Eclipse无法使用gcc编译* .C

Question

I am using Eclipse Kepler and running it under Win7 64-Bit. As compiler I use the gcc (4.8.1) from MinGW. Now I have the following problem:

//edit: Reformulated question to make it more clear

I have a project containing of one source-file with C-Code: main.c

This file can be compiled over 2 ways:

1. Start the compiler over the command-line: gcc -o main.exe main.c
2. Start the compiler over Eclipse by starting the normal build-routine (which also calls the gcc )

Now for some reason I want to add some C++-Code, but I still want to compile it with the gcc .

The gcc itself decides how to compile over the file extension - This means, if main.c contains C++-Code and I call gcc -o main.exe main.c it won't work. To make the compiler realize it's C++ I have to change the file-extension to somthing like .C or .cpp and then it will work.

Now back to Eclipse:

When I change my Sourcefile to main.C Eclipse interprets it as C++ File, meaning it changes the Code-Highlighting. When I now start a build process over Eclipse it just tells me

Info: Nothing to build for PROJECT

This means there is not even a call to the gcc -compiler. My guess is, that Eclipse somehow doesn't want to call the gcc, because the source-file is marked as C++-File.

//edit2: Just tried - when I have a C++-Projekt Eclipse just ignores the *.C or the *.cpp -files. I guess I have to add them manually, so they're built too ... but where?

Answer 1

The g++ is the compiler to compile C++ codes.
Change you compiler in you eclipse project.