Trying to link with OpenSSL libraries in Windows

azarubkin

Hello!

I'm making a project which includes a statically linked library which in turn uses OpenSSL.
I have installed 32-bit OpenSSL from https://slproweb.com/products/Win32OpenSSL.html in default folder.
I have added to my static library pro file:

INCLUDEPATH += C:/OpenSSL-Win32/include
DEPENDPATH += C:/OpenSSL-Win32/include

I have added to my application pro file:

win32: LIBS += -L"C:/OpenSSL-Win32/lib/MinGW/" -leay32

I get:

C:\Qt\projects\build-config-Desktop_Qt_5_4_2_MinGW_32bit-Debug\common/../../config/common/QueryLogic.cpp:650: undefined reference to `AES_set_encrypt_key'
C:\Qt\projects\build-config-Desktop_Qt_5_4_2_MinGW_32bit-Debug\common/../../config/common/QueryLogic.cpp:651: undefined reference to `AES_encrypt'

If I change my application pro file to:

win32: LIBS += -L"C:/OpenSSL-Win32/lib/MinGW/" -llibeay32

I get:

C:/Qt/Tools/mingw491_32/bin/../lib/gcc/i686-w64-mingw32/4.9.1/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -llibeay32

But libeay32.a is there, in C:/OpenSSL-Win32/lib/MinGW/ folder. How do I link with OpenSSL in Windows?

Thanks!

Leonardo

Linkage is done from right to left. Maybe you're adding your static library after openssl. Put it before.

SGaist

Hi,

Do you also have libcrypto in your OpenSSL install ?

Leonardo

libcrypto is how it's called on unix systems. On Windows it's libeay32.

JKSH

@azarubkin said:

I have added to my application pro file:
win32: LIBS += -L"C:/OpenSSL-Win32/lib/MinGW/" -leay32

This works for me: LIBS += C:/OpenSSL-Win32/lib/libeay32.lib

azarubkin

@Leonardo said:

Linkage is done from right to left. Maybe you're adding your static library after openssl. Put it before.
Yes, you're right. Moving static library after openssl solved my issue.