1 | #! /bin/sh |
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2 | # Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t). |
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3 | # Emits macros definitions for these, and some other types. |
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4 | # Intended to be used to massage the sys-protos.h file. |
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5 | # Expects one arg, which is the GCC source directory. |
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6 | |
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7 | CC=${CC-"./xgcc -B$1/"} |
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8 | CPP=${CPP-`echo ${CC} -E -I"$1/"`} |
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9 | SED=sed |
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10 | |
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11 | # Generate definitions for the standard types (such as mode_t) |
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12 | # compatible with those in the standard C header files. |
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13 | # It works by a dummy program through the C pre-processor, and then |
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14 | # using sed to search for typedefs in the output. |
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15 | |
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16 | cat >st-dummy.c <<!EOF! |
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17 | #include <sys/types.h> |
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18 | #include <stddef.h> |
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19 | #include <stdarg.h> |
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20 | #include <stdio.h> |
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21 | #include <time.h> |
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22 | #include <signal.h> |
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23 | #ifdef size_t |
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24 | typedef size_t Xsize_t; |
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25 | #elif defined(__SIZE_TYPE__) |
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26 | typedef __SIZE_TYPE__ Xsize_t; |
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27 | #endif |
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28 | #ifdef va_list |
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29 | typedef va_list XXXva_list; |
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30 | #endif |
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31 | !EOF! |
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32 | |
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33 | if ${CPP} st-dummy.c >TMP ; then true |
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34 | else |
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35 | echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1 |
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36 | fi |
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37 | tr ' ' ' ' <TMP >st-dummy.out |
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38 | |
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39 | for TYPE in dev_t clock_t fpos_t gid_t ino_t mode_t nlink_t off_t pid_t size_t ssize_t time_t uid_t va_list int32_t uint_32_t ; do |
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40 | IMPORTED=`eval 'echo $'"$TYPE"` |
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41 | if [ -n "${IMPORTED}" ] ; then |
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42 | eval "$TYPE='$IMPORTED" |
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43 | else |
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44 | # Search st-dummy.out for a typedef for $TYPE, and write it out |
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45 | # to TMP in #define syntax. |
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46 | rm -f TMP |
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47 | ${SED} -n -e "s|.*typedef *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null |
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48 | # Now select the first definition. |
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49 | if [ -s TMP ]; then |
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50 | # VALUE is now the typedef'd definition of $TYPE. |
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51 | eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'" |
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52 | # Unless VALUE contains a blank, look for a typedef for it |
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53 | # in turn (this could be a loop, but that would be over-kill). |
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54 | if echo $VALUE | grep " " >/dev/null ; then true |
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55 | else |
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56 | rm -f TMP |
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57 | ${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <st-dummy.out>/dev/null |
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58 | if [ -s TMP ]; then |
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59 | eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'" |
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60 | fi |
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61 | fi |
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62 | eval "$TYPE='$VALUE'" |
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63 | fi |
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64 | fi |
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65 | done |
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66 | |
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67 | cat <<!EOF! |
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68 | #define ${macro_prefix}clock_t ${clock_t-int /* default */} |
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69 | #define ${macro_prefix}dev_t ${dev_t-int /* default */} |
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70 | #define ${macro_prefix}fpos_t ${fpos_t-long /* default */} |
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71 | #define ${macro_prefix}gid_t ${gid_t-int /* default */} |
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72 | #define ${macro_prefix}ino_t ${ino_t-int /* default */} |
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73 | #define ${macro_prefix}mode_t ${mode_t-int /* default */} |
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74 | #define ${macro_prefix}nlink_t ${nlink_t-int /* default */} |
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75 | #define ${macro_prefix}off_t ${off_t-long /* default */} |
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76 | #define ${macro_prefix}pid_t ${pid_t-int /* default */} |
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77 | #define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__ |
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78 | #define ${macro_prefix}size_t __SIZE_TYPE__ |
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79 | #define ${macro_prefix}time_t ${time_t-int /* default */} |
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80 | #define ${macro_prefix}uid_t ${uid_t-int /* default */} |
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81 | #define ${macro_prefix}wchar_t __WCHAR_TYPE__ |
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82 | #define ${macro_prefix}int32_t ${int32_t-int /* default */} |
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83 | #define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */} |
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84 | !EOF! |
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85 | |
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86 | # (wait_arg_t*) should be (int*), according to Posix, but |
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87 | # BSD traditionally used (union wait*). Use (void*) to allow either usage. |
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88 | echo "#define ${macro_prefix}wait_arg_t void" |
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89 | |
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90 | # ssize_t is the signed version of size_t |
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91 | if [ -n "${ssize_t}" ] ; then |
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92 | echo "#define ${macro_prefix}ssize_t ${ssize_t}" |
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93 | elif [ -z "${size_t}" ] ; then |
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94 | echo "#define ${macro_prefix}ssize_t long" |
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95 | else |
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96 | # Remove "unsigned" from ${size_t} to get ${ssize_t}. |
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97 | tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`" |
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98 | if [ -z "$tmp" ] ; then |
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99 | tmp=int |
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100 | else |
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101 | # check $tmp doesn't conflict with <unistd.h> |
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102 | echo "#include <unistd.h> |
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103 | extern $tmp read();" >st-dummy.c |
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104 | ${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int |
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105 | fi |
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106 | echo "#define ${macro_prefix}ssize_t $tmp /* default */" |
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107 | fi |
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108 | |
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109 | # va_list can cause problems (e.g. some systems have va_list as a struct). |
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110 | # Check to see if ${va_list-char*} really is compatible with stdarg.h. |
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111 | cat >st-dummy.c <<!EOF! |
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112 | #define X_va_list ${va_list-char* /* default */} |
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113 | extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */ |
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114 | #include <stdarg.h> |
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115 | long foo(X_va_list ap) { return va_arg(ap, long); } |
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116 | long bar(int i, ...) |
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117 | { va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; } |
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118 | !EOF! |
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119 | if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then |
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120 | # Ok: We have something that works. |
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121 | echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}" |
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122 | else |
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123 | # No, it breaks. Indicate that <stdarg.h> must be included. |
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124 | echo "#define ${macro_prefix}NEED_STDARG_H |
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125 | #define ${macro_prefix}va_list va_list" |
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126 | fi |
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127 | |
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128 | # stuff needed for curses.h |
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129 | |
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130 | # This isn't correct for SVR4 (for example). However, we only |
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131 | # use this when adding a missing prototype, so it shouldn't matter. |
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132 | echo "#define chtype int" |
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133 | # sys-protos.h uses non-standard names (due to the CHTYPE argument problem). |
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134 | echo "#define box32 box" |
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135 | echo "#define initscr32 initscr" |
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136 | echo "#define w32addch waddch" |
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137 | echo "#define w32insch winsch" |
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138 | |
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139 | rm -f st-dummy.c st-dummy.o TMP st-dummy.out |
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