8 @@ PKG_PROG_PKG_CONFIG([0.20])
 AC_PROG_EGREP
 AC_PROG_SED
 
+AX_CXX_COMPILE_STDCXX_11([noext])
+
 dnl ===================================================================
 dnl Check for gperf
 dnl ===================================================================
diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4
new file mode 100644
index 0000000..2c18e49
--- /dev/null
+++ b/m4/ax_cxx_compile_stdcxx.m4
@@ -0,0 +1,562 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz at redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw at panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr at ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov at google.com>
+#   Copyright (c) 2015 Paul Norman <penorman at mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz at klammler.eu>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 4
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [],
+        [$1], [14], [],
+        [$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+  AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
+  ax_cv_cxx_compile_cxx$1,
+  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+    [ax_cv_cxx_compile_cxx$1=yes],
+    [ax_cv_cxx_compile_cxx$1=no])])
+  if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
+    ac_success=yes
+  fi
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for switch in -std=gnu++$1 -std=gnu++0x; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_seperators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
diff --git a/m4/ax_cxx_compile_stdcxx_11.m4 b/m4/ax_cxx_compile_stdcxx_11.m4
new file mode 100644
index 0000000..0aadeaf
--- /dev/null
+++ b/m4/ax_cxx_compile_stdcxx_11.m4
@@ -0,0 +1,39 @@
+# ============================================================================
+#  http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
+# ============================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX_11([ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the C++11
+#   standard; if necessary, add switches to CXX and CXXCPP to enable
+#   support.
+#
+#   This macro is a convenience alias for calling the AX_CXX_COMPILE_STDCXX
+#   macro with the version set to C++11.  The two optional arguments are
+#   forwarded literally as the second and third argument respectively.
+#   Please see the documentation for the AX_CXX_COMPILE_STDCXX macro for
+#   more information.  If you want to use this macro, you also need to
+#   download the ax_cxx_compile_stdcxx.m4 file.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz at redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw at panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr at ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov at google.com>
+#   Copyright (c) 2015 Paul Norman <penorman at mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz at klammler.eu>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 17
+
+AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
+AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [AX_CXX_COMPILE_STDCXX([11], [$1], [$2])])
commit beb4eaead00835cde8e87becb5204fe1da70da52
Author: David Tardon <dtardon at redhat.com>
Date:   Fri Apr 7 15:49:37 2017 +0200

    ignore only auto-generated .m4 files
    
    Change-Id: I79c3085ce13b83f1a30e128e6b1ca9ad284ff50f

diff --git a/.gitignore b/.gitignore
index 96ddc28..188c1aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,7 +17,6 @@ libtool
 libvisio.spec
 libvisio-zip
 ltmain.sh
-m4
 missing
 mkinstalldirs
 stamp-h1
diff --git a/m4/.gitignore b/m4/.gitignore
new file mode 100644
index 0000000..94f2b51
--- /dev/null
+++ b/m4/.gitignore
@@ -0,0 +1,2 @@
+libtool.m4
+lt*.m4


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