#!/bin/sh # ---------------------------------------------------------------------------- # "THE BEER-WARE LICENSE" (Revision 42): # wrote this file. As long as you retain this notice you # can do whatever you want with this stuff. If we meet some day, and you think # this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp # ---------------------------------------------------------------------------- # # $FreeBSD: stable/11/tools/tools/kerninclude/kerninclude.sh 75872 2001-04-23 17:31:16Z phk $ # # This script tries to find #include statements which are not needed in # the FreeBSD kernel tree. # set -e # Base of the kernel sources you want to work on cd /sys # Set to true to start from scratch, false to resume init=false # Which kernels you want to check kernels="LINT GENERIC GENERIC98" NO_MODULES=yes export NO_MODULES if $init ; then ( echo "Cleaning modules" cd modules make clean > /dev/null 2>&1 make cleandir > /dev/null 2>&1 make cleandir > /dev/null 2>&1 make clean > /dev/null 2>&1 make clean > /dev/null 2>&1 ) ( echo "Cleaning compile" cd compile ls | grep -v CVS | xargs rm -rf ) fi ( echo "Cleaning temp files" find . -name '*.h_' -print | xargs rm -f find . -name '::*' -print | xargs rm -f find . -name '*.o' -size 0 -print | xargs rm -f ) echo "Configuring kernels" ( cd i386/conf make LINT if $init ; then rm -rf ../../compile/LINT ../../compile/GENERIC fi config LINT config GENERIC ) ( cd pc98/conf cp -f GENERIC GENERIC98 if $init ; then rm -rf ../../compile/GENERIC98 fi config GENERIC98 ) for i in $kernels do ( echo "Compiling $i" cd compile/$i make > x.0 2>&1 tail -4 x.0 if [ ! -f kernel ] ; then echo "Error: No $i kernel built" exit 1 fi ) done ( echo "Compiling modules" cd modules make > x.0 2>&1 ) # Generate the list of object files we want to check # you can put a convenient grep right before the sort # if you want just some specific subset of files checked ( cd modules for i in * do if [ -d $i -a $i != CVS ] ; then ( cd $i ; ls *.o 2>/dev/null || true) fi done cd ../compile for i in $kernels do ( cd $i ; ls *.o 2>/dev/null ) done ) | sed ' /aicasm/d /genassym/d /vers.o/d /setdef0.o/d /setdef1.o/d ' | sort -u > _ objlist=`cat _` for o in $objlist do l="" src="" for k in $kernels do if [ ! -f compile/$k/$o ] ; then continue; fi l="$l compile/$k" if [ "x$src" = "x" ] ; then cd compile/$k mv $o ${o}_ make -n $o > _ mv ${o}_ $o src=compile/$k/`awk '$1 == "cc" {print $NF}' _` cd ../.. if expr "x$src" : 'x.*\.c$' > /dev/null ; then true else echo NO SRC $o src="" fi fi done for m in modules/* do if [ ! -d $m -o ! -f $m/$o ] ; then continue; fi l="$l $m" if [ "x$src" = "x" ] ; then cd $m mv $o ${o}_ make -n $o > _ mv ${o}_ $o src=`awk '$1 == "cc" {print $NF}' _` cd ../.. if expr "x$src" : 'x.*\.c$' > /dev/null ; then if [ "`dirname $src`" = "." ] ; then src="$m/$src" fi true else echo NO SRC $o src="" fi fi done if [ "x$src" = "x" ] ; then echo "NO SOURCE $o" continue fi echo "OBJ $o" echo " SRC $src" grep -n '^[ ]*#[ ]*include' $src | sed ' s/^\([0-9]*\):[ ]*#[ ]*include[ ]*[<"]/\1 / s/[">].*// / opt_/d ' | sort -rn | while read lin incl do S="" echo " INCL $lin $incl" cp $src ${src}_ # Check if we can compile without this #include line. sed "${lin}s/.*//" ${src}_ > ${src} for t in $l do cd $t mv ${o} ${o}_ if make ${o} > _log 2>&1 ; then if cmp -s ${o} ${o}_ ; then echo " $t same object" else echo " $t changed object" S=TAG fi else echo " $t used" S=TAG fi mv ${o}_ ${o} cd ../.. if [ "x$S" != "x" ] ; then break fi done if [ "x$S" != "x" ] ; then mv ${src}_ ${src} continue fi # Check if this is because it is a nested #include for t in $l do cd $t rm -rf foo mkdir -p foo/${incl} rmdir foo/${incl} touch foo/${incl} mv ${o} ${o}_ if make INCLMAGIC=-Ifoo ${o} > _log2 2>&1 ; then if cmp -s ${o} ${o}_ ; then echo " $t still same object" else echo " $t changed object" S=TAG fi else echo " $t nested include" S=TAG fi rm -rf foo mv ${o}_ ${o} cd ../.. if [ "x$S" != "x" ] ; then break fi done if [ "x$S" != "x" ] ; then mv ${src}_ ${src} continue fi # Check if this is because it is #ifdef'ed out sed "${lin}s/.*/#error \"BARF\"/" ${src}_ > ${src} for t in $l do cd $t mv ${o} ${o}_ if make ${o} > /dev/null 2>&1 ; then echo " $t line not read" S=TAG fi mv ${o}_ ${o} cd ../.. if [ "x$S" != "x" ] ; then break fi done mv ${src}_ ${src} if [ "x$S" != "x" ] ; then continue fi # Check if the warnings changed. for t in $l do cd $t mv ${o} ${o}_ if make ${o} > _ref 2>&1 ; then if cmp -s _ref _log ; then echo " $t same warnings" else echo " $t changed warnings" S=TAG fi else echo "ARGHH!!!" exit 9 fi mv ${o}_ ${o} cd ../.. if [ "x$S" != "x" ] ; then break fi done if [ "x$S" != "x" ] ; then continue fi cp $src ${src}_ sed "${lin}d" ${src}_ > ${src} rm ${src}_ touch _again echo "BINGO $src $lin $incl $obj $l" done done