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- #! /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 >dummy.c <<!EOF!
- #include <sys/types.h>
- #include "gstddef.h"
- #include "gstdarg.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 ptrdiff_t
- typedef ptrdiff_t Xptrdiff_t;
- #elif defined(__PTRDIFF_TYPE__)
- typedef __PTRDIFF_TYPE__ Xptrdiff_t;
- #endif
- #ifdef wchar_t
- typedef wchar_t Xwchar_t;
- #elif defined(__WCHAR_TYPE__)
- typedef __WCHAR_TYPE__ Xwchar_t;
- #endif
- #ifdef va_list
- typedef va_list XXXva_list;
- #endif
- !EOF!
-
- if ${CPP} dummy.c >TMP ; then true
- else
- echo "gen-params: could not invoke ${CPP} on dummy.c" 1>&2 ; exit 1
- fi
- tr ' ' ' ' <TMP >dummy.out
-
- for TYPE in dev_t clock_t fpos_t gid_t ino_t mode_t nlink_t off_t pid_t ptrdiff_t size_t ssize_t time_t uid_t va_list wchar_t int32_t uint_32_t ; do
- IMPORTED=`eval 'echo $'"$TYPE"`
- if [ -n "${IMPORTED}" ] ; then
- eval "$TYPE='$IMPORTED"
- else
- # Search 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" <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).
- if echo $VALUE | grep " " >/dev/null ; then true
- else
- rm -f TMP
- ${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <dummy.out>/dev/null
- if [ -s TMP ]; then
- eval "VALUE='`${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_t-long int /* default */}
- #define ${macro_prefix}size_t ${size_t-unsigned long /* default */}
- #define ${macro_prefix}time_t ${time_t-int /* default */}
- #define ${macro_prefix}uid_t ${uid_t-int /* default */}
- #define ${macro_prefix}wchar_t ${wchar_t-int /* default */}
- #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();" >dummy.c
- ${CC} -c 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 >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 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 dummy.c dummy.o TMP dummy.out
-