Create cscope & ctags tags recursively (C/C++) ref: https://qiita.com/faiyadesu/items/b916c1aaed731d2bcb53

file0.txt

#!/bin/bash

CSCOPE_DIR="$PWD/cscope"

if [ ! -d "$CSCOPE_DIR" ]; then
    mkdir "$CSCOPE_DIR"
fi

echo "finding files..."
gcc -M `pkg-config --cflags --libs lilv-0` `pkg-config --cflags --libs suil-0` \
    `find . -name "*.h" -printf "%h\n" | awk '!x[$0]++' | sed -e 's/^/-I /'` \
    `pkg-config --cflags --libs sord-0` \
    `find /usr/include/x86_64-linux-gnu/qt5/ -type d -print | sed -e 's/^/-I /'` \
    `pkg-config --cflags --libs gtk+-2.0` `pkg-config --cflags --libs glib-2.0` \
    `pkg-config --cflags --libs gtkmm-2.4`\
    -fPIC "$@" | sed -e 's/[\\ ]/\n/g' | \
    sed -e '/^$/d' -e '/\.o:[ \t]*$/d' > "$CSCOPE_DIR/cscope.files.tmp"
awk '!a[$0]++' "$CSCOPE_DIR/cscope.files.tmp" > "$CSCOPE_DIR/cscope.files"
rm "$CSCOPE_DIR/cscope.files.tmp"

echo "building cscope db...."
cscope -b -i "$CSCOPE_DIR/cscope.files"
echo "building ctags db..."
ctags -L "$CSCOPE_DIR/cscope.files" --c++-kinds=+p --fields=+iaS --extra=+q