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#.rst:
# FindIncludeWhatYouUse
# ---------------------
# Finds include-what-you-use and sets it up to run along with the compiler for C and CXX.
find_program(IWYU_EXECUTABLE NAMES include-what-you-use iwyu)
if(IWYU_EXECUTABLE)
execute_process(COMMAND "${IWYU_EXECUTABLE}" --version
OUTPUT_VARIABLE IWYU_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REGEX MATCH "[^\n]*include-what-you-use [^\n]*" IWYU_VERSION "${IWYU_VERSION}")
string(REGEX REPLACE "include-what-you-use ([^ \n\r\t]+).*" "\\1" IWYU_VERSION "${IWYU_VERSION}")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(IncludeWhatYouUse REQUIRED_VARS IWYU_EXECUTABLE
VERSION_VAR IWYU_VERSION)
if(INCLUDEWHATYOUUSE_FOUND)
# Supports Unix Makefiles and Ninja
set(CMAKE_C_INCLUDE_WHAT_YOU_USE "${IWYU_EXECUTABLE}" PARENT_SCOPE)
set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE "${IWYU_EXECUTABLE}" PARENT_SCOPE)
endif()
mark_as_advanced(IWYU_EXECUTABLE)
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