Assume C99 or later.

* lib/stdarg.in.h, lib/stdbool.in.h, m4/stdarg.m4, m4/stdbool.m4:
Remove.
* configure.ac (_AC_PROG_CC_C89): Define a dummy, to keep 'configure'
smaller.
(gl_PROG_CC_C99): Use this to get C99 or later.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* admin/merge-gnulib (GNULIB_MODULES): Remove stdarg, stdbool.
(GNULIB_TOOL_FLAGS): Avoid stdarg, stdbool.
* doc/lispref/internals.texi (C Dialect): Document this.
* etc/NEWS: Document this.
* nt/gnulib.mk: Remove stdarg and stdbool modules.
* src/bytecode.c (B__dummy__): Remove.
* src/conf_post.h (bool_bf) [!NS_IMPL_GNUSTEP]: Use bool.
(FLEXIBLE_ARRAY_MEMBER): Now always empty.
* src/dbusbind.c (XD_DEBUG_MESSAGE) [!DBUS_DEBUG]:
* src/regex.c (DEBUG_PRINT): Assume varargs macros.
* src/lisp.h (DEFUN_FUNCTION_INIT): Remove.  All uses now assume C99.

Fixes: debbugs:17487

3 files changed, 0 insertions, 191 deletions

diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index 0ba2d7950af..98acc069c92 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -119,13 +119,6 @@ AC_DEFUN([gl_EARLY],
   # Code from module stat:
   # Code from module stat-time:
   # Code from module stdalign:
-  # Code from module stdarg:
-  dnl Some compilers (e.g., AIX 5.3 cc) need to be in c99 mode
-  dnl for the builtin va_copy to work.  With Autoconf 2.60 or later,
-  dnl gl_PROG_CC_C99 arranges for this.  With older Autoconf gl_PROG_CC_C99
-  dnl shouldn't hurt, though installers are on their own to set c99 mode.
-  gl_PROG_CC_C99
-  # Code from module stdbool:
   # Code from module stddef:
   # Code from module stdint:
   # Code from module stdio:
@@ -342,8 +335,6 @@ AC_DEFUN([gl_INIT],
   gl_STAT_TIME
   gl_STAT_BIRTHTIME
   gl_STDALIGN_H
-  gl_STDARG_H
-  AM_STDBOOL_H
   gl_STDDEF_H
   gl_STDINT_H
   gl_STDIO_H
@@ -891,8 +882,6 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/stat-time.h
   lib/stat.c
   lib/stdalign.in.h
-  lib/stdarg.in.h
-  lib/stdbool.in.h
   lib/stddef.in.h
   lib/stdint.in.h
   lib/stdio.in.h
@@ -998,8 +987,6 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/stat-time.m4
   m4/stat.m4
   m4/stdalign.m4
-  m4/stdarg.m4
-  m4/stdbool.m4
   m4/stddef_h.m4
   m4/stdint.m4
   m4/stdio_h.m4
diff --git a/m4/stdarg.m4 b/m4/stdarg.m4
deleted file mode 100644
index 732aa313b6a..00000000000
--- a/m4/stdarg.m4
+++ /dev/null
@@ -1,78 +0,0 @@
-# stdarg.m4 serial 6
-dnl Copyright (C) 2006, 2008-2014 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-dnl From Bruno Haible.
-dnl Provide a working va_copy in combination with <stdarg.h>.
-
-AC_DEFUN([gl_STDARG_H],
-[
-  STDARG_H=''
-  NEXT_STDARG_H='<stdarg.h>'
-  AC_MSG_CHECKING([for va_copy])
-  AC_CACHE_VAL([gl_cv_func_va_copy], [
-    AC_COMPILE_IFELSE(
-      [AC_LANG_PROGRAM(
-         [[#include <stdarg.h>]],
-         [[
-#ifndef va_copy
-void (*func) (va_list, va_list) = va_copy;
-#endif
-         ]])],
-      [gl_cv_func_va_copy=yes],
-      [gl_cv_func_va_copy=no])])
-  AC_MSG_RESULT([$gl_cv_func_va_copy])
-  if test $gl_cv_func_va_copy = no; then
-    dnl Provide a substitute.
-    dnl Usually a simple definition in <config.h> is enough. Not so on AIX 5
-    dnl with some versions of the /usr/vac/bin/cc compiler. It has an <stdarg.h>
-    dnl which does '#undef va_copy', leading to a missing va_copy symbol. For
-    dnl this platform, we use an <stdarg.h> substitute. But we cannot use this
-    dnl approach on other platforms, because <stdarg.h> often defines only
-    dnl preprocessor macros and gl_ABSOLUTE_HEADER, gl_CHECK_NEXT_HEADERS do
-    dnl not work in this situation.
-    AC_EGREP_CPP([vaccine],
-      [#if defined _AIX && !defined __GNUC__
-        AIX vaccine
-       #endif
-      ], [gl_aixcc=yes], [gl_aixcc=no])
-    if test $gl_aixcc = yes; then
-      dnl Provide a substitute <stdarg.h> file.
-      STDARG_H=stdarg.h
-      gl_NEXT_HEADERS([stdarg.h])
-      dnl Fallback for the case when <stdarg.h> contains only macro definitions.
-      if test "$gl_cv_next_stdarg_h" = '""'; then
-        gl_cv_next_stdarg_h='"///usr/include/stdarg.h"'
-        NEXT_STDARG_H="$gl_cv_next_stdarg_h"
-      fi
-    else
-      dnl Provide a substitute in <config.h>, either __va_copy or as a simple
-      dnl assignment.
-      gl_CACHE_VAL_SILENT([gl_cv_func___va_copy], [
-        AC_COMPILE_IFELSE(
-          [AC_LANG_PROGRAM(
-             [[#include <stdarg.h>]],
-             [[
-#ifndef __va_copy
-error, bail out
-#endif
-             ]])],
-          [gl_cv_func___va_copy=yes],
-          [gl_cv_func___va_copy=no])])
-      if test $gl_cv_func___va_copy = yes; then
-        AC_DEFINE([va_copy], [__va_copy],
-          [Define as a macro for copying va_list variables.])
-      else
-        AH_VERBATIM([gl_VA_COPY], [/* A replacement for va_copy, if needed.  */
-#define gl_va_copy(a,b) ((a) = (b))])
-        AC_DEFINE([va_copy], [gl_va_copy],
-          [Define as a macro for copying va_list variables.])
-      fi
-    fi
-  fi
-  AC_SUBST([STDARG_H])
-  AM_CONDITIONAL([GL_GENERATE_STDARG_H], [test -n "$STDARG_H"])
-  AC_SUBST([NEXT_STDARG_H])
-])
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4
deleted file mode 100644
index 006ed52de5d..00000000000
--- a/m4/stdbool.m4
+++ /dev/null
@@ -1,100 +0,0 @@
-# Check for stdbool.h that conforms to C99.
-
-dnl Copyright (C) 2002-2006, 2009-2014 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-#serial 5
-
-# Prepare for substituting <stdbool.h> if it is not supported.
-
-AC_DEFUN([AM_STDBOOL_H],
-[
-  AC_REQUIRE([AC_CHECK_HEADER_STDBOOL])
-
-  # Define two additional variables used in the Makefile substitution.
-
-  if test "$ac_cv_header_stdbool_h" = yes; then
-    STDBOOL_H=''
-  else
-    STDBOOL_H='stdbool.h'
-  fi
-  AC_SUBST([STDBOOL_H])
-  AM_CONDITIONAL([GL_GENERATE_STDBOOL_H], [test -n "$STDBOOL_H"])
-
-  if test "$ac_cv_type__Bool" = yes; then
-    HAVE__BOOL=1
-  else
-    HAVE__BOOL=0
-  fi
-  AC_SUBST([HAVE__BOOL])
-])
-
-# AM_STDBOOL_H will be renamed to gl_STDBOOL_H in the future.
-AC_DEFUN([gl_STDBOOL_H], [AM_STDBOOL_H])
-
-# This version of the macro is needed in autoconf <= 2.68.
-
-AC_DEFUN([AC_CHECK_HEADER_STDBOOL],
-  [AC_CACHE_CHECK([for stdbool.h that conforms to C99],
-     [ac_cv_header_stdbool_h],
-     [AC_COMPILE_IFELSE(
-        [AC_LANG_PROGRAM(
-           [[
-             #include <stdbool.h>
-             #ifndef bool
-              "error: bool is not defined"
-             #endif
-             #ifndef false
-              "error: false is not defined"
-             #endif
-             #if false
-              "error: false is not 0"
-             #endif
-             #ifndef true
-              "error: true is not defined"
-             #endif
-             #if true != 1
-              "error: true is not 1"
-             #endif
-             #ifndef __bool_true_false_are_defined
-              "error: __bool_true_false_are_defined is not defined"
-             #endif
-
-             struct s { _Bool s: 1; _Bool t; } s;
-
-             char a[true == 1 ? 1 : -1];
-             char b[false == 0 ? 1 : -1];
-             char c[__bool_true_false_are_defined == 1 ? 1 : -1];
-             char d[(bool) 0.5 == true ? 1 : -1];
-             /* See body of main program for 'e'.  */
-             char f[(_Bool) 0.0 == false ? 1 : -1];
-             char g[true];
-             char h[sizeof (_Bool)];
-             char i[sizeof s.t];
-             enum { j = false, k = true, l = false * true, m = true * 256 };
-             /* The following fails for
-                HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */
-             _Bool n[m];
-             char o[sizeof n == m * sizeof n[0] ? 1 : -1];
-             char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
-             /* Catch a bug in an HP-UX C compiler.  See
-                http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
-                http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
-              */
-             _Bool q = true;
-             _Bool *pq = &q;
-           ]],
-           [[
-             bool e = &s;
-             *pq |= q;
-             *pq |= ! q;
-             /* Refer to every declared value, to avoid compiler optimizations.  */
-             return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
-                     + !m + !n + !o + !p + !q + !pq);
-           ]])],
-        [ac_cv_header_stdbool_h=yes],
-        [ac_cv_header_stdbool_h=no])])
-   AC_CHECK_TYPES([_Bool])
-])