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# Because compiler-rt spends a lot of time setting up custom compile flags,
# define a handy helper function for it. The compile flags setting in CMake
# has serious issues that make its syntax challenging at best.
function(set_target_compile_flags target)
  set(argstring "")
  foreach(arg ${ARGN})
    set(argstring "${argstring} ${arg}")
  endforeach()
  set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
endfunction()

function(set_target_link_flags target)
  set(argstring "")
  foreach(arg ${ARGN})
    set(argstring "${argstring} ${arg}")
  endforeach()
  set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
endfunction()

# Set the variable var_PYBOOL to True if var holds a true-ish string,
# otherwise set it to False.
macro(pythonize_bool var)
  if (${var})
    set(${var}_PYBOOL True)
  else()
    set(${var}_PYBOOL False)
  endif()
endmacro()

# Appends value to all lists in ARGN, if the condition is true.
macro(append_list_if condition value)
  if(${condition})
    foreach(list ${ARGN})
      list(APPEND ${list} ${value})
    endforeach()
  endif()
endmacro()

# Appends value to all strings in ARGN, if the condition is true.
macro(append_string_if condition value)
  if(${condition})
    foreach(str ${ARGN})
      set(${str} "${${str}} ${value}")
    endforeach()
  endif()
endmacro()

macro(append_no_rtti_flag list)
  append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
  append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
endmacro()