From 633d0621f84838a0f469e27b760728fe7bfb1b64 Mon Sep 17 00:00:00 2001
From: Arvid Norberg <arvid.norberg@gmail.com>
Date: Thu, 28 Jul 2016 08:34:22 -0400
Subject: [PATCH] update required boost version and ax_boost_base.m4 (#937)

bump boost version requirement to 1.53, update ax_boost_base.m4
---
 configure.ac        |  2 +-
 m4/ax_boost_base.m4 | 25 ++++++++++++++++++++++---
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 413da26cb..c085f9def 100644
--- a/configure.ac
+++ b/configure.ac
@@ -117,7 +117,7 @@ AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
 AS_ECHO
 AS_ECHO "Checking for boost libraries:"
 
-AX_BOOST_BASE([1.47])
+AX_BOOST_BASE([1.53])
 
 AX_BOOST_SYSTEM()
 AS_IF([test -z "$BOOST_SYSTEM_LIB"],
diff --git a/m4/ax_boost_base.m4 b/m4/ax_boost_base.m4
index ac9ee75ec..d35d466de 100644
--- a/m4/ax_boost_base.m4
+++ b/m4/ax_boost_base.m4
@@ -33,7 +33,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 22
+#serial 26
 
 AC_DEFUN([AX_BOOST_BASE],
 [
@@ -92,8 +92,11 @@ if test "x$want_boost" = "xyes"; then
     libsubdirs="lib"
     ax_arch=`uname -m`
     case $ax_arch in
-      x86_64|ppc64|s390x|sparc64|aarch64)
-        libsubdirs="lib64 lib lib64"
+      x86_64)
+        libsubdirs="lib64 libx32 lib lib64"
+        ;;
+      ppc64|s390x|sparc64|aarch64|ppc64le)
+        libsubdirs="lib64 lib lib64 ppc64le"
         ;;
     esac
 
@@ -103,6 +106,12 @@ if test "x$want_boost" = "xyes"; then
     AC_REQUIRE([AC_CANONICAL_HOST])
     libsubdirs="lib/${host_cpu}-${host_os} $libsubdirs"
 
+    case ${host_cpu} in
+      i?86)
+        libsubdirs="lib/i386-${host_os} $libsubdirs"
+        ;;
+    esac
+
     dnl first we check the system location for boost libraries
     dnl this location ist chosen if boost libraries are installed with the --layout=system option
     dnl or if you install boost with RPM
@@ -164,6 +173,10 @@ if test "x$want_boost" = "xyes"; then
     dnl if we found no boost with system layout we search for boost libraries
     dnl built and installed without the --layout=system option or for a staged(not installed) version
     if test "x$succeeded" != "xyes"; then
+        CPPFLAGS="$CPPFLAGS_SAVED"
+        LDFLAGS="$LDFLAGS_SAVED"
+        BOOST_CPPFLAGS=
+        BOOST_LDFLAGS=
         _version=0
         if test "$ac_boost_path" != ""; then
             if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
@@ -176,6 +189,12 @@ if test "x$want_boost" = "xyes"; then
                     VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
                     BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
                 done
+                dnl if nothing found search for layout used in Windows distributions
+                if test -z "$BOOST_CPPFLAGS"; then
+                    if test -d "$ac_boost_path/boost" && test -r "$ac_boost_path/boost"; then
+                        BOOST_CPPFLAGS="-I$ac_boost_path"
+                    fi
+                fi
             fi
         else
             if test "$cross_compiling" != yes; then