# HG changeset patch
# User Chris Cannam
# Date 1580220497 0
# Node ID 9d547101e7cdc4ce4b4370fd11e6c22127912e6f
# Parent  7e6e3a27d63e9fd16078a184e4ffadefa5bc98e2
Add missing macro, regenerate

diff -r 7e6e3a27d63e -r 9d547101e7cd acinclude.m4
--- a/acinclude.m4	Tue Jan 28 14:08:04 2020 +0000
+++ b/acinclude.m4	Tue Jan 28 14:08:17 2020 +0000
@@ -261,3 +261,55 @@
   fi
 ])
 
+
+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   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.
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_VAR_IF(CACHEVAR,yes,
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
diff -r 7e6e3a27d63e -r 9d547101e7cd configure
--- a/configure	Tue Jan 28 14:08:04 2020 +0000
+++ b/configure	Tue Jan 28 14:08:17 2020 +0000
@@ -699,6 +699,7 @@
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -804,6 +805,7 @@
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE}'
@@ -1056,6 +1058,15 @@
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1193,7 +1204,7 @@
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1346,6 +1357,7 @@
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -4387,14 +4399,14 @@
 CXXFLAGS_RELEASE="$AUTOCONF_CXXFLAGS"
 OPTFLAGS_RELEASE="-O2"
 LDFLAGS_RELEASE=""
-CXXSTANDARD=c++14
+CXXSTANDARD="c++14"
 
 if test "x$GCC" = "xyes"; then
    	CXXFLAGS_ANY="-fpic -Wall -Wextra -Woverloaded-virtual -Wformat-nonliteral -Wformat-security -Winit-self -Wswitch-enum -Wconversion -pipe"
         CXXFLAGS_DEBUG="$CXXFLAGS_ANY -g -Werror"
         OPTFLAGS_DEBUG="-O2"
    	CXXFLAGS_RELEASE="$CXXFLAGS_ANY -g0"
-        OPTFLAGS_RELEASE="-O3 -ffast-math"
+        OPTFLAGS_RELEASE="-O3"
         LIBS_DEBUG="$LIBS"
         as_CACHEVAR=`$as_echo "ax_cv_check_cxxflags__--std=$CXXSTANDARD" | $as_tr_sh`
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C++ compiler accepts --std=$CXXSTANDARD" >&5
@@ -4432,7 +4444,7 @@
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: Compiler does not appear to support $CXXSTANDARD, falling back to c++11" >&5
 $as_echo "$as_me: Compiler does not appear to support $CXXSTANDARD, falling back to c++11" >&6;}
-        CXXSTANDARD=c++11
+        CXXSTANDARD="c++11"
 fi
 
 fi