From 7df44f75a749d69c21a9aa7924dda48a3fbeb578 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sun, 26 Nov 2017 14:43:59 -0800
Subject: [PATCH] Upgrade bundled clang+llvm to 5.0.0, fixes #41

---
 wscript | 50 +++++++++++++++++++-------------------------------
 1 file changed, 19 insertions(+), 31 deletions(-)

diff --git a/wscript b/wscript
index 6c1fe73b..daad26b2 100644
--- a/wscript
+++ b/wscript
@@ -7,11 +7,11 @@ except ImportError:
     from urllib.request import urlopen # Python 3
 
 import os.path
-from subprocess import call
+import subprocess
 import sys
 
-VERSION='0.0.1'
-APPNAME='indexer'
+VERSION = '0.0.1'
+APPNAME = 'cquery'
 
 top = '.'
 out = 'build'
@@ -21,40 +21,27 @@ out = 'build'
 #   http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu16.04.tar.xz
 #   http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
 #   http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-x86_64-apple-darwin.tar.xz
-# TODO: windows support (it's an exe!)
 
-global CLANG_PLATFORM_NAME
-global CLANG_TARBALL_PLATFORM_NAME
+# Version of clang to download and use.
+CLANG_VERSION = '5.0.0'
 
-if sys.platform == 'linux' or sys.platform == 'linux2':
-  #CLANG_PLATFORM_NAME = 'linux-x86_64-ubuntu14.04'
-  CLANG_PLATFORM_NAME = 'x86_64-linux-gnu-ubuntu-14.04'
-  CLANG_TARBALL_PLATFORM_NAME = 'clang+llvm'
-elif sys.platform == 'darwin':
-  CLANG_PLATFORM_NAME = 'x86_64-apple-darwin'
-  CLANG_TARBALL_PLATFORM_NAME = 'clang+llvm'
+if sys.platform == 'darwin':
+  CLANG_TARBALL_NAME = 'clang+llvm-{0}-x86_64-apple-darwin'.format(CLANG_VERSION)
+elif sys.platform.startswith('freebsd'):
+  CLANG_TARBALL_NAME = 'clang+llvm-{0}-amd64-unknown-freebsd10'.format(CLANG_VERSION)
+# It is either 'linux2' or 'linux3' before Python 3.3
+elif sys.platform.startswith('linux'):
+  # These executable depend on libtinfo.so.5
+  CLANG_TARBALL_NAME = 'clang+llvm-{0}-linux-x86_64-ubuntu14.04'.format(CLANG_VERSION)
 else:
+  # TODO: windows support (it's an exe!)
   sys.stderr.write('ERROR: Unknown platform {0}\n'.format(sys.platform))
   sys.exit(1)
 
-# Version of clang to download and use.
-#CLANG_VERSION = '5.0.0'
-CLANG_VERSION = '4.0.0'
-# Tarball name on clang servers that should be used.
-CLANG_TARBALL_NAME  = '{0}-{1}-{2}'.format(CLANG_TARBALL_PLATFORM_NAME, CLANG_VERSION, CLANG_PLATFORM_NAME)
 # Directory clang has been extracted to.
 CLANG_DIRECTORY = '{0}/{1}'.format(out, CLANG_TARBALL_NAME)
 # URL of the tarball to download.
 CLANG_TARBALL_URL = 'http://releases.llvm.org/{0}/{1}.tar.xz'.format(CLANG_VERSION, CLANG_TARBALL_NAME)
-# Path to locally tarball.
-CLANG_TARBALL_LOCAL_PATH = '{0}.tar.xz'.format(CLANG_DIRECTORY)
-
-# Directory libcxx will be extracted to.
-LIBCXX_DIRECTORY = '{0}/libcxx'.format(out)
-# URL to download libcxx from.
-LIBCXX_URL = 'http://releases.llvm.org/4.0.0/libcxx-4.0.0.src.tar.xz'
-# Absolute path for where to download the URL.
-LIBCXX_LOCAL_PATH = '{0}/libcxx-4.0.0.src.tar.xz'.format(out)
 
 from waflib.Tools.compiler_cxx import cxx_compiler
 cxx_compiler['linux'] = ['clang++', 'g++']
@@ -69,7 +56,8 @@ def options(opt):
   grp.add_option('--clang-prefix', dest='clang_prefix', default='',
                  help='enable fallback configuration method by specifying a clang installation prefix (e.g. /opt/llvm)')
 
-def download_and_extract(destdir, dest, url):
+def download_and_extract(destdir, url):
+  dest = destdir + '.tar.xz'
   # Download and save the compressed tarball as |compressed_file_name|.
   if not os.path.isfile(dest):
     print('Downloading tarball')
@@ -86,7 +74,7 @@ def download_and_extract(destdir, dest, url):
   if not os.path.isdir(destdir):
     print('Extracting')
     # TODO: make portable.
-    call(['tar', 'xf', dest, '-C', out])
+    subprocess.call(['tar', '-x', '-C', out, '-f', dest])
   else:
     print('Found extracted at {0}'.format(destdir))
 
@@ -126,7 +114,7 @@ def configure(conf):
 
   else:
     print('Checking for clang')
-    download_and_extract(CLANG_DIRECTORY, CLANG_TARBALL_LOCAL_PATH, CLANG_TARBALL_URL)
+    download_and_extract(CLANG_DIRECTORY, CLANG_TARBALL_URL)
     clang_node = conf.path.find_dir(CLANG_DIRECTORY)
 
     conf.check_cxx(uselib_store='clang',
@@ -165,7 +153,7 @@ def build(bld):
   cc_files = bld.path.ant_glob(['src/*.cc'])
 
   lib = []
-  if sys.platform == 'linux' or sys.platform == 'linux2':
+  if sys.platform.startswith('linux'):
     lib.append('rt')
     lib.append('pthread')
     lib.append('dl')