sorry, im a beginner.

where can i find a c-compiler in the current software respectively where can i download it and how do i install it?

thanks in advance
harry

You should start by reading up on compiling Linux.
I assume you're running Windows, otherwise you'd know where to find your compiler. So I suggest you setup a virtual machine with Linux for your compiling environment (much simpler and I doubt anyone here is compiling under Windows itself).
Linux comes with everything you need for Software development, which includes C/C++ compilers. Once you've got your Linux system setup you can follow the compiling tutorial in the Wiki.

Thanks NaYthan for your answer, i begin to understand.
i have a running linux system on a PC, not virtual, but i thought i have also a linux system on the carambola board and i can compile my software there.
i have to compile it on my Linux-PC and transfer it to my carambola board, right?
But there is a complete different hardware below, is the software running on my carambola after i had compiled it on my PC?
regards
Harry

Well yes, Carambola is running Linux, but with a meger 8MB harddrive and a mere 320MHz for processing you don't really wanna try to setup a development environment there (even though you could, if you added a big enough USB flash disk; but who want's to wait a day for the kernel to finish compiling?)
So what you do is called cross compiling. Compile your Software for the Carambola on a PC (so you're crossing hardware architectures with the compiler, hence cross compiling).

@NaYthan
thanks, now i know what to do
regards
Harry

me again

I installed cross-compiler on my linux system and found everything compiler, libraries...
I can read everywhere that i can build up a new image for my carambola,
but i only want to build up a single program like helloworld.

Is there somewhere a description how to build a single (small) program that runs on openwrt?
(like gcc ... hello.c -o hello)

thanks in advance
Harry

Hello Harry,

simply run:
./carambola/staging_dir/toolchain-mipsel_r2_gcc-4.7-linaro_uClibc-0.9.33.2/bin/mipsel-openwrt-linux-gcc hello.c -o hello

or take a look at the various howtos and examples in the openwrt forum.
F.ex: http://wiki.openwrt.org/doc/devel/crosscompile

Michael

How easy life can be!

thanks a lot Michael, it works.
That was exact the information i needed in the big amount of descriptions everywhere.

Regards
Harry