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###############################################################################
# Top contributors (to current version):
# Gereon Kremer
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
# in the top-level source directory and their institutional affiliations.
# All rights reserved. See the file COPYING in the top-level source
# directory for licensing information.
# #############################################################################
#
# Checks if include-what-you-use is available.
# If so, create appropriate targets to run it on the whole code base or
# individual folders.
##
find_program(IWYU_PATH NAMES iwyu_tool iwyu-tool)
if(IWYU_PATH)
# iwyu is available
message(STATUS "Found IWYU: ${IWYU_PATH}")
# add a target to inspect number of times headers are included.
add_custom_target(iwyu-list-includes
COMMAND grep -hor "\"#include .*\"" ${PROJECT_SOURCE_DIR}/src | sort | uniq -c | sort -n
)
# find the standard library directory
find_program(CLANG_PATH clang REQUIRED)
execute_process(COMMAND ${CLANG_PATH} -print-resource-dir
OUTPUT_VARIABLE LLVM_INCLUDE_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(LLVM_INCLUDE_DIR)
set(LLVM_INCLUDE_DIR "-I${LLVM_INCLUDE_DIR}/include")
endif()
# add a target to run iwyu on all files (within the compilation database)
add_custom_target(iwyu-all
COMMAND ${IWYU_PATH} -o clang -p . -- -Xiwyu --cxx17ns ${LLVM_INCLUDE_DIR}
)
file(GLOB subdirs ${PROJECT_SOURCE_DIR}/src/*)
foreach(dir ${subdirs})
# add a target for every subdirectory
file(GLOB_RECURSE source_files
${dir}/*.cpp
${dir}/*.cc
)
get_filename_component(dirname ${dir} NAME)
add_custom_target(iwyu-${dirname}
COMMAND ${IWYU_PATH} -o clang -p . ${source_files} -- -Xiwyu --cxx17ns ${LLVM_INCLUDE_DIR}
)
endforeach()
endif()
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