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build/test/pch.py
Nikita Kniazev 943a28a8ba Fix pch path conflict on GCC (#563)
* Follow-up to removed restriction of pch naming on GCC

* Fix pch path conflict on GCC

gcc-pch-generator rewrites target name to a value derived from a header name
and this cases path conflict if multiple pch are created from the same header.

hello.cpp is duplicated in the test for the same reason but for `exe` target --
`exe hello-afx : hello.cpp ;` uses `hello.o` for object file name.
2020-04-03 20:27:41 -05:00

66 lines
1.6 KiB
Python

#!/usr/bin/python
# Copyright 2006 Vladimir Prus.
# Distributed under the Boost Software License, Version 1.0. (See
# accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
import BoostBuild
from time import sleep
t = BoostBuild.Tester()
t.write("jamroot.jam", """
import pch ;
project : requirements <warnings-as-errors>on ;
cpp-pch pch : pch.hpp : <toolset>msvc:<source>pch.cpp <include>. ;
cpp-pch pch-afx : pch.hpp : <define>HELLO <toolset>msvc:<source>pch.cpp <include>. ;
exe hello : hello.cpp pch : <include>. ;
exe hello-afx : hello-afx.cpp pch-afx : <define>HELLO <include>. ;
""")
t.write("pch.hpp.bad", """
THIS WILL NOT COMPILE
""")
# Note that pch.hpp is written after pch.hpp.bad, so its timestamp will not be
# less than timestamp of pch.hpp.bad.
sleep(1)
t.write("pch.hpp", """
#undef HELLO
class TestClass
{
public:
TestClass( int, int ) {}
};
""")
t.write("pch.cpp", """#include <pch.hpp>
""")
for name in ("hello.cpp", "hello-afx.cpp"):
t.write(name, """#include <pch.hpp>
int main() { TestClass c(1, 2); }
""")
t.run_build_system()
t.expect_addition("bin/$toolset/debug*/hello.exe")
t.expect_addition("bin/$toolset/debug*/hello-afx.exe")
# Now make the header unusable, without changing timestamp. If everything is OK,
# B2 will not recreate PCH, and compiler will happily use pre-compiled
# header, not noticing that the real header is bad.
t.copy_preserving_timestamp("pch.hpp.bad", "pch.hpp")
t.rm("bin/$toolset/debug*/hello.obj")
t.rm("bin/$toolset/debug*/hello-afx.obj")
t.run_build_system()
t.expect_addition("bin/$toolset/debug*/hello.obj")
t.expect_addition("bin/$toolset/debug*/hello-afx.obj")
t.cleanup()