JNI with Cygwin...library locations

[Matthew Zimmer]

Hey all,
I've been forced to dip my hand into writing some JNI code (*sigh*) and
downloaded cygwin so I'd have a c++ compiler to use to write the dll
files. However, I don't know where the appropriate libraries to add in
my cc statement. According to the tutorial on java.sun, if I had
visualC++ I'd use the following for a HelloWorld example:
cl -Ic:\java\include -Ic:\java\include\win32
-LD HelloWorldImp.c -Fehello.dll

Could somebody please interpret this line for me as to what I need using
cygwin's c++ compiler. I have cygwin installed at c:\cygwin. Thanks
for any help.

Matthew

 

[Thomas Fritsch]

Hey all,
I've been forced to dip my hand into writing some JNI code (*sigh*)
and downloaded cygwin so I'd have a c++ compiler to use to write the
dll files. However, I don't know where the appropriate libraries to
add in my cc statement. According to the tutorial on java.sun, if I
had visualC++ I'd use the following for a HelloWorld example:
cl -Ic:\java\include -Ic:\java\include\win32
-LD HelloWorldImp.c -Fehello.dll

Could somebody please interpret this line for me as to what I need
using cygwin's c++ compiler. I have cygwin installed at c:\cygwin.
Thanks for any help.

Matthew

Read the compiler reference of CL.EXE by yourself:
http://msdn.microsoft.com/library/d...us/vccore98/HTML/_core_Compiler_Reference.asp

Thomas

 

[Matthew Zimmer]

Read the compiler reference of CL.EXE by yourself:
http://msdn.microsoft.com/library/d...us/vccore98/HTML/_core_Compiler_Reference.asp


Thomas

Well, that wasn't what I was asking. I know the compiler options I
need. What I was asking was where the libraries I needed to include
were when using cygwin on windows. CL is a visualC++ compiler, not a
gcc compiler like you get with cygwin. However, I did find the correct
command from another web page and for anybody who is interested it is
this (assuming you're writing to hello.dll and reading from Hello.cpp):

gcc -mno-cygwin -I/usr/include -I/usr/include/win32
-Wl,--add-stdcall-alias -shared -o hello.dll Hello.cpp

Matthew

 

[Thomas Fritsch]

Well, that wasn't what I was asking. ...

Matthew

Hi Matthew

OK, I misunderstood your phrase "Could somebody please interpret this
line for me ..." so as if you wanted the CL-call being explained.
Please excuse the impolite answer I gave!

Regards
Thomas

 

[Matthew Zimmer]

Hi Matthew

OK, I misunderstood your phrase "Could somebody please interpret this
line for me ..." so as if you wanted the CL-call being explained.
Please excuse the impolite answer I gave!

Regards
Thomas

No problem...thanks for trying to help with it anyway. Re-reading my
question I can see where it was easy to misinterpret.

Matthew