Weird problem. I assume that if you do 'dir ms' while standing in D:\openssl-1.1.0, you will in fact see applink.c. Correct? My I suggest applying the attached patch to util/copy.pl and see if you get a better explanation for the mystery? Cheers, Richard In message <!&!LgAAAAAAAACnalsV0SyIQ5Y+/62bbDoOAQDDto4Q93URzrTNAKoAu7bmAAAAAAAOAABGAAAAAAAAAKdqWxXRLIhDlj7/rZtsOg4HAMO2jhD3dRHOtM0AqgC7tuYAAAAAAA4AAJlbM5Cm/1tMiLcaeCUj4e8AAAAAEAoAAAAAAAAQAAAAjUyuNB5OBUCSlRMp6Q6WWwEAAAAA at sina.com> on Wed, 21 Sep 2016 20:35:27 +0800, "Jing Liu" <jingmliu at sina.com> said: jingmliu> I?ve tried all my best to solve this problem but failed. Can you help jingmliu> me? jingmliu> jingmliu> - OS: Windows 10 jingmliu> jingmliu> - Perl: ActivePerl 5.12.2 build 1202 jingmliu> jingmliu> - Development environment: MS Visual Studio 2010 SP1 jingmliu> jingmliu> - OpenSSL version: OpenSSL 1.1.0 jingmliu> jingmliu> I tried to compile and install OpenSSL 1.1.0 according to the jingmliu> following steps: jingmliu> jingmliu> 1. decompressed OpenSSL 1.1.0 software package to directory jingmliu> "D:\openssl-1.1.0"; jingmliu> jingmliu> 2. opened the "Visual Studio 2010 command prompt" window using an jingmliu> Administrator identity; jingmliu> jingmliu> 3. switched to the directory "D:\openssl-1.1.0"; jingmliu> jingmliu> 4. D:\openssl-1.1.0> perl Configure VC-WIN32; jingmliu> jingmliu> 5. D:\openssl-1.1.0> nmake; jingmliu> jingmliu> 6. D:\openssl-1.1.0> nmake test; jingmliu> jingmliu> > So far, all steps went smoothly, but ... jingmliu> jingmliu> 7. D:\openssl-1.1.0> nmake install; jingmliu> jingmliu> Here, I got the following error and there was no file being copied to jingmliu> the destination directories even though those directories were jingmliu> successfully created. jingmliu> jingmliu> Microsoft (R) program maintenance utility 10.00.30319.01 copy right jingmliu> (C) Microsoft Corporation.All rights reserved. jingmliu> jingmliu> *** Installing development files jingmliu> jingmliu> created directory 'C:/Program Files (x86)/OpenSSL' jingmliu> jingmliu> created directory 'C:/Program Files (x86)/OpenSSL/include' jingmliu> jingmliu> created directory 'C:/Program Files (x86)/OpenSSL/include/openssl' jingmliu> jingmliu> Can't Open "./ms/applink.c" at .\util\copy.pl line 61. jingmliu> jingmliu> NMAKE : fatal error U1077: ?C:\Perl\bin\perl.exe?: return code ?0x16? jingmliu> jingmliu> Stop. jingmliu> -------------- next part -------------- A non-text attachment was scrubbed... Name: copy.pl.diff Type: text/x-patch Size: 488 bytes Desc: not available URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20160921/d451c966/attachment.bin>