utils/check-each-file

   1 #!/bin/sh
   2 # check-each-file
   3 # Used to narrow down a miscompilation to one .o file from a list. Please read
   4 # the usage procedure, below, for command-line syntax (or run it with --help).
   5 # This script depends on the llvm-native-gcc script.
   6
   7 if [ x$1 = x--make-linker-script ]
   8 then
   9         program=$2
  10         linker=./link-$program
  11         echo "Building $program with llvm-native-gcc"
  12         rm -f $program
  13         gmake -s $program CC=llvm-native-gcc
  14         echo "Erasing $program and re-linking it"
  15         rm -f $program
  16         echo "rm -f $program" > $linker
  17         gmake -n $program >> $linker
  18         chmod 755 $linker
  19         echo "Linker script created in $linker; testing it out"
  20         output=`./$linker 2>&1`
  21         case "$output" in
  22                 *undefined*reference*__main*)
  23                         echo "$program appears to need a dummy __main function; adding one"
  24                         echo "void __main () { }" > __main.c
  25                         gcc -c __main.c
  26                         echo "Done; rebuilding $linker"
  27                         echo "rm -f $program" > $linker
  28                         gmake -n $program 2>&1 | sed '/gcc/s/$/__main.o/' >> $linker
  29                         ./$linker > /dev/null 2>&1
  30                         if [ ! -x $program ]
  31                         then
  32                                 echo "WARNING: linker script didn't work"
  33                         fi
  34                         ;;
  35                 *)
  36                         if [ ! -x $program ]
  37                         then
  38                                 echo "WARNING: linker script didn't work"
  39                         fi
  40                         ;;
  41         esac
  42         echo "Linker script created in $linker; please check it manually"
  43         exit 0
  44 fi
  45
  46 checkfiles="$1"
  47 program="$2"
  48 linker="$3"
  49 checker="$4"
  50
  51 usage () {
  52         myname=`basename $0`
  53         echo "$myname --make-linker-script PROGRAM"
  54         echo "$myname OBJECTS-FILE PROGRAM LINKER CHECKER"
  55         echo ""
  56         echo "OBJECTS-FILE is a text file containing the names of all the .o files"
  57         echo "PROGRAM is the name of the executable under test"
  58         echo "(there must also exist a Makefile in the current directory which
  59         echo "has PROGRAM as a target)"
  60         echo "LINKER is the script that builds PROGRAM; try --make-linker-script"
  61         echo "to automatically generate it"
  62         echo "CHECKER is the script that exits 0 if PROGRAM is ok, 1 if it is not OK"
  63         echo "(LINKER and CHECKER must be in your PATH, or you should specify ./)"
  64         echo ""
  65         echo "Bugs to <gaeke@uiuc.edu>."
  66         exit 1
  67 }
  68
  69 if [ x$1 = x--help ]
  70 then
  71         usage
  72 fi
  73
  74 if [ -z "$checkfiles" ]
  75 then
  76         echo "ERROR: Must specify name of file w/ list of objects as 1st arg."
  77         echo "(got \"$checkfiles\")"
  78         usage
  79 fi
  80 if [ ! -f "$checkfiles" ]
  81 then
  82         echo "ERROR: $checkfiles not found"
  83         usage
  84 fi
  85 if [ -z "$program" ]
  86 then
  87         echo "ERROR: Must specify name of program as 2nd arg."
  88         usage
  89 fi
  90 if [ -z "$linker" ]
  91 then
  92         echo "ERROR: Must specify name of link script as 3rd arg."
  93         usage
  94 fi
  95 if [ ! -x "$linker" ]
  96 then
  97         echo "ERROR: $linker not found or not executable"
  98         echo "You may wish to try: $0 --make-linker-script $program"
  99         usage
 100 fi
 101 if [ -z "$checker" ]
 102 then
 103         echo "ERROR: Must specify name of $program check script as 3rd arg."
 104         usage
 105 fi
 106 if [ ! -x "$checker" ]
 107 then
 108         echo "ERROR: $checker not found or not executable"
 109         usage
 110 fi
 111
 112 files=`cat $checkfiles`
 113 echo "Recompiling everything with llvm-native-gcc"
 114 for f in $files
 115 do
 116         rm -f $f && gmake $f CC=llvm-native-gcc
 117 done
 118 if $checker
 119 then
 120         echo "Sorry, I can't help you, $program is OK when compiled with llvm-native-gcc"
 121         exit 1
 122 fi
 123 for f in $files
 124 do
 125         echo Trying to compile $f with native gcc and rebuild $program
 126         mv ${f} ${f}__OLD__
 127         gmake ${f} CC=gcc > /dev/null 2>&1
 128         $linker
 129         echo Checking validity of new $program
 130         if $checker
 131         then
 132                 echo Program is OK
 133                 okfiles="$okfiles $f"
 134         else
 135                 echo Program is not OK
 136                 notokfiles="$notokfiles $f"
 137         fi
 138         mv ${f}__OLD__ ${f}
 139 done
 140 echo ""
 141 echo "Program is OK when these files are recompiled with native gcc: "
 142 echo "$okfiles"
 143 echo ""
 144 echo "Program is not OK when these files are recompiled with native gcc: "
 145 echo "$notokfiles"
 146 echo ""
 147 exit 0