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# Custom build type "Reference", to be used for creating new
# reference values in the GROMACS regression tests.
set( CMAKE_CXX_FLAGS_REFERENCE "-O0 -g" CACHE STRING "C++ flags for regressiontests reference runs." FORCE)
set( CMAKE_C_FLAGS_REFERENCE "-O0 -g" CACHE STRING "C flags for regressiontests reference runs." FORCE)
set( CMAKE_EXE_LINKER_FLAGS_REFERENCE "" CACHE STRING "Linker flags for regressiontests reference runs.")
mark_as_advanced( CMAKE_CXX_FLAGS_REFERENCE CMAKE_C_FLAGS_REFERENCE CMAKE_EXE_LINKER_FLAGS_REFERENCE)

# turn off all fancy options for the regressiontests reference build
if("${CMAKE_BUILD_TYPE}" STREQUAL "Reference")
    set(GMX_GPU OFF CACHE BOOL "Disabled for regressiontests reference builds" FORCE)
    set(GMX_OPENMP OFF CACHE BOOL "Disabled for regressiontests reference builds" FORCE)
    set(GMX_SIMD "None" CACHE STRING "Disabled for regressiontests reference builds" FORCE)
    set(GMX_FFT_LIBRARY "fftpack" CACHE STRING "Use fftpack for regressiontests reference builds" FORCE)
    set(GMX_SOFTWARE_INVSQRT OFF CACHE BOOL "Disabled for regressiontests reference builds" FORCE)
    set(GMX_THREAD_MPI OFF CACHE BOOL "Disabled for regressiontests reference builds" FORCE)

    if(NOT "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_VERSION}" VERSION_GREATER_EQUAL "8")
        message(WARNING "Reference values for regressiontests should use GROMACS compiled with "
            "gcc 7.x, but your configuration is using ${CMAKE_C_COMPILER_ID}-${CMAKE_C_COMPILER_VERSION}.")
    endif()
endif()
