early-access version 3088

externals/vcpkg/packages/boost-build_x64-windows/tools/boost-build/example/time/hello.cpp

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+//  Copyright (c) 2003 Vladimir Prus
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE.txt or copy at
+//  https://www.bfgroup.xyz/b2/LICENSE.txt)
+
+#include <iostream>
+
+int main()
+{
+    std::cout << "Hello!\n";
+}

externals/vcpkg/packages/boost-build_x64-windows/tools/boost-build/example/time/jamroot.jam

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+#|
+Distributed under the Boost Software License, Version 1.0. (See
+accompanying file LICENSE.txt or copy at
+https://www.bfgroup.xyz/b2/LICENSE.txt)
+|#
+
+#[jamroot
+#<< Import the time rule from the testing module.
+import testing ;
+
+#<< The target we are timing just builds a hello program.
+exe hello : hello.cpp ;
+
+#<< This target records the time to build the `hello` target.
+time hello.time : hello ;
+#]

externals/vcpkg/packages/boost-build_x64-windows/tools/boost-build/example/time/readme.qbk

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+[/
+Copyright 2017 Rene Rivera
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section Time Action]
+
+This example shows how to use the `testing.time` utility to show time
+information for building a target.
+
+Files:
+
+* [@../../example/time/jamroot.jam jamroot.jam]
+* [@../../example/time/hello.cpp hello.cpp]
+
+Our `jamroot.jam` specifies the target we build and the `time`
+declaration to time the target we build:
+
+[import jamroot.jam]
+
+[jamroot]
+
+Building the example yields:
+
+[teletype]
+```
+> cd /example/time
+> b2
+...found 9 targets...
+...updating 6 targets...
+common.mkdir bin
+common.mkdir bin/clang-darwin-4.2.1
+common.mkdir bin/clang-darwin-4.2.1/debug
+clang-darwin.compile.c++ bin/clang-darwin-4.2.1/debug/hello.o
+clang-darwin.link bin/clang-darwin-4.2.1/debug/hello
+testing.time bin/clang-darwin-4.2.1/debug/hello.time
+user: [hello] 0.013509
+system: [hello] 0.045641
+clock: [hello] 0.000000
+...updated 6 targets...
+```
+
+[note The actual paths in the `bin` sub-directory will depend on your
+toolset.]
+
+[endsect]