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# Script for building the _ssl and _hashlib modules for Windows.
# Uses Perl to setup the OpenSSL environment correctly
# and build OpenSSL, then invokes a simple nmake session
# for the actual _ssl.pyd and _hashlib.pyd DLLs.
# THEORETICALLY, you can:
# * Unpack the latest SSL release one level above your main Python source
# directory. It is likely you will already find the zlib library and
# any other external packages there.
# * Install ActivePerl and ensure it is somewhere on your path.
# * Run this script from the PCBuild directory.
#
# it should configure and build SSL, then build the _ssl and _hashlib
# Python extensions without intervention.
# Modified by Christian Heimes
# Now this script supports pre-generated makefiles and assembly files.
# Developers don't need an installation of Perl anymore to build Python. A svn
# checkout from our svn repository is enough.
#
# In Order to create the files in the case of an update you still need Perl.
# Run build_ssl in this order:
# python.exe build_ssl.py Release x64
# python.exe build_ssl.py Release Win32
from __future__ import with_statement, print_function
import os
import re
import sys
import time
import subprocess
from shutil import copy
from distutils import log
from distutils.spawn import find_executable
from distutils.file_util import copy_file
from distutils.sysconfig import parse_makefile, expand_makefile_vars
# The mk1mf.pl output filename template
# !!! This must match what is used in prepare_ssl.py
MK1MF_FMT = 'ms\\nt{}.mak'
# The header files output directory name template
# !!! This must match what is used in prepare_ssl.py
INCLUDE_FMT = 'include{}'
# Fetch all the directory definitions from VC properties
def get_project_properties(propfile):
macro_pattern = r'<UserMacro\s+Name="([^"]+?)"\s+Value="([^"]*?)"\s*/>'
with open(propfile) as fin:
items = re.findall(macro_pattern, fin.read(), re.MULTILINE)
props = dict(items)
for name, value in items:
try:
props[name] = expand_makefile_vars(value, props)
except TypeError:
# value contains undefined variable reference, drop it
del props[name]
return props
_variable_rx = re.compile(r"([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)")
def fix_makefile(makefile, platform_makefile, suffix):
"""Fix some stuff in all makefiles
"""
subs = {
'PERL': 'rem', # just in case
'CP': 'copy',
'MKDIR': 'mkdir',
'OUT_D': 'out' + suffix,
'TMP_D': 'tmp' + suffix,
'INC_D': INCLUDE_FMT.format(suffix),
'INCO_D': '$(INC_D)\\openssl',
}
with open(platform_makefile) as fin, open(makefile, 'w') as fout:
for line in fin:
m = _variable_rx.match(line)
if m:
name = m.group(1)
if name in subs:
line = '%s=%s\n' % (name, subs[name])
fout.write(line)
_copy_rx = re.compile(r'\t\$\(PERL\) '
r'\$\(SRC_D\)\\util\\copy-if-different.pl '
r'"([^"]+)"\s+"([^"]+)"')
def copy_files(makefile, makevars):
# Create the destination directories (see 'init' rule in nt.dll)
for varname in ('TMP_D', 'LIB_D', 'INC_D', 'INCO_D'):
dirname = makevars[varname]
if not os.path.isdir(dirname):
os.mkdir(dirname)
# Process the just local library headers (HEADER) as installed headers
# (EXHEADER) are handled by prepare_ssl.py (see 'headers' rule in nt.dll)
headers = set(makevars['HEADER'].split())
with open(makefile) as fin:
for line in fin:
m = _copy_rx.match(line)
if m:
src, dst = m.groups()
src = expand_makefile_vars(src, makevars)
dst = expand_makefile_vars(dst, makevars)
if dst in headers:
copy_file(src, dst, preserve_times=False, update=True)
# Update buildinf.h for the build platform.
def fix_buildinf(makevars):
platform_cpp_symbol = 'MK1MF_PLATFORM_'
platform_cpp_symbol += makevars['PLATFORM'].replace('-', '_')
fn = expand_makefile_vars('$(INCL_D)\\buildinf.h', makevars)
with open(fn, 'w') as f:
# sanity check
f.write(('#ifndef {}\n'
' #error "Windows build (PLATFORM={PLATFORM}) only"\n'
'#endif\n').format(platform_cpp_symbol, **makevars))
buildinf = (
'#define CFLAGS "compiler: cl {CFLAG}"\n'
'#define PLATFORM "{PLATFORM}"\n'
'#define DATE "{}"\n'
).format(time.asctime(time.gmtime()),
**makevars)
f.write(buildinf)
print('Updating buildinf:')
print(buildinf)
sys.stdout.flush()
def main():
if sys.argv[1] == "Debug":
print("OpenSSL debug builds aren't supported.")
elif sys.argv[1] != "Release":
raise ValueError('Unrecognized configuration: %s' % sys.argv[1])
if sys.argv[2] == "Win32":
platform = "VC-WIN32"
suffix = '32'
elif sys.argv[2] == "x64":
platform = "VC-WIN64A"
suffix = '64'
else:
raise ValueError('Unrecognized platform: %s' % sys.argv[2])
# Have the distutils functions display information output
log.set_verbosity(1)
# Use the same properties that are used in the VS projects
solution_dir = os.path.dirname(__file__)
propfile = os.path.join(solution_dir, 'pyproject.vsprops')
props = get_project_properties(propfile)
# Ensure we have the necessary external depenedencies
ssl_dir = os.path.join(solution_dir, props['opensslDir'])
if not os.path.isdir(ssl_dir):
print("Could not find the OpenSSL sources, try running "
"'build.bat -e'")
sys.exit(1)
# Ensure the executables used herein are available.
if not find_executable('nmake.exe'):
print('Could not find nmake.exe, try running env.bat')
sys.exit(1)
# add our copy of NASM to PATH. It will be on the same level as openssl
externals_dir = os.path.join(solution_dir, props['externalsDir'])
for dir in os.listdir(externals_dir):
if dir.startswith('nasm'):
nasm_dir = os.path.join(externals_dir, dir)
nasm_dir = os.path.abspath(nasm_dir)
old_path = os.environ['PATH']
os.environ['PATH'] = os.pathsep.join([nasm_dir, old_path])
break
else:
if not find_executable('nasm.exe'):
print('Could not find nasm.exe, please add to PATH')
sys.exit(1)
# If the ssl makefiles do not exist, we invoke PCbuild/prepare_ssl.py
# to generate them.
platform_makefile = MK1MF_FMT.format(suffix)
if not os.path.isfile(os.path.join(ssl_dir, platform_makefile)):
pcbuild_dir = os.path.join(os.path.dirname(externals_dir), 'PCbuild')
prepare_ssl = os.path.join(pcbuild_dir, 'prepare_ssl.py')
rc = subprocess.call([sys.executable, prepare_ssl, ssl_dir])
if rc:
print('Executing', prepare_ssl, 'failed (error %d)' % rc)
sys.exit(rc)
old_cd = os.getcwd()
try:
os.chdir(ssl_dir)
# Get the variables defined in the current makefile, if it exists.
makefile = MK1MF_FMT.format('')
try:
makevars = parse_makefile(makefile)
except EnvironmentError:
makevars = {'PLATFORM': None}
# Rebuild the makefile when building for different a platform than
# the last run.
if makevars['PLATFORM'] != platform:
print("Updating the makefile...")
sys.stdout.flush()
# Firstly, apply the changes for the platform makefile into
# a temporary file to prevent any errors from this script
# causing false positives on subsequent runs.
new_makefile = makefile + '.new'
fix_makefile(new_makefile, platform_makefile, suffix)
makevars = parse_makefile(new_makefile)
# Secondly, perform the make recipes that use Perl
copy_files(new_makefile, makevars)
# Set our build information in buildinf.h.
# XXX: This isn't needed for a properly "prepared" SSL, but
# it fixes the current checked-in external (as of 2017-05).
fix_buildinf(makevars)
# Finally, move the temporary file to its real destination.
if os.path.exists(makefile):
os.remove(makefile)
os.rename(new_makefile, makefile)
# Now run make.
makeCommand = "nmake /nologo /f \"%s\" lib" % makefile
print("Executing ssl makefiles:", makeCommand)
sys.stdout.flush()
rc = os.system(makeCommand)
if rc:
print("Executing", makefile, "failed (error %d)" % rc)
sys.exit(rc)
finally:
os.chdir(old_cd)
sys.exit(rc)
if __name__=='__main__':
main()
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