Always include stdbool.h, not only on Windows. We assume C99 already.

Author: jan.nijtmans

generic/tclInt.h

@@ -68,6 +68,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdbool.h>
 #include <string.h>
 #include <locale.h>
 
@@ -149,7 +150,6 @@
 #elif defined(__GNUC__)
 #define TCL_UNREACHABLE()	__builtin_unreachable()
 #elif defined(_MSC_VER)
-#include <stdbool.h>
 #define TCL_UNREACHABLE()	__assume(false)
 #else
 #define TCL_UNREACHABLE()	((void) 0)

unix/configure

@@ -7540,15 +7540,6 @@ printf "%s\n" "$tcl_cv_cc_input_charset" >&6; }
 	CFLAGS="$CFLAGS -finput-charset=UTF-8"
     fi
 
-    ac_fn_c_check_header_compile "$LINENO" "stdbool.h" "ac_cv_header_stdbool_h" "$ac_includes_default"
-if test "x$ac_cv_header_stdbool_h" = xyes
-then :
-
-printf "%s\n" "#define HAVE_STDBOOL_H 1" >>confdefs.h
-
-fi
-
-
     # Check for vfork, posix_spawnp() and friends unconditionally
     ac_fn_c_check_func "$LINENO" "vfork" "ac_cv_func_vfork"
 if test "x$ac_cv_func_vfork" = xyes

unix/tcl.m4

@@ -1862,8 +1862,6 @@ dnl # preprocessing tests use only CPPFLAGS.
 	CFLAGS="$CFLAGS -finput-charset=UTF-8"
     fi
 
-    AC_CHECK_HEADER(stdbool.h, [AC_DEFINE(HAVE_STDBOOL_H, 1, [Do we have <stdbool.h>?])],)
-
     # Check for vfork, posix_spawnp() and friends unconditionally
     AC_CHECK_FUNCS(vfork posix_spawnp posix_spawn_file_actions_adddup2 posix_spawnattr_setflags)
 

unix/tclConfig.h.in

@@ -196,9 +196,6 @@
 /* Are characters signed? */
 #undef HAVE_SIGNED_CHAR
 
-/* Do we have <stdbool.h>? */
-#undef HAVE_STDBOOL_H
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 

win/configure

@@ -607,38 +607,6 @@ PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
 ac_unique_file="../generic/tcl.h"
-# Factoring default headers for most tests.
-ac_includes_default="\
-#include <stddef.h>
-#ifdef HAVE_STDIO_H
-# include <stdio.h>
-#endif
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-# include <string.h>
-#endif
-#ifdef HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-#ifdef HAVE_STDINT_H
-# include <stdint.h>
-#endif
-#ifdef HAVE_STRINGS_H
-# include <strings.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
-#endif
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif"
-
-ac_header_c_list=
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 RES
@@ -1570,41 +1538,6 @@ fi
 
 } # ac_fn_c_try_compile
 
-# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
-# -------------------------------------------------------
-# Tests whether HEADER exists and can be compiled using the include files in
-# INCLUDES, setting the cache variable VAR accordingly.
-ac_fn_c_check_header_compile ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-printf %s "checking for $2... " >&6; }
-if eval test \${$3+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-#include <$2>
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  eval "$3=yes"
-else case e in #(
-  e) eval "$3=no" ;;
-esac
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;
-esac
-fi
-eval ac_res=\$$3
-	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-printf "%s\n" "$ac_res" >&6; }
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_header_compile
-
 # ac_fn_c_check_type LINENO TYPE VAR INCLUDES
 # -------------------------------------------
 # Tests whether TYPE exists after having included INCLUDES, setting cache
@@ -2322,15 +2255,6 @@ main (int argc, char **argv)
 }
 "
 
-as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"
-as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"
-as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"
-as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"
-as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"
-as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"
-as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"
-as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"
-as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"
 # Check that the precious variables saved in the cache have kept the same
 # value.
 ac_cache_corrupted=false
@@ -3944,35 +3868,6 @@ printf "%s\n" "#define STATIC_BUILD 1" >>confdefs.h
 # after SC_ENABLE_SHARED checks the configure switches.
 #--------------------------------------------------------------------
 
-ac_header= ac_cache=
-for ac_item in $ac_header_c_list
-do
-  if test $ac_cache; then
-    ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"
-    if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then
-      printf "%s\n" "#define $ac_item 1" >> confdefs.h
-    fi
-    ac_header= ac_cache=
-  elif test $ac_header; then
-    ac_cache=$ac_item
-  else
-    ac_header=$ac_item
-  fi
-done
-
-
-
-
-
-
-
-
-if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes
-then :
-
-printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
-
-fi
 
 
     # Step 0: Enable 64 bit support?
@@ -4887,15 +4782,6 @@ printf "%s\n" "#define EXCEPTION_DISPOSITION int" >>confdefs.h
 
 	fi
 
-	ac_fn_c_check_header_compile "$LINENO" "stdbool.h" "ac_cv_header_stdbool_h" "$ac_includes_default"
-if test "x$ac_cv_header_stdbool_h" = xyes
-then :
-
-printf "%s\n" "#define HAVE_STDBOOL_H 1" >>confdefs.h
-
-fi
-
-
 	# See if the compiler supports casting to a union type.
 	# This is used to stop gcc from printing a compiler
 	# warning when initializing a union member.

win/tcl.m4

@@ -946,8 +946,6 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 		[Defined when cygwin/mingw does not support EXCEPTION DISPOSITION])
 	fi
 
-	AC_CHECK_HEADER(stdbool.h, [AC_DEFINE(HAVE_STDBOOL_H, 1, [Do we have <stdbool.h>?])],)
-
 	# See if the compiler supports casting to a union type.
 	# This is used to stop gcc from printing a compiler
 	# warning when initializing a union member.