ceph/src/boost/tools/build/test/pch.py

   1 #!/usr/bin/python
   2
   3 # Copyright 2006 Vladimir Prus.
   4 # Distributed under the Boost Software License, Version 1.0. (See
   5 # accompanying file LICENSE_1_0.txt or copy at
   6 # http://www.boost.org/LICENSE_1_0.txt)
   7
   8 import BoostBuild
   9 from time import sleep
  10
  11
  12 t = BoostBuild.Tester()
  13
  14 t.write("jamroot.jam", """
  15 import pch ;
  16 cpp-pch pch : pch.hpp : <toolset>msvc:<source>pch.cpp <include>. ;
  17 exe hello : hello.cpp pch : <include>. ;
  18 """)
  19
  20 t.write("pch.hpp.bad", """
  21 THIS WILL NOT COMPILE
  22 """)
  23
  24 # Note that pch.hpp is written after pch.hpp.bad, so its timestamp will not be
  25 # less than timestamp of pch.hpp.bad.
  26 sleep(1)
  27 t.write("pch.hpp", """
  28 class TestClass
  29 {
  30 public:
  31     TestClass( int, int ) {}
  32 };
  33 """)
  34
  35 t.write("pch.cpp", """#include <pch.hpp>
  36 """)
  37
  38 t.write("hello.cpp", """#include <pch.hpp>
  39 int main() { TestClass c(1, 2); }
  40 """)
  41
  42 t.run_build_system()
  43 t.expect_addition("bin/$toolset/debug*/hello.exe")
  44
  45
  46 # Now make the header unusable, without changing timestamp. If everything is OK,
  47 # Boost.Build will not recreate PCH, and compiler will happily use pre-compiled
  48 # header, not noticing that the real header is bad.
  49
  50 t.copy_preserving_timestamp("pch.hpp.bad", "pch.hpp")
  51
  52 t.rm("bin/$toolset/debug/hello.obj")
  53 t.rm("bin/$toolset/debug/*/hello.obj")
  54
  55 t.run_build_system()
  56 t.expect_addition("bin/$toolset/debug*/hello.obj")
  57
  58 t.cleanup()