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diff --git a/src/boost/libs/iostreams/build/Jamfile.v2 b/src/boost/libs/iostreams/build/Jamfile.v2
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+# Boost.Iostreams Library Build Jamfile
+
+# (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+# (C) Copyright 2004-2007 Jonathan Turkanis
+# Distributed under the Boost Software License, Version 1.0. (See accompanying 
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
+
+# See http://www.boost.org/libs/iostreams for documentation.
+
+project /boost/iostreams : source-location ../src ;
+
+# The biggest trick in this Jamfile is to link to zlib and bzip2 when
+# needed. To configure that, a number of variables are used, which must
+# be set by user with 'path-constant' either in Boost's root Jamfile, or
+# in user-config.jam.
+
+# For each library with either link to existing binary, or build
+# a library from the sources.
+
+import modules ;
+import os ;
+import path ;
+import ac ;
+local debug = [ MATCH (--debug-configuration) : [ modules.peek : ARGV ] ] ;
+
+local libraries-to-install = boost_iostreams ;
+
+for local v in NO_COMPRESSION 
+               NO_ZLIB
+               NO_BZIP2
+               NO_LZMA
+               NO_ZSTD
+{
+    $(v) = [ modules.peek : $(v) ] ;
+}
+
+if $(NO_COMPRESSION) != 1 && $(NO_ZLIB) != 1
+{
+    using zlib : : <build-name>boost_zlib <tag>@tag ;
+    zlib-requirements =
+        [ ac.check-library /zlib//zlib : <library>/zlib//zlib
+          <source>zlib.cpp <source>gzip.cpp ] ;
+
+    if [ os.environ ZLIB_SOURCE ]
+    {
+        alias boost_zlib : /zlib//zlib ;
+        libraries-to-install += boost_zlib ;
+    }
+}
+else
+{
+    if $(debug)
+    {
+        ECHO "notice: iostreams: not using zlib compression " ;
+    }
+}
+
+if $(NO_COMPRESSION) != 1 && $(NO_BZIP2) != 1
+{
+    using bzip2 : : <build-name>boost_bzip2 <tag>@tag ;
+    bzip2-requirements =
+        [ ac.check-library /bzip2//bzip2 : <library>/bzip2//bzip2
+          <source>bzip2.cpp ] ;
+
+    if [ os.environ BZIP2_SOURCE ]
+    {
+        alias boost_bzip2 : /bzip2//bzip2 ;
+        libraries-to-install += boost_bzip2 ;
+    }
+}
+else
+{
+    if $(debug)
+    {
+        ECHO "notice: iostreams: not using bzip compression " ;
+    }
+}
+
+if $(NO_COMPRESSION) != 1 && $(NO_LZMA) != 1
+{
+    using lzma ;
+
+    exe has_lzma_cputhreads : ../build/has_lzma_cputhreads.cpp /lzma//lzma ;
+    explicit has_lzma_cputhreads ;
+
+    lzma-requirements =
+        [ ac.check-library /lzma//lzma : <library>/lzma//lzma
+          <source>lzma.cpp ]
+        [ check-target-builds has_lzma_cputhreads
+            : : <define>BOOST_IOSTREAMS_LZMA_NO_MULTITHREADED=1 ] ;
+}
+else
+{
+    if $(debug)
+    {
+        ECHO "notice: iostreams: not using lzma compression " ;
+    }
+}
+
+if $(NO_COMPRESSION) != 1 && $(NO_ZSTD) != 1
+{
+    using zstd ;
+    zstd-requirements =
+        [ ac.check-library /zstd//zstd : <library>/zstd//zstd
+          <source>zstd.cpp ] ;
+}
+else
+{
+    if $(debug)
+    {
+        ECHO "notice: iostreams: not using zstd compression " ;
+    }
+}
+
+local sources = file_descriptor.cpp mapped_file.cpp ;
+
+lib boost_iostreams 
+    : $(sources) 
+    : <link>shared:<define>BOOST_IOSTREAMS_DYN_LINK=1 
+      <define>BOOST_IOSTREAMS_USE_DEPRECATED
+      $(zlib-requirements)
+      $(bzip2-requirements)
+      $(lzma-requirements)
+      $(zstd-requirements)
+    :
+    : <link>shared:<define>BOOST_IOSTREAMS_DYN_LINK=1
+    ;
+
+boost-install $(libraries-to-install) ;