From: =?ISO-8859-1?Q?Fran=E7ois_Rappaz?= <rappazf@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Compiling a dll for 64-bits W7 with cygwin and mingw-w64
Date: Thu, 22 Sep 2011 07:04:14 -0700 (PDT)
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On Sep 17, 1:51=A0am, Roedy Green <see_webs...@mindprod.com.invalid>
wrote:
> On Fri, 16 Sep 2011 07:32:26 -0700 (PDT), Fran=E7ois Rappaz
> <rapp...@gmail.com> wrote, quoted or indirectly quoted someone who
> said :
>
> > =A0{System.loadLibrary("kbhook");}
>
> paths are delicate things. The tiniest typo breaks them.
>
> seehttp://mindprod.com/applet/wassup.html
>
> download and run it to dump your system properties. For Linux you
> should see : instead of ; between the elements.
>
> look particularly at:
>
> java.library.path =3D
> E:\sys;.;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:=
\Windows\System32\Wbem;F:\Program
> Files (X86)\jet7.2-pro\bin;E:\Program
> Files\Java\jdk1.7.0\bin;E:\env;E:\sys;F:\Program
> Files\JPSoft\TCMD12x64;F:\Program Files\vslick\win;F:\Program Files
> (x86)\apache-ant-1.8.2\bin;F:\Program
> Files\PostgreSQL\9.0\bin;E:\com\mindprod\reorg;F:\Program
> Files\TortoiseSVN\bin;F:\Program Files (x86)\asm;F:\Program Files
> (x86)\Microsoft Visual Studio 10.0\Common7\IDE\;F:\Program Files
> (x86)\Microsoft Visual Studio 10.0\VC\BIN;F:\Program Files
> (x86)\Microsoft Visual Studio
> 10.0\Common7\Tools;C:\Windows\Microsoft.NET\Framework\v4.0.30319;C:\Progr=
am
> Files (x86)\Microsoft SDKs\Windows\v7.0A\bin;c:\Program Files
> (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft
> SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL
> Server\100\DTS\Binn\
> --
> Roedy Green Canadian Mind Productshttp://mindprod.com
> Your top priority should be fixing bugs. If you carry on development,
> you are just creating more places you will have to search for them.

At last, with the help of people on mingw-w64-
public@lists.sourceforge.net, here is the magical  lines to have a dll
working with java 64 bits. Under cygwin

jdk=3D'/cygdrive/c/Program Files/Java/Jdk1.7.0'
x86_64-w64-mingw32-g++ -w  -mno-cygwin -I"$jdk/include" -I"$jdk/
include/win32" -static -shared -o foo.dll foo.cpp

I could then stripp the size of the dll with
x86_64-w64-mingw32-strip foo.dll

which gives a 88 kb file instead of 509 kb.
F.