src/etc/mklldeps.py

   1 # Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
   2 # file at the top-level directory of this distribution and at
   3 # http://rust-lang.org/COPYRIGHT.
   4 #
   5 # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 # option. This file may not be copied, modified, or distributed
   9 # except according to those terms.
  10
  11 import os
  12 import sys
  13 import subprocess
  14 import itertools
  15 from os import path
  16
  17 f = open(sys.argv[1], 'wb')
  18
  19 components = sys.argv[2].split(' ')
  20 components = [i for i in components if i]  # ignore extra whitespaces
  21 enable_static = sys.argv[3]
  22 llconfig = sys.argv[4]
  23
  24 f.write("""// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
  25 // file at the top-level directory of this distribution and at
  26 // http://rust-lang.org/COPYRIGHT.
  27 //
  28 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  29 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  30 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  31 // option. This file may not be copied, modified, or distributed
  32 // except according to those terms.
  33
  34 // WARNING: THIS IS A GENERATED FILE, DO NOT MODIFY
  35 //          take a look at src/etc/mklldeps.py if you're interested
  36 """)
  37
  38 def run(args):
  39     proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  40     out, err = proc.communicate()
  41
  42     if err:
  43         print("failed to run llconfig: args = `{}`".format(args))
  44         print(err)
  45         sys.exit(1)
  46     return out
  47
  48 f.write("\n")
  49
  50 version = run([llconfig, '--version']).strip()
  51
  52 # LLVM libs
  53 if version < '3.5':
  54     args = [llconfig, '--libs']
  55 else:
  56     args = [llconfig, '--libs', '--system-libs']
  57
  58 args.extend(components)
  59 out = run(args)
  60 for lib in out.strip().replace("\n", ' ').split(' '):
  61     lib = lib.strip()[2:] # chop of the leading '-l'
  62     f.write("#[link(name = \"" + lib + "\"")
  63     # LLVM libraries are all static libraries
  64     if 'LLVM' in lib:
  65         f.write(", kind = \"static\"")
  66     f.write(")]\n")
  67
  68 # llvm-config before 3.5 didn't have a system-libs flag
  69 if version < '3.5':
  70     if os == 'win32':
  71         f.write("#[link(name = \"imagehlp\")]")
  72
  73 # LLVM ldflags
  74 out = run([llconfig, '--ldflags'])
  75 for lib in out.strip().split(' '):
  76     if lib[:2] == "-l":
  77         f.write("#[link(name = \"" + lib[2:] + "\")]\n")
  78
  79 # C++ runtime library
  80 out = run([llconfig, '--cxxflags'])
  81 if enable_static == '1':
  82     assert('stdlib=libc++' not in out)
  83     f.write("#[link(name = \"stdc++\", kind = \"static\")]\n")
  84 else:
  85     if 'stdlib=libc++' in out:
  86         f.write("#[link(name = \"c++\")]\n")
  87     else:
  88         f.write("#[link(name = \"stdc++\")]\n")
  89
  90 # Attach everything to an extern block
  91 f.write("extern {}\n")