MSYS2 (64 bit): The C compiler identification is unknown - makefile

I'm new to building in Windows. I'm building the following project: https://github.com/arkottke/strata.
The page suggests installing dependencies using MSYS2. I've installed MSYS2 and installed everything as instructed exactly, but I get the following when trying to build using cmake:
$ cmake .. -DCMAKE_BUILD_TYPE=Release
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:31 (project):
No CMAKE_C_COMPILER could be found.
Tell CMake where to find the compiler by setting either the environment
variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
the compiler, or to the compiler name if it is in the PATH.
CMake Error at CMakeLists.txt:31 (project):
No CMAKE_CXX_COMPILER could be found.
Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "/home/isb17182/strata/build/CMakeFiles/CMakeOutput.log".
See also "/home/isb17182/strata/build/CMakeFiles/CMakeError.log".
I've seen answers for the same problem on other building platforms, but these are too complicated for me to understand currently. If someone could provide a simple explanation of how to resolve this it would be much appreciated.
Thanks

This is what worked for me
Thanks to everyone who contributed.
Run
pacman -S base-devel gcc
Which will update GCC to latest and verify by
gcc --version
Be sure you're using the cmake of msys2 (as the project build instructions suggest you should install), not a regular Windows cmake installed elsewhere on the system.
which cmake
After this ere execute your command...build done ;)

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I've uploaded a print screen from my CMAKE Error message
The C compiler identification is unknown
The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:10 (PROJECT):
No CMAKE_C_COMPILER could be found.
CMake Error at CMakeLists.txt:10 (PROJECT):
No CMAKE_CXX_COMPILER could be found.
Problem solved by changing the visual studio version in the configuration.
Hence, a new problem occurred with MSBuild.exe to get the value of VCTargetsPath:. I will ask in that in another question.

Can't compile restbed on Windows 7

I'm a the end with 16 hours of configure, installing, deleting, modifying and hit my keyboard many times....
I want to use restbed for plattform independent C++ programming, but I can't get build this stuff. I have Cygwin (download at 2017/04/24) installed (think for git or whatever creepy things), Code::Blocks with MinGW (16.01) and at least a seperate MinGW (also downloaded 2017/04/24) installation. Also I've Visual Studio 2012 Pro, 2015 and 2017 (long story) on a Windows 7 x64 Pro.
This is what I try and the results:
cloning recursivly with git in empty directory and following the instructions.
cmake -DBUILD_TESTS=YES -DBUILD_EXAMPLES=YES -DBUILD_SSL=NO -DBUILD_SHARED=YES ..
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-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
:
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-- Configuring done
-- Generating done
-- Build files have been written to: /cygdrive/d/Entwicklung/C++/restbed/restbed/build
Nice! Now follows:
make -j install
After 7% working, it gives a bunch of warnings and failed:
/cygdrive/{my_path_to}/restbed/restbed/dependency/asio/asio/include/asio/detail/config.hpp:755:5: warning: #warning Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately. [-Wcpp]
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^
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# warning For example, add -D_WIN32_WINNT=0x0501 to the compiler command line.
^
/cygdrive/{my_path_to}/restbed/restbed/dependency/asio/asio/include/asio/detail/config.hpp:757:5: warning: #warning Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target). [-Wcpp]
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I modifing config.hpp and add
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#define _WIN32_WINNT 0x0501
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The 'define bla' warnings dissapear, but now I should set '-D__USE_W32_SOCKETS'.
BUT WHERE?
After researching google I try to set a enviroment variable CPPFLAGS=-D__USE_W32_SOCKETS, but this change nothing!
OK, now I want give MinGW a chance, but how get I rid of this penetrant Cygwin, without deinstalling and get mess with other software?
Cool, should I set some enviroment variables....
Clean up the build-Directory and set CC and CXX as mentioned in cmake output.
SET CC=D:/MinGW/bin/gcc.exe
SET CXX=D:/MinGW/bin/g++.exe
Checking my PATH variable and adding ";D:\MinGW\mysys\1.0\bin;D:\MinGW\bin"
Now use cmake bla.. again...but... but... WHAT?
-- The C compiler identification is GNU 5.3.0
-- The CXX compiler identification is GNU 5.3.0
CMake Error at CMakeLists.txt:4 (project):
The CMAKE_C_COMPILER:
D:/MinGW/bin/gcc.exe
is not a full path and was not found in the PATH.
Tell CMake where to find the compiler by setting either the environment
variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
the compiler, or to the compiler name if it is in the PATH.
CMake Error at CMakeLists.txt:4 (project):
The CMAKE_CXX_COMPILER:
D:/MinGW/bin/g++.exe
is not a full path and was not found in the PATH.
Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "/cygdrive/{my_path_to}/restbed/restbed/build/CMakeFiles/CMakeOutput.log".
With Cygwin cmake says, I use gcc/g++ in version GNU 5.4.0. On the other hand, it detects the correct MinGW version as 5.3.0, but can't find it? Hu?
What can I do to get this library work under Windows 7?
EDIT BEGIN
To build makefiles for Code::Blocks, the -G parameter doesn't work. I try some combinations, but always say:
cmake -DBUILD_TESTS=YES -DBUILD_EXAMPLES=YES -DBUILD_SSL=NO -DBUILD_SHARED=YES -G "CodeBlocks" ..
CMake Error: Could not create named generator CodeBlocks
Generators
Unix Makefiles = Generates standard UNIX makefiles.
Ninja = Generates build.ninja files.
CodeBlocks - Ninja = Generates CodeBlocks project files.
CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.
:
:
cmake -DBUILD_TESTS=YES -DBUILD_EXAMPLES=YES -DBUILD_SSL=NO -DBUILD_SHARED=YES -G "CodeBlocks - Ninja" ..
CMake Error: CMake was unable to find a build program corresponding to "Ninja". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
Now this (many censored words) thing want to know the cmake-make?
My fault.... don't think about, what I've installed.
"CodeBlocks - Unix Makefiles" works as expected for generating project file, but can't compile under Code::Blocks. I changed compiler for project in 'Build options' to Cygwin, but says:
Execution of '/usr/bin/make.exe -j8 -f "/cygdrive/d/{my_path_to}/restbed/restbed/build/Makefile" VERBOSE=1 all' in 'D:\{my_path_to}\restbed\restbed\build' failed.
...and nothing more. Think it has to do with "Unix Makefile" under Windows.
EDIT END
I'm out of knowledge what to do, what to set, to delete, to modify, configure, aaaargh.
My last hope is, that someone has the big hint, a good idea or a workaround.
Thanks in advance.
Restbed can build with Visual Studio 2015/2017, why not use the native toolchain for that platform?

Cmake Error During Installation of dlib on Windows?

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I have a problem with this CMakeLists.txt file:
cmake_minimum_required(VERSION 2.6)
SET(CMAKE_C_COMPILER C:/MinGW/bin/gcc)
SET(CMAKE_CXX_COMPILER C:/MinGW/bin/g++)
project(cmake_test)
add_executable(a.exe test.cpp)
Calling cmake with: cmake -G "MinGW Makefiles" , it fails with the following output:
c:\Users\pietro.mele\projects\tests\buildSystem_test\cmake_test>cmake -G "MinGW Makefiles" .
-- The C compiler identification is GNU 4.6.1
-- The CXX compiler identification is GNU 4.6.1
-- Check for working C compiler: C:/MinGW/bin/gcc
CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name.
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CMakeLists.txt:10 (project)
CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name.
CMake Error: your CXX compiler: "C:/MinGW/bin/g++" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
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Any idea?
Platform:
Windows 7
MinGW/GCC 4.6
Never try to set the compiler in the CMakeLists.txt file.
See the CMake FAQ about how to use a different compiler:
https://gitlab.kitware.com/cmake/community/wikis/FAQ#how-do-i-use-a-different-compiler
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I had similar problem as Pietro,
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I tried to execute >>cmake -G "MinGW Makefiles", but I got the same error as Pietro.
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Using with FILEPATH option might work:
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SET(CMAKE_C_COMPILER C:/MinGW/bin/gcc.exe)
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