1#! /bin/sh 2# Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t). 3# Emits macros definitions for these, and some other types. 4# Intended to be used to massage the sys-protos.h file. 5# Expects one arg, which is the GCC source directory. 6 7CC=${CC-"./xgcc -B$1/"} 8CPP=${CPP-`echo ${CC} -E -I"$1/"`} 9SED=sed 10 11# Generate definitions for the standard types (such as mode_t) 12# compatible with those in the standard C header files. 13# It works by a dummy program through the C pre-processor, and then 14# using sed to search for typedefs in the output. 15 16cat >st-dummy.c <<!EOF! 17#include <sys/types.h> 18#include <stddef.h> 19#include <stdarg.h> 20#include <stdio.h> 21#include <time.h> 22#include <signal.h> 23#ifdef size_t 24typedef size_t Xsize_t; 25#elif defined(__SIZE_TYPE__) 26typedef __SIZE_TYPE__ Xsize_t; 27#endif 28#ifdef va_list 29typedef va_list XXXva_list; 30#endif 31!EOF! 32 33if ${CPP} st-dummy.c >TMP ; then true 34else 35 echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1 36fi 37tr ' ' ' ' <TMP >st-dummy.out 38 39for 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 40 IMPORTED=`eval 'echo $'"$TYPE"` 41 if [ -n "${IMPORTED}" ] ; then 42 eval "$TYPE='$IMPORTED" 43 else 44 # Search st-dummy.out for a typedef for $TYPE, and write it out 45 # to TMP in #define syntax. 46 rm -f TMP 47 ${SED} -n -e "s|.*typedef *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null 48 # Now select the first definition. 49 if [ -s TMP ]; then 50 # VALUE is now the typedef'd definition of $TYPE. 51 eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'" 52 # Unless VALUE contains a blank, look for a typedef for it 53 # in turn (this could be a loop, but that would be over-kill). 54 # Ensure $VALUE is double quoted to protect cases where it 55 # contains an asterisk and would cause filename expansion. 56 # E.g. when va_list is "char *". 57 if echo "$VALUE" | grep " " >/dev/null ; then true 58 else 59 rm -f TMP 60 ${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <st-dummy.out>/dev/null 61 if [ -s TMP ]; then 62 eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'" 63 fi 64 fi 65 eval "$TYPE='$VALUE'" 66 fi 67 fi 68done 69 70cat <<!EOF! 71#define ${macro_prefix}clock_t ${clock_t-int /* default */} 72#define ${macro_prefix}dev_t ${dev_t-int /* default */} 73#define ${macro_prefix}fpos_t ${fpos_t-long /* default */} 74#define ${macro_prefix}gid_t ${gid_t-int /* default */} 75#define ${macro_prefix}ino_t ${ino_t-int /* default */} 76#define ${macro_prefix}mode_t ${mode_t-int /* default */} 77#define ${macro_prefix}nlink_t ${nlink_t-int /* default */} 78#define ${macro_prefix}off_t ${off_t-long /* default */} 79#define ${macro_prefix}pid_t ${pid_t-int /* default */} 80#define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__ 81#define ${macro_prefix}size_t __SIZE_TYPE__ 82#define ${macro_prefix}time_t ${time_t-int /* default */} 83#define ${macro_prefix}uid_t ${uid_t-int /* default */} 84#define ${macro_prefix}wchar_t __WCHAR_TYPE__ 85#define ${macro_prefix}int32_t ${int32_t-int /* default */} 86#define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */} 87!EOF! 88 89# (wait_arg_t*) should be (int*), according to Posix, but 90# BSD traditionally used (union wait*). Use (void*) to allow either usage. 91echo "#define ${macro_prefix}wait_arg_t void" 92 93# ssize_t is the signed version of size_t 94if [ -n "${ssize_t}" ] ; then 95 echo "#define ${macro_prefix}ssize_t ${ssize_t}" 96elif [ -z "${size_t}" ] ; then 97 echo "#define ${macro_prefix}ssize_t long" 98else 99 # Remove "unsigned" from ${size_t} to get ${ssize_t}. 100 tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`" 101 if [ -z "$tmp" ] ; then 102 tmp=int 103 else 104 # check $tmp doesn't conflict with <unistd.h> 105 echo "#include <unistd.h> 106 extern $tmp read();" >st-dummy.c 107 ${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int 108 fi 109 echo "#define ${macro_prefix}ssize_t $tmp /* default */" 110fi 111 112# va_list can cause problems (e.g. some systems have va_list as a struct). 113# Check to see if ${va_list-char*} really is compatible with stdarg.h. 114cat >st-dummy.c <<!EOF! 115#define X_va_list ${va_list-char* /* default */} 116extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */ 117#include <stdarg.h> 118long foo(X_va_list ap) { return va_arg(ap, long); } 119long bar(int i, ...) 120{ va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; } 121!EOF! 122if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then 123 # Ok: We have something that works. 124 echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}" 125else 126 # No, it breaks. Indicate that <stdarg.h> must be included. 127 echo "#define ${macro_prefix}NEED_STDARG_H 128#define ${macro_prefix}va_list va_list" 129fi 130 131# stuff needed for curses.h 132 133# This isn't correct for SVR4 (for example). However, we only 134# use this when adding a missing prototype, so it shouldn't matter. 135echo "#define chtype int" 136# sys-protos.h uses non-standard names (due to the CHTYPE argument problem). 137echo "#define box32 box" 138echo "#define initscr32 initscr" 139echo "#define w32addch waddch" 140echo "#define w32insch winsch" 141 142rm -f st-dummy.c st-dummy.o TMP st-dummy.out 143