Mingw - application unable to start

[stav]

Hi
im using mingw and im trying to link with glew

the problem is that after compilation when i try to run the binary
it gives me the following error:

The application was unable to start correctly (0xc000007b).

This is my makefile:

CXX = g++
CXXFLAGS = -Wall -std=c++11 -I./include -m64
LIBS = -I./libs/glew-2.1.0/include/ -L./libs/glew-2.1.0/lib/Release/x64 -lglew32

default:
	$(CXX) $(CXXFLAGS) ./src/*.cpp $(LIBS) -o ./bin/a.exe

run: 
	@./bin/a.out

 */

the src dir just contains a main.cpp that just prints "hello world"
so that shouldnt be the problem.

From searching around on google it looks like im missing a dependency but i already copied glew32.dll to the same directory as my outputted binary file so im not sure what else i could be missing?

can somebody please help me?

[Ganado]

I see you are manually trying to have it build in 64-bit with the -m64 option. I have never used this... but a common problem that could cause your error is that a 64-bit DLL is trying to be loaded into a 32-bit process.

Three things, if you would:
- Determine if the .exe output is 32-bit or 64-bit. You can do that by following the directions here: https://superuser.com/a/889267 Let us know what the result is.
- Can you add verbose to your build script by adding -v to your CXXFLAGS, and then post the output?
- Since it compiles fine, can you open your .exe file with the Dependency Walker?
http://www.dependencywalker.com/

One more note, I just realized:
A lot of "pre-built" binaries from websites like to pretend that Windows == Visual Studio, and that other ways to compile programs don't exist.

I'm not sure if your glew32.lib is compatible with MinGW. Maybe this link helps https://stackoverflow.com/questions/7241047/linking-lib-files-with-mingw

You might have to build glew32 yourself!


Edit: Gonna try compiling myself with g++ to see what happens.
Edit 2: Okay I stopped trying. Since you figured it out, bump the topic if you have more questions.
In general, I always just build everything myself, usually with MSYS2. Getting libraries like FFTW3 to build without MSYS2 is a PITA.

[stav]

ah i figured it out, i was just being stupid.
After downloading dependency walker and inspecting my .exe i noticed that the glew32 dll wasn't 64 bit

i guess i must have accidentally copied from the wrong glew directory (pretty annoying that they are both called glew32)

its all working now

thanks for the help