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Re: [Openvpn-users] Building OpenVPN in MinGW


  • Subject: Re: [Openvpn-users] Building OpenVPN in MinGW
  • From: Mathias Sundman <mathias@xxxxxxxxxx>
  • Date: Wed, 2 Mar 2005 19:43:41 +0100 (CET)

On Wed, 2 Mar 2005, James Yonan wrote:

So in OpenVPN's makefile.w32 I had to change

OPENSSL = /c/src/openssl-0.9.7e
LIB_DIRS = -L${OPENSSL}/out -L${LZO}
to
OPENSSL = /c/OpenSSL
LIB_DIRS = -L${OPENSSL}/lib/MinGW -L${LZO}

Even after these changes I got the following compile error:

c:\MinGW\bin\..\lib\gcc\mingw32\3.4.2\..\..\..\..\mingw32\bin\ld.exe:
cannot find -lssl32

To get around this problem, I renamed ssleay32.a to libssl32.a. Then it
found the library.

Q1: Why did I have to rename ssleay32.a? It doesn't seem like the "right"
way to solve the problem.


Then the linking failed because it couldn't find the lzo library.

I changed
LZO = /c/src/lzo-1.08
to
LZO = ../lzo-1.08

which was the correct path in my installation, but I found that the libs
were created in the src/.libs dir, so I changed

LIB_DIRS = -L${OPENSSL}/lib/MinGW -L${LZO}
to
LIB_DIRS = -L${OPENSSL}/lib/MinGW -L${LZO}/src/.libs

and openvpn.exe could finaly be built.

Q2: Did I do anything wrong while building LZO, or why did I have to
change the path to the lzo library in LIB_DIRS?

James, what do you think about changing makefile.w32 to match a default
installtion of the binary OpenSSL distribution instead of the source
distribuition? I think very few windows users have any use for the OpenSSL
source, so they could avoid going through the trouble with building
OpenSSL just to build OpenVPN.

Are you using this page to get the binary distro? :

http://www.openssl.org/related/binaries.html

Yes.

The problem I have with this is that it's a third party providing the
build, not the OpenSSL project itself.  I would rather build OpenVPN from
official OpenSSL sources.  I agree that it makes the build process more
complex, but then this should not be an issue except for developers.

Okay, how about just adding a few lines about that the above changes to makefile.w32 are necessary to build OpenVPN using the binary distribution of OpenSSL to Install-Win32?


Do you have any clues about the other questions?

/Mathias