MinGw can't compile test file from cmake - c++

Question

I installed MinGW from the official website, and I'm trying to compile a simple cmake project.
I did
cmake -G"MinGw Makefiles" .
and got:
CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/CMakeTestCCompiler.cmake:60 (message):
The C compiler
"C:/MinGW/bin/gcc.exe"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: C:/Users/LZ/Desktop/roosek_ocr/CMakeFiles/CMakeTmp
Run Build Command(s):C:/MinGW/bin/mingw32-make.exe cmTC_3eeac/fast && C:/MinGW/bin/mingw32-make.exe -f CMakeFiles\cmTC_3eeac.dir\build.make CMakeFiles/cmTC_3eeac.dir/build
mingw32-make.exe[1]: Entering directory 'C:/Users/LZ/Desktop/roosek_ocr/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj
C:\MinGW\bin\gcc.exe -o CMakeFiles\cmTC_3eeac.dir\testCCompiler.c.obj -c C:\Users\LZ\Desktop\roosek_ocr\CMakeFiles\CMakeTmp\testCCompiler.c
CMakeFiles\cmTC_3eeac.dir\build.make:81: recipe for target 'CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj' failed mingw32-make.exe[1]: *** [CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj] Error 1
mingw32-make.exe[1]: Leaving directory 'C:/Users/LZ/Desktop/roosek_ocr/CMakeFiles/CMakeTmp'
Makefile:137: recipe for target 'cmTC_3eeac/fast' failed
mingw32-make.exe: *** [cmTC_3eeac/fast] Error 2
I found https://stackoverflow.com/a/55941909/6655884 but I looked at my path and I couldn't find sh.exe. Atually I don't know if it's there. How can I check? Typing sh on powershell, it complains that it's not a command or a script or anything.
Other posts talk about MinGw installed through chocolatey, which is not my case.
UPDATE:
Here's the CMakeError.log:
Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler: C:/MinGW/bin/gcc.exe
Build flags:
Id flags: --target=arm-arm-none-eabi;-mcpu=cortex-m3
The output was:
1
gcc.exe: warning: '-mcpu=' is deprecated; use '-mtune=' or '-march=' instead
gcc.exe: error: unrecognized command line option '--target=arm-arm-none-eabi'
Checking whether the C compiler is IAR using "" did not match "IAR .+ Compiler":
gcc.exe: fatal error: no input files
compilation terminated.
Checking whether the C compiler is IAR using "" did not match "IAR .+ Compiler":
gcc.exe: fatal error: no input files
compilation terminated.
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
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
g++.exe: error: unrecognized command line option '--c++'
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: C:/MinGW/bin/g++.exe
Build flags:
Id flags: --ec++
The output was:
1
g++.exe: error: unrecognized command line option '--ec++'; did you mean '-Weffc++'?
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: C:/MinGW/bin/g++.exe
Build flags:
Id flags: --target=arm-arm-none-eabi;-mcpu=cortex-m3
The output was:
1
g++.exe: warning: '-mcpu=' is deprecated; use '-mtune=' or '-march=' instead
g++.exe: error: unrecognized command line option '--target=arm-arm-none-eabi'
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
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
g++.exe: error: unrecognized command line option '--c++'
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: C:/MinGW/bin/g++.exe
Build flags:
Id flags: --ec++
The output was:
1
g++.exe: error: unrecognized command line option '--ec++'; did you mean '-Weffc++'?
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: C:/MinGW/bin/g++.exe
Build flags:
Id flags: --target=arm-arm-none-eabi;-mcpu=cortex-m3
The output was:
1
g++.exe: warning: '-mcpu=' is deprecated; use '-mtune=' or '-march=' instead
g++.exe: error: unrecognized command line option '--target=arm-arm-none-eabi'
Checking whether the CXX compiler is IAR using "" did not match "IAR .+ Compiler":
g++.exe: fatal error: no input files
compilation terminated.
Checking whether the CXX compiler is IAR using "" did not match "IAR .+ Compiler":
g++.exe: fatal error: no input files
Determining if the C compiler works failed with the following output:
Run Build Command(s):C:/MinGW/bin/mingw32-make.exe cmTC_3eeac/fast && C:/MinGW/bin/mingw32-make.exe -f CMakeFiles\cmTC_3eeac.dir\build.make CMakeFiles/cmTC_3eeac.dir/build
mingw32-make.exe[1]: Entering directory 'C:/Users/LZ/Desktop/roosek_ocr/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj
C:\MinGW\bin\gcc.exe -o CMakeFiles\cmTC_3eeac.dir\testCCompiler.c.obj -c C:\Users\LZ\Desktop\roosek_ocr\CMakeFiles\CMakeTmp\testCCompiler.c
CMakeFiles\cmTC_3eeac.dir\build.make:81: recipe for target 'CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj' failed
mingw32-make.exe[1]: *** [CMakeFiles/cmTC_3eeac.dir/testCCompiler.c.obj] Error 1
mingw32-make.exe: *** [cmTC_3eeac/fast] Error 2

Answer 1

I've run into this issue as well and am still looking for a solution. The only way I've been able to get around this issue is to add the CMAKE_CXX_COMPILER_WORKS=1 flag.