# Add -O0 to remove optimizations when using gcc
IF(CMAKE_COMPILER_IS_GNUCC)
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0")
    set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0")
ENDIF(CMAKE_COMPILER_IS_GNUCC)

SET(CMAKE_CXX_FLAGS_DEBUG "-O0")
SET(CMAKE_C_FLAGS_DEBUG "-O0")

$ cmake -DCMAKE_BUILD_TYPE=Debug

SET(CMAKE_CXX_FLAGS "-O0")
SET(CMAKE_C_FLAGS "-O0")

cmake -DCMAKE_BUILD_TYPE=DEBUG -DCMAKE_C_FLAGS_DEBUG="-g -O0"

make VERBOSE=1