Make chart in stats screen support negative numbers. Fixes e.g. Mutant
#find package helpers
macro(find_package_or_fail _PKG_NAME)
find_package(${_PKG_NAME})
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
if(NOT ${_PKG_NAME_UP}_FOUND)
message(SEND_ERROR "Missing ${_PKG_NAME}! Please install it and rerun cmake.")
endif(NOT ${_PKG_NAME_UP}_FOUND)
endmacro(find_package_or_fail _PKG_NAME)
macro(find_package_or_disable _PKG_NAME _VAR_NAME)
find_package(${_PKG_NAME})
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
if(NOT ${_PKG_NAME_UP}_FOUND)
message(SEND_ERROR "Missing ${_PKG_NAME}! Rerun cmake with -D${_VAR_NAME}=1 to skip this error.")
endif(NOT ${_PKG_NAME_UP}_FOUND)
endmacro(find_package_or_disable _PKG_NAME _VAR_NAME)
macro(find_package_or_disable_msg _PKG_NAME _VAR_NAME _MSG)
if(NOT ${_VAR_NAME})
find_package_or_disable(${_PKG_NAME} ${_VAR_NAME})
else(NOT ${_VAR_NAME})
message(STATUS "${_PKG_NAME} disabled. ${_MSG}")
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
set(${_PKG_NAME_UP}_FOUND false)
endif(NOT ${_VAR_NAME})
endmacro(find_package_or_disable_msg _PKG_NAME _VAR_NAME _MSG)
#variable manipulation macros
macro(add_flag_append _VAR_NAME _FLAG)
set(${_VAR_NAME} "${${_VAR_NAME}} ${_FLAG}")
endmacro(add_flag_append _VAR_NAME _FLAG)
macro(add_flag_prepend _VAR_NAME _FLAG)
set(${_VAR_NAME} "${_FLAG} ${${_VAR_NAME}}")
endmacro(add_flag_prepend _VAR_NAME _FLAG)
macro(add_linker_flag _FLAG)
list(APPEND haskell_flags "-optl" "-Wl,${_FLAG}")
#executables
add_flag_append(CMAKE_C_LINK_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_CXX_LINK_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_Pascal_LINK_FLAGS "-k${_FLAG}")
#libraries
add_flag_append(CMAKE_SHARED_LIBRARY_C_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-Wl,${_FLAG}")
#CMAKE_SHARED_LIBRARY_Pascal_FLAGS is already set by CMAKE_Pascal_LINK_FLAGS
endmacro(add_linker_flag _FLAG)
#TODO: find_package_or_bundle