Generate ctags file for C or C++ files and its depedencies (included header files). This could avoid you to always generate a huge tags file.

ctags_with_dep.sh

#!/bin/bash

function usage() {
    echo "Usage:"
    echo "      ./ctags_with_dep.sh file1.c file2.cpp"
}

CFLAGS="`pkg-config --cflags ImageMagick++ freetype2 fontconfig assimp` -I../Include -IFreetypeGL -I../Common/FreetypeGL"

if [ -n "$1" ]; then
    gcc $CFLAGS -M $* \
        | sed -e 's/[\\ ]/\n/g' \
        | sed -e '/^$/d' -e '/\.o:[ \t]*$/d' \
        | ctags -L - --c++-kinds=+p --fields=+iaS --extra=+q
else
    usage
fi