Date: 09/25/07 (Code WTF)    Keywords: no keywords

#!/bin/bash
...
outputfile=".cpout"
SourceFiles=`find . -name "*.hpp" -o -name "*.cpp" -o -name "*.c" -o -name "*.h"`
IncludedFiles=`grep ^#include ${SourceFiles} | cut -f2- -d: | cut -f2- -d" " | grep -v "/\*\*/" | cut -f2 -d\" | cut -f1 -d\> | cut -f2- -d\< | sed "s/.*\///"|sort | sort -um`
Subdirs=`ls -p | grep /`
for Subdir in $Subdirs
do
        mkdir -p ${INCLUDE_DIR}/$Subdir
        for File in $IncludedFiles
        do
                cp -p $Subdir/$File ${INCLUDE_DIR}/$Subdir >& $outputfile
        done
done
rm -f $outputfile
...

Source: http://community.livejournal.com/code_wtf/105061.html