package/cc-tool: fix gcc 5 issue

The version of boost.m4 initially included in cc-tool has an issue
with gcc5 (one of its tests fails due to the first change described in [1]
"Preprocessor issues").

This was fixed upstream (boost.m4 project) in Nov 2014 [2].

We add the latest commit [3] of upstream boost.m4 plus a patch from github PR
[4] to add detection for gcc 5.1.

Fixes:
http://autobuild.buildroot.net/results/a4c/a4c057e0b1ab6a2ffd69b27f6f5a79f98eb040f6/

[1]
https://gcc.gnu.org/gcc-5/porting_to.html

[2]
https://github.com/tsuna/boost.m4/commit/32553aaf4d5090da19aa0ec33b936982c685009f

[3]
https://github.com/tsuna/boost.m4/commit/d9ff75b6af66360d76f46f469a26ab18e24e1030

[4]
https://github.com/rubenk/boost.m4/commit/b879eb85f112cf054643d2e7f9544c230299c0b2

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/cc-tool/0002-boost-m4.patch

@@ -0,0 +1,883 @@
+The version of boost.m4 initially included in cc-tool has an issue
+with gcc5 (one of its tests fails due to the first change described in [1]
+"Preprocessor issues").
+
+This was fixed upstream (boost.m4 project) in Nov 2014 [2].
+
+We add the latest commit [3] of upstream boost.m4 plus a patch from github PR
+[4] to add detection for gcc 5.1.
+
+[1]
+https://gcc.gnu.org/gcc-5/porting_to.html
+
+[2]
+https://github.com/tsuna/boost.m4/commit/32553aaf4d5090da19aa0ec33b936982c685009f
+
+[3]
+https://github.com/tsuna/boost.m4/commit/d9ff75b6af66360d76f46f469a26ab18e24e1030
+
+[4]
+https://github.com/rubenk/boost.m4/commit/b879eb85f112cf054643d2e7f9544c230299c0b2
+
+Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
+
+diff -purN cc-tool.original/m4/boost.m4 cc-tool/m4/boost.m4
+--- cc-tool.original/m4/boost.m4	2015-07-28 15:43:25.458840000 +0200
++++ cc-tool/m4/boost.m4	2015-07-28 16:12:02.532791424 +0200
+@@ -1,5 +1,5 @@
+ # boost.m4: Locate Boost headers and libraries for autoconf-based projects.
+-# Copyright (C) 2007, 2008, 2009, 2010, 2011  Benoit Sigoure <tsuna@lrde.epita.fr>
++# Copyright (C) 2007-2011, 2014  Benoit Sigoure <tsuna@lrde.epita.fr>
+ #
+ # This program is free software: you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
+@@ -22,7 +22,7 @@
+ # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ 
+ m4_define([_BOOST_SERIAL], [m4_translit([
+-# serial 16
++# serial 25
+ ], [#
+ ], [])])
+ 
+@@ -59,7 +59,8 @@ m4_pattern_forbid([^_?(BOOST|Boost)_])
+ # It could be useful to turn this into a macro which extracts the
+ # value of any macro.
+ m4_define([_BOOST_SED_CPP],
+-[AC_LANG_PREPROC_REQUIRE()dnl
++[AC_LANG_PUSH([C++])dnl
++AC_LANG_PREPROC_REQUIRE()dnl
+ AC_REQUIRE([AC_PROG_SED])dnl
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
+ AS_IF([dnl eval is necessary to expand ac_cpp.
+@@ -71,13 +72,31 @@ dnl strip `\n' with backquotes, not the
+ dnl boost_cv_lib_version='1_37\r' for instance, which breaks
+ dnl everything else.
+ dnl Cannot use 'dnl' after [$4] because a trailing dnl may break AC_CACHE_CHECK
++dnl
++dnl Beware that GCC 5, when expanding macros, may embed # line directives
++dnl a within single line:
++dnl
++dnl # 1 "conftest.cc"
++dnl # 1 "<built-in>"
++dnl # 1 "<command-line>"
++dnl # 1 "conftest.cc"
++dnl # 1 "/opt/local/include/boost/version.hpp" 1 3
++dnl # 2 "conftest.cc" 2
++dnl boost-lib-version =
++dnl # 2 "conftest.cc" 3
++dnl                    "1_56"
++dnl
++dnl So get rid of the # lines, and glue the remaining ones together.
+ (eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
++  grep -v '#' |
+   tr -d '\r' |
++  tr -s '\n' ' ' |
+   $SED -n -e "$1" >conftest.i 2>&1],
+   [$3],
+   [$4])
+ rm -rf conftest*
+-])# AC_EGREP_CPP
++AC_LANG_POP([C++])dnl
++])# _BOOST_SED_CPP
+ 
+ 
+ 
+@@ -206,7 +225,7 @@ AC_LANG_POP([C++])dnl
+   AC_CACHE_CHECK([for Boost's header version],
+     [boost_cv_lib_version],
+     [m4_pattern_allow([^BOOST_LIB_VERSION$])dnl
+-     _BOOST_SED_CPP([/^boost-lib-version = /{s///;s/\"//g;p;q;}],
++     _BOOST_SED_CPP([[/^boost-lib-version = /{s///;s/[\" ]//g;p;q;}]],
+                     [#include <boost/version.hpp>
+ boost-lib-version = BOOST_LIB_VERSION],
+     [boost_cv_lib_version=`cat conftest.i`])])
+@@ -214,13 +233,14 @@ boost-lib-version = BOOST_LIB_VERSION],
+     boost_major_version=`echo "$boost_cv_lib_version" | sed 's/_//;s/_.*//'`
+     case $boost_major_version in #(
+       '' | *[[!0-9]]*)
+-        AC_MSG_ERROR([invalid value: boost_major_version=$boost_major_version])
++        AC_MSG_ERROR([invalid value: boost_major_version='$boost_major_version'])
+         ;;
+     esac
+ fi
+ CPPFLAGS=$boost_save_CPPFLAGS
+ ])# BOOST_REQUIRE
+ 
++
+ # BOOST_STATIC()
+ # --------------
+ # Add the "--enable-static-boost" configure argument. If this argument is given
+@@ -232,6 +252,7 @@ AC_DEFUN([BOOST_STATIC],
+      [enable_static_boost=yes],
+      [enable_static_boost=no])])# BOOST_STATIC
+ 
++
+ # BOOST_FIND_HEADER([HEADER-NAME], [ACTION-IF-NOT-FOUND], [ACTION-IF-FOUND])
+ # --------------------------------------------------------------------------
+ # Wrapper around AC_CHECK_HEADER for Boost headers.  Useful to check for
+@@ -264,14 +285,16 @@ fi
+ ])# BOOST_FIND_HEADER
+ 
+ 
+-# BOOST_FIND_LIB([LIB-NAME], [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
+-#                [CXX-PROLOGUE])
+-# -------------------------------------------------------------------------
+-# Look for the Boost library LIB-NAME (e.g., LIB-NAME = `thread', for
+-# libboost_thread).  Check that HEADER-NAME works and check that
+-# libboost_LIB-NAME can link with the code CXX-TEST.  The optional argument
+-# CXX-PROLOGUE can be used to include some C++ code before the `main'
+-# function.
++# BOOST_FIND_LIBS([COMPONENT-NAME], [CANDIDATE-LIB-NAMES],
++#                 [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
++#                 [CXX-PROLOGUE])
++# --------------------------------------------------------------
++# Look for the Boost library COMPONENT-NAME (e.g., `thread', for
++# libboost_thread) under the possible CANDIDATE-LIB-NAMES (e.g.,
++# "thread_win32 thread").  Check that HEADER-NAME works and check that
++# libboost_LIB-NAME can link with the code CXX-TEST.  The optional
++# argument CXX-PROLOGUE can be used to include some C++ code before
++# the `main' function.
+ #
+ # Invokes BOOST_FIND_HEADER([HEADER-NAME]) (see above).
+ #
+@@ -285,7 +308,7 @@ fi
+ # builds.  Some sample values for PREFERRED-RT-OPT: (nothing), mt, d, mt-d, gdp
+ # ...  If you want to make sure you have a specific version of Boost
+ # (eg, >= 1.33) you *must* invoke BOOST_REQUIRE before this macro.
+-AC_DEFUN([BOOST_FIND_LIB],
++AC_DEFUN([BOOST_FIND_LIBS],
+ [AC_REQUIRE([BOOST_REQUIRE])dnl
+ AC_REQUIRE([_BOOST_FIND_COMPILER_TAG])dnl
+ AC_REQUIRE([BOOST_STATIC])dnl
+@@ -299,32 +322,69 @@ AS_VAR_PUSHDEF([Boost_lib], [boost_cv_li
+ AS_VAR_PUSHDEF([Boost_lib_LDFLAGS], [boost_cv_lib_$1_LDFLAGS])dnl
+ AS_VAR_PUSHDEF([Boost_lib_LDPATH], [boost_cv_lib_$1_LDPATH])dnl
+ AS_VAR_PUSHDEF([Boost_lib_LIBS], [boost_cv_lib_$1_LIBS])dnl
+-BOOST_FIND_HEADER([$3])
++BOOST_FIND_HEADER([$4])
+ boost_save_CPPFLAGS=$CPPFLAGS
+ CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+-# Now let's try to find the library.  The algorithm is as follows: first look
+-# for a given library name according to the user's PREFERRED-RT-OPT.  For each
+-# library name, we prefer to use the ones that carry the tag (toolset name).
+-# Each library is searched through the various standard paths were Boost is
+-# usually installed.  If we can't find the standard variants, we try to
+-# enforce -mt (for instance on MacOSX, libboost_threads.dylib doesn't exist
+-# but there's -obviously- libboost_threads-mt.dylib).
+ AC_CACHE_CHECK([for the Boost $1 library], [Boost_lib],
+-  [Boost_lib=no
+-  case "$2" in #(
+-    mt | mt-) boost_mt=-mt; boost_rtopt=;; #(
+-    mt* | mt-*) boost_mt=-mt; boost_rtopt=`expr "X$2" : 'Xmt-*\(.*\)'`;; #(
+-    *) boost_mt=; boost_rtopt=$2;;
++               [_BOOST_FIND_LIBS($@)])
++case $Boost_lib in #(
++  (no) _AC_MSG_LOG_CONFTEST
++    AC_MSG_ERROR([cannot find the flags to link with Boost $1])
++    ;;
++esac
++AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
++AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
++AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
++AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
++CPPFLAGS=$boost_save_CPPFLAGS
++AS_VAR_POPDEF([Boost_lib])dnl
++AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
++AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
++AS_VAR_POPDEF([Boost_lib_LIBS])dnl
++AC_LANG_POP([C++])dnl
++fi
++])
++
++
++# BOOST_FIND_LIB([LIB-NAME],
++#                [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
++#                [CXX-PROLOGUE])
++# --------------------------------------------------------------
++# Backward compatibility wrapper for BOOST_FIND_LIBS.
++AC_DEFUN([BOOST_FIND_LIB],
++[BOOST_FIND_LIBS([$1], $@)])
++
++
++# _BOOST_FIND_LIBS([LIB-NAME], [CANDIDATE-LIB-NAMES],
++#                 [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
++#                 [CXX-PROLOGUE])
++# --------------------------------------------------------------
++# Real implementation of BOOST_FIND_LIBS: rely on these local macros:
++# Boost_lib, Boost_lib_LDFLAGS, Boost_lib_LDPATH, Boost_lib_LIBS
++#
++# The algorithm is as follows: first look for a given library name
++# according to the user's PREFERRED-RT-OPT.  For each library name, we
++# prefer to use the ones that carry the tag (toolset name).  Each
++# library is searched through the various standard paths were Boost is
++# usually installed.  If we can't find the standard variants, we try
++# to enforce -mt (for instance on MacOSX, libboost_thread.dylib
++# doesn't exist but there's -obviously- libboost_thread-mt.dylib).
++AC_DEFUN([_BOOST_FIND_LIBS],
++[Boost_lib=no
++  case "$3" in #(
++    (mt | mt-) boost_mt=-mt; boost_rtopt=;; #(
++    (mt* | mt-*) boost_mt=-mt; boost_rtopt=`expr "X$3" : 'Xmt-*\(.*\)'`;; #(
++    (*) boost_mt=; boost_rtopt=$3;;
+   esac
+   if test $enable_static_boost = yes; then
+     boost_rtopt="s$boost_rtopt"
+   fi
+   # Find the proper debug variant depending on what we've been asked to find.
+   case $boost_rtopt in #(
+-    *d*) boost_rt_d=$boost_rtopt;; #(
+-    *[[sgpn]]*) # Insert the `d' at the right place (in between `sg' and `pn')
++    (*d*) boost_rt_d=$boost_rtopt;; #(
++    (*[[sgpn]]*) # Insert the `d' at the right place (in between `sg' and `pn')
+       boost_rt_d=`echo "$boost_rtopt" | sed 's/\(s*g*\)\(p*n*\)/\1\2/'`;; #(
+-    *) boost_rt_d='-d';;
++    (*) boost_rt_d='-d';;
+   esac
+   # If the PREFERRED-RT-OPT are not empty, prepend a `-'.
+   test -n "$boost_rtopt" && boost_rtopt="-$boost_rtopt"
+@@ -335,8 +395,8 @@ AC_CACHE_CHECK([for the Boost $1 library
+     AC_MSG_ERROR([the libext variable is empty, did you invoke Libtool?])
+   boost_save_ac_objext=$ac_objext
+   # Generate the test file.
+-  AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <$3>
+-$5], [$4])])
++  AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <$4>
++$6], [$5])])
+ dnl Optimization hacks: compiling C++ is slow, especially with Boost.  What
+ dnl we're trying to do here is guess the right combination of link flags
+ dnl (LIBS / LDFLAGS) to use a given library.  This can take several
+@@ -358,21 +418,22 @@ dnl start the for loops).
+     [AC_MSG_ERROR([cannot compile a test that uses Boost $1])])
+   ac_objext=$boost_save_ac_objext
+   boost_failed_libs=
+-# Don't bother to ident the 6 nested for loops, only the 2 innermost ones
+-# matter.
++# Don't bother to ident the following nested for loops, only the 2
++# innermost ones matter.
++for boost_lib_ in $2; do
+ for boost_tag_ in -$boost_cv_lib_tag ''; do
+ for boost_ver_ in -$boost_cv_lib_version ''; do
+ for boost_mt_ in $boost_mt -mt ''; do
+ for boost_rtopt_ in $boost_rtopt '' -d; do
+   for boost_lib in \
+-    boost_$1$boost_tag_$boost_mt_$boost_rtopt_$boost_ver_ \
+-    boost_$1$boost_tag_$boost_rtopt_$boost_ver_ \
+-    boost_$1$boost_tag_$boost_mt_$boost_ver_ \
+-    boost_$1$boost_tag_$boost_ver_
++    boost_$boost_lib_$boost_tag_$boost_mt_$boost_rtopt_$boost_ver_ \
++    boost_$boost_lib_$boost_tag_$boost_rtopt_$boost_ver_ \
++    boost_$boost_lib_$boost_tag_$boost_mt_$boost_ver_ \
++    boost_$boost_lib_$boost_tag_$boost_ver_
+   do
+     # Avoid testing twice the same lib
+     case $boost_failed_libs in #(
+-      *@$boost_lib@*) continue;;
++      (*@$boost_lib@*) continue;;
+     esac
+     # If with_boost is empty, we'll search in /lib first, which is not quite
+     # right so instead we'll try to a location based on where the headers are.
+@@ -382,14 +443,17 @@ for boost_rtopt_ in $boost_rtopt '' -d;
+              /opt/local/lib* /usr/local/lib* /opt/lib* /usr/lib* \
+              "$with_boost" C:/Boost/lib /lib*
+     do
+-      test -e "$boost_ldpath" || continue
++      # Don't waste time with directories that don't exist.
++      if test x"$boost_ldpath" != x && test ! -e "$boost_ldpath"; then
++        continue
++      fi
+       boost_save_LDFLAGS=$LDFLAGS
+       # Are we looking for a static library?
+       case $boost_ldpath:$boost_rtopt_ in #(
+-        *?*:*s*) # Yes (Non empty boost_ldpath + s in rt opt)
++        (*?*:*s*) # Yes (Non empty boost_ldpath + s in rt opt)
+           Boost_lib_LIBS="$boost_ldpath/lib$boost_lib.$libext"
+           test -e "$Boost_lib_LIBS" || continue;; #(
+-        *) # No: use -lboost_foo to find the shared library.
++        (*) # No: use -lboost_foo to find the shared library.
+           Boost_lib_LIBS="-l$boost_lib";;
+       esac
+       boost_save_LIBS=$LIBS
+@@ -403,9 +467,35 @@ dnl generated only once above (before we
+       LDFLAGS=$boost_save_LDFLAGS
+       LIBS=$boost_save_LIBS
+       if test x"$Boost_lib" = xyes; then
+-        Boost_lib_LDFLAGS="-L$boost_ldpath -Wl,-rpath,$boost_ldpath"
++        # Check or used cached result of whether or not using -R or
++        # -rpath makes sense.  Some implementations of ld, such as for
++        # Mac OSX, require -rpath but -R is the flag known to work on
++        # other systems.  https://github.com/tsuna/boost.m4/issues/19
++        AC_CACHE_VAL([boost_cv_rpath_link_ldflag],
++          [case $boost_ldpath in
++           '') # Nothing to do.
++             boost_cv_rpath_link_ldflag=
++             boost_rpath_link_ldflag_found=yes;;
++           *)
++            for boost_cv_rpath_link_ldflag in -Wl,-R, -Wl,-rpath,; do
++              LDFLAGS="$boost_save_LDFLAGS -L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
++              LIBS="$boost_save_LIBS $Boost_lib_LIBS"
++              _BOOST_AC_LINK_IFELSE([],
++                [boost_rpath_link_ldflag_found=yes
++                break],
++                [boost_rpath_link_ldflag_found=no])
++            done
++            ;;
++          esac
++          AS_IF([test "x$boost_rpath_link_ldflag_found" != "xyes"],
++            [AC_MSG_ERROR([Unable to determine whether to use -R or -rpath])])
++          LDFLAGS=$boost_save_LDFLAGS
++          LIBS=$boost_save_LIBS
++          ])
++        test x"$boost_ldpath" != x &&
++          Boost_lib_LDFLAGS="-L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
+         Boost_lib_LDPATH="$boost_ldpath"
+-        break 6
++        break 7
+       else
+         boost_failed_libs="$boost_failed_libs@$boost_lib@"
+       fi
+@@ -415,25 +505,10 @@ done
+ done
+ done
+ done
++done # boost_lib_
+ rm -f conftest.$ac_objext
+ ])
+-case $Boost_lib in #(
+-  no) _AC_MSG_LOG_CONFTEST
+-    AC_MSG_ERROR([cannot find the flags to link with Boost $1])
+-    ;;
+-esac
+-AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
+-AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
+-AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
+-AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
+-CPPFLAGS=$boost_save_CPPFLAGS
+-AS_VAR_POPDEF([Boost_lib])dnl
+-AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
+-AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
+-AS_VAR_POPDEF([Boost_lib_LIBS])dnl
+-AC_LANG_POP([C++])dnl
+-fi
+-])# BOOST_FIND_LIB
++
+ 
+ 
+ # --------------------------------------- #
+@@ -475,20 +550,20 @@ BOOST_FIND_HEADER([boost/asio.hpp])])
+ 
+ # BOOST_BIND()
+ # ------------
+-# Look for Boost.Bind
++# Look for Boost.Bind.
+ BOOST_DEFUN([Bind],
+ [BOOST_FIND_HEADER([boost/bind.hpp])])
+ 
+ 
+ # BOOST_CHRONO()
+-# ------------------
+-# Look for Boost.Chrono
++# --------------
++# Look for Boost.Chrono.
+ BOOST_DEFUN([Chrono],
+ [# Do we have to check for Boost.System?  This link-time dependency was
+ # added as of 1.35.0.  If we have a version <1.35, we must not attempt to
+ # find Boost.System as it didn't exist by then.
+ if test $boost_major_version -ge 135; then
+-BOOST_SYSTEM([$1])
++  BOOST_SYSTEM([$1])
+ fi # end of the Boost.System check.
+ boost_filesystem_save_LIBS=$LIBS
+ boost_filesystem_save_LDFLAGS=$LDFLAGS
+@@ -499,14 +574,40 @@ BOOST_FIND_LIB([chrono], [$1],
+                 [boost/chrono.hpp],
+                 [boost::chrono::thread_clock d;])
+ if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
+-    AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
++  BOOST_CHRONO_LIBS="$BOOST_CHRONO_LIBS $BOOST_SYSTEM_LIBS"
+ fi
+ LIBS=$boost_filesystem_save_LIBS
+ LDFLAGS=$boost_filesystem_save_LDFLAGS
+-
+ ])# BOOST_CHRONO
+ 
+ 
++# BOOST_CONTEXT([PREFERRED-RT-OPT])
++# -----------------------------------
++# Look for Boost.Context.  For the documentation of PREFERRED-RT-OPT, see the
++# documentation of BOOST_FIND_LIB above.  This library was introduced in Boost
++# 1.51.0
++BOOST_DEFUN([Context],
++[BOOST_FIND_LIB([context], [$1],
++                [boost/context/all.hpp],[[
++// creates a stack
++void * stack_pointer = new void*[4096];
++std::size_t const size = sizeof(void*[4096]);
++
++// context fc uses f() as context function
++// fcontext_t is placed on top of context stack
++// a pointer to fcontext_t is returned
++fc = ctx::make_fcontext(stack_pointer, size, f);
++return ctx::jump_fcontext(&fcm, fc, 3) == 6;]],[dnl
++namespace ctx = boost::context;
++// context
++static ctx::fcontext_t fcm, *fc;
++// context-function
++static void f(intptr_t i) {
++    ctx::jump_fcontext(fc, &fcm, i * 2);
++}])
++])# BOOST_CONTEXT
++
++
+ # BOOST_CONVERSION()
+ # ------------------
+ # Look for Boost.Conversion (cast / lexical_cast)
+@@ -516,6 +617,52 @@ BOOST_FIND_HEADER([boost/lexical_cast.hp
+ ])# BOOST_CONVERSION
+ 
+ 
++# BOOST_COROUTINE([PREFERRED-RT-OPT])
++# -----------------------------------
++# Look for Boost.Coroutine.  For the documentation of PREFERRED-RT-OPT, see the
++# documentation of BOOST_FIND_LIB above.  This library was introduced in Boost
++# 1.53.0
++BOOST_DEFUN([Coroutine],
++[
++boost_coroutine_save_LIBS=$LIBS
++boost_coroutine_save_LDFLAGS=$LDFLAGS
++# Link-time dependency from coroutine to context
++BOOST_CONTEXT([$1])
++# Starting from Boost 1.55 a dependency on Boost.System is added
++if test $boost_major_version -ge 155; then
++  BOOST_SYSTEM([$1])
++fi
++m4_pattern_allow([^BOOST_(CONTEXT|SYSTEM)_(LIBS|LDFLAGS)])
++LIBS="$LIBS $BOOST_CONTEXT_LIBS $BOOST_SYSTEM_LIBS"
++LDFLAGS="$LDFLAGS $BOOST_CONTEXT_LDFLAGS"
++
++BOOST_FIND_LIB([coroutine], [$1],
++                [boost/coroutine/coroutine.hpp],
++                [boost::coroutines::coroutine< int(int) > coro; coro.empty();])
++
++# Link-time dependency from coroutine to context, existed only in 1.53, in 1.54
++# coroutine doesn't use context from its headers but from its library.
++if test $boost_major_version -eq 153 || test $enable_static_boost = yes && test $boost_major_version -ge 154; then
++  BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_CONTEXT_LIBS"
++  BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_CONTEXT_LDFLAGS"
++fi
++if test $enable_static_boost = yes && test $boost_major_version -ge 155; then
++  BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_SYSTEM_LIBS"
++  BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_SYSTEM_LDFLAGS"
++fi
++LIBS=$boost_coroutine_save_LIBS
++LDFLAGS=$boost_coroutine_save_LDFLAGS
++])# BOOST_COROUTINE
++
++
++# BOOST_CRC()
++# -----------
++# Look for Boost.CRC
++BOOST_DEFUN([CRC],
++[BOOST_FIND_HEADER([boost/crc.hpp])
++])# BOOST_CRC
++
++
+ # BOOST_DATE_TIME([PREFERRED-RT-OPT])
+ # -----------------------------------
+ # Look for Boost.Date_Time.  For the documentation of PREFERRED-RT-OPT, see the
+@@ -538,7 +685,7 @@ BOOST_DEFUN([Filesystem],
+ # added as of 1.35.0.  If we have a version <1.35, we must not attempt to
+ # find Boost.System as it didn't exist by then.
+ if test $boost_major_version -ge 135; then
+-BOOST_SYSTEM([$1])
++  BOOST_SYSTEM([$1])
+ fi # end of the Boost.System check.
+ boost_filesystem_save_LIBS=$LIBS
+ boost_filesystem_save_LDFLAGS=$LDFLAGS
+@@ -548,23 +695,34 @@ LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
+ BOOST_FIND_LIB([filesystem], [$1],
+                 [boost/filesystem/path.hpp], [boost::filesystem::path p;])
+ if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
+-    AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
++  BOOST_FILESYSTEM_LIBS="$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"
+ fi
+ LIBS=$boost_filesystem_save_LIBS
+ LDFLAGS=$boost_filesystem_save_LDFLAGS
+ ])# BOOST_FILESYSTEM
+ 
+ 
++# BOOST_FLYWEIGHT()
++# -----------------
++# Look for Boost.Flyweight.
++BOOST_DEFUN([Flyweight],
++[dnl There's a hidden dependency on pthreads.
++AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
++BOOST_FIND_HEADER([boost/flyweight.hpp])
++AC_SUBST([BOOST_FLYWEIGHT_LIBS], [$boost_cv_pthread_flag])
++])
++
++
+ # BOOST_FOREACH()
+ # ---------------
+-# Look for Boost.Foreach
++# Look for Boost.Foreach.
+ BOOST_DEFUN([Foreach],
+ [BOOST_FIND_HEADER([boost/foreach.hpp])])
+ 
+ 
+ # BOOST_FORMAT()
+ # --------------
+-# Look for Boost.Format
++# Look for Boost.Format.
+ # Note: we can't check for boost/format/format_fwd.hpp because the header isn't
+ # standalone.  It can't be compiled because it triggers the following error:
+ # boost/format/detail/config_macros.hpp:88: error: 'locale' in namespace 'std'
+@@ -580,6 +738,14 @@ BOOST_DEFUN([Function],
+ [BOOST_FIND_HEADER([boost/function.hpp])])
+ 
+ 
++# BOOST_GEOMETRY()
++# ----------------
++# Look for Boost.Geometry (new since 1.47.0).
++BOOST_DEFUN([Geometry],
++[BOOST_FIND_HEADER([boost/geometry.hpp])
++])# BOOST_GEOMETRY
++
++
+ # BOOST_GRAPH([PREFERRED-RT-OPT])
+ # -------------------------------
+ # Look for Boost.Graphs.  For the documentation of PREFERRED-RT-OPT, see the
+@@ -615,9 +781,18 @@ BOOST_DEFUN([Lambda],
+ [BOOST_FIND_HEADER([boost/lambda/lambda.hpp])])
+ 
+ 
++# BOOST_LOCALE()
++# --------------
++# Look for Boost.Locale
++BOOST_DEFUN([Locale],
++[BOOST_FIND_LIB([locale], [$1],
++    [boost/locale.hpp],
++    [[boost::locale::generator gen; std::locale::global(gen(""));]])
++])# BOOST_LOCALE
++
+ # BOOST_LOG([PREFERRED-RT-OPT])
+ # -----------------------------
+-# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
++# Look for Boost.Log.  For the documentation of PREFERRED-RT-OPT, see the
+ # documentation of BOOST_FIND_LIB above.
+ BOOST_DEFUN([Log],
+ [BOOST_FIND_LIB([log], [$1],
+@@ -628,12 +803,12 @@ BOOST_DEFUN([Log],
+ 
+ # BOOST_LOG_SETUP([PREFERRED-RT-OPT])
+ # -----------------------------------
+-# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
++# Look for Boost.Log.  For the documentation of PREFERRED-RT-OPT, see the
+ # documentation of BOOST_FIND_LIB above.
+ BOOST_DEFUN([Log_Setup],
+ [AC_REQUIRE([BOOST_LOG])dnl
+ BOOST_FIND_LIB([log_setup], [$1],
+-    [boost/log/utility/init/from_settings.hpp],
++    [boost/log/utility/setup/from_settings.hpp],
+     [boost::log::basic_settings<char> bs; bs.empty();])
+ ])# BOOST_LOG_SETUP
+ 
+@@ -650,6 +825,29 @@ BOOST_DEFUN([Math],
+ [BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
+ 
+ 
++# BOOST_MPI([PREFERRED-RT-OPT])
++# -------------------------------
++# Look for Boost MPI.  For the documentation of PREFERRED-RT-OPT, see the
++# documentation of BOOST_FIND_LIB above.  Uses MPICXX variable if it is
++# set, otherwise tries CXX
++#
++BOOST_DEFUN([MPI],
++[boost_save_CXX=${CXX}
++boost_save_CXXCPP=${CXXCPP}
++if test x"${MPICXX}" != x; then
++  CXX=${MPICXX}
++  CXXCPP="${MPICXX} -E"
++fi
++BOOST_FIND_LIB([mpi], [$1],
++               [boost/mpi.hpp],
++               [int argc = 0;
++                char **argv = 0;
++                boost::mpi::environment env(argc,argv);])
++CXX=${boost_save_CXX}
++CXXCPP=${boost_save_CXXCPP}
++])# BOOST_MPI
++
++
+ # BOOST_MULTIARRAY()
+ # ------------------
+ # Look for Boost.MultiArray
+@@ -657,6 +855,14 @@ BOOST_DEFUN([MultiArray],
+ [BOOST_FIND_HEADER([boost/multi_array.hpp])])
+ 
+ 
++# BOOST_NUMERIC_UBLAS()
++# --------------------------
++# Look for Boost.NumericUblas (Basic Linear Algebra)
++BOOST_DEFUN([Numeric_Ublas],
++[BOOST_FIND_HEADER([boost/numeric/ublas/vector.hpp])
++])# BOOST_NUMERIC_UBLAS
++
++
+ # BOOST_NUMERIC_CONVERSION()
+ # --------------------------
+ # Look for Boost.NumericConversion (policy-based numeric conversion)
+@@ -679,6 +885,12 @@ BOOST_DEFUN([Preprocessor],
+ [BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
+ 
+ 
++# BOOST_RANGE()
++# --------------------
++# Look for Boost.Range
++BOOST_DEFUN([Range],
++[BOOST_FIND_HEADER([boost/range/adaptors.hpp])])
++
+ # BOOST_UNORDERED()
+ # -----------------
+ # Look for Boost.Unordered
+@@ -725,9 +937,9 @@ BOOST_DEFUN([Python],
+ _BOOST_PYTHON_CONFIG([LDFLAGS],   [ldflags])
+ _BOOST_PYTHON_CONFIG([LIBS],      [libs])
+ m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
+-BOOST_FIND_LIB([python], [$1],
+-               [boost/python.hpp],
+-               [], [BOOST_PYTHON_MODULE(empty) {}])
++BOOST_FIND_LIBS([python], [python python3], [$1],
++                [boost/python.hpp],
++                [], [BOOST_PYTHON_MODULE(empty) {}])
+ CPPFLAGS=$boost_python_save_CPPFLAGS
+ LDFLAGS=$boost_python_save_LDFLAGS
+ LIBS=$boost_python_save_LIBS
+@@ -774,17 +986,13 @@ BOOST_DEFUN([Signals],
+                 [boost::signal<void ()> s;])
+ ])# BOOST_SIGNALS
+ 
++
+ # BOOST_SIGNALS2()
+-# -----------------
+-# Look for Boost.Signals2
++# ----------------
++# Look for Boost.Signals2 (new since 1.39.0).
+ BOOST_DEFUN([Signals2],
+-[BOOST_FIND_HEADER([boost/signals2.hpp])])
+-
+-# BOOST_CRC()
+-# -----------------
+-# Look for Boost.CRC
+-BOOST_DEFUN([CRC],
+-[BOOST_FIND_HEADER([boost/crc.hpp])])
++[BOOST_FIND_HEADER([boost/signals2.hpp])
++])# BOOST_SIGNALS2
+ 
+ 
+ # BOOST_SMART_PTR()
+@@ -837,19 +1045,18 @@ BOOST_FIND_LIB([unit_test_framework], [$
+ ])# BOOST_TEST
+ 
+ 
+-# BOOST_THREADS([PREFERRED-RT-OPT])
++# BOOST_THREAD([PREFERRED-RT-OPT])
+ # ---------------------------------
+ # Look for Boost.Thread.  For the documentation of PREFERRED-RT-OPT, see the
+ # documentation of BOOST_FIND_LIB above.
+-# FIXME: Provide an alias "BOOST_THREAD".
+-BOOST_DEFUN([Threads],
++BOOST_DEFUN([Thread],
+ [dnl Having the pthread flag is required at least on GCC3 where
+ dnl boost/thread.hpp would complain if we try to compile without
+ dnl -pthread on GNU/Linux.
+ AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
+-boost_threads_save_LIBS=$LIBS
+-boost_threads_save_LDFLAGS=$LDFLAGS
+-boost_threads_save_CPPFLAGS=$CPPFLAGS
++boost_thread_save_LIBS=$LIBS
++boost_thread_save_LDFLAGS=$LDFLAGS
++boost_thread_save_CPPFLAGS=$CPPFLAGS
+ # Link-time dependency from thread to system was added as of 1.49.0.
+ if test $boost_major_version -ge 149; then
+ BOOST_SYSTEM([$1])
+@@ -857,36 +1064,26 @@ fi # end of the Boost.System check.
+ m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
+ LIBS="$LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag"
+ LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
+-# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
+-# boost/thread.hpp will trigger a #error if -pthread isn't used:
+-#   boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
+-#   is not turned on. Please set the correct command line options for
+-#   threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
+ CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
+ 
+ # When compiling for the Windows platform, the threads library is named
+ # differently.
+ case $host_os in
+-  (*mingw*)
+-    BOOST_FIND_LIB([thread_win32], [$1],
+-                   [boost/thread.hpp], [boost::thread t; boost::mutex m;])
+-    BOOST_THREAD_LDFLAGS=$BOOST_THREAD_WIN32_LDFLAGS
+-    BOOST_THREAD_LDPATH=$BOOST_THREAD_WIN32_LDPATH
+-    BOOST_THREAD_LIBS=$BOOST_THREAD_WIN32_LIBS
+-  ;;
+-  (*)
+-    BOOST_FIND_LIB([thread], [$1],
+-                   [boost/thread.hpp], [boost::thread t; boost::mutex m;])
+-  ;;
++  (*mingw*) boost_thread_lib_ext=_win32;;
+ esac
++BOOST_FIND_LIBS([thread], [thread$boost_thread_lib_ext],
++                [$1],
++                [boost/thread.hpp], [boost::thread t; boost::mutex m;])
+ 
+ BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag"
+ BOOST_THREAD_LDFLAGS="$BOOST_SYSTEM_LDFLAGS"
+ BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
+-LIBS=$boost_threads_save_LIBS
+-LDFLAGS=$boost_threads_save_LDFLAGS
+-CPPFLAGS=$boost_threads_save_CPPFLAGS
+-])# BOOST_THREADS
++LIBS=$boost_thread_save_LIBS
++LDFLAGS=$boost_thread_save_LDFLAGS
++CPPFLAGS=$boost_thread_save_CPPFLAGS
++])# BOOST_THREAD
++
++AU_ALIAS([BOOST_THREADS], [BOOST_THREAD])
+ 
+ 
+ # BOOST_TOKENIZER()
+@@ -935,10 +1132,23 @@ BOOST_DEFUN([Variant],
+ BOOST_FIND_HEADER([boost/variant.hpp])])
+ 
+ 
++# BOOST_POINTER_CONTAINER()
++# ------------------------
++# Look for Boost.PointerContainer
++BOOST_DEFUN([Pointer_Container],
++[BOOST_FIND_HEADER([boost/ptr_container/ptr_deque.hpp])
++BOOST_FIND_HEADER([boost/ptr_container/ptr_list.hpp])
++BOOST_FIND_HEADER([boost/ptr_container/ptr_vector.hpp])
++BOOST_FIND_HEADER([boost/ptr_container/ptr_array.hpp])
++BOOST_FIND_HEADER([boost/ptr_container/ptr_set.hpp])
++BOOST_FIND_HEADER([boost/ptr_container/ptr_map.hpp])
++])# BOOST_POINTER_CONTAINER
++
++
+ # BOOST_WAVE([PREFERRED-RT-OPT])
+ # ------------------------------
+ # NOTE: If you intend to use Wave/Spirit with thread support, make sure you
+-# call BOOST_THREADS first.
++# call BOOST_THREAD first.
+ # Look for Boost.Wave.  For the documentation of PREFERRED-RT-OPT, see the
+ # documentation of BOOST_FIND_LIB above.
+ BOOST_DEFUN([Wave],
+@@ -973,8 +1183,16 @@ BOOST_DEFUN([Xpressive],
+ 
+ # _BOOST_PTHREAD_FLAG()
+ # ---------------------
+-# Internal helper for BOOST_THREADS.  Based on ACX_PTHREAD:
+-# http://autoconf-archive.cryp.to/acx_pthread.html
++# Internal helper for BOOST_THREAD.  Computes boost_cv_pthread_flag
++# which must be used in CPPFLAGS and LIBS.
++#
++# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
++# boost/thread.hpp will trigger a #error if -pthread isn't used:
++#   boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
++#   is not turned on. Please set the correct command line options for
++#   threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
++#
++# Based on ACX_PTHREAD: http://autoconf-archive.cryp.to/acx_pthread.html
+ AC_DEFUN([_BOOST_PTHREAD_FLAG],
+ [AC_REQUIRE([AC_PROG_CXX])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+@@ -1042,6 +1260,14 @@ AC_LANG_POP([C++])dnl
+ m4_define([_BOOST_gcc_test],
+ ["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
+ 
++# _BOOST_mingw_test(MAJOR, MINOR)
++# -----------------------------
++# Internal helper for _BOOST_FIND_COMPILER_TAG.
++m4_define([_BOOST_mingw_test],
++["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC && \
++  (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
++         || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw$1$2"])dnl
++
+ 
+ # _BOOST_FIND_COMPILER_TAG()
+ # --------------------------
+@@ -1051,7 +1277,8 @@ m4_define([_BOOST_gcc_test],
+ AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
+ [AC_REQUIRE([AC_PROG_CXX])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+-AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], [boost_cv_lib_tag],
++AC_CACHE_CHECK([for the toolset name used by Boost for $CXX],
++               [boost_cv_lib_tag],
+ [boost_cv_lib_tag=unknown
+ if test x$boost_cv_inc_path != xno; then
+   AC_LANG_PUSH([C++])dnl
+@@ -1069,14 +1296,31 @@ if test x$boost_cv_inc_path != xno; then
+   # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
+   # the same defines as GCC's).
+   for i in \
++    _BOOST_mingw_test(5, 1) \
++    _BOOST_gcc_test(5, 1) \
++    _BOOST_mingw_test(5, 0) \
++    _BOOST_gcc_test(5, 0) \
++    _BOOST_mingw_test(4, 10) \
++    _BOOST_gcc_test(4, 10) \
++    _BOOST_mingw_test(4, 9) \
++    _BOOST_gcc_test(4, 9) \
++    _BOOST_mingw_test(4, 8) \
+     _BOOST_gcc_test(4, 8) \
++    _BOOST_mingw_test(4, 7) \
+     _BOOST_gcc_test(4, 7) \
++    _BOOST_mingw_test(4, 6) \
+     _BOOST_gcc_test(4, 6) \
++    _BOOST_mingw_test(4, 5) \
+     _BOOST_gcc_test(4, 5) \
++    _BOOST_mingw_test(4, 4) \
+     _BOOST_gcc_test(4, 4) \
++    _BOOST_mingw_test(4, 3) \
+     _BOOST_gcc_test(4, 3) \
++    _BOOST_mingw_test(4, 2) \
+     _BOOST_gcc_test(4, 2) \
++    _BOOST_mingw_test(4, 1) \
+     _BOOST_gcc_test(4, 1) \
++    _BOOST_mingw_test(4, 0) \
+     _BOOST_gcc_test(4, 0) \
+     "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
+      && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
+@@ -1142,6 +1386,7 @@ fi])dnl end of AC_CACHE_CHECK
+ # Thread) flavors of Boost.  Sets boost_guess_use_mt accordingly.
+ AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
+ [# Check whether we do better use `mt' even though we weren't ask to.
++AC_LANG_PUSH([C++])dnl
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ #if defined _REENTRANT || defined _MT || defined __MT__
+ /* use -mt */
+@@ -1149,6 +1394,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ # error MT not needed
+ #endif
+ ]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
++AC_LANG_POP([C++])dnl
+ ])
+ 
+ # _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+@@ -1172,11 +1418,11 @@ boost_use_source=:
+ test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
+   _AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
+ AS_IF([_AC_DO_STDERR($ac_link) && {
+-	 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
+-	 test ! -s conftest.err
++         test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
++         test ! -s conftest.err
+        } && test -s conftest$ac_exeext && {
+-	 test "$cross_compiling" = yes ||
+-	 $as_executable_p conftest$ac_exeext
++         test "$cross_compiling" = yes ||
++         $as_executable_p conftest$ac_exeext
+ dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
+        }],
+       [$2],

package/cc-tool/cc-tool.mk

@@ -11,6 +11,9 @@ CC_TOOL_LICENSE = GPLv2
 CC_TOOL_LICENSE_FILES = COPYING
 CC_TOOL_DEPENDENCIES = boost libusb
 
+# we're patching boost.m4
+CC_TOOL_AUTORECONF = YES
+
 # Configure script "discovers" boost in /usr/local if not given explicitly
 CC_TOOL_CONF_OPTS = --with-boost=$(STAGING_DIR)/usr