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# Script for preparing OpenSSL for building on Windows.
# Uses Perl to create nmake makefiles and otherwise prepare the way
# for building on 32 or 64 bit platforms.
# Script originally authored by Mark Hammond.
# Major revisions by:
# Martin v. Löwis
# Christian Heimes
# Zachary Ware
# THEORETICALLY, you can:
# * Unpack the latest OpenSSL release where $(opensslDir) in
# PCbuild\pyproject.props expects it to be.
# * Install ActivePerl and ensure it is somewhere on your path.
# * Run this script with the OpenSSL source dir as the only argument.
#
# it should configure OpenSSL such that it is ready to be built by
# ssl.vcxproj on 32 or 64 bit platforms.
import os
import re
import sys
import shutil
import subprocess
# Find all "foo.exe" files on the PATH.
def find_all_on_path(filename, extras = None):
entries = os.environ["PATH"].split(os.pathsep)
ret = []
for p in entries:
fname = os.path.abspath(os.path.join(p, filename))
if os.path.isfile(fname) and fname not in ret:
ret.append(fname)
if extras:
for p in extras:
fname = os.path.abspath(os.path.join(p, filename))
if os.path.isfile(fname) and fname not in ret:
ret.append(fname)
return ret
# Find a suitable Perl installation for OpenSSL.
# cygwin perl does *not* work. ActivePerl does.
# Being a Perl dummy, the simplest way I can check is if the "Win32" package
# is available.
def find_working_perl(perls):
for perl in perls:
try:
subprocess.check_output([perl, "-e", "use Win32;"])
except subprocess.CalledProcessError:
continue
else:
return perl
if perls:
print("The following perl interpreters were found:")
for p in perls:
print(" ", p)
print(" None of these versions appear suitable for building OpenSSL")
else:
print("NO perl interpreters were found on this machine at all!")
print(" Please install ActivePerl and ensure it appears on your path")
def create_makefile64(makefile, m32):
"""Create and fix makefile for 64bit
Replace 32 with 64bit directories
"""
if not os.path.isfile(m32):
return
with open(m32) as fin:
with open(makefile, 'w') as fout:
for line in fin:
line = line.replace("=tmp32", "=tmp64")
line = line.replace("=out32", "=out64")
line = line.replace("=inc32", "=inc64")
# force 64 bit machine
line = line.replace("MKLIB=lib", "MKLIB=lib /MACHINE:X64")
line = line.replace("LFLAGS=", "LFLAGS=/MACHINE:X64 ")
# don't link against the lib on 64bit systems
line = line.replace("bufferoverflowu.lib", "")
fout.write(line)
os.unlink(m32)
def create_asms(makefile):
#create a custom makefile out of the provided one
asm_makefile = os.path.splitext(makefile)[0] + '.asm.mak'
with open(makefile) as fin:
with open(asm_makefile, 'w') as fout:
for line in fin:
# Keep everything up to the install target (it's convenient)
if line.startswith('install: all'):
break
else:
fout.write(line)
asms = []
for line in fin:
if '.asm' in line and line.strip().endswith('.pl'):
asms.append(line.split(':')[0])
while line.strip():
fout.write(line)
line = next(fin)
fout.write('\n')
fout.write('asms: $(TMP_D) ')
fout.write(' '.join(asms))
fout.write('\n')
os.system('nmake /f {} PERL=perl asms'.format(asm_makefile))
os.unlink(asm_makefile)
def fix_makefile(makefile):
"""Fix some stuff in all makefiles
"""
if not os.path.isfile(makefile):
return
copy_if_different = r'$(PERL) $(SRC_D)\util\copy-if-different.pl'
with open(makefile) as fin:
lines = fin.readlines()
with open(makefile, 'w') as fout:
for line in lines:
if line.startswith("PERL="):
continue
if line.startswith("CP="):
line = "CP=copy\n"
if line.startswith("MKDIR="):
line = "MKDIR=mkdir\n"
if line.startswith("CFLAG="):
line = line.strip()
for algo in ("RC5", "MDC2", "IDEA"):
noalgo = " -DOPENSSL_NO_%s" % algo
if noalgo not in line:
line = line + noalgo
line = line + '\n'
if copy_if_different in line:
line = line.replace(copy_if_different, 'copy /Y')
fout.write(line)
def run_configure(configure, do_script):
print("perl Configure "+configure+" no-idea no-mdc2")
os.system("perl Configure "+configure+" no-idea no-mdc2")
print(do_script)
os.system(do_script)
def cmp(f1, f2):
bufsize = 1024 * 8
with open(f1, 'rb') as fp1, open(f2, 'rb') as fp2:
while True:
b1 = fp1.read(bufsize)
b2 = fp2.read(bufsize)
if b1 != b2:
return False
if not b1:
return True
def copy(src, dst):
if os.path.isfile(dst) and cmp(src, dst):
return
shutil.copy(src, dst)
def prep(arch):
if arch == "x86":
configure = "VC-WIN32"
do_script = "ms\\do_nasm"
makefile="ms\\nt.mak"
m32 = makefile
dirsuffix = "32"
elif arch == "amd64":
configure = "VC-WIN64A"
do_script = "ms\\do_win64a"
makefile = "ms\\nt64.mak"
m32 = makefile.replace('64', '')
dirsuffix = "64"
#os.environ["VSEXTCOMP_USECL"] = "MS_OPTERON"
else:
raise ValueError('Unrecognized platform: %s' % arch)
# rebuild makefile when we do the role over from 32 to 64 build
if arch == "amd64" and os.path.isfile(m32) and not os.path.isfile(makefile):
os.unlink(m32)
# If the ssl makefiles do not exist, we invoke Perl to generate them.
# Due to a bug in this script, the makefile sometimes ended up empty
# Force a regeneration if it is.
if not os.path.isfile(makefile) or os.path.getsize(makefile)==0:
print("Creating the makefiles...")
sys.stdout.flush()
run_configure(configure, do_script)
if arch == "amd64":
create_makefile64(makefile, m32)
fix_makefile(makefile)
copy(r"crypto\buildinf.h", r"crypto\buildinf_%s.h" % arch)
copy(r"crypto\opensslconf.h", r"crypto\opensslconf_%s.h" % arch)
else:
print(makefile, 'already exists!')
print('creating asms...')
create_asms(makefile)
def main():
if len(sys.argv) == 1:
print("Not enough arguments: directory containing OpenSSL",
"sources must be supplied")
sys.exit(1)
if len(sys.argv) > 2:
print("Too many arguments supplied, all we need is the directory",
"containing OpenSSL sources")
sys.exit(1)
ssl_dir = sys.argv[1]
if not os.path.isdir(ssl_dir):
print(ssl_dir, "is not an existing directory!")
sys.exit(1)
# perl should be on the path, but we also look in "\perl" and "c:\\perl"
# as "well known" locations
perls = find_all_on_path("perl.exe", [r"\perl\bin",
r"C:\perl\bin",
r"\perl64\bin",
r"C:\perl64\bin",
])
perl = find_working_perl(perls)
if perl:
print("Found a working perl at '%s'" % (perl,))
else:
sys.exit(1)
sys.stdout.flush()
# Put our working Perl at the front of our path
os.environ["PATH"] = os.path.dirname(perl) + \
os.pathsep + \
os.environ["PATH"]
old_cwd = os.getcwd()
try:
os.chdir(ssl_dir)
for arch in ['amd64', 'x86']:
prep(arch)
finally:
os.chdir(old_cwd)
if __name__=='__main__':
main()
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