d4691e641b
non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
140 lines
4.9 KiB
Bash
Executable File
140 lines
4.9 KiB
Bash
Executable File
#! /bin/sh
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# Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t).
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# Emits macros definitions for these, and some other types.
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# Intended to be used to massage the sys-protos.h file.
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# Expects one arg, which is the GCC source directory.
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CC=${CC-"./xgcc -B$1/"}
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CPP=${CPP-`echo ${CC} -E -I"$1/"`}
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SED=sed
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# Generate definitions for the standard types (such as mode_t)
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# compatible with those in the standard C header files.
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# It works by a dummy program through the C pre-processor, and then
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# using sed to search for typedefs in the output.
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cat >st-dummy.c <<!EOF!
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#include <sys/types.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <time.h>
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#include <signal.h>
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#ifdef size_t
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typedef size_t Xsize_t;
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#elif defined(__SIZE_TYPE__)
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typedef __SIZE_TYPE__ Xsize_t;
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#endif
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#ifdef va_list
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typedef va_list XXXva_list;
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#endif
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!EOF!
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if ${CPP} st-dummy.c >TMP ; then true
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else
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echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1
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fi
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tr ' ' ' ' <TMP >st-dummy.out
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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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IMPORTED=`eval 'echo $'"$TYPE"`
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if [ -n "${IMPORTED}" ] ; then
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eval "$TYPE='$IMPORTED"
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else
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# Search st-dummy.out for a typedef for $TYPE, and write it out
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# to TMP in #define syntax.
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rm -f TMP
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${SED} -n -e "s|.*typedef *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null
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# Now select the first definition.
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if [ -s TMP ]; then
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# VALUE is now the typedef'd definition of $TYPE.
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eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'"
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# Unless VALUE contains a blank, look for a typedef for it
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# in turn (this could be a loop, but that would be over-kill).
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if echo $VALUE | grep " " >/dev/null ; then true
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else
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rm -f TMP
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${SED} -n -e "s|.*typedef[ ][ ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[ ]*;.*|\1|w TMP" <st-dummy.out>/dev/null
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if [ -s TMP ]; then
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eval "VALUE='`${SED} -e '2,$d' -e 's|[ ]*$||' <TMP`'"
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fi
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fi
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eval "$TYPE='$VALUE'"
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fi
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fi
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done
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cat <<!EOF!
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#define ${macro_prefix}clock_t ${clock_t-int /* default */}
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#define ${macro_prefix}dev_t ${dev_t-int /* default */}
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#define ${macro_prefix}fpos_t ${fpos_t-long /* default */}
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#define ${macro_prefix}gid_t ${gid_t-int /* default */}
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#define ${macro_prefix}ino_t ${ino_t-int /* default */}
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#define ${macro_prefix}mode_t ${mode_t-int /* default */}
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#define ${macro_prefix}nlink_t ${nlink_t-int /* default */}
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#define ${macro_prefix}off_t ${off_t-long /* default */}
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#define ${macro_prefix}pid_t ${pid_t-int /* default */}
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#define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__
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#define ${macro_prefix}size_t __SIZE_TYPE__
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#define ${macro_prefix}time_t ${time_t-int /* default */}
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#define ${macro_prefix}uid_t ${uid_t-int /* default */}
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#define ${macro_prefix}wchar_t __WCHAR_TYPE__
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#define ${macro_prefix}int32_t ${int32_t-int /* default */}
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#define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */}
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!EOF!
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# (wait_arg_t*) should be (int*), according to Posix, but
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# BSD traditionally used (union wait*). Use (void*) to allow either usage.
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echo "#define ${macro_prefix}wait_arg_t void"
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# ssize_t is the signed version of size_t
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if [ -n "${ssize_t}" ] ; then
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echo "#define ${macro_prefix}ssize_t ${ssize_t}"
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elif [ -z "${size_t}" ] ; then
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echo "#define ${macro_prefix}ssize_t long"
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else
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# Remove "unsigned" from ${size_t} to get ${ssize_t}.
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tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's| | |g'`"
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if [ -z "$tmp" ] ; then
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tmp=int
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else
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# check $tmp doesn't conflict with <unistd.h>
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echo "#include <unistd.h>
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extern $tmp read();" >st-dummy.c
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${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int
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fi
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echo "#define ${macro_prefix}ssize_t $tmp /* default */"
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fi
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# va_list can cause problems (e.g. some systems have va_list as a struct).
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# Check to see if ${va_list-char*} really is compatible with stdarg.h.
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cat >st-dummy.c <<!EOF!
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#define X_va_list ${va_list-char* /* default */}
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extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */
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#include <stdarg.h>
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long foo(X_va_list ap) { return va_arg(ap, long); }
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long bar(int i, ...)
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{ va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; }
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!EOF!
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if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then
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# Ok: We have something that works.
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echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}"
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else
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# No, it breaks. Indicate that <stdarg.h> must be included.
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echo "#define ${macro_prefix}NEED_STDARG_H
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#define ${macro_prefix}va_list va_list"
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fi
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# stuff needed for curses.h
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# This isn't correct for SVR4 (for example). However, we only
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# use this when adding a missing prototype, so it shouldn't matter.
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echo "#define chtype int"
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# sys-protos.h uses non-standard names (due to the CHTYPE argument problem).
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echo "#define box32 box"
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echo "#define initscr32 initscr"
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echo "#define w32addch waddch"
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echo "#define w32insch winsch"
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rm -f st-dummy.c st-dummy.o TMP st-dummy.out
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