gcc/fixinc/fixinc.wrap

   1 #! /bin/sh
   2 # Create wrappers for include files instead of replacing them.
   3 #
   4 # This script is designed for systems whose include files can be fixed
   5 # by creating small wrappers around them.
   6 # An advantage of this method is that if the system include files are changed
   7 # (e.g. by OS upgrade), you need not re-run fixincludes.
   8 #
   9 # See README-fixinc for more information.
  10
  11 # Directory in which to store the results.
  12 LIB=${1?"fixincludes: output directory not specified"}
  13
  14 # Make sure it exists.
  15 if [ ! -d $LIB ]; then
  16   mkdir $LIB || exit 1
  17 fi
  18
  19 ORIG_DIR=`${PWDCMD-pwd}`
  20
  21 # Make LIB absolute if it is relative.
  22 # Don't do this if not necessary, since may screw up automounters.
  23 case $LIB in
  24 /*)
  25         ;;
  26 *)
  27         cd $LIB; LIB=`${PWDCMD-pwd}`
  28         ;;
  29 esac
  30
  31 echo Building fixed headers in ${LIB}
  32 # Directory containing the original header files.
  33 shift
  34 if [ $# -eq 0 ] ; then
  35   set /usr/include
  36 fi
  37
  38 INLIST="$@"
  39
  40 for INPUT in ${INLIST} ; do
  41 cd ${ORIG_DIR}
  42 cd ${INPUT}
  43
  44 # Some math.h files define struct exception, which conflicts with
  45 # the class exception defined in the C++ file std/stdexcept.h.  We
  46 # redefine it to __math_exception.  This is not a great fix, but I
  47 # haven't been able to think of anything better.
  48 file=math.h
  49 if [ -r $INPUT/$file ]; then
  50   echo Checking $INPUT/$file
  51   if grep 'struct exception' $INPUT/$file >/dev/null
  52   then
  53     echo Fixed $file
  54     rm -f $LIB/$file
  55     cat <<'__EOF__' >$LIB/$file
  56 #ifndef _MATH_H_WRAPPER
  57 #ifdef __cplusplus
  58 # define exception __math_exception
  59 #endif
  60  #include_next <math.h>
  61 #ifdef __cplusplus
  62 # undef exception
  63 #endif
  64 #define _MATH_H_WRAPPER
  65 #endif /* _MATH_H_WRAPPER */
  66 __EOF__
  67     # Define _MATH_H_WRAPPER at the end of the wrapper, not the start,
  68     # so that if #include_next gets another instance of the wrapper,
  69     # this will follow the #include_next chain until we arrive at
  70     # the real <math.h>.
  71     chmod a+r $LIB/$file
  72   fi
  73 fi
  74
  75 # Similarly for struct queue in sys/stream.h.
  76 file=sys/stream.h
  77 if [ -r $INPUT/$file ]; then
  78   echo Checking $INPUT/$file
  79   if grep 'struct[      ]*queue' $INPUT/$file >/dev/null
  80   then
  81     echo Fixed $file
  82     mkdir -p $LIB/`dirname $file`
  83     rm -f $LIB/$file
  84     cat <<'__EOF__' >$LIB/$file
  85 #ifndef _SYS_STREAM_H_WRAPPER
  86 #ifdef __cplusplus
  87 # define queue __stream_queue
  88 #endif
  89  #include_next <sys/stream.h>
  90 #ifdef __cplusplus
  91 # undef queue
  92 #endif
  93 #define _SYS_STREAM_H_WRAPPER
  94 #endif /* _SYS_STREAM_H_WRAPPER */
  95 __EOF__
  96     # Define _SYS_STREAM_H_WRAPPER at the end of the wrapper, not the start,
  97     # so that if #include_next gets another instance of the wrapper,
  98     # this will follow the #include_next chain until we arrive at
  99     # the real <sys/stream.h>.
 100     chmod a+r $LIB/$file
 101   fi
 102 fi
 103
 104 # Avoid the definition of the bool type in the Solaris 2.x curses.h when using
 105 # g++, since it's now an official type in the C++ language.
 106 file=curses.h
 107 if [ -r $INPUT/$file ]; then
 108   echo Checking $INPUT/$file
 109   w='[   ]'
 110   if grep "typedef$w$w*char$w$w*bool$w*;" $INPUT/$file >/dev/null
 111   then
 112     echo Fixed $file
 113     rm -f $LIB/$file
 114     cat <<'__EOF__' >$LIB/$file
 115 #ifndef _CURSES_H_WRAPPER
 116 #ifdef __cplusplus
 117 # define bool __curses_bool_t
 118 #endif
 119  #include_next <curses.h>
 120 #ifdef __cplusplus
 121 # undef bool
 122 #endif
 123 #define _CURSES_H_WRAPPER
 124 #endif /* _CURSES_H_WRAPPER */
 125 __EOF__
 126     # Define _CURSES_H_WRAPPER at the end of the wrapper, not the start,
 127     # so that if #include_next gets another instance of the wrapper,
 128     # this will follow the #include_next chain until we arrive at
 129     # the real <curses.h>.
 130     chmod a+r $LIB/$file
 131   fi
 132 fi
 133
 134 done
 135
 136 exit 0