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< title > The MPL Reference Manual: BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ title >
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< td class = "header-group page-location" >< a href = "../refmanual.html" class = "navigation-link" > Front Page</ a > / < a href = "./macros.html" class = "navigation-link" > Macros</ a > / < a href = "./configuration.html" class = "navigation-link" > Configuration</ a > / < a href = "./cfg-no-preprocessed-headers.html" class = "navigation-link" > BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ a ></ td >
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< div class = "section" id = "boost-mpl-cfg-no-preprocessed-headers" >
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< h1 >< a class = "toc-backref" href = "./configuration.html#id1598" > BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ a ></ h1 >
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< span id = "boost-mpl-cfg-no-preprocessed" ></ span >< h3 >< a class = "subsection-title" href = "#synopsis" name = "synopsis" > Synopsis</ a ></ h3 >
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// #define < a href = "./cfg-no-preprocessed-headers.html" class = "identifier" > BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ a >
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< h3 >< a class = "subsection-title" href = "#description" name = "description" > Description</ a ></ h3 >
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< p >< tt class = "literal" >< span class = "pre" >< a href = "./cfg-no-preprocessed-headers.html" class = "identifier" > BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ a ></ span ></ tt > is an boolean configuration macro
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regulating library's internal use of preprocessed headers. When defined, it
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instructs the MPL to discard the pre-generated headers found in
< tt class = "literal" >< span class = "pre" > boost/mpl/aux_/preprocessed</ span ></ tt > directory and use < a class = "reference external" href = "http://boost-consulting.com/tmpbook/preprocessor.html" target = "_top" > preprocessor
metaprogramming</ a > techniques to generate the necessary versions of the
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library components on the fly.</ p >
< p > In this implementation of the library, the macro is not defined by default.
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To change the default configuration, define
< tt class = "literal" >< span class = "pre" >< a href = "./cfg-no-preprocessed-headers.html" class = "identifier" > BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</ a ></ span ></ tt > before including any library
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header.</ p >
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< h3 >< a class = "subsection-title" href = "#see-also" name = "see-also" > See also</ a ></ h3 >
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< p >< a class = "reference internal" href = "./macros.html" > Macros</ a > , < a class = "reference internal" href = "./configuration.html" > Configuration</ a ></ p >
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<!-- Macros/Configuration//BOOST_MPL_CFG_NO_HAS_XXX |20 -->
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< td >< div class = "copyright-footer" >< div class = "copyright" > Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</ div >
Distributed under the Boost Software License, Version 1.0. (See accompanying
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