source: downloads/boost_1_34_1/tools/build/v2/test/dependency_test.py @ 32

#!/usr/bin/python

from BoostBuild import Tester, List

t = Tester()

t.set_tree("dependency-test")
t.run_build_system()
# Check that main target 'c' was able to find 'x.h' from
# 'a's dependency graph
t.expect_addition("bin/$toolset/debug/c.exe")

# Check handling of first level includes.

# Both 'a' and 'b' include "a.h" and should be updated
t.touch("a.h")
t.run_build_system()

t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.expect_touch("bin/$toolset/debug/b.exe")
t.expect_touch("bin/$toolset/debug/b.obj")
# Now, <dependency> does not add dependency.
# It sound weird, but is intentional. Need
# to rename <dependency> eventually.
#t.expect_touch("bin/$toolset/debug/main-target-c/c.exe")
t.ignore("*.tds")
t.expect_nothing_more()

# Only 'a' include <a.h> and should be updated
t.touch("src1/a.h")
t.run_build_system()

t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.ignore("*.tds")
t.expect_nothing_more()

# "src/a.h" includes "b.h" (in the same dir)
t.touch("src1/b.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.ignore("*.tds")
t.expect_nothing_more()

# included by "src/b.h". We had a bug: file included via "",
# like "b.h" is in this case was not scanned at all.
t.touch("src1/c.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.exe")

t.touch("b.h")
t.run_build_system()
t.expect_nothing_more()

# Test dependency on generated header.
# TODO: we have also to check that generated header is found correctly
# if it is different for different subvariants. Lacking any toolset
# support, this check will be implemented later.
t.touch("x.foo")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")

# Check that generated headers are scanned for dependencies as well
t.touch("src1/z.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")

# Regression test: on windows, <includes> with absolute paths
# were not considered when scanning dependencies.

t.rm(".")

t.write("Jamroot", """
path-constant TOP : . ;
exe app : main.cpp
        : <include>$(TOP)/include
         ;
""");

t.write("main.cpp", """
#include <dir/header.h>

int main() { return 0; }

""")

t.write("include/dir/header.h", "")
t.run_build_system()
t.expect_addition("bin/$toolset/debug/main.obj")

t.touch("include/dir/header.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/main.obj")



t.cleanup()