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      1 # Because compiler-rt spends a lot of time setting up custom compile flags,
      2 # define a handy helper function for it. The compile flags setting in CMake
      3 # has serious issues that make its syntax challenging at best.
      4 function(set_target_compile_flags target)
      5   set(argstring "")
      6   foreach(arg ${ARGN})
      7     set(argstring "${argstring} ${arg}")
      8   endforeach()
      9   set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
     10 endfunction()
     11 
     12 function(set_target_link_flags target)
     13   set(argstring "")
     14   foreach(arg ${ARGN})
     15     set(argstring "${argstring} ${arg}")
     16   endforeach()
     17   set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
     18 endfunction()
     19 
     20 # Set the variable var_PYBOOL to True if var holds a true-ish string,
     21 # otherwise set it to False.
     22 macro(pythonize_bool var)
     23   if (${var})
     24     set(${var}_PYBOOL True)
     25   else()
     26     set(${var}_PYBOOL False)
     27   endif()
     28 endmacro()
     29 
     30 # Appends value to all lists in ARGN, if the condition is true.
     31 macro(append_list_if condition value)
     32   if(${condition})
     33     foreach(list ${ARGN})
     34       list(APPEND ${list} ${value})
     35     endforeach()
     36   endif()
     37 endmacro()
     38 
     39 # Appends value to all strings in ARGN, if the condition is true.
     40 macro(append_string_if condition value)
     41   if(${condition})
     42     foreach(str ${ARGN})
     43       set(${str} "${${str}} ${value}")
     44     endforeach()
     45   endif()
     46 endmacro()
     47 
     48 macro(append_no_rtti_flag list)
     49   append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
     50   append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
     51 endmacro()
     52 
     53 macro(append_have_file_definition filename varname list)
     54   check_include_file("${filename}" "${varname}")
     55   if (NOT ${varname})
     56     set("${varname}" 0)
     57   endif()
     58   list(APPEND ${list} "${varname}=${${varname}}")
     59 endmacro()
     60 
     61 macro(list_union output input1 input2)
     62   set(${output})
     63   foreach(it ${${input1}})
     64     list(FIND ${input2} ${it} index)
     65     if( NOT (index EQUAL -1))
     66       list(APPEND ${output} ${it})
     67     endif()
     68   endforeach()
     69 endmacro()
     70