gcc/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 containing the original header files.
  12 # (This was named INCLUDES, but that conflicts with a name in Makefile.in.)
  13 INPUT=${2-${INPUT-/usr/include}}
  14
  15 # Directory in which to store the results.
  16 LIB=${1?"fixincludes: output directory not specified"}
  17
  18 # Make sure it exists.
  19 if [ ! -d $LIB ]; then
  20   mkdir $LIB || exit 1
  21 fi
  22
  23 echo Building fixed headers in ${LIB}
  24
  25 # Some math.h files define struct exception, which conflicts with
  26 # the class exception defined in the C++ file std/stdexcept.h.  We
  27 # redefine it to __math_exception.  This is not a great fix, but I
  28 # haven't been able to think of anything better.
  29 file=math.h
  30 if [ -r $INPUT/$file ]; then
  31   echo Checking $INPUT/$file
  32   if grep 'struct exception' $INPUT/$file >/dev/null
  33   then
  34     echo Fixed $file
  35     rm -f $LIB/$file
  36     cat <<'__EOF__' >$LIB/$file
  37 #ifndef _MATH_H_WRAPPER
  38 #ifdef __cplusplus
  39 # define exception __math_exception
  40 #endif
  41 #include_next <math.h>
  42 #ifdef __cplusplus
  43 # undef exception
  44 #endif
  45 #define _MATH_H_WRAPPER
  46 #endif /* _MATH_H_WRAPPER */
  47 __EOF__
  48     # Define _MATH_H_WRAPPER at the end of the wrapper, not the start,
  49     # so that if #include_next gets another instance of the wrapper,
  50     # this will follow the #include_next chain until we arrive at
  51     # the real <math.h>.
  52     chmod a+r $LIB/$file
  53   fi
  54 fi
  55
  56 # Avoid the definition of the bool type in the Solaris 2.x curses.h when using
  57 # g++, since it's now an official type in the C++ language.
  58 file=curses.h
  59 if [ -r $INPUT/$file ]; then
  60   echo Checking $INPUT/$file
  61   w='[   ]'
  62   if grep "typedef$w$w*char$w$w*bool$w*;" $INPUT/$file >/dev/null
  63   then
  64     echo Fixed $file
  65     rm -f $LIB/$file
  66     cat <<'__EOF__' >$LIB/$file
  67 #ifndef _CURSES_H_WRAPPER
  68 #ifdef __cplusplus
  69 # define bool __curses_bool_t
  70 #endif
  71 #include_next <curses.h>
  72 #ifdef __cplusplus
  73 # undef bool
  74 #endif
  75 #define _CURSES_H_WRAPPER
  76 #endif /* _CURSES_H_WRAPPER */
  77 __EOF__
  78     # Define _CURSES_H_WRAPPER at the end of the wrapper, not the start,
  79     # so that if #include_next gets another instance of the wrapper,
  80     # this will follow the #include_next chain until we arrive at
  81     # the real <curses.h>.
  82     chmod a+r $LIB/$file
  83   fi
  84 fi
  85
  86 exit 0