rust/src/etc/mklldeps.py
Luca Bruno 1e2f572fb6 librustc: add LLVM LDFLAGS to deps
This commit let librustc automatically pickup LDFLAGS dependencies
inherited from LLVM, which may otherwise result in undefined
references to external symbols under certain linking environment.

A symptom of this issue is eg. a failure when trying to link against
librustc (due to unresolved ffi_*i symbols), while using a system-wide
LLVM.

Signed-off-by: Luca Bruno <lucab@debian.org>
2014-03-02 17:29:54 +01:00

90 lines
2.8 KiB
Python

# Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution and at
# http://rust-lang.org/COPYRIGHT.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.
import os
import sys
import subprocess
f = open(sys.argv[1], 'wb')
components = sys.argv[2].split(' ')
components = [i for i in components if i] # ignore extra whitespaces
f.write("""// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// WARNING: THIS IS A GENERATED FILE, DO NOT MODIFY
// take a look at src/etc/mklldeps.py if you're interested
""")
for llconfig in sys.argv[3:]:
f.write("\n")
proc = subprocess.Popen([llconfig, '--host-target'], stdout = subprocess.PIPE)
out, err = proc.communicate()
arch, os = out.split('-', 1)
arch = 'x86' if arch == 'i686' or arch == 'i386' else arch
if 'darwin' in os:
os = 'macos'
elif 'linux' in os:
os = 'linux'
elif 'freebsd' in os:
os = 'freebsd'
elif 'android' in os:
os = 'android'
elif 'win' in os or 'mingw' in os:
os = 'win32'
cfg = [
"target_arch = \"" + arch + "\"",
"target_os = \"" + os + "\"",
]
f.write("#[cfg(" + ', '.join(cfg) + ")]\n")
# LLVM libs
args = [llconfig, '--libs']
args.extend(components)
proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = proc.communicate()
if err:
print("failed to run llconfig: args = `{}`".format(args))
sys.exit(1)
for lib in out.strip().split(' '):
lib = lib[2:] # chop of the leading '-l'
f.write("#[link(name = \"" + lib + "\", kind = \"static\")]\n")
# LLVM ldflags
args = [llconfig, '--ldflags']
proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = proc.communicate()
if err:
print("failed to run llconfig: args = `{}`".format(args))
sys.exit(1)
for lib in out.strip().split(' '):
if lib[:2] == "-l":
f.write("#[link(name = \"" + lib[2:] + "\")]\n")
#extra
f.write("#[link(name = \"stdc++\")]\n")
if os == 'win32':
f.write("#[link(name = \"imagehlp\")]\n")
f.write("extern {}\n")