Add CI pipeline with Github Actions

[GiulioRomualdi]

No description provided.

[diegoferigo]

nitpick: if you pass shell: bash the shell is Git Bash and you can use familiar commands also on windows

[S-Dafarra]

I guess we do need this 😁

[GiulioRomualdi]

On windows is still failing with the following error

2020-05-14T10:42:58.3914037Z D:\a\osqp-eigen\osqp-eigen\tests\MPCTest.cpp(75,14): error C2065: 'M_PI': undeclared identifier [D:\a\osqp-eigen\osqp-eigen\build\tests\MPCUnitTests.vcxproj]

even if I added

osqp-eigen/tests/MPCTest.cpp

Lines 20 to 21 in bb6361f

	#define _USE_MATH_DEFINES
	#include <cmath>

Do you have any hints? @S-Dafarra @traversaro

[traversaro]

On windows is still failing with the following error

2020-05-14T10:42:58.3914037Z D:\a\osqp-eigen\osqp-eigen\tests\MPCTest.cpp(75,14): error C2065: 'M_PI': undeclared identifier [D:\a\osqp-eigen\osqp-eigen\build\tests\MPCUnitTests.vcxproj]

even if I added

osqp-eigen/tests/MPCTest.cpp

Lines 20 to 21 in bb6361f

	#define _USE_MATH_DEFINES
	#include <cmath>

Do you have any hints? @S-Dafarra @traversaro

Either the math.h or cmath header has been transitively included by the headers included before the line that defines _USE_MATH_DEFINES in that compilation unit. To fix this, either move the definition of _USE_MATH_DEFINES before any other include, or pass it via command line (i.e. via CMake's target_compile_definitions).