Re: [Dev-C++] About POSIX Threads and the compiler

[Mac R. <re...@no...>]

At 01:33 AM 6/28/02 -0700, nmp...@ya... wrote:
>Hello people.I have downloaded the library of threads
>for Win32.I read who to install eith a gcc compiler
>and what to do with pthread.dll but nothing don e so
>far many problems in compilation and eventhough i put
>pthread.h semaphore.h in include the linker cannot se
>these libraries.Please help because i am a student in
>the second year of my studies and i writing an
>excersise.
>Nikos1

.DLL files contain the actual executable portions of the library, but are
not linked directly.

.h files contain declarations of functions and data types, but do not
contain the actual code.

So your current situation is that you know the declaration of the
functions, and you have the file with the functions, but your code doesn't
know how to get access to the file with the functions (the DLL).  There are
two ways to fix this:

1. Get the corresponding .LIB file.  .LIB files can be linked into your
program, and they contain just enough code (in "stub" routines) to find the
DLL and attach to it.  This is usually the simplest, and can usually be
done by finding the right .LIB and then adding it to your project -- this
is for other development environments (Visual C, Digital Mars, others), so
I am not certain that this is how it is done in Dev-C++.  Hopefully someone
will confirm and fill in details.

2. You can link the functions out of the DLL directly with LoadLibrary and
GetProcAddress.  This method is *much* more painful to look at, but is also
more flexible and will work with any compiler than runs Win32.

Another thought : if you are trying to do UNIX-like things on Win32, you
might want to look into getting Cygwin installed rather than MinGW.  Cygwin
is intended to compile UNIX-based source code into Win32 executables.
MinGW is intended to compile Win32-based source code into Win32 executables.

Yet another thought : you might look into BOOST (http://www.boost.org).  It
has a lot of utility classes, including a portable threading class library.

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