Question

I have an updated cygwin-full install ,mingw ,codeblocks on a windows system.
i have a c++ program which performs xml generation based on input.

I understand to build an executable file for unix we use makefiles. makefiles being typical project files .
Hence i used the plugin cbp2make.exe to get the makefile for the cbp project file. and i tried to execute make in cygwin. hoping to get a linux executable file. but this was clearly wrong.

a typical test c++ test program test.c would be compiled in cygwin using gcc cross compile options like.

g++-linux -o test test.c

this would give us the linux executable file test or if no name is specified it would give an a.out

This is all well and good for a simple c++ program with no included header files.

I understand when we are dealing with c++ files with lot of external library files a simple g++ -o ourprojfile.exe ourprojectfile.cpp does not work hence we would need to use make files. Question 1 : Am i wrong in assuming this ?*

Question 2: how can we setup cross compile to get a linux executable file directly from codeblocks.

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Update : the problem at my end seems to be missing dependent cpp files which i assumed i included in the main file.
The solution was to include them in the main file or simply write handle like so

g++-linux myprog_linux main.cpp first.cpp second.cpp third.cpp 

The problem now is after i get the Linux executable file.
when i try to run it on linux machine i get the error of a

 /usr/local/folder/myfile/my_prog_nix: error while loading shared libraries: 
libstdc++.so.5: cannot open shared object file: No such file or directory

what sort of linking do i need to do clear this?

Answer 1

You are wrong assuming that you need makefile. Any builder will do. The important point is, that you have to tell the builder to:

• Call g++linux instead of g++ (or mingw-g++ or whatever it’s calling)
• Set proper path to look for includes and libraries. The compiler will know where to look up system libraries that came with it on it’s own, so you just have to deal with any extra stuff you have.

Normally makefiles call the compiler given in CC for C sources and CXX for C++ sources and passes them content of CFLAGS and CXXFLAGS as additional arguments respectively. But you can probably just tell CodeBlocks (but I never used it, so I don’t know) to call different compiler and avoid all the make business.