How to build OpenSSL on Windows with Visual Studio 2017?

Question

I am trying to use OpenSSL but I am stuck on the step of compiling. The OpenSSL project has very unfriendly (bad) documentation.

Is there any actual help how to build th

Answer 1

Modified version of The Quantum Physicist python script

It can compile OpenSSL 1.0.x or OpenSSL 1.1.x

It can compile with multiple version of Visual Studio 2017/2019 included.

1) Create the file: CompileOpenSSL.py

import os
import os.path
from subprocess import call
import shutil
import sys
import re
import argparse

# args
parser = argparse.ArgumentParser()
parser.add_argument("-f", "--filename", help="First argument must be the tar.gz file of OpenSSL source", required=True)
parser.add_argument("-a", "--arch", help="Second argument must be x86 or amd64", required=True)
parser.add_argument("-v", "--vs_version", help="Visual Studio version (eg:90, 140, 150)", required=True)
parser.set_defaults(writeVersionInfos=False)
args = parser.parse_args()

compile_flags = "-no-asm"
#compile_flags = "-no-asm -no-shared"

openssl_32_flag = "VC-WIN32"
openssl_64_flag = "VC-WIN64A"

working_dir = os.getcwd()

dirname  = args.filename.replace(".tar.gz","")

src_32_suffix = "_" + "vs" + args.vs_version + "_32"
src_64_suffix = "_" + "vs" + args.vs_version + "_64"

vs_tools_env_var = "VS" + args.vs_version + "COMNTOOLS"


if args.arch != "x86" and args.arch != "amd64":
    print("Second argument must be x86 or amd64")
    exit(1)


if not bool(re.match("(openssl-){1}(\d)+(.)(\d)+(.)(\d)+(\w)+(.tar.gz)",args.filename)):
    print("The file given doesn't seem to be an openssl source file. It must be in the form: openssl-x.y.zw.tar.gz")
    exit(1)


call("7z x -y " + args.filename) #extract the .gz file

dirname_src_32 = dirname + src_32_suffix
dirname_src_64 = dirname + src_64_suffix
dirname_bin_32 = dirname + src_32_suffix + "_build"
dirname_bin_64 = dirname + src_64_suffix + "_build"

openssl_tar_file = args.filename[0:-3]

if args.arch == "x86":

#delete previous directories
    shutil.rmtree(os.getcwd()+'/'+dirname, ignore_errors=True)
    shutil.rmtree(os.getcwd()+'/'+dirname_src_32, ignore_errors=True)

#extract tar file for 32

    call("7z x -y " + openssl_tar_file)
    os.rename(dirname, dirname_src_32)

#Compile 32
    os.chdir(dirname_src_32)

    print("perl Configure " + openssl_32_flag + " --prefix=" + os.path.join(working_dir,dirname_bin_32) + " " + compile_flags)
    call("perl Configure " + openssl_32_flag + " --prefix=" + os.path.join(working_dir,dirname_bin_32) + " " + compile_flags,shell=True)

    if( os.path.exists("ms/do_ms.bat") ):
        call("ms\do_ms.bat",shell=True)
        print(os.getcwd())
        call("nmake -f ms/ntdll.mak",shell=True)
        call("nmake -f ms/ntdll.mak install",shell=True)
    else:
        call("nmake",shell=True)
        call("nmake test",shell=True)
        call("nmake install",shell=True)

    print("32-bit compilation complete.")

#Go back to base dir
os.chdir(working_dir)
################

if args.arch == "amd64":

#delete previous directories
    shutil.rmtree(os.getcwd()+'/'+dirname, ignore_errors=True)
    shutil.rmtree(os.getcwd()+'/'+dirname_src_64, ignore_errors=True)


#extract for 64
    call("7z x -y " + openssl_tar_file)
    os.rename(dirname, dirname_src_64)

#Compile 64
    os.chdir(dirname_src_64)

    call("perl Configure " + openssl_64_flag + " --prefix=" + os.path.join(working_dir,dirname_bin_64) + " " + compile_flags,shell=True)
    if( os.path.exists("ms\do_ms.bat") ):
        call("ms\do_win64a.bat",shell=True)
        call("nmake -f ms/ntdll.mak",shell=True)
        call("nmake -f ms/ntdll.mak install",shell=True)
    else:
        call("nmake",shell=True)
        call("nmake test",shell=True)
        call("nmake install",shell=True)

    print("64-bit compilation complete.")

#Go back to base dir
os.chdir(working_dir)
################

os.remove(openssl_tar_file)

2) Create the file: CompileOpenSSL_vs.cmd

ECHO  --------------------------------------
ECHO Require Python, 7Zip, PERL and NASM in PATH
ECHO  --------------------------------------

Rem ------------------------------------------------------
Rem TO CONFIGURE -----------------------------------------
Rem ------------------------------------------------------

Rem SET YOUR LOCAL PATHS-----------------------------------------
SET PATH=C:\Program Files (x86)\7-Zip;C:\Perl64\bin;M:\Backup\Coders\_tools\7-Zip\;%PATH% 

Rem SET YOUR OPENSSL ARCHIVE-----------------------------------------
REM SET FILENAME=openssl-1.0.2r.tar.gz 
SET FILENAME=openssl-1.1.1b.tar.gz

Rem SET THE VERSION OF YOUR VISUAL STUDIO-----------------------------------------
SET VSVERSION=%1


Rem ------------------------------------------------------
Rem COMPILATION LAUNCH -----------------------------------
Rem ------------------------------------------------------

Rem UTILS PATH-----
SET VSCOMNTOOLSNAME=VS%VSVERSION%COMNTOOLS

Rem Pick the good path for Visual Studio-----------------------------------------
IF %VSVERSION% GEQ 150 (
    Echo DO NOT FORGET TO ADD A SYSTEM VARIABLE %VSCOMNTOOLSNAME% - like: "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Tools\"
    SET VCVARPATH="%%%VSCOMNTOOLSNAME%%%..\..\VC\Auxiliary\Build\vcvarsall.bat"
) ELSE (
    SET VCVARPATH="%%%VSCOMNTOOLSNAME%%%..\..\VC\vcvarsall.bat"
)

Rem Set env -----------------------------------------
@pushd "%~dp0"
call %VCVARPATH% %2
@popd

Rem ------------------------------------------------------
Rem TEST APP EXIST -----------------------------------
Rem ------------------------------------------------------

where /q 7z.exe
IF ERRORLEVEL 1 (
    ECHO The application "7z.exe" is missing. Ensure to add/install it to the PATH in beginning of this script, check SET PATH
    PAUSE
    EXIT /B
)

where /q perl.exe
IF ERRORLEVEL 1 (
    ECHO The application "perl.exe" is missing. Ensure to add/install it to the PATH in beginning of this script, check SET PATH
    PAUSE
    EXIT /B
)

where /q nmake.exe
IF ERRORLEVEL 1 (
    ECHO The application "nmake.exe" is missing. Ensure to add/install it to the PATH in beginning of this script, check SET PATH
    PAUSE
    EXIT /B
)

where /q py.exe
IF ERRORLEVEL 1 (
    ECHO The application "py.exe" [shortcut of python] is missing. Ensure to add/install it to the PATH in beginning of this script, check SET PATH
    PAUSE
    EXIT /B
)

Rem Launch compilation -----------------------------------------

py CompileOpenSSL.py -f %FILENAME% -a %2 -v %VSVERSION%


PAUSE

3) Launch compilation from command line (Outside Visual Studio) eg:

CompileOpenSSL_vs.cmd 150 x86
CompileOpenSSL_vs.cmd 150 amd64

CompileOpenSSL_vs.cmd 90 x86