check-each-file
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#!/bin/sh
# check-each-file
# Used to narrow down a miscompilation to one .o file from a list. Please read
# the usage procedure, below, for command-line syntax (or run it with --help).
# This script depends on the llvm-native-gcc script.
if [ x$1 = x--make-linker-script ]
then
program=$2
linker=./link-$program
echo "Building $program with llvm-native-gcc"
rm -f $program
gmake -e $program CC=llvm-native-gcc CXX=llvm-native-gxx
echo "Erasing $program and re-linking it"
rm -f $program
echo "rm -f $program" > $linker
gmake -n $program >> $linker
chmod 755 $linker
echo "Linker script created in $linker; testing it out"
output=`./$linker 2>&1`
case "$output" in
*undefined*reference*__main*)
echo "$program appears to need a dummy __main function; adding one"
echo "void __main () { }" > __main.c
gcc -c __main.c
echo "Done; rebuilding $linker"
echo "rm -f $program" > $linker
gmake -n $program 2>&1 | sed '/gcc/s/$/__main.o/' >> $linker
./$linker > /dev/null 2>&1
if [ ! -x $program ]
then
echo "WARNING: linker script didn't work"
fi
;;
*)
if [ ! -x $program ]
then
echo "WARNING: linker script didn't work"
fi
;;
esac
echo "Linker script created in $linker; please check it manually"
exit 0
fi
checkfiles="$1"
program="$2"
linker="$3"
checker="$4"
usage () {
myname=`basename $0`
echo "$myname --make-linker-script PROGRAM"
echo "$myname OBJECTS-FILE PROGRAM LINKER CHECKER"
echo ""
echo "OBJECTS-FILE is a text file containing the names of all the .o files"
echo "PROGRAM is the name of the executable under test"
echo "(there must also exist a Makefile in the current directory which"
echo "has PROGRAM as a target)"
echo "LINKER is the script that builds PROGRAM; try --make-linker-script"
echo "to automatically generate it"
echo "CHECKER is the script that exits 0 if PROGRAM is ok, 1 if it is not OK"
echo "(LINKER and CHECKER must be in your PATH, or you should specify ./)"
echo ""
echo "Bugs to <gaeke@uiuc.edu>."
exit 1
}
if [ x$1 = x--help ]
then
usage
fi
if [ -z "$checkfiles" ]
then
echo "ERROR: Must specify name of file w/ list of objects as 1st arg."
echo "(got \"$checkfiles\")"
usage
fi
if [ ! -f "$checkfiles" ]
then
echo "ERROR: $checkfiles not found"
usage
fi
if [ -z "$program" ]
then
echo "ERROR: Must specify name of program as 2nd arg."
usage
fi
if [ -z "$linker" ]
then
echo "ERROR: Must specify name of link script as 3rd arg."
usage
fi
if [ ! -x "$linker" ]
then
echo "ERROR: $linker not found or not executable"
echo "You may wish to try: $0 --make-linker-script $program"
usage
fi
if [ -z "$checker" ]
then
echo "ERROR: Must specify name of $program check script as 3rd arg."
usage
fi
if [ ! -x "$checker" ]
then
echo "ERROR: $checker not found or not executable"
usage
fi
files=`cat $checkfiles`
echo "Recompiling everything with llvm-native-gcc"
for f in $files
do
rm -f $f
gmake $f CC=llvm-native-gcc CXX=llvm-native-gxx
done
rm -f $program
$linker
if $checker
then
echo "Sorry, I can't help you, $program is OK when compiled with llvm-native-gcc"
exit 1
fi
for f in $files
do
echo Trying to compile $f with native gcc and rebuild $program
mv ${f} ${f}__OLD__
gmake ${f} CC=gcc > /dev/null 2>&1
$linker
echo Checking validity of new $program
if $checker
then
echo Program is OK
okfiles="$okfiles $f"
else
echo Program is not OK
notokfiles="$notokfiles $f"
fi
mv ${f}__OLD__ ${f}
done
echo ""
echo "Program is OK when these files are recompiled with native gcc: "
echo "$okfiles"
echo ""
echo "Program is not OK when these files are recompiled with native gcc: "
echo "$notokfiles"
echo ""
exit 0