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WIESS 2000 Abstract
Automatic Precompiled
Headers: Speeding up C++ Application Build Times
Tara Krishnaswamy, Internet & IA-64 Foundations Lab,
HP
Abstract
This paper describes the crucial design and
implementation issues that arise in building a fully automatic
precompiled header mechanism for compiling industrial-strength C and
C++ applications. The key challenges include designing the
Makefile-transparent automation, determining the precompile-able
region, capturing the compile environment and verifying it and
addressing the correctness issues involved in using precompiled
headers. The ensuing discussion treats the internals of the actual
dumping and loading of precompiled headers as a black-box beyond a
brief high-level description. An automatic precompiled header
mechanism has been implemented in aCC, the HP ANSI C++ compiler, and
the results of compiling real applications show that it achieves
significant speedup in compile-times of real
applications.
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