libffi merge

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194722 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 153 insertions, 0 deletions

diff --git a/libffi/generate-osx-source-and-headers.py b/libffi/generate-osx-source-and-headers.py
new file mode 100644
index 00000000000..64313c1a364
--- /dev/null
+++ b/libffi/generate-osx-source-and-headers.py
@@ -0,0 +1,153 @@
+#!/usr/bin/env python
+import subprocess
+import re
+import os
+import errno
+import collections
+import sys
+
+class Platform(object):
+    pass
+
+sdk_re = re.compile(r'.*-sdk ([a-zA-Z0-9.]*)')
+
+def sdkinfo(sdkname):
+    ret = {}
+    for line in subprocess.Popen(['xcodebuild', '-sdk', sdkname, '-version'], stdout=subprocess.PIPE).stdout:
+        kv = line.strip().split(': ', 1)
+        if len(kv) == 2:
+            k,v = kv
+            ret[k] = v
+    return ret
+
+desktop_sdk_info = sdkinfo('macosx')
+
+def latest_sdks():
+    latest_desktop = None
+    for line in subprocess.Popen(['xcodebuild', '-showsdks'], stdout=subprocess.PIPE).stdout:
+        match = sdk_re.match(line)
+        if match:
+            if 'OS X' in line:
+                latest_desktop = match.group(1)
+
+    return latest_desktop
+
+desktop_sdk = latest_sdks()
+
+class desktop_platform_32(Platform):
+    sdk='macosx'
+    arch = 'i386'
+    name = 'mac32'
+    triple = 'i386-apple-darwin10'
+    sdkroot = desktop_sdk_info['Path']
+
+    prefix = "#if defined(__i386__) && !defined(__x86_64__)\n\n"
+    suffix = "\n\n#endif"
+
+class desktop_platform_64(Platform):
+    sdk='macosx'
+    arch = 'x86_64'
+    name = 'mac'
+    triple = 'x86_64-apple-darwin10'
+    sdkroot = desktop_sdk_info['Path']
+
+    prefix = "#if !defined(__i386__) && defined(__x86_64__)\n\n"
+    suffix = "\n\n#endif"
+
+def move_file(src_dir, dst_dir, filename, file_suffix=None, prefix='', suffix=''):
+    if not os.path.exists(dst_dir):
+        os.makedirs(dst_dir)
+
+    out_filename = filename
+
+    if file_suffix:
+        split_name = os.path.splitext(filename)
+        out_filename =  "%s_%s%s" % (split_name[0], file_suffix, split_name[1])
+
+    with open(os.path.join(src_dir, filename)) as in_file:
+        with open(os.path.join(dst_dir, out_filename), 'w') as out_file:
+            if prefix:
+                out_file.write(prefix)
+
+            out_file.write(in_file.read())
+
+            if suffix:
+                out_file.write(suffix)
+
+headers_seen = collections.defaultdict(set)
+
+def move_source_tree(src_dir, dest_dir, dest_include_dir, arch=None, prefix=None, suffix=None):
+    for root, dirs, files in os.walk(src_dir, followlinks=True):
+        relroot = os.path.relpath(root,src_dir)
+
+        def move_dir(arch, prefix='', suffix='', files=[]):
+            for file in files:
+                file_suffix = None
+                if file.endswith('.h'):
+                    if dest_include_dir:
+                        file_suffix = arch
+                        if arch:
+                            headers_seen[file].add(arch)
+                        move_file(root, dest_include_dir, file, arch, prefix=prefix, suffix=suffix)
+
+                elif dest_dir:
+                    outroot = os.path.join(dest_dir, relroot)
+                    move_file(root, outroot, file, prefix=prefix, suffix=suffix)
+
+        if relroot == '.':
+            move_dir(arch=arch,
+                     files=files,
+                     prefix=prefix,
+                     suffix=suffix)
+        elif relroot == 'x86':
+            move_dir(arch='i386',
+                     prefix="#if defined(__i386__) && !defined(__x86_64__)\n\n",
+                     suffix="\n\n#endif",
+                     files=files)
+            move_dir(arch='x86_64',
+                     prefix="#if !defined(__i386__) && defined(__x86_64__)\n\n",
+                     suffix="\n\n#endif",
+                     files=files)
+
+def build_target(platform):
+    def xcrun_cmd(cmd):
+        return subprocess.check_output(['xcrun', '-sdk', platform.sdkroot, '-find', cmd]).strip()
+
+    build_dir = 'build_' + platform.name
+    if not os.path.exists(build_dir):
+        os.makedirs(build_dir)
+        env = dict(CC=xcrun_cmd('clang'),
+                   LD=xcrun_cmd('ld'),
+                   CFLAGS='-arch %s -isysroot %s -mmacosx-version-min=10.6' % (platform.arch, platform.sdkroot))
+        working_dir=os.getcwd()
+        try:
+            os.chdir(build_dir)
+            subprocess.check_call(['../configure', '-host', platform.triple], env=env)
+            move_source_tree('.', None, '../osx/include',
+                             arch=platform.arch,
+                             prefix=platform.prefix,
+                             suffix=platform.suffix)
+            move_source_tree('./include', None, '../osx/include',
+                             arch=platform.arch,
+                             prefix=platform.prefix,
+                             suffix=platform.suffix)
+        finally:
+            os.chdir(working_dir)
+
+        for header_name, archs in headers_seen.iteritems():
+            basename, suffix = os.path.splitext(header_name)
+
+def main():
+    move_source_tree('src', 'osx/src', 'osx/include')
+    move_source_tree('include', None, 'osx/include')
+    build_target(desktop_platform_32)
+    build_target(desktop_platform_64)
+
+    for header_name, archs in headers_seen.iteritems():
+        basename, suffix = os.path.splitext(header_name)
+        with open(os.path.join('osx/include', header_name), 'w') as header:
+            for arch in archs:
+                header.write('#include <%s_%s%s>\n' % (basename, arch, suffix))
+
+if __name__ == '__main__':
+    main()