CMake reports broken g++ and missing libiconv-2.dll - windows

Question

I have some strange problem with CMake when I press Configure button.
It reports me all the time that libiconv-2.dll is missing and fails to finish operation. However, this library is present in MinGW/bin folder.
I am using CodeBlocks-MinGW Makefiles and CMake version 3.6.1 - 32 bit version (although this same problem is with 64 bit version).
One interesting thing is that in consol it shows:
The CXX compiler identification is unknown
Check for working CXX compiler: C:/MinGW/bin/g++.exe
Check for working CXX compiler: C:/MinGW/bin/g++.exe -- broken
MinGW is correctly added to the system path and I was able to check version (GNU 4.8.1) and also compile simple hello world from command line using:
g++ test.cpp -o test
Testing this same CMakeLists file on another machine with this same configuration, but older CMake version 3.2.3 everything works. Doing some research online I've found that problem with this file is not new, so I doubt this is version problem.
Anyone has any idea what can be done more?
EDIT 1
This is the content of CMakeError.log
Compiling the CXX compiler identification source file
"CMakeCXXCompilerId.cpp" failed. Compiler: C:/MinGW/bin/g++.exe Build
flags: Id flags:
The output was: 1
Compiling the CXX compiler identification source file
"CMakeCXXCompilerId.cpp" failed. Compiler: C:/MinGW/bin/g++.exe Build
flags: Id flags: -c
The output was: 1
Checking whether the CXX compiler is IAR using "" did not match "IAR
.+ Compiler": g++.exe: fatal error: no input files compilation
terminated. Determining if the CXX compiler works failed with the
following output: Change Dir:
C:/Users/testuser/Desktop/build/CMakeFiles/CMakeTmp
Run Build Command:"C:/MinGW/bin/mingw32-make.exe" "cmTC_c9a03/fast"
C:/MinGW/bin/mingw32-make.exe -f CMakeFiles\cmTC_c9a03.dir\build.make
CMakeFiles/cmTC_c9a03.dir/build
mingw32-make.exe1: Entering directory
'C:/Users/testuser/Desktop/build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_c9a03.dir/testCXXCompiler.cxx.obj
C:\MinGW\bin\g++.exe -o
CMakeFiles\cmTC_c9a03.dir\testCXXCompiler.cxx.obj -c
C:\Users\testuser\Desktop\build\CMakeFiles\CMakeTmp\testCXXCompiler.cxx
CMakeFiles\cmTC_c9a03.dir\build.make:64: recipe for target
'CMakeFiles/cmTC_c9a03.dir/testCXXCompiler.cxx.obj' failed
mingw32-make.exe1: ***
[CMakeFiles/cmTC_c9a03.dir/testCXXCompiler.cxx.obj] Error 1
mingw32-make.exe1: Leaving directory
'C:/Users/testuser/Desktop/build/CMakeFiles/CMakeTmp'
Makefile:125: recipe for target 'cmTC_c9a03/fast' failed
mingw32-make.exe: *** [cmTC_c9a03/fast] Error 2
I have manually compiled the file testCXXCompiler.cpp with g++ and it worked. There was no error during compilation.
EDIT 2
I have created SSCCE to test if problem isn't with some dependencies or some other code-related things. But testing this file:
test.cpp
#include <iostream>
int main()
{
std::cout << "Test" << std::endl;
return 0;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
project(Test)
add_executable(Test test.cpp)
I have still problems with missing library. The console output changed however slightly and now it is:
The C compiler identification is unknown
The CXX compiler identification is unknown
Check for working C compiler: C:/MinGW/bin/gcc.exe
Check for working C compiler: C:/MinGW/bin/gcc.exe -- broken

Answer 1

I suppose I have found the answer. At least it is working for me.
Apparently I needed to run the CMake on the other machine as an Administrator. This way I assume it could accessed to GCC files correctly. However, I am not completely sure why on the other machine it wasn't required and worked just fine.

Answer 2

You might need to reinstall the lib
mingw-get install --reinstall mingw32-libiconv-dll
I had a very similar problem, and it was fixed this way.