library_order.py

C++的一个好库。。。现在很流行

#!/usr/bin/python

#  Copyright (C) Vladimir Prus 2004. Permission to copy, use, modify, sell and
#  distribute this software is granted provided this copyright notice appears in
#  all copies. This software is provided "as is" without express or implied
#  warranty, and with no claim as to its suitability for any purpose.

from BoostBuild import Tester, List
import string


#  Test that on compilers which are sensitive to library order on
#  linker's command line, we generate the right order.
t = Tester()

t.write("a.cpp", """ 
void b();

void a()
{
   b();
}

""")

t.write("b.cpp", """ 
void c();

void b()
{
    c();
} 
""")

t.write("c.cpp", """ 
void d();

void c() 
{
    d();    
}

""")

t.write("d.cpp", """ 
void d() {}

""")

# The order of libraries in 'main' is crafted so that
# we get error unless we do something about the order ourselfs.
t.write("Jamfile", """ 
exe main : main.cpp libd libc libb liba ;
lib libd : d.cpp ;
lib libc : c.cpp : <link>static <use>libd ;
lib libb : b.cpp : <use>libc ;
lib liba : a.cpp : <use>libb ;

""")

t.write("main.cpp", """ 
void a();

int main()
{
    a();
    return 0;
}

""")

t.write("project-root.jam", """ 
""")

t.run_build_system()
t.expect_addition("bin/$toolset/debug/main.exe")

# Test the order between searched libraries
t.write("Jamfile", """
exe main : main.cpp png z ;
lib png : z : <name>png ;
lib z : : <name>zzz ;
""")

t.run_build_system("-a -n -d+2")
t.fail_test(string.find(t.stdout(), "png") > string.find(t.stdout(), "zzz"))

t.write("Jamfile", """
exe main : main.cpp png z ;
lib png : : <name>png ;
lib z : png : <name>zzz ;
""")

t.run_build_system("-a -n -d+2")
t.fail_test(string.find(t.stdout(), "png") < string.find(t.stdout(), "zzz"))

# Test the order between prebuilt libraries

t.write("first.a", "")
t.write("second.a", "")

t.write("Jamfile", """
exe main : main.cpp first second ;
lib first : second : <file>first.a ;
lib second : : <file>second.a ;
""")

t.run_build_system("-a -n -d+2")
t.fail_test(string.find(t.stdout(), "first") > string.find(t.stdout(), "second"))

t.write("Jamfile", """
exe main : main.cpp first second ;
lib first : : <file>first.a ;
lib second : first : <file>second.a ;
""")

t.run_build_system("-a -n -d+2")
t.fail_test(string.find(t.stdout(), "first") < string.find(t.stdout(), "second"))




t.cleanup()