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
  10
  11 t = BoostBuild.Tester()
  12
  13 t.write("jamroot.jam", """
  14 import pch ;
  15 cpp-pch pch : pch.hpp : <toolset>msvc:<source>pch.cpp <include>. ;
  16 exe hello : hello.cpp pch : <include>. ;
  17 """)
  18
  19 t.write("pch.hpp.bad", """
  20 THIS WILL NOT COMPILE
  21 """)
  22
  23 # Note that pch.hpp is written after pch.hpp.bad, so its timestamp will not be
  24 # less than timestamp of pch.hpp.bad.
  25 t.write("pch.hpp", """
  26 class TestClass
  27 {
  28 public:
  29     TestClass( int, int ) {}
  30 };
  31 """)
  32
  33 t.write("pch.cpp", """#include <pch.hpp>
  34 """)
  35
  36 t.write("hello.cpp", """#include <pch.hpp>
  37 int main() { TestClass c(1, 2); }
  38 """)
  39
  40 t.run_build_system()
  41 t.expect_addition("bin/$toolset/debug/hello.exe")
  42
  43
  44 # Now make the header unusable, without changing timestamp. If everything is OK,
  45 # Boost.Build will not recreate PCH, and compiler will happily use pre-compiled
  46 # header, not noticing that the real header is bad.
  47
  48 t.copy_preserving_timestamp("pch.hpp.bad", "pch.hpp")
  49
  50 t.rm("bin/$toolset/debug/hello.obj")
  51
  52 t.run_build_system()
  53 t.expect_addition("bin/$toolset/debug/hello.obj")
  54
  55 t.cleanup()