| #! /bin/sh |
| # Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t). |
| # Emits macros definitions for these, and some other types. |
| # Intended to be used to massage the sys-protos.h file. |
| # Expects one arg, which is the GCC source directory. |
| |
| CC=${CC-"./xgcc -B$1/"} |
| CPP=${CPP-`echo ${CC} -E -I"$1/"`} |
| SED=sed |
| |
| # Generate definitions for the standard types (such as mode_t) |
| # compatible with those in the standard C header files. |
| # It works by a dummy program through the C pre-processor, and then |
| # using sed to search for typedefs in the output. |
| |
| cat >st-dummy.c <<!EOF! |
| #include <sys/types.h> |
| #include <stddef.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <signal.h> |
| #ifdef size_t |
| typedef size_t Xsize_t; |
| #elif defined(__SIZE_TYPE__) |
| typedef __SIZE_TYPE__ Xsize_t; |
| #endif |
| #ifdef va_list |
| typedef va_list XXXva_list; |
| #endif |
| !EOF! |
| |
| if ${CPP} st-dummy.c >TMP ; then true |
| else |
| echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1 |
| fi |
| tr ' ' ' ' <TMP >st-dummy.out |
| |
| 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 |
| IMPORTED=`eval 'echo $'"$TYPE"` |
| if [ -n "${IMPORTED}" ] ; then |
| eval "$TYPE='$IMPORTED" |
| else |
| # Search st-dummy.out for a typedef for $TYPE, and write it out |
| # to TMP in #define syntax. |
| rm -f TMP |
| ${SED} -n -e "s|.*typedef *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null |
| # Now select the first definition. |
| if [ -s TMP ]; then |
| # VALUE is now the typedef'd definition of $TYPE. |
| eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'" |
| # Unless VALUE contains a blank, look for a typedef for it |
| # in turn (this could be a loop, but that would be over-kill). |
| # Ensure $VALUE is double quoted to protect cases where it |
| # contains an asterisk and would cause filename expansion. |
| # E.g. when va_list is "char *". |
| if echo "$VALUE" | grep " " >/dev/null ; then true |
| else |
| rm -f TMP |
| ${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <st-dummy.out>/dev/null |
| if [ -s TMP ]; then |
| eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'" |
| fi |
| fi |
| eval "$TYPE='$VALUE'" |
| fi |
| fi |
| done |
| |
| cat <<!EOF! |
| #define ${macro_prefix}clock_t ${clock_t-int /* default */} |
| #define ${macro_prefix}dev_t ${dev_t-int /* default */} |
| #define ${macro_prefix}fpos_t ${fpos_t-long /* default */} |
| #define ${macro_prefix}gid_t ${gid_t-int /* default */} |
| #define ${macro_prefix}ino_t ${ino_t-int /* default */} |
| #define ${macro_prefix}mode_t ${mode_t-int /* default */} |
| #define ${macro_prefix}nlink_t ${nlink_t-int /* default */} |
| #define ${macro_prefix}off_t ${off_t-long /* default */} |
| #define ${macro_prefix}pid_t ${pid_t-int /* default */} |
| #define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__ |
| #define ${macro_prefix}size_t __SIZE_TYPE__ |
| #define ${macro_prefix}time_t ${time_t-int /* default */} |
| #define ${macro_prefix}uid_t ${uid_t-int /* default */} |
| #define ${macro_prefix}wchar_t __WCHAR_TYPE__ |
| #define ${macro_prefix}int32_t ${int32_t-int /* default */} |
| #define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */} |
| !EOF! |
| |
| # (wait_arg_t*) should be (int*), according to Posix, but |
| # BSD traditionally used (union wait*). Use (void*) to allow either usage. |
| echo "#define ${macro_prefix}wait_arg_t void" |
| |
| # ssize_t is the signed version of size_t |
| if [ -n "${ssize_t}" ] ; then |
| echo "#define ${macro_prefix}ssize_t ${ssize_t}" |
| elif [ -z "${size_t}" ] ; then |
| echo "#define ${macro_prefix}ssize_t long" |
| else |
| # Remove "unsigned" from ${size_t} to get ${ssize_t}. |
| tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`" |
| if [ -z "$tmp" ] ; then |
| tmp=int |
| else |
| # check $tmp doesn't conflict with <unistd.h> |
| echo "#include <unistd.h> |
| extern $tmp read();" >st-dummy.c |
| ${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int |
| fi |
| echo "#define ${macro_prefix}ssize_t $tmp /* default */" |
| fi |
| |
| # va_list can cause problems (e.g. some systems have va_list as a struct). |
| # Check to see if ${va_list-char*} really is compatible with stdarg.h. |
| cat >st-dummy.c <<!EOF! |
| #define X_va_list ${va_list-char* /* default */} |
| extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */ |
| #include <stdarg.h> |
| long foo(X_va_list ap) { return va_arg(ap, long); } |
| long bar(int i, ...) |
| { va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; } |
| !EOF! |
| if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then |
| # Ok: We have something that works. |
| echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}" |
| else |
| # No, it breaks. Indicate that <stdarg.h> must be included. |
| echo "#define ${macro_prefix}NEED_STDARG_H |
| #define ${macro_prefix}va_list va_list" |
| fi |
| |
| # stuff needed for curses.h |
| |
| # This isn't correct for SVR4 (for example). However, we only |
| # use this when adding a missing prototype, so it shouldn't matter. |
| echo "#define chtype int" |
| # sys-protos.h uses non-standard names (due to the CHTYPE argument problem). |
| echo "#define box32 box" |
| echo "#define initscr32 initscr" |
| echo "#define w32addch waddch" |
| echo "#define w32insch winsch" |
| |
| rm -f st-dummy.c st-dummy.o TMP st-dummy.out |