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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)
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
endfunction()
function(set_target_link_flags target)
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
endfunction()
# Check if a given flag is present in a space-separated flag_string.
# Store the result in out_var.
function(find_flag_in_string flag_string flag out_var)
string(REPLACE " " ";" flag_list "${flag_string}")
list(FIND flag_list ${flag} flag_pos)
if(NOT flag_pos EQUAL -1)
set(${out_var} TRUE PARENT_SCOPE)
else()
set(${out_var} FALSE PARENT_SCOPE)
endif()
endfunction()
# Set the variable var_PYBOOL to True if var holds a true-ish string,
# otherwise set it to False.
macro(pythonize_bool var)
if (${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_if condition value)
if(${condition})
foreach(list ${ARGN})
list(APPEND ${list} ${value})
endforeach()
endif()
endmacro()
macro(append_no_rtti_flag list)
append_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
append_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
endmacro()
macro(add_definitions_if condition)
if(${condition})
add_definitions(${ARGN})
endif()
endmacro()
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