Patch to prevent address model being set by Boost.Build.

boost-1.58.0-address-model.patch

@@ -0,0 +1,13 @@
+--- boost_1_58_0/tools/build/src/tools/gcc.jam~	2015-07-17 15:14:57.381636224 +0100
++++ boost_1_58_0/tools/build/src/tools/gcc.jam	2015-07-27 17:35:29.122264048 +0100
+@@ -421,7 +421,9 @@
+ 
+ rule setup-address-model ( targets * : sources * : properties * )
+ {
+-    local model = [ feature.get-values address-model : $(properties) ] ;
++    # For RPM builds the address model flag is passed in %{optflags}.
++    # local model = [ feature.get-values address-model : $(properties) ] ;
++    local model ;
+     if $(model)
+     {
+         local option ;

boost.spec

@@ -32,7 +32,7 @@ Name: boost
 Summary: The free peer-reviewed portable C++ source libraries
 Version: 1.58.0
 %define version_enc 1_58_0
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: Boost and MIT and Python
 
 %define toplev_dirname %{name}_%{version_enc}
@@ -127,6 +127,9 @@ Patch66: boost-1.57.0-uuid-comparison.patch
 # https://svn.boost.org/trac/boost/ticket/11283
 Patch67: boost-1.58.0-variant-includes.patch
 
+# Prevent gcc.jam from setting -m32 or -m64.
+Patch68: boost-1.58.0-address-model.patch
+
 Patch78: boost-context-use-sysv-not-aapcs.patch
 
 %bcond_with tests
@@ -617,6 +620,7 @@ a number of significant features and is now developed independently
 %patch65 -p1
 %patch66 -p2
 %patch67 -p2
+%patch68 -p1
 %patch78 -p1
 
 # At least python2_version needs to be a macro so that it's visible in
@@ -676,8 +680,7 @@ echo ============================= build serial ==================
 	variant=release threading=multi debug-symbols=on pch=off \
 	python=%{python2_version} stage
 
-# See boost-1.54.0-thread-link_atomic.patch for where this file comes
-# from.
+# See libs/thread/build/Jamfile.v2 for where this file comes from.
 if [ $(find serial -type f -name has_atomic_flag_lockfree \
 		-print -quit | wc -l) -ne 0 ]; then
 	DEF=D
@@ -1237,6 +1240,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man1/bjam.1*
 
 %changelog
+* Tue Aug 04 2015 Jonathan Wakely <jwakely@redhat.com> 1.58.0-3
+- Patch to prevent address model being set by Boost.Build.
+
 * Mon Jul 27 2015 Jonathan Wakely <jwakely@redhat.com> 1.58.0-2
 - Patch for missing include (boost-1.58.0-variant-includes.patch).