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Overview
Comment:Tcl source code already assumes the <limits.h> file is available. (See tcl/libtommath/tommath.h .) So dispose of all the configuration shenanigans pretending we want to support systems that lack one.
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SHA1: 713e898a78dcee6a6d639cac91b66b16380923c5
User & Date: dgp 2015-03-24 17:34:05
Context
2015-03-24
18:27
There's no need to constrain the declaration of Tcl_GetMemoryInfo(). check-in: 07823e2c5d user: dgp tags: trunk
17:34
Tcl source code already assumes the <limits.h> file is available. (See tcl/libtommath/tommath.h .) ... check-in: 713e898a78 user: dgp tags: trunk
2015-03-23
16:05
fix comments describing tailcall implementation check-in: 3a9cbfee23 user: msofer tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Deleted compat/limits.h. 

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/*
 * limits.h --
 *
 *	This is a dummy header file to #include in Tcl when there
 *	is no limits.h in /usr/include.  There are only a few
 *	definitions here;  also see tclPort.h, which already
 *	#defines some of the things here if they're not arleady
 *	defined.
 *
 * Copyright (c) 1991 The Regents of the University of California.
 * Copyright (c) 1994 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#define LONG_MIN		0x80000000
#define LONG_MAX		0x7fffffff
#define INT_MIN			0x80000000
#define INT_MAX			0x7fffffff
#define SHRT_MIN		0x8000
#define SHRT_MAX		0x7fff

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Changes to generic/tcl.h.

︙︙
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#      define TCL_WIDE_INT_TYPE long long
#      define TCL_LL_MODIFIER	"ll"
#   else /* ! _WIN32 && ! __GNUC__ */
/*
 * Don't know what platform it is and configure hasn't discovered what is
 * going on for us. Try to guess...
 */
#      ifdef NO_LIMITS_H
#	  error please define either TCL_WIDE_INT_TYPE or TCL_WIDE_INT_IS_LONG
#      else /* !NO_LIMITS_H */
#	  include <limits.h>
#	  if (INT_MAX < LONG_MAX)
#	     define TCL_WIDE_INT_IS_LONG	1
#	  else
#	     define TCL_WIDE_INT_TYPE long long
#         endif
#      endif /* NO_LIMITS_H */
#   endif /* _WIN32 */
#endif /* !TCL_WIDE_INT_TYPE & !TCL_WIDE_INT_IS_LONG */
#ifdef TCL_WIDE_INT_IS_LONG
#   undef TCL_WIDE_INT_TYPE
#   define TCL_WIDE_INT_TYPE	long
#endif /* TCL_WIDE_INT_IS_LONG */









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#      define TCL_WIDE_INT_TYPE long long
#      define TCL_LL_MODIFIER	"ll"
#   else /* ! _WIN32 && ! __GNUC__ */
/*
 * Don't know what platform it is and configure hasn't discovered what is
 * going on for us. Try to guess...
 */



#      include <limits.h>
#      if (INT_MAX < LONG_MAX)
#         define TCL_WIDE_INT_IS_LONG	1
#      else
#         define TCL_WIDE_INT_TYPE long long

#      endif
#   endif /* _WIN32 */
#endif /* !TCL_WIDE_INT_TYPE & !TCL_WIDE_INT_IS_LONG */
#ifdef TCL_WIDE_INT_IS_LONG
#   undef TCL_WIDE_INT_TYPE
#   define TCL_WIDE_INT_TYPE	long
#endif /* TCL_WIDE_INT_IS_LONG */
︙︙

Changes to unix/configure.

︙︙
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  :
else

cat >>confdefs.h <<\_ACEOF
#define NO_VALUES_H 1
_ACEOF

fi


    if test "${ac_cv_header_limits_h+set}" = set; then
  echo "$as_me:$LINENO: checking for limits.h" >&5
echo $ECHO_N "checking for limits.h... $ECHO_C" >&6
if test "${ac_cv_header_limits_h+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
fi
echo "$as_me:$LINENO: result: $ac_cv_header_limits_h" >&5
echo "${ECHO_T}$ac_cv_header_limits_h" >&6
else
  # Is the header compilable?
echo "$as_me:$LINENO: checking limits.h usability" >&5
echo $ECHO_N "checking limits.h usability... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <limits.h>
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
	 { ac_try='test -z "$ac_c_werror_flag"
			 || test ! -s conftest.err'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; } &&
	 { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_header_compiler=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_header_compiler=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
echo "${ECHO_T}$ac_header_compiler" >&6

# Is the header present?
echo "$as_me:$LINENO: checking limits.h presence" >&5
echo $ECHO_N "checking limits.h presence... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <limits.h>
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  ac_header_preproc=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi
rm -f conftest.err conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
echo "${ECHO_T}$ac_header_preproc" >&6

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { echo "$as_me:$LINENO: WARNING: limits.h: accepted by the compiler, rejected by the preprocessor!" >&5
echo "$as_me: WARNING: limits.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h: proceeding with the compiler's result" >&5
echo "$as_me: WARNING: limits.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { echo "$as_me:$LINENO: WARNING: limits.h: present but cannot be compiled" >&5
echo "$as_me: WARNING: limits.h: present but cannot be compiled" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h:     check for missing prerequisite headers?" >&5
echo "$as_me: WARNING: limits.h:     check for missing prerequisite headers?" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h: see the Autoconf documentation" >&5
echo "$as_me: WARNING: limits.h: see the Autoconf documentation" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h:     section \"Present But Cannot Be Compiled\"" >&5
echo "$as_me: WARNING: limits.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h: proceeding with the preprocessor's result" >&5
echo "$as_me: WARNING: limits.h: proceeding with the preprocessor's result" >&2;}
    { echo "$as_me:$LINENO: WARNING: limits.h: in the future, the compiler will take precedence" >&5
echo "$as_me: WARNING: limits.h: in the future, the compiler will take precedence" >&2;}
    (
      cat <<\_ASBOX
## ------------------------------ ##
## Report this to the tcl lists.  ##
## ------------------------------ ##
_ASBOX
    ) |
      sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
echo "$as_me:$LINENO: checking for limits.h" >&5
echo $ECHO_N "checking for limits.h... $ECHO_C" >&6
if test "${ac_cv_header_limits_h+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  ac_cv_header_limits_h=$ac_header_preproc
fi
echo "$as_me:$LINENO: result: $ac_cv_header_limits_h" >&5
echo "${ECHO_T}$ac_cv_header_limits_h" >&6

fi
if test $ac_cv_header_limits_h = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_LIMITS_H 1
_ACEOF

else

cat >>confdefs.h <<\_ACEOF
#define NO_LIMITS_H 1
_ACEOF

fi


    if test "${ac_cv_header_stdlib_h+set}" = set; then
  echo "$as_me:$LINENO: checking for stdlib.h" >&5
echo $ECHO_N "checking for stdlib.h... $ECHO_C" >&6
if test "${ac_cv_header_stdlib_h+set}" = set; then








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  :
else

cat >>confdefs.h <<\_ACEOF
#define NO_VALUES_H 1
_ACEOF

























































































































































fi


    if test "${ac_cv_header_stdlib_h+set}" = set; then
  echo "$as_me:$LINENO: checking for stdlib.h" >&5
echo $ECHO_N "checking for stdlib.h... $ECHO_C" >&6
if test "${ac_cv_header_stdlib_h+set}" = set; then
︙︙

Changes to unix/tcl.m4.

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#	none
#
# Results:
#
#	Defines some of the following vars:
#		NO_DIRENT_H
#		NO_VALUES_H
#		HAVE_LIMITS_H or NO_LIMITS_H
#		NO_STDLIB_H
#		NO_STRING_H
#		NO_SYS_WAIT_H
#		NO_DLFCN_H
#		HAVE_SYS_PARAM_H
#
#		HAVE_STRING_H ?








<








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#	none
#
# Results:
#
#	Defines some of the following vars:
#		NO_DIRENT_H
#		NO_VALUES_H

#		NO_STDLIB_H
#		NO_STRING_H
#		NO_SYS_WAIT_H
#		NO_DLFCN_H
#		HAVE_SYS_PARAM_H
#
#		HAVE_STRING_H ?
︙︙
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    if test $tcl_cv_dirent_h = no; then
	AC_DEFINE(NO_DIRENT_H, 1, [Do we have <dirent.h>?])
    fi

    AC_CHECK_HEADER(float.h, , [AC_DEFINE(NO_FLOAT_H, 1, [Do we have <float.h>?])])
    AC_CHECK_HEADER(values.h, , [AC_DEFINE(NO_VALUES_H, 1, [Do we have <values.h>?])])
    AC_CHECK_HEADER(limits.h,
	[AC_DEFINE(HAVE_LIMITS_H, 1, [Do we have <limits.h>?])],
	[AC_DEFINE(NO_LIMITS_H, 1, [Do we have <limits.h>?])])
    AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
    AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
    if test $tcl_ok = 0; then
	AC_DEFINE(NO_STDLIB_H, 1, [Do we have <stdlib.h>?])
    fi








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    if test $tcl_cv_dirent_h = no; then
	AC_DEFINE(NO_DIRENT_H, 1, [Do we have <dirent.h>?])
    fi

    AC_CHECK_HEADER(float.h, , [AC_DEFINE(NO_FLOAT_H, 1, [Do we have <float.h>?])])
    AC_CHECK_HEADER(values.h, , [AC_DEFINE(NO_VALUES_H, 1, [Do we have <values.h>?])])



    AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
    AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
    if test $tcl_ok = 0; then
	AC_DEFINE(NO_STDLIB_H, 1, [Do we have <stdlib.h>?])
    fi
︙︙

Changes to unix/tclConfig.h.in.

︙︙
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/* Do we have nl_langinfo()? */
#undef HAVE_LANGINFO

/* Define to 1 if you have the <libkern/OSAtomic.h> header file. */
#undef HAVE_LIBKERN_OSATOMIC_H

/* Do we have <limits.h>? */
#undef HAVE_LIMITS_H

/* Define to 1 if you have the `localtime_r' function. */
#undef HAVE_LOCALTIME_R

/* Define to 1 if you have the `lseek64' function. */
#undef HAVE_LSEEK64

/* Define to 1 if you have the <memory.h> header file. */








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/* Do we have nl_langinfo()? */
#undef HAVE_LANGINFO

/* Define to 1 if you have the <libkern/OSAtomic.h> header file. */
#undef HAVE_LIBKERN_OSATOMIC_H




/* Define to 1 if you have the `localtime_r' function. */
#undef HAVE_LOCALTIME_R

/* Define to 1 if you have the `lseek64' function. */
#undef HAVE_LSEEK64

/* Define to 1 if you have the <memory.h> header file. */
︙︙
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/* Do we have getwd() */
#undef NO_GETWD

/* Do we have a usable 'isnan'? */
#undef NO_ISNAN

/* Do we have <limits.h>? */
#undef NO_LIMITS_H

/* Do we have memmove()? */
#undef NO_MEMMOVE

/* Do we have realpath() */
#undef NO_REALPATH

/* Do we have <stdlib.h>? */








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/* Do we have getwd() */
#undef NO_GETWD

/* Do we have a usable 'isnan'? */
#undef NO_ISNAN




/* Do we have memmove()? */
#undef NO_MEMMOVE

/* Do we have realpath() */
#undef NO_REALPATH

/* Do we have <stdlib.h>? */
︙︙

Changes to unix/tclUnixPort.h.

︙︙
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#endif
#ifndef NO_SYS_WAIT_H
#   include <sys/wait.h>
#endif
#if HAVE_INTTYPES_H
#   include <inttypes.h>
#endif
#ifdef NO_LIMITS_H
#   include "../compat/limits.h"
#else
#   include <limits.h>
#endif
#if HAVE_STDINT_H
#   include <stdint.h>
#endif
#ifdef HAVE_UNISTD_H
#   include <unistd.h>
#else
#   include "../compat/unistd.h"








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#endif
#ifndef NO_SYS_WAIT_H
#   include <sys/wait.h>
#endif
#if HAVE_INTTYPES_H
#   include <inttypes.h>
#endif



#include <limits.h>

#if HAVE_STDINT_H
#   include <stdint.h>
#endif
#ifdef HAVE_UNISTD_H
#   include <unistd.h>
#else
#   include "../compat/unistd.h"
︙︙

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