+++ /dev/null
-#! /bin/sh
-# Output RCS compile-time configuration.
-Id='$Id: conf.sh,v 1.2 2002/06/17 16:49:10 naz Exp $'
-# Copyright 1990, 1991, 1992, 1993, 1994, 1995 Paul Eggert
-# Distributed under license by the Free Software Foundation, Inc.
-
-# This file is part of RCS.
-#
-# RCS is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# RCS is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with RCS; see the file COPYING.
-# If not, write to the Free Software Foundation,
-# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#
-# Report problems and direct all questions to:
-#
-# rcs-bugs@cs.purdue.edu
-
-
-# Standard output should already be directed to "a.h";
-# later parts of this procedure need it.
-# Standard error can be ignored if a.h is OK,
-# and can be inspected for clues otherwise.
-
-# The Makefile overrides the following defaults.
-: ${RCSPREFIX=/usr/local/bin/}
-: ${ALL_CFLAGS=-Dhas_conf_h}
-: ${CC=cc}
-: ${COMPAT2=0}
-: ${DIFF=${RCSPREFIX}diff}
-: ${DIFF3=${DIFF}3}
-: ${DIFF3_BIN=1}
-: ${DIFFFLAGS=-an}
-: ${DIFF_L=1}
-: ${DIFF_SUCCESS=0} ${DIFF_FAILURE=1} ${DIFF_TROUBLE=2}
-: ${ED=/bin/ed}
-: ${SENDMAIL='"/usr/lib/sendmail"'}
-# : ${LDFLAGS=} ${LIBS=} tickles old shell bug
-
-C="$CC $ALL_CFLAGS"
-CL="$CC $ALL_CFLAGS $LDFLAGS -o a.out"
-L=$LIBS
-
-cat <<EOF
-/* RCS compile-time configuration */
-
- /* $Id */
-
-/*
- * This file is generated automatically.
- * If you edit it by hand your changes may be lost.
- * Instead, please try to fix conf.sh,
- * and send your fixes to rcs-bugs@cs.purdue.edu.
- */
-
-EOF
-
-n='
-'
-case `echo -n` in
--n)
- ech='echo' dots='... \c';;
-*)
- ech='echo -n' dots='... '
-esac
-
-$ech >&3 "$0: testing permissions $dots"
-rm -f a.d &&
-date >a.d &&
-chmod 0 a.d &&
-{ test -w a.d || cp /dev/null a.d 2>/dev/null; } && {
- echo >&3 "$n$0: This command should not be run with superuser permissions."
-# exit 1
-}
-echo >&3 OK
-rm -f a.d || exit
-
-$ech >&3 "$0: testing compiler for plausibility $dots"
-echo 'main() { return 0; }' >a.c
-rm -f a.exe a.out || exit
-$CL a.c $L >&2 || {
- echo >&3 "$n$0: The command '$CL a.c $L' failed on a trivial program."
- exit 1
-}
-echo 'this is not a C source file' >a.c
-rm -f a.exe a.out || exit
-$CL a.c $L >&2 && {
- echo >&3 "$n$0: The command '$CL a.c $L' succeeds when it should fail."
- exit 1
-}
-echo >&3 OK
-
-$ech >&3 "$0: configuring exitmain $dots"
-cat >a.c <<EOF
-#include "a.h"
-int main(argc,argv) int argc; char **argv; { return argc-1; }
-EOF
-rm -f a.exe a.out || exit
-if $CL a.c $L >&2
-then A_H=a.h
-else
- echo >&3 failed
- $ech >&3 "$0: attempting to work around Domain/OS brain damage $dots"
- cat >a.c <<EOF
-#include "a.hap"
-int main(argc,argv) int argc; char **argv; { return argc-1; }
-EOF
- cat <a.h >a.hap &&
- $CL a.c $L >&2 || exit 1
- # The Domain/OS C compiler refuses to read a.h because the file
- # is currently open for writing. Work around this brain damage by
- # copying it to a.hap before each compilation; include a.hap instead.
- A_H=a.hap
-fi
-if test -f a.out
-then aout=./a.out
-elif test -f a.exe
-then aout=./a.exe
-else
- echo >&3 "$n$0: C compiler creates neither a.out nor a.exe."
- exit 1
-fi
-e='exit(n), 3 /* lint fodder */'
-if $aout -
-then :
-elif $aout
-then e=n
-fi
-case $e in
-n) echo >&3 OK;;
-*) echo >&3 "return does not work; using exit instead"
-esac
-echo "#define exitmain(n) return $e /* how to exit from main() */"
-
-: PREPARE_CC
-case $A_H in
-a.h)
- PREPARE_CC="rm -f $aout";;
-*)
- echo "rm -f $aout \$1 && cat <a.h >$A_H" >a.pre
- PREPARE_CC="sh a.pre"
-esac
-
-for id in _POSIX_C_SOURCE _POSIX_SOURCE
-do
- $ech >&3 "$0: configuring $id $dots"
- cat >a.c <<EOF
-#include "$A_H"
-#include <stdio.h>
-int
-main() {
-# ifdef fileno
-# define f(x) fileno(x)
-# else
- /* Force a compile-time error if fileno isn't declared. */
- int (*p)() = fileno;
-# define f(x) (*p)(x)
-# endif
- /* Some buggy linkers seem to need the getchar. */
- exitmain(getchar() != '#' || fileno(stdout) != 1);
-}
-#if syntax_error
-syntax error
-#endif
-EOF
- a='/* ' z='*/ '
- case $id in
- _POSIX_SOURCE)
- version=1003.1-1990
- value=;;
- _POSIX_C_SOURCE)
- version='1003.1b-1993 or later'
- value='2147483647L ';;
- esac
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout <a.c) >&2
- then :
- elif $PREPARE_CC || exit; ($CL -D$id=$value a.c $L && $aout <a.c) >&2
- then a= z=
- fi
- case $a in
- ?*) echo >&3 OK;;
- '') echo >&3 "must define it, unfortunately"
- esac
- echo "$a#define $id $value$z/* if strict C + Posix $version */"
-done
-
-cat <<'EOF'
-
-#include <errno.h>
-#include <stdio.h>
-#include <time.h>
-
-/* Comment out #include lines below that do not work. */
-EOF
-
-$ech >&3 "$0: configuring how to check for syntax errors $dots"
-# Run `$CS a.c $LS' instead of `$CL a.c $L' for compile-time checking only.
-# This speeds up the configuration process.
-if
- rm -f a.s && $C -S a.c >&2 && test -s a.s && rm -f a.s &&
- if $C -S -Dsyntax_error=1 a.c >&2 && test -s a.s
- then false
- else :
- fi
-then
- # Generate assembly language output.
- CS="$C -S" LS= o=a.s PREPARE_CC="$PREPARE_CC $o"
-elif
- rm -f a.o a.obj && $C -c a.c >&2 &&
- if test -s a.o
- then o=a.o
- elif test -s a.obj
- then o=a.obj
- else false
- fi &&
- if $C -c -Dsyntax_error=1 a.c >&2 && test -s $o
- then false
- else :
- fi
-then
- # Generate object code.
- CS="$C -c" LS= PREPARE_CC="$PREPARE_CC $o"
-else
- # Generate an executable.
- CS=$CL LS=$L o=$aout
-fi
-CS_OK="test -s $o"
-echo >&3 $CS
-
-# standard include files
-# sys/types.h and sys/stat.h must come first because others depend on them.
-has_signal=1
-for h in \
- sys/types sys/stat \
- dirent fcntl limits mach/mach net/errno \
- pwd siginfo signal stdlib string \
- sys/mman sys/wait ucontext unistd utime vfork
-do
- i="#include <$h.h>"
- $ech >&3 "$0: configuring $i $dots"
- cat >a.c <<EOF
-#include "$A_H"
-$i
-int main(){ exitmain(0); }
-EOF
- ok=OK
- $PREPARE_CC || exit
- $CS a.c $LS >&2 && $CS_OK || {
- case $h in
- string)
- i='#include <strings.h>'
- ok="$i instead";;
- *)
- i="/* $i */"
- ok="commenting it out"
- esac
- case $h in
- signal) has_signal=0
- esac
- }
- echo >&3 "$ok"
- echo "$i"
-done
-
-cat <<'EOF'
-
-/* Define boolean symbols to be 0 (false, the default), or 1 (true). */
-EOF
-
-# has_sys_param_h
-$ech >&3 "$0: configuring has_sys_param_h $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#include <sys/param.h>
-int main() { exitmain(0); }
-EOF
-$PREPARE_CC || exit
-if $CS a.c $LS >&2 && $CS_OK
-then h=1 ok=OK
-else h=0 ok=absent
-fi
-echo >&3 $ok
-echo "#define has_sys_param_h $h /* Does #include <sys/param.h> work? */"
-
-# We must do errno next, because has_readlink needs it.
-/* <errno.h> */
-$ech >&3 "$0: configuring errno $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(errno != errno); }
-EOF
-$PREPARE_CC || exit
-if $CS a.c $LS >&2
-then a='/* ' z=' */' ok=OK
-else a= z= ok='declaration missing'
-fi
-echo >&3 $ok
-echo "${a}extern int errno;$z /* Uncomment if <errno.h> doesn't declare errno. */"
-rm -f a.c || exit
-
-# We must do has_readlink next, because it might generate
-# #include directives that affect later definitions.
-
-$ech >&3 "$0: configuring has_readlink, readlink_isreg_errno $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static char b[7];
-int
-main() {
- if (readlink("a.sym2",b,7) == 6 && strcmp(b,"a.sym1") == 0 &&
- readlink("a.c",b,7) == -1 && errno != ENOENT
- ) {
- if (errno == EINVAL)
- printf("EINVAL\n");
- else
- printf("%d\n", errno);
- exitmain(ferror(stdout) || fclose(stdout)!=0);
- }
- exitmain(1);
-}
-EOF
-$PREPARE_CC a.sym* || exit
-readlink_isreg_errno='?'
-if (ln -s a.sym1 a.sym2 && $CL a.c $L) >&2 && readlink_isreg_errno=`$aout`
-then h=1
-else h=0
-fi
-echo >&3 $h, $readlink_isreg_errno
-cat <<EOF
-#define has_readlink $h /* Does readlink() work? */
-#define readlink_isreg_errno $readlink_isreg_errno /* errno after readlink on regular file */
-
-#if has_readlink && !defined(MAXSYMLINKS)
-# if has_sys_param_h
-# include <sys/param.h>
-# endif
-# ifndef MAXSYMLINKS
-# define MAXSYMLINKS 20 /* BSD; not standard yet */
-# endif
-#endif
-EOF
-
-# *_t
-cat <<'EOF'
-
-/* Comment out the typedefs below if the types are already declared. */
-/* Fix any uncommented typedefs that are wrong. */
-EOF
-cat >a.c <<EOF
-#include "$A_H"
-t x;
-int main() { exitmain(0); }
-EOF
-for t in mode_t off_t pid_t sig_atomic_t size_t ssize_t time_t uid_t
-do
- $ech >&3 "$0: configuring $t $dots"
- case $t in
- size_t) i=unsigned;;
- off_t|time_t) i=long;;
- *) i=int;;
- esac
- $PREPARE_CC || exit
- if $CS -Dt=$t a.c $LS >&2 && $CS_OK
- then ok=OK a='/* ' z=' */'
- else ok=$i a= z=
- fi
- echo >&3 $ok
- echo "${a}typedef $i $t;$z"
-done
-
-cat <<'EOF'
-
-/* Comment out the keyword definitions below if the keywords work. */
-EOF
-
-for i in const volatile
-do
- $ech >&3 "$0: configuring $i $dots"
- cat >a.c <<EOF
-# include "$A_H"
- int main();
- enum Boolean { false, true };
- int hpux8_05barf();
- static enum Boolean $i zero;
- int hpux8_05barf(x) int x; { return x; }
- static enum Boolean $i * $i azero = &zero;
- static enum Boolean $i * $i * $i aazero = &azero;
- static enum Boolean * $i arzero[1];
- static sig_atomic_t $i sigzero;
- int sco3_2v4barf() {
- /* SCO 3.2v4 native compiler barfs on this. */
- char *t;
- char $i *s = 0 ? (char *)0 : (char $i *)0;
- *t++ = '\0';
- }
- int main() {
- enum Boolean *p = arzero[sigzero];
- switch (zero) {
- case false: exitmain(!p || **aazero);
- default: exitmain(hpux8_05barf(1));
- }
- }
-EOF
- a= z= ok='broken'
- $PREPARE_CC || exit
- if $CS a.c $LS >&2 && $CS_OK
- then
- cat >a.c <<EOF
- char $i *p;
- char *q;
- typedef unsigned char $i *Iptr_type;
- struct { Iptr_type lim; } s, *f = &s;
- int main() {
- Iptr_type lim;
- lim = f->lim;
- p = p == q ? p : "";
- p = p == "" ? p : q;
- return !!lim;
- }
-EOF
- $PREPARE_CC || exit
- if $CS a.c $LS >&2 && $CS_OK
- then
- case $i in
- const)
- # Check for common execv misdeclaration.
- cat >a.c <<EOF
-# include "$A_H"
- static char * const *p;
- int main() { return execv("/bin/sh", p); }
-EOF
- $PREPARE_CC || exit
- $CS a.c $LS >&2 && $CS_OK
- esac && a='/* ' z=' */' ok=OK
- fi
- fi
- echo >&3 $ok
- echo "$a#define $i$z"
-done
-
-echo >&3 "$0: configuring has_prototypes, has_stdarg, has_varargs, va_start_args $dots"
-cat >a.ha <<'EOF'
-#if has_prototypes
-# define P(params) params
-#else
-# define P(params) ()
-#endif
-#if has_stdarg
-# include <stdarg.h>
-#else
-# if has_varargs
-# include <varargs.h>
-# else
- typedef char *va_list;
-# define va_dcl int va_alist;
-# define va_start(ap) ((ap) = (va_list)&va_alist)
-# define va_arg(ap,t) (((t*) ((ap)+=sizeof(t))) [-1])
-# define va_end(ap)
-# endif
-#endif
-#if va_start_args == 2
-# define vararg_start va_start
-#else
-# define vararg_start(ap,p) va_start(ap)
-#endif
-EOF
-cat >a.c <<EOF
-#include "$A_H"
-#include "a.ha"
-
-struct buf { int x; };
-int pairnames P((int,char**,FILE*(*)P((struct buf*,struct stat*,int)),int,int)); /* a la rcsbase.h */
-FILE *(*rcsopen)P((struct buf*,struct stat*,int)); /* a la rcsfnms.c */
-
-static char *e(p,i) char **p; int i; { return p[i]; }
-#if has_prototypes
-static char *f(char *(*g)(char**,int), char **p, ...)
-#else
-static char *f(g, p, va_alist) char *(*g)(); char **p; va_dcl
-#endif
-{
- char *s;
- va_list v;
- vararg_start(v,p);
- s = g(p, va_arg(v,int));
- va_end(v);
- return s;
-}
-int main P((int, char**));
-int
-main(argc, argv) int argc; char **argv; {
- exitmain(f(e,argv,0) != argv[0] || f(e,argv,1) != argv[1]);
-}
-EOF
-for has_prototypes in 1 0
-do
- for has_stdarg in 1 v 0
- do
- case $has_stdarg in
- 1) has_varargs=-1;;
- v) has_varargs=1 has_stdarg=0;;
- *) has_varargs=0
- esac
- case $has_stdarg in
- 0) as='1 2';;
- 1) as='2 1'
- esac
- for va_start_args in $as
- do
- $PREPARE_CC || exit
- $CL \
- -Dhas_prototypes=$has_prototypes \
- -Dhas_stdarg=$has_stdarg \
- -Dhas_varargs=$has_varargs \
- -Dva_start_args=$va_start_args \
- a.c $L >&2 && $aout && break
- done && break
- done && break
-done || {
- echo >&3 $0: cannot deduce has_prototypes, has_stdarg, va_start_args
- exit 1
-}
-echo >&3 $has_prototypes, $has_stdarg, $has_varargs, $va_start_args
-case $has_varargs in
--1) a='/* ' z='*/ ' has_varargs='?';;
-*) a= z=
-esac
-cat - a.ha <<EOF
-
-/* Define boolean symbols to be 0 (false, the default), or 1 (true). */
-#define has_prototypes $has_prototypes /* Do function prototypes work? */
-#define has_stdarg $has_stdarg /* Does <stdarg.h> work? */
-$a#define has_varargs $has_varargs $z/* Does <varargs.h> work? */
-#define va_start_args $va_start_args /* How many args does va_start() take? */
-
-#if O_BINARY
- /* Text and binary i/o behave differently. */
- /* This is incompatible with Posix and Unix. */
-# define FOPEN_RB "rb"
-# define FOPEN_R_WORK (Expand==BINARY_EXPAND ? "r" : "rb")
-# define FOPEN_WB "wb"
-# define FOPEN_W_WORK (Expand==BINARY_EXPAND ? "w" : "wb")
-# define FOPEN_WPLUS_WORK (Expand==BINARY_EXPAND ? "w+" : "w+b")
-# define OPEN_O_BINARY O_BINARY
-#else
- /*
- * Text and binary i/o behave the same.
- * Omit "b", since some nonstandard hosts reject it.
- */
-# define FOPEN_RB "r"
-# define FOPEN_R_WORK "r"
-# define FOPEN_WB "w"
-# define FOPEN_W_WORK "w"
-# define FOPEN_WPLUS_WORK "w+"
-# define OPEN_O_BINARY 0
-#endif
-
-/* This may need changing on non-Unix systems (notably DOS). */
-#define OPEN_CREAT_READONLY (S_IRUSR|S_IRGRP|S_IROTH) /* lock file mode */
-#define OPEN_O_LOCK 0 /* extra open flags for creating lock file */
-#define OPEN_O_WRONLY O_WRONLY /* main open flag for creating a lock file */
-
-/* Define or comment out the following symbols as needed. */
-EOF
-
-$ech >&3 "$0: configuring bad_chmod_close $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef O_RDONLY
-# define O_RDONLY 0
-#endif
-int
-main() {
- int f;
- exitmain(
- (f = open("a.c", O_RDONLY)) < 0 ||
- chmod("a.c", 0) != 0 ||
- close(f) != 0
- );
-}
-EOF
-$PREPARE_CC || exit
-if $CL a.c $L >&2 && $aout
-then b=0 ok=OK
-else b=1 ok='will work around bug'
-fi
-echo >&3 $ok
-echo "#define bad_chmod_close $b /* Can chmod() close file descriptors? */"
-rm -f a.c || exit
-
-$ech >&3 "$0: configuring bad_creat0 $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#if defined(O_CREAT) && defined(O_WRONLY)
-# define creat0(f) open(f, O_CREAT|O_WRONLY, 0)
-#else
-# define creat0(f) creat(f, 0)
-#endif
-char buf[17000];
-int
-main() {
- int f;
- exitmain(
- (f = creat0("a.d")) < 0 ||
- write(f, buf, sizeof(buf)) != sizeof(buf) ||
- close(f) != 0
- );
-}
-EOF
-$PREPARE_CC a.d || exit
-if $CL a.c $L >&2 && $aout && test -f a.d && test ! -w a.d
-then b=0 ok=OK
-else b=1 ok='will work around bug'
-fi
-echo >&3 $ok
-echo "#define bad_creat0 $b /* Do writes fail after creat(f,0)? */"
-rm -f a.d || exit
-
-$ech >&3 "$0: configuring bad_fopen_wplus $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(!fopen("a.d","w+")); }
-EOF
-$PREPARE_CC || exit
-if echo nonempty >a.d && $CL a.c $L >&2 && $aout && test ! -s a.d
-then b=0 ok=OK
-else b=1 ok='will work around bug'
-fi
-echo >&3 $ok
-echo "#define bad_fopen_wplus $b /* Does fopen(f,\"w+\") fail to truncate f? */"
-
-echo "#define getlogin_is_secure 0 /* Is getlogin() secure? Usually it's not. */"
-
-$ech >&3 "$0: configuring has_attribute_noreturn $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static void e P((int)) __attribute__((noreturn));
-static void e(i) int i; { exit(i); }
-int main() { e(0); }
-EOF
-$PREPARE_CC || exit
-h=0 ok='does not work'
-if out=`$CS a.c $LS 2>&1`
-then
- case $out in
- *noreturn*) ;;
- *) h=1 ok=OK
- esac
-fi
-echo >&2 "$out"
-echo >&3 $ok
-cat <<EOF
-#define has_attribute_noreturn $h /* Does __attribute__((noreturn)) work? */
-#if has_attribute_noreturn
-# define exiting __attribute__((noreturn))
-#else
-# define exiting
-#endif
-EOF
-rm -f a.c || exit
-
-$ech >&3 "$0: configuring has_dirent, void_closedir $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#if void_closedir
-# define close_directory(d) (closedir(d), 0)
-#else
-# define close_directory(d) closedir(d)
-#endif
-int
-main() {
- DIR *d = opendir(".");
- struct dirent *e;
- while ((e = readdir(d)))
- if (strcmp(e->d_name, "a.c") == 0 && close_directory(d) == 0)
- exitmain(0);
- exitmain(1);
-}
-EOF
-$PREPARE_CC || exit
-has_dirent=0 ok='does not work'
-void_closedir=? a='/* ' z='*/ '
-for v in 0 1
-do
- if $CL -Dvoid_closedir=$v a.c $L >&2 && $aout
- then
- has_dirent=1 ok=OK
- void_closedir=$v a= z=
- case $v in
- 1) ok='OK, but closedir yields void'
- esac
- break
- fi
-done
-echo >&3 $ok
-echo "#define has_dirent $has_dirent /* Do opendir(), readdir(), closedir() work? */"
-echo "$a#define void_closedir $void_closedir $z/* Does closedir() yield void? */"
-
-$ech >&3 "$0: configuring has_fchmod $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef STDIN_FILENO
-#define STDIN_FILENO 0
-#endif
-int main() { exitmain(fchmod(STDIN_FILENO,0) != 0); }
-EOF
-$PREPARE_CC || exit
-if $CL a.c $L >&2 && $aout <a.c && test ! -r a.c
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_fchmod $h /* Does fchmod() work? */"
-rm -f a.c || exit
-
-$ech >&3 "$0: configuring has_fflush_input $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-#ifndef STDIN_FILENO
-#define STDIN_FILENO 0
-#endif
-int main() {
- exitmain(
- getchar() == EOF
- || fseek(stdin, 0L, SEEK_SET) != 0
- || fflush(stdin) != 0
- || lseek(STDIN_FILENO, (off_t)0, SEEK_CUR) != 0
- );
-}
-EOF
-$PREPARE_CC || exit
-if $CL a.c $L >&2 && $aout <a.c
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_fflush_input $h /* Does fflush() work on input files? */"
-rm -f a.c || exit
-
-$ech >&3 "$0: configuring has_fputs $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(fputs("Hello\"\nworld", stdout) < 0); }
-EOF
-Hello='Hello"
-world'
-$PREPARE_CC a.a || exit
-if $CL a.c $L >&2 && $aout >a.a && x=`$aout` && test " $x" = " $Hello"
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_fputs $h /* Does fputs() work? */"
-
-$ech >&3 "$0: configuring has_ftruncate $dots"
-cat >a.c <<EOF
-#include "$A_H"
-/*
- * We'd like to test ftruncate(creat(f,0), 0),
- * since that's the way RCS uses it,
- * but a common bug causes it to fail over NFS.
- * Since we must defend against this bug at run time anyway,
- * we don't bother to check for it at compile time.
- * So we test ftruncate(creat(f,0200), 0) instead.
- */
-#if defined(O_CREAT) && defined(O_WRONLY) && defined(S_IWUSR)
-# define creat0200(f) open(f, O_CREAT|O_WRONLY, S_IWUSR)
-#else
-# define creat0200(f) creat(f, 0200)
-#endif
-int
-main(argc, argv) int argc; char **argv; {
- int f = creat0200(argv[1]);
- if (f<0 || write(f,"abc",3)!=3 || ftruncate(f,(off_t)0)!=0 || close(f)!=0)
- exitmain(1);
- exitmain(0);
-}
-EOF
-$PREPARE_CC a.a || exit
-if ($CL a.c $L && $aout a.a && test -w a.a && test ! -s a.a) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_ftruncate $h /* Does ftruncate() work? */"
-
-$ech >&3 "$0: configuring has_getuid $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(getuid()!=getuid()); }
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then has_getuid=1 ok=OK
-else has_getuid=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_getuid $has_getuid /* Does getuid() work? */"
-
-case $has_getuid in
-0)
- a='/* ' z='*/ ' h=?;;
-*)
- $ech >&3 "$0: configuring has_getpwuid $dots"
- a= z=
- cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(!getpwuid(0)); }
-EOF
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then h=1 ok=OK
- else h=0 ok='does not work'
- fi
- echo >&3 $ok
-esac
-echo "$a#define has_getpwuid $h $z/* Does getpwuid() work? */"
-
-$ech >&3 "$0: configuring has_kill $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(kill(getpid(), 0) != 0); }
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then has_kill=1 ok=OK
-else has_kill=0 ok='does not work'
-fi
-echo >&3 $ok
-# Used only by this script, not by RCS, so we don't output it to stdout.
-
-$ech >&3 "$0: configuring has_memcmp $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(memcmp("beautiful","beautiful",10) != 0); }
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_memcmp $h /* Does memcmp() work? */"
-
-$ech >&3 "$0: configuring has_memcpy $dots"
-cat >a.c <<EOF
-#include "$A_H"
-char a[3];
-int
-main() {
- memcpy(a,"xy",3);
- exitmain(strcmp(a,"xy")!=0);
-}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_memcpy $h /* Does memcpy() work? */"
-
-$ech >&3 "$0: configuring has_memmove $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static char a[4];
-int
-main() {
- strcpy(a, "xy");
- memmove(a+1, a, 3);
- exitmain(strcmp(a,"xxy")!=0);
-}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_memmove $h /* Does memmove() work? */"
-
-$ech >&3 "$0: configuring has_map_fd, has_mmap, has_madvise, mmap_signal $dots"
-rm -f a.c a.d a.e || exit
-cat >a.c <<EOF
-#define CHAR1 '#' /* the first character in this file */
-#include "$A_H"
-static char *a;
-static struct stat b;
-#ifndef MADVISE_OK
-#define MADVISE_OK (madvise(a,b.st_size,MADV_SEQUENTIAL)==0 && madvise(a,b.st_size,MADV_NORMAL)==0)
-#endif
-#ifndef WTERMSIG
-#define WTERMSIG(s) ((s)&0177)
-#undef WIFSIGNALED /* Avoid 4.3BSD incompatibility with Posix. */
-#endif
-#ifndef WIFSIGNALED
-#define WIFSIGNALED(s) (((s)&0377) != 0177 && WTERMSIG(s) != 0)
-#endif
-#ifndef MAP_FAILED
-#define MAP_FAILED (-1)
-#endif
-#ifndef STDIN_FILENO
-#define STDIN_FILENO 0
-#endif
-int
-main(argc, argv) int argc; char **argv; {
- int s = 0;
-#if TRY_MAP_FD
- kern_return_t kr;
- vm_address_t va;
-#endif
-
- if (fstat(STDIN_FILENO, &b) != 0) {
- perror("fstat");
- exitmain(1);
- }
-# if TRY_MAP_FD
- kr = map_fd(STDIN_FILENO, 0, &va, TRUE, b.st_size);
- if (kr != KERN_SUCCESS) {
- mach_error("map_fd", kr);
- exitmain(1);
- }
- a = (char *) va;
-# else
- a = mmap(
- (char *)0, b.st_size, PROT_READ, MAP_SHARED,
- STDIN_FILENO, (off_t)0
- );
- if (a == (char *)MAP_FAILED) {
- perror("mmap");
- exitmain(1);
- }
- if (!MADVISE_OK) {
- perror("madvise");
- exitmain(1);
- }
-# endif
- if (*a != CHAR1)
- exitmain(1);
- if (1 < argc) {
- pid_t p, w;
- int f = creat(argv[1], 0);
- /*
- * Some buggy hosts yield ETXTBSY if you try to use creat
- * to truncate a file that is mmapped. On such hosts,
- * don't bother to try to figure out what mmap_signal is.
- */
-# ifndef ETXTBSY
-# define ETXTBSY (-1)
-# endif
- if (f<0 ? errno!=ETXTBSY : close(f)!=0) {
- perror(argv[1]);
- exitmain(1);
- }
- if ((p = fork()) < 0) {
- perror("fork");
- exitmain(1);
- }
- if (!p)
- /* Refer to nonexistent storage, causing a signal in the child. */
- _exit(a[0] != 0);
- while ((w = wait(&s)) != p)
- if (w < 0) {
- perror("wait");
- exitmain(1);
- }
- s = WIFSIGNALED(s) ? WTERMSIG(s) : 0;
- }
-# if TRY_MAP_FD
- kr = vm_deallocate(task_self(), va, (vm_size_t) b.st_size);
- if (kr != KERN_SUCCESS) {
- mach_error("vm_deallocate", kr);
- exitmain(1);
- }
-# else
- if (munmap(a, b.st_size) != 0) {
- perror("munmap");
- exitmain(1);
- }
-# endif
- if (1 < argc) {
-# ifdef SIGBUS
- if (s == SIGBUS) { printf("SIGBUS\n"); s = 0; }
-# endif
-# ifdef SIGSEGV
- if (s == SIGSEGV) { printf("SIGSEGV\n"); s = 0; }
-# endif
- if (s) printf("%d\n", s);
- }
- exitmain(ferror(stdout) || fclose(stdout)!=0);
-}
-EOF
-# AIX 3.2.0 read-only mmap updates last-modified time of file! Check for this.
-# sleep 2
-cp a.c a.d || exit
-sleep 2
-has_map_fd=? has_mmap=? has_madvise=? mmap_signal=
-case `(uname -s -r -v) 2>/dev/null` in
-'HP-UX '[A-Z].08.07*) ;;
- # mmap can crash the OS under HP-UX 8.07, so don't even test for it.
-'HP-UX '[A-Z].09.*) ;;
- # HP-UX 9.0[135]? s700 mmap has a data integrity problem
- # when a diskless cnode accesses data on the cnode's server disks.
- # We don't know of any way to test whether the bug is present.
- # HP patches PHKL_4605 and PHKL_4607 should fix the bug;
- # see <http://support.mayfield.hp.com/slx/html/ptc_hpux.html>.
- # The above code (perhaps rashly) assumes HP-UX 10 supports mmap.
-'SunOS 5.4 Generic' | 'SunOS 5.4 Generic_101945-?') ;;
- # Early editions of SunOS 5.4 are reported to have problems with mmap
- # that generate NUL bytes in RCS files with a Solaris 2.2 NFS server.
- # This has been reported to be fixed as of patch 101945-10.
-*)
- $PREPARE_CC || exit
- if ($CL -DTRY_MAP_FD=1 a.c $L && $aout <a.c) >&2
- then
- has_map_fd=1
- else
- has_map_fd=0 has_mmap=0 has_madvise=0
- if ($CL -DMADVISE_OK=1 a.c $L && $aout <a.c) >&2
- then
- case `ls -t a.c a.d` in
- a.d*)
- has_mmap=1
- rm -f a.ous
- mv $aout a.ous
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout <a.c) >&2
- then has_madvise=1; rm -f a.ous
- else rm -f $aout && mv a.ous $aout
- fi || exit
- esac
- fi
- fi
- case $has_map_fd$has_mmap in
- *1*)
- # Find out what signal is sent to RCS
- # when someone unexpectedly truncates a file
- # while RCS has it mmapped.
- rm -f a.e && cp a.c a.e &&
- mmap_signal=`$aout a.e <a.e` || exit
- esac
-esac
-echo >&3 $has_map_fd, $has_mmap, $has_madvise, $mmap_signal
-case $has_map_fd in
-'?') a='/* ' z='*/ ';;
-*) a= z=;;
-esac
-echo "$a#define has_map_fd $has_map_fd $z/* Does map_fd() work? */"
-case $has_mmap in
-'?') a='/* ' z='*/ ';;
-*) a= z=;;
-esac
-echo "$a#define has_mmap $has_mmap $z/* Does mmap() work on regular files? */"
-echo "$a#define has_madvise $has_madvise $z/* Does madvise() work? */"
-case $mmap_signal in
-?*) a= z=;;
-'') a='/* ' z='*/ ' mmap_signal='?'
-esac
-echo "$a#define mmap_signal $mmap_signal $z/* signal received if you reference nonexistent part of mmapped file */"
-
-$ech >&3 "$0: configuring has_rename, bad_a_rename, bad_b_rename $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(rename("a.a","a.b") != 0); }
-EOF
-echo a >a.a && $PREPARE_CC a.b || exit
-if ($CL a.c $L && $aout && test -f a.b) >&2
-then
- h=1
- rm -f a.a a.b &&
- echo a >a.a && chmod -w a.a || exit
- if $aout && test ! -f a.a && test -f a.b
- then a=0
- else a=1
- fi
- rm -f a.a a.b &&
- echo a >a.a && echo b >a.b && chmod -w a.b || exit
- if $aout && test ! -f a.a && test -f a.b
- then b=0
- else b=1
- fi
- rm -f a.a a.b || exit
-else h=0 a=0 b=0
-fi
-echo >&3 $h, $a, $b
-echo "#define has_rename $h /* Does rename() work? */"
-echo "#define bad_a_rename $a /* Does rename(A,B) fail if A is unwritable? */"
-echo "#define bad_b_rename $b /* Does rename(A,B) fail if B is unwritable? */"
-echo "#define bad_NFS_rename 0 /* Can rename(A,B) falsely report success? */"
-
-$ech >&3 "$0: configuring void, VOID $dots"
-cat >a.c <<EOF
-#include "$A_H"
-void f() {}
-int main() {f(); exitmain(0);}
-EOF
-$PREPARE_CC || exit
-if $CS a.c $LS >&2 && $CS_OK
-then
- v='(void) '
- echo '/* typedef int void; */ /* Some ancient compilers need this. */'
- ok=OK
-else
- v=
- echo 'typedef int void;'
- ok='your compiler is a museum piece'
-fi
-echo >&3 $ok
-echo "#define VOID $v/* 'VOID e;' discards the value of an expression 'e'. */"
-
-case $has_getuid in
-0)
- a='/* ' z='*/ ' has_seteuid=?;;
-*)
- $ech >&3 "$0: configuring has_seteuid $dots"
- a= z=
- cat >a.c <<EOF
-#include "$A_H"
-int
-main() {
-/* Guess, don't test. Ugh. Testing would require running conf.sh setuid. */
-/* If the guess is wrong, a setuid RCS will detect the problem at runtime. */
-#if !_POSIX_VERSION
- exitmain(1);
-#else
- exitmain(seteuid(geteuid()) != 0);
-#endif
-}
-EOF
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then has_seteuid=1 ok='OK, I guess'
- else has_seteuid=0 ok='does not work'
- fi
- echo >&3 $ok
-esac
-echo "$a#define has_seteuid $has_seteuid $z/* Does seteuid() work? See ../INSTALL.RCS. */"
-
-echo "#define has_setreuid 0 /* Does setreuid() work? See ../INSTALL.RCS. */"
-
-$ech >&3 "$0: configuring has_setuid $dots"
-h=$has_seteuid
-case $h in
-0)
- cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(setuid(getuid()) != 0); }
-EOF
- $PREPARE_CC || exit
- ($CL a.c $L && $aout) >&2 && h=1 ok='OK, I guess'
-esac
-echo >&3 $ok
-echo "$a#define has_setuid $h $z/* Does setuid() exist? */"
-
-$ech >&3 "$0: configuring has_sigaction $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static sig_atomic_t volatile gotsig;
-#ifdef SA_SIGINFO
- static void catchsig(i, s, v) int i; siginfo_t *s; void *v; { gotsig = 1; }
-#else
- static void catchsig(i) int i; { gotsig = 1; }
-#endif
-int
-main(argc, argv) int argc; char **argv; {
- struct sigaction s;
- if (sigaction(SIGINT, (struct sigaction*)0, &s) != 0)
- exitmain(1);
-# if has_sa_sigaction
- s.sa_sigaction = catchsig;
-# else
- s.sa_handler = catchsig;
-# endif
-# ifdef SA_SIGINFO
- s.sa_flags |= SA_SIGINFO;
-# endif
- if (sigaddset(&s.sa_mask, SIGINT) != 0)
- exitmain(1);
- if (sigaction(SIGINT, &s, (struct sigaction*)0) != 0)
- exitmain(1);
-# if has_kill
- kill(getpid(), SIGINT);
-# else
- raise(SIGINT);
-# endif
- exitmain(gotsig != 1);
-}
-EOF
-$PREPARE_CC || exit
-if ($CL -Dhas_kill=$has_kill a.c $L && $aout) >&2
-then has_sigaction=1 ok=OK
-else has_sigaction=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_sigaction $has_sigaction /* Does struct sigaction work? */"
-$ech >&3 "$0: configuring has_sa_sigaction $dots"
-has_sa_sigaction=0 ok='does not work'
-case $has_sigaction in
-1)
- $PREPARE_CC || exit
- if ($CL -Dhas_kill=$has_kill -Dhas_sa_sigaction=1 a.c $L && $aout) >&2
- then has_sa_sigaction=1 ok=OK
- fi
-esac
-echo >&3 $ok
-echo "#define has_sa_sigaction $has_sa_sigaction /* Does struct sigaction have sa_sigaction? */"
-
-$ech >&3 "$0: configuring has_signal, signal_type, sig_zaps_handler $dots"
-case $has_signal,$has_sigaction in
-1,0)
- cat >a.c <<EOF
-#include "$A_H"
-#if !defined(signal) && declare_signal
- signal_type (*signal P((int,signal_type(*)signal_args)))signal_args;
-#endif
-static signal_type nothing(i) int i; {}
-int
-main(argc, argv) int argc; char **argv; {
- signal(SIGINT, nothing);
-# if has_kill
- while (--argc)
- kill(getpid(), SIGINT);
- exitmain(0);
-# else
- /* Pretend that sig_zaps_handler; better safe than sorry. */
- exitmain(2 < argc);
-# endif
-}
-EOF
- for declare_signal in 1 0
- do
- for signal_type in void int
- do
- for signal_args in 'P((int))' '()'
- do
- $PREPARE_CC || exit
- ($CL \
- -Ddeclare_signal=$declare_signal \
- -Dhas_kill=$has_kill \
- -Dsignal_args="$signal_args" \
- -Dsignal_type=$signal_type \
- a.c $L && $aout 1) >&2 && break
- done && break
- done && break
- done || {
- echo >&3 $0: cannot deduce signal_type
- exit 1
- }
- if $aout 1 2 >&2
- then sig_zaps_handler=0
- else sig_zaps_handler=1
- fi;;
-*)
- signal_type=void
- sig_zaps_handler=0
-esac
-echo >&3 $has_signal, $signal_type, $sig_zaps_handler
-cat <<EOF
-#define has_signal $has_signal /* Does signal() work? */
-#define signal_type $signal_type /* type returned by signal handlers */
-#define sig_zaps_handler $sig_zaps_handler /* Must a signal handler reinvoke signal()? */
-EOF
-
-a='/* ' z='*/ '
-b='/* ' y='*/ '
-case $has_sigaction in
-1)
- h=?;;
-*)
- $ech >&3 "$0: configuring has_sigblock, sigmask $dots"
- ok=OK
- a= z=
- cat >a.c <<EOF
-#include "$A_H"
-#include <signal.h>
-#if define_sigmask
-# define sigmask(s) (1 << ((s)-1))
-#endif
-int
-main() {
- sigblock(sigmask(SIGHUP));
-# if has_kill
- exitmain(kill(getpid(), SIGHUP) != 0);
-# else
- exitmain(raise(SIGHUP) != 0);
-# endif
-}
-EOF
- if
- $PREPARE_CC || exit
- ($CL -Dhas_kill=$has_kill a.c $L && $aout) >&2
- then h=1
- elif
- $PREPARE_CC || exit
- ($CL -Dhas_kill=$has_kill -Ddefine_sigmask=1 a.c $L && $aout) >&2
- then h=1 b= y= ok='definition needed'
- else h=0
- fi
- echo >&3 "$h, $ok"
-esac
-echo "$a#define has_sigblock $h $z/* Does sigblock() work? */"
-echo "$b#define sigmask(s) (1 << ((s)-1)) $y/* Yield mask for signal number. */"
-
-$ech >&3 "$0: configuring fread_type, freadarg_type $dots"
-cat >a.c <<EOF
-#define CHAR1 '#' /* the first character in this file */
-#include "$A_H"
-#if !defined(fread) && declare_fread
- fread_type fread P((void*,freadarg_type,freadarg_type,FILE*));
-#endif
-int
-main() {
- char b;
- exitmain(!(
- fread(&b, (freadarg_type)1, (freadarg_type)1, stdin) == 1 &&
- b==CHAR1
- ));
-}
-EOF
-for declare_fread in 1 0
-do
- for fread_type in ssize_t size_t int unsigned
- do
- for freadarg_type in size_t ssize_t unsigned int
- do
- $PREPARE_CC || exit
- (
- $CL \
- -Ddeclare_fread=$declare_fread \
- -Dfreadarg_type=$freadarg_type \
- -Dfread_type=$fread_type \
- a.c $L &&
- $aout <a.c
- ) >&2 && break
- done && break
- done && break
-done || {
- echo >&3 $0: cannot deduce fread types
- exit 1
-}
-echo >&3 $fread_type, $freadarg_type
-cat <<EOF
-typedef $fread_type fread_type; /* type returned by fread() and fwrite() */
-typedef $freadarg_type freadarg_type; /* type of their size arguments */
-EOF
-
-$ech >&3 "$0: configuring malloc_type $dots"
-cat >a.c <<EOF
-#include "$A_H"
-typedef void *malloc_type;
-#ifndef malloc
- malloc_type malloc();
-#endif
-static malloc_type identity P((malloc_type));
-static malloc_type identity(x) malloc_type x; { return x; }
-int main() { exitmain(!identity(malloc(1))); }
-EOF
-$PREPARE_CC || exit
-if $CS a.c $LS >&2 && $CS_OK
-then t=void
-else t=char
-fi
-echo >&3 $t
-echo "typedef $t *malloc_type; /* type returned by malloc() */"
-
-$ech >&3 "$0: configuring has_getcwd $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef getcwd
- char *getcwd();
-#endif
-static char buf[10000];
-int main() { exitmain(!getcwd(buf,10000)); }
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then has_getcwd=1 ok=OK
-else has_getcwd=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_getcwd $has_getcwd /* Does getcwd() work? */"
-
-case $has_getcwd in
-1)
- a='/* ' z='*/ ' h=?;;
-*)
- a= z=
- $ech >&3 "$0: configuring has_getwd $dots"
- cat >a.c <<EOF
-#include "$A_H"
-#include <sys/param.h>
-#ifndef getwd
- char *getwd();
-#endif
-static char buf[MAXPATHLEN];
-int main() { exitmain(!getwd(buf)); }
-EOF
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then h=1 ok=OK
- else h=0 ok='does not work'
- fi
- echo >&3 $ok
-esac
-echo "$a#define has_getwd $h $z/* Does getwd() work? */"
-echo "#define needs_getabsname 0 /* Must we define getabsname? */"
-
-$ech >&3 "$0: configuring has_mktemp $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef mktemp
- char *mktemp();
-#endif
-int
-main() {
- char b[9];
- strcpy(b, "a.XXXXXX");
- exitmain(!mktemp(b));
-}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok=absent
-fi
-echo >&3 $ok
-echo "#define has_mktemp $h /* Does mktemp() work? */"
-
-: configuring has_NFS
-echo "#define has_NFS 1 /* Might NFS be used? */"
-
-case $has_signal,$has_sigaction in
-1,0)
- has_psiginfo=0;;
-*)
- $ech >&3 "$0: configuring has_psiginfo $dots"
- cat >a.c <<EOF
-#include "$A_H"
-static signal_type
-catchsig(s, i, c) int s; siginfo_t *i; void *c; {
- if (i)
- psiginfo(i, "test");
- exit(0);
-}
-int
-main() {
- struct sigaction s;
- if (sigaction(SIGINT, (struct sigaction*)0, &s) != 0)
- exitmain(1);
-# if has_sa_sigaction
- s.sa_sigaction = catchsig;
-# else
- s.sa_handler = catchsig;
-# endif
- if (sigaddset(&s.sa_mask, SIGINT) != 0)
- exitmain(1);
- s.sa_flags |= SA_SIGINFO;
- if (sigaction(SIGINT, &s, (struct sigaction*)0) != 0)
- exitmain(1);
-# if has_kill
- kill(getpid(), SIGINT);
-# else
- raise(SIGINT);
-# endif
- exitmain(1);
-}
-EOF
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then has_psiginfo=1 ok=OK
- else has_psiginfo=0 ok=absent
- fi
- echo >&3 $ok
-esac
-echo "#define has_psiginfo $has_psiginfo /* Does psiginfo() work? */"
-
-case $has_signal in
-1)
- $ech >&3 "$0: configuring has_psignal $dots"
- cat >a.c <<EOF
-#include "$A_H"
-int main() { psignal(SIGINT, ""); exitmain(0); }
-EOF
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then has_psignal=1 ok=OK
- else has_psignal=0 ok=absent
- fi
- echo >&3 $ok;;
-*) has_psignal=0
-esac
-echo "#define has_psignal $has_psignal /* Does psignal() work? */"
-
-case $has_psiginfo in
-1)
- $ech >&3 "$0: configuring has_si_errno $dots"
- cat >a.c <<EOF
-#include "$A_H"
-siginfo_t a;
-int main() { exitmain(a.si_errno); }
-EOF
- $PREPARE_CC || exit
- if $CS a.c $LS >&2 && $CS_OK
- then h=1 ok=OK
- else h=0 ok=absent
- fi
- echo >&3 $ok
- a= z=;;
-*) h=? a='/* ' z='*/ '
-esac
-echo "$a#define has_si_errno $h $z/* Does siginfo_t have si_errno? */"
-
-case $has_signal,$has_psignal in
-1,0)
- $ech >&3 "$0: configuring has_sys_siglist $dots"
- cat >a.c <<EOF
-#include "$A_H"
-#if !defined(sys_siglist) && declare_sys_siglist
- extern char const * const sys_siglist[];
-#endif
-int main() { exitmain(!sys_siglist[1][0]); }
-EOF
- $PREPARE_CC || exit
- h=0 ok=absent
- for d in 1 0
- do ($CL -Ddeclare_sys_siglist=$d a.c $L && $aout) >&2 &&
- h=1 && ok=OK && break
- done
- echo >&3 $ok
- a= z=;;
-*) h=? a='/* ' z='*/ '
-esac
-echo "$a#define has_sys_siglist $h $z/* Does sys_siglist[] work? */"
-
-$ech >&3 "$0: configuring strchr $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef strchr
- char *strchr();
-#endif
-int main() {exitmain(!strchr("abc", 'c'));}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then a='/* ' z='*/ ' ok=OK
-else a= z= ok='does not work'
-fi
-echo >&3 $ok
-echo "$a#define strchr index $z/* Use old-fashioned name for strchr()? */"
-
-$ech >&3 "$0: configuring strrchr $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef strrchr
- char *strrchr();
-#endif
-int main() {exitmain(!strrchr("abc", 'c'));}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then a='/* ' z='*/ ' ok=OK
-else a= z= ok='does not work'
-fi
-echo >&3 $ok
-echo "$a#define strrchr rindex $z/* Use old-fashioned name for strrchr()? */"
-
-$ech >&3 "$0: configuring bad_unlink $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(unlink("a.c") != 0); }
-EOF
-$PREPARE_CC && chmod -w a.c || exit
-if ($CL a.c $L && $aout) >&2 && test ! -f a.c
-then b=0 ok=OK
-else b=1 ok='will work around bug'
-fi
-rm -f a.c || exit
-echo >&3 $ok
-echo "#define bad_unlink $b /* Does unlink() fail on unwritable files? */"
-
-$ech >&3 "$0: configuring has_vfork $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef STDOUT_FILENO
-#define STDOUT_FILENO 1
-#endif
-#if !TRY_VFORK
-# undef vfork
-# define vfork fork
-#endif
-#if !TRY_WAITPID
-# undef waitpid
-# define waitpid(p,s,o) wait(s)
-#endif
-
-int
-main() {
- pid_t parent = getpid();
- pid_t child = vfork();
-
- if (child == 0) {
- /*
- * On sparc systems, changes by the child to local and incoming
- * argument registers are propagated back to the parent.
- * The compiler is told about this with #include <vfork.h>,
- * but some compilers (e.g. gcc -O) don't grok <vfork.h>.
- * Test for this by using lots of local variables, at least
- * as many local variables as 'main' has allocated so far
- * including compiler temporaries. 4 locals are enough for
- * gcc 1.40.3 on a sparc, but we use 8 to be safe.
- * A buggy compiler should reuse the register of 'parent'
- * for one of the local variables, since it will think that
- * 'parent' can't possibly be used any more in this routine.
- * Assigning to the local variable will thus munge 'parent'
- * in the parent process.
- */
- pid_t
- p = getpid(),
- p1 = getpid(), p2 = getpid(),
- p3 = getpid(), p4 = getpid(),
- p5 = getpid(), p6 = getpid(),
- p7 = getpid();
- /*
- * Convince the compiler that p..p7 are live; otherwise, it might
- * use the same hardware register for all 8 local variables.
- */
- if (p!=p1 || p!=p2 || p!=p3 || p!=p4 || p!=p5 || p!=p6 || p!=p7)
- _exit(1);
-
- /*
- * On some systems (e.g. IRIX 3.3),
- * vfork doesn't separate parent from child file descriptors.
- * If the child closes a descriptor before it execs or exits,
- * this munges the parent's descriptor as well.
- * Test for this by closing stdout in the child.
- */
- _exit(close(STDOUT_FILENO) != 0);
-
- } else {
- int status;
- struct stat st;
- exit(
- /* Was there some problem with vforking? */
- child < 0
-
- /* Was there some problem in waiting for the child? */
- || waitpid(child, &status, 0) != child
-
- /* Did the child fail? (This shouldn't happen.) */
- || status
-
- /* Did the vfork/compiler bug occur? */
- || parent != getpid()
-
- /* Did the file descriptor bug occur? */
- || fstat(STDOUT_FILENO, &st) != 0
- );
- }
-}
-EOF
-$PREPARE_CC || exit
-if ($CL -DTRY_VFORK=1 a.c $L && $aout) >&2
-then has_vfork=1 ok=OK
-else has_vfork=0 ok='absent or broken'
-fi
-echo >&3 $ok
-echo "#define has_vfork $has_vfork /* Does vfork() work? */"
-h=$has_vfork
-case $h in
-0)
- $ech >&3 "$0: configuring has_fork $dots"
- $PREPARE_CC || exit
- ok='does not work'
- ($CL a.c $L && $aout) >&2 && h=1 ok=OK
- echo >&3 $ok
-esac
-echo "#define has_fork $h /* Does fork() work? */"
-$PREPARE_CC || exit
-$ech >&3 "$0: configuring has_waitpid $dots"
-if ($CL -DTRY_VFORK=$has_vfork -DTRY_WAITPID=1 a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_spawn 0 /* Does spawn*() work? */"
-echo "#define has_waitpid $h /* Does waitpid() work? */"
-
-$ech >&3 "$0: configuring bad_wait_if_SIGCHLD_ignored $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef SIGCHLD
-#define SIGCHLD SIGCLD
-#endif
-int main() {
- signal(SIGCHLD, SIG_IGN);
- {
-# if has_fork
- int status;
- pid_t p = fork();
- if (p < 0) {
- perror("fork");
- exitmain(2);
- }
- if (p == 0)
- _exit(0);
- while (wait(&status) != p) {
- if (errno == ECHILD)
- exitmain(1);
- if (errno != EINTR) {
- perror("wait");
- exitmain(2);
- }
- }
-# else
-# if has_system
- if (system("true") != 0)
- exitmain(1);
-# endif
-# endif
- }
- exitmain(0);
-}
-EOF
-$PREPARE_CC || exit
-b=0 ok=OK
-if $CL a.c $L >&2
-then
- $aout >&2
- case $? in
- 0) ;;
- 1) b=1 ok='will work around bug';;
- *) exit
- esac
-fi
-rm -f a.c || exit
-echo >&3 $ok
-echo "#define bad_wait_if_SIGCHLD_ignored $b /* Does ignoring SIGCHLD break wait()? */"
-
-
-echo '#define RCS_SHELL "/bin/sh" /* shell to run RCS subprograms */'
-
-$ech >&3 "$0: configuring has_printf_dot $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { printf("%.2d", 1); exitmain(ferror(stdout) || fclose(stdout)!=0); }
-EOF
-$PREPARE_CC && $CL a.c $L >&2 && r=`$aout` || exit
-case $r in
-01) h=1 ok=OK;;
-*) h=0 ok='does not work'
-esac
-echo >&3 $ok
-echo "#define has_printf_dot $h /* Does \"%.2d\" print leading 0? */"
-
-$ech >&3 "$0: configuring has_vfprintf, has_attribute_format_printf $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#if has_attribute_format_printf
-# define printf_string(m, n) __attribute__((format(printf, m, n)))
-#else
-# define printf_string(m, n)
-#endif
-int p P((char const*,...)) printf_string(1, 2);
-#if has_prototypes
-int p(char const*format,...)
-#else
-/*VARARGS1*/ int p(format, va_alist) char *format; va_dcl
-#endif
-{
- int r;
- va_list args;
- vararg_start(args, format);
- r = vfprintf(stderr, format, args);
- va_end(args);
- return r;
-}
-int main() { exitmain(p("hello") != 5); }
-EOF
-$PREPARE_CC || exit
-h=0 p=0
-if ($CL a.c $L && sh -c 'pid=$$; (sleep 3; kill $pid)& exec '$aout) >&2
-then
- h=1
- $PREPARE_CC || exit
- $CS -Dhas_attribute_format_printf=1 a.c >&2 && $CS_OK && p=1
-else
- status=$?
- sh -c 'pid=$$; (sleep 3; kill $pid)& exec sleep 6' >&2
- if test $? = $status
- then
- echo >&3 "$0: stdio library loops forever. Giving up.
-$0: (Perhaps you are using Solaris 2.x /usr/ucb/cc?)
-$0: Please use a working stdio library instead."
- exit 1
- fi
-fi
-echo >&3 $h, $p
-cat <<EOF
-#define has_vfprintf $h /* Does vfprintf() work? */
-#define has_attribute_format_printf $p /* Does __attribute__((format(printf,N,N+1))) work? */
-#if has_attribute_format_printf
-# define printf_string(m, n) __attribute__((format(printf, m, n)))
-#else
-# define printf_string(m, n)
-#endif
-#if has_attribute_format_printf && has_attribute_noreturn
- /* Work around a bug in GCC 2.5.x. */
-# define printf_string_exiting(m, n) __attribute__((format(printf, m, n), noreturn))
-#else
-# define printf_string_exiting(m, n) printf_string(m, n) exiting
-#endif
-EOF
-
-case $h in
-1)
- h=? a='/* ' z='*/ ';;
-*)
- $ech >&3 "$0: configuring has__doprintf $dots"
- a= z=
- cat >a.c <<EOF
-#include "$A_H"
-#if has_prototypes
-static int
-p(char const*format,...)
-#else
-/*VARARGS1*/ static int p(format, va_alist) char *format; va_dcl
-#endif
-{
- va_list args;
- vararg_start(args, format);
-# if TRY__DOPRINTF
- _doprintf(stderr, format, args);
-# else
- _doprnt(format, args, stderr);
-# endif
- va_end(args);
-}
-int main() { p(""); exitmain(0); }
-EOF
- $PREPARE_CC || exit
- if ($CL -DTRY__DOPRINTF=1 a.c $L && $aout) >&2
- then h=1 ok=OK
- else h=0 ok='does not work'
- fi
- echo >&3 $ok
-esac
-echo "$a#define has__doprintf $h $z/* Does _doprintf() work? */"
-case $h in
-0)
- $ech >&3 "$0: configuring has__doprnt $dots"
- $PREPARE_CC || exit
- if ($CL a.c $L && $aout) >&2
- then h=1 ok=OK
- else h=0 ok='does not work'
- fi
- echo >&3 $ok
- a= z=;;
-*)
- h=? a='/* ' z='*/ '
-esac
-echo "$a#define has__doprnt $h $z/* Does _doprnt() work? */"
-
-$ech >&3 "$0: configuring EXIT_FAILURE $dots"
-cat >a.c <<EOF
-#include "$A_H"
-int main() { exitmain(EXIT_FAILURE); }
-EOF
-$PREPARE_CC || exit
-if $CL a.c $L >&2 && $aout
-then a= z= ok='will work around bug'
-else a='/* ' z='*/ ' ok=OK
-fi
-echo >&3 $ok
-echo "$a#undef EXIT_FAILURE $z/* Uncomment this if EXIT_FAILURE is broken. */"
-
-: configuring large_memory
-case "$has_map_fd$has_mmap" in
-*1*) l=1;;
-*) l=0
-esac
-echo "#define large_memory $l /* Can main memory hold entire RCS files? */"
-
-$ech >&3 "$0: configuring LONG_MAX $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static unsigned long ulong_max;
-static long long_max;
-int
-main() {
- ulong_max--;
- long_max = ulong_max >> 1;
- printf("#ifndef LONG_MAX\n");
- printf("#define LONG_MAX %ldL /* long maximum */\n", long_max);
- printf("#endif\n");
- exitmain(ferror(stdout) || fclose(stdout)!=0);
-}
-EOF
-$PREPARE_CC && $CL a.c $L >&2 && $aout || exit
-echo >&3 OK
-
-: configuring same_file
-echo "/* Do struct stat s and t describe the same file? Answer d if unknown. */"
-echo "#define same_file(s,t,d) ((s).st_ino==(t).st_ino && (s).st_dev==(t).st_dev)"
-
-$ech >&3 "$0: configuring struct utimbuf $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static struct utimbuf s;
-int main() { s.actime = s.modtime = 1; exitmain(utime("a.c", &s) != 0); }
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then h=1 ok=OK
-else h=0 ok='does not work'
-fi
-echo >&3 $ok
-echo "#define has_utimbuf $h /* Does struct utimbuf work? */"
-
-: configuring CO
-echo "#define CO \"${RCSPREFIX}co\" /* name of 'co' program */"
-
-: configuring COMPAT2
-echo "#define COMPAT2 $COMPAT2 /* Are version 2 files supported? */"
-
-: configuring DIFF
-echo "#define DIFF \"${DIFF}\" /* name of 'diff' program */"
-
-: configuring DIFF3
-echo "#define DIFF3 \"${DIFF3}\" /* name of 'diff3' program */"
-
-: configuring DIFF3_BIN
-echo "#define DIFF3_BIN $DIFF3_BIN /* Is diff3 user-visible (not the /usr/lib auxiliary)? */"
-
-: configuring DIFFFLAGS
-echo "#define DIFFFLAGS \"$DIFFFLAGS\" /* Make diff output suitable for RCS. */"
-
-: configuring DIFF_L
-echo "#define DIFF_L $DIFF_L /* Does diff -L work? */"
-
-: configuring DIFF_SUCCESS, DIFF_FAILURE, DIFF_TROUBLE
-cat <<EOF
-#define DIFF_SUCCESS $DIFF_SUCCESS /* DIFF status if no differences are found */
-#define DIFF_FAILURE $DIFF_FAILURE /* DIFF status if differences are found */
-#define DIFF_TROUBLE $DIFF_TROUBLE /* DIFF status if trouble */
-EOF
-
-: configuring ED
-echo "#define ED \"${ED}\" /* name of 'ed' program (used only if !DIFF3_BIN) */"
-
-: configuring MERGE
-echo "#define MERGE \"${RCSPREFIX}merge\" /* name of 'merge' program */"
-
-: configuring '*SLASH*', ROOTPATH, TMPDIR, X_DEFAULT
-case ${PWD-`pwd`} in
-/*) # Posix
- SLASH=/
- qSLASH="'/'"
- SLASHes=$qSLASH
- isSLASH='#define isSLASH(c) ((c) == SLASH)'
- ROOTPATH='isSLASH((p)[0])'
- X_DEFAULT=",v$SLASH";;
-?:[/\\\\]*) # MS-DOS # \\\\ instead of \\ doesn't hurt, and avoids common bugs
- SLASH='\'
- qSLASH="'\\\\'"
- SLASHes="$qSLASH: case '/': case ':'"
- isSLASH='int isSLASH P((int));'
- ROOTPATH="(isSLASH((p)[0]) || (p)[0] && (p)[1]==':')"
- X_DEFAULT="$SLASH,v";;
-*)
- echo >&3 $0: cannot deduce SLASH
- exit 1
-esac
-cat <<EOF
-#define TMPDIR "${SLASH}tmp" /* default directory for temporary files */
-#define SLASH $qSLASH /* principal filename separator */
-#define SLASHes $SLASHes /* \`case SLASHes:' labels all filename separators */
-$isSLASH /* Is arg a filename separator? */
-#define ROOTPATH(p) $ROOTPATH /* Is p an absolute pathname? */
-#define X_DEFAULT "$X_DEFAULT" /* default value for -x option */
-EOF
-
-$ech >&3 "$0: configuring SLASHSLASH_is_SLASH $dots"
-cat >a.c <<EOF
-#include "$A_H"
-static struct stat s, ss;
-static char f[3];
-int
-main() {
- f[0] = SLASH; if (stat(f, &s ) != 0) exitmain(1);
- f[1] = SLASH; if (stat(f, &ss) != 0) exitmain(1);
- exitmain(!same_file(s, ss, 0));
-}
-EOF
-$PREPARE_CC || exit
-if ($CL a.c $L && $aout) >&2
-then eq=1 ok=OK
-else eq=0 ok=no
-fi
-echo >&3 $ok
-echo "#define SLASHSLASH_is_SLASH $eq /* Are // and / the same directory? */"
-
-$ech >&3 "$0: configuring ALL_ABSOLUTE, DIFF_ABSOLUTE $dots"
-cat >a.c <<EOF
-#include "$A_H"
-#ifndef isSLASH
-static int
-isSLASH(c) int c; {
- switch (c) { case SLASHes: return 1; } return 0;
-}
-#endif
-int
-main(argc, argv) int argc; char **argv; {
- exitmain(1<argc && !ROOTPATH(argv[1]));
-}
-EOF
-$PREPARE_CC && ($CL a.c $L && $aout) >&2 || exit
-a=1
-for i in "$DIFF" "$DIFF3" "$ED" "$RCSPREFIX" "$SENDMAIL"
-do
- case $i in
- \"*\") i=`expr "$i" : '"\(.*\)"'`
- esac
- case $i in
- ?*) $aout "$i" || { a=0; break; }
- esac
-done
-echo "#define ALL_ABSOLUTE $a /* Do all subprograms satisfy ROOTPATH? */"
-if $aout "$DIFF"
-then a=1
-else a=0
-fi
-echo "#define DIFF_ABSOLUTE $a /* Is ROOTPATH(DIFF) true? */"
-echo >&3 OK
-
-: configuring SENDMAIL
-case $SENDMAIL in
-'') a='/* ' z='*/ ';;
-*) a= z=
-esac
-echo "$a#define SENDMAIL $SENDMAIL $z/* how to send mail */"
-
-: configuring TZ_must_be_set
-echo "#define TZ_must_be_set 0 /* Must TZ be set for gmtime() to work? */"
-
-
-$ech >&3 "$0: configuring standard library declarations $dots"
-
-cat <<'EOF'
-
-
-
-/* Adjust the following declarations as needed. */
-EOF
-
-cat >a.ha <<EOF
-
-
-/* The rest is for the benefit of non-standard, traditional hosts. */
-/* Don't bother to declare functions that in traditional hosts do not appear, */
-/* or are declared in .h files, or return int or void. */
-
-
-/* traditional BSD */
-
-#if has_sys_siglist && !defined(sys_siglist)
- extern char const * const sys_siglist[];
-#endif
-
-
-/* Posix (ISO/IEC 9945-1: 1990 / IEEE Std 1003.1-1990) */
-
-/* <fcntl.h> */
-#ifdef O_CREAT
-# define open_can_creat 1
-#else
-# define open_can_creat 0
-# define O_RDONLY 0
-# define O_WRONLY 1
-# define O_RDWR 2
-# define O_CREAT 01000
-# define O_TRUNC 02000
-#endif
-#ifndef O_EXCL
-#define O_EXCL 0
-#endif
-
-/* <sys/stat.h> */
-#ifndef S_IRUSR
-# ifdef S_IREAD
-# define S_IRUSR S_IREAD
-# else
-# define S_IRUSR 0400
-# endif
-# ifdef S_IWRITE
-# define S_IWUSR S_IWRITE
-# else
-# define S_IWUSR (S_IRUSR/2)
-# endif
-#endif
-#ifndef S_IRGRP
-# if has_getuid
-# define S_IRGRP (S_IRUSR / 0010)
-# define S_IWGRP (S_IWUSR / 0010)
-# define S_IROTH (S_IRUSR / 0100)
-# define S_IWOTH (S_IWUSR / 0100)
-# else
- /* single user OS -- not Posix or Unix */
-# define S_IRGRP 0
-# define S_IWGRP 0
-# define S_IROTH 0
-# define S_IWOTH 0
-# endif
-#endif
-#ifndef S_ISREG
-#define S_ISREG(n) (((n) & S_IFMT) == S_IFREG)
-#endif
-
-/* <sys/wait.h> */
-#ifndef WEXITSTATUS
-#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
-#undef WIFEXITED /* Avoid 4.3BSD incompatibility with Posix. */
-#endif
-#ifndef WIFEXITED
-#define WIFEXITED(stat_val) (((stat_val) & 0377) == 0)
-#endif
-#ifndef WTERMSIG
-#define WTERMSIG(stat_val) ((stat_val) & 0177)
-#undef WIFSIGNALED /* Avoid 4.3BSD incompatibility with Posix. */
-#endif
-#ifndef WIFSIGNALED
-#define WIFSIGNALED(stat_val) ((unsigned)(stat_val) - 1 < 0377)
-#endif
-
-/* <unistd.h> */
-char *getlogin P((void));
-#ifndef STDIN_FILENO
-# define STDIN_FILENO 0
-# define STDOUT_FILENO 1
-# define STDERR_FILENO 2
-#endif
-#if has_fork && !has_vfork
-# undef vfork
-# define vfork fork
-#endif
-#if has_getcwd || !has_getwd
- char *getcwd P((char*,size_t));
-#else
- char *getwd P((char*));
-#endif
-#if has_setuid && !has_seteuid
-# undef seteuid
-# define seteuid setuid
-#endif
-#if has_spawn
-# if ALL_ABSOLUTE
-# define spawn_RCS spawnv
-# else
-# define spawn_RCS spawnvp
-# endif
-#else
-# if ALL_ABSOLUTE
-# define exec_RCS execv
-# else
-# define exec_RCS execvp
-# endif
-#endif
-
-/* utime.h */
-#if !has_utimbuf
- struct utimbuf { time_t actime, modtime; };
-#endif
-
-
-/* Standard C library */
-
-/* <stdio.h> */
-#ifndef L_tmpnam
-#define L_tmpnam 32 /* power of 2 > sizeof("/usr/tmp/xxxxxxxxxxxxxxx") */
-#endif
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-#if has_mktemp
- char *mktemp P((char*)); /* traditional */
-#else
- char *tmpnam P((char*));
-#endif
-
-/* <stdlib.h> */
-char *getenv P((char const*));
-void _exit P((int)) exiting;
-void exit P((int)) exiting;
-malloc_type malloc P((size_t));
-malloc_type realloc P((malloc_type,size_t));
-#ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
-#endif
-#ifndef EXIT_SUCCESS
-#define EXIT_SUCCESS 0
-#endif
-
-/* <string.h> */
-char *strcpy P((char*,char const*));
-char *strchr P((char const*,int));
-char *strrchr P((char const*,int));
-void *memcpy P((void*,void const*,size_t));
-#if has_memmove
- void *memmove P((void*,void const*,size_t));
-#endif
-
-/* <time.h> */
-time_t time P((time_t*));
-EOF
-
-cat >a.c <<EOF
-#include "$A_H"
-#define a 0
-#define b 1
-#if H==a
-# include "a.ha"
-#else
-# include "a.hb"
-#endif
-int main() { exitmain(0); }
-EOF
-
-# Comment out lines in a.ha that the compiler rejects.
-# a.ha may not contain comments that cross line boundaries.
-# Leave the result in a.h$H.
-H=a L=1
-U=`wc -l <a.ha | sed 's| ||g'`
-commentOut='s|^[^#/][^/]*|/* & */|'
-
-until
- test $U -lt $L ||
- { $PREPARE_CC || exit; $CS -DH=$H a.c $LS >&2 && $CS_OK; }
-do
- case $H in
- a) I=b;;
- *) I=a
- esac
-
- # The compiler rejects some line in L..U.
- # Use binary search to set L to be the index of the first bad line in L..U.
- u=$U
- while test $L -lt $u
- do
- M=`expr '(' $L + $u ')' / 2`
- M1=`expr $M + 1`
- sed "$M1,\$$commentOut" a.h$H >a.h$I || exit
- $PREPARE_CC || exit
- if $CS -DH=$I a.c $LS >&2 && $CS_OK
- then L=$M1
- else u=$M
- fi
- done
-
- # Comment out the bad line.
- badline=`sed -n "$L{p;q;}" a.h$H`
- echo >&3 "$n$0: commenting out \`$badline' $dots"
- sed "$L$commentOut" a.h$H >a.h$I || exit
-
- H=$I
- L=`expr $L + 1`
-done
-
-cat a.h$H
-
-echo >&3 OK
-
projects / gentoo.git / commitdiff