-# gnulib-common.m4 serial 22
+# gnulib-common.m4 serial 29
dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_REQUIRE([gl_COMMON_BODY])
])
AC_DEFUN([gl_COMMON_BODY], [
+ AH_VERBATIM([_Noreturn],
+[/* The _Noreturn keyword of draft C1X. */
+#ifndef _Noreturn
+# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
+ || 0x5110 <= __SUNPRO_C)
+# define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= _MSC_VER
+# define _Noreturn __declspec (noreturn)
+# else
+# define _Noreturn
+# endif
+#endif
+])
AH_VERBATIM([isoc99_inline],
[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
is a misnomer outside of parameter lists. */
#define _UNUSED_PARAMETER_ _GL_UNUSED
+
+/* The __pure__ attribute was added in gcc 2.96. */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE /* empty */
+#endif
+
+/* The __const__ attribute was added in gcc 2.95. */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST /* empty */
+#endif
])
dnl Preparation for running test programs:
dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
# expands to a C preprocessor expression that evaluates to 1 or 0, depending
# whether a gnulib module that has been requested shall be considered present
# or not.
-AC_DEFUN([gl_MODULE_INDICATOR_CONDITION], [1])
+m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
# sets the shell variable that indicates the presence of the given module to
# a C preprocessor expression that will evaluate to 1.
AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
[
- GNULIB_[]m4_translit([[$1]],
- [abcdefghijklmnopqrstuvwxyz./-],
- [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=gl_MODULE_INDICATOR_CONDITION
+ gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
+ [GNULIB_[]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
+ [gl_MODULE_INDICATOR_CONDITION])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
+# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
+# The shell variable's value is a C preprocessor expression that evaluates
+# to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
+[
+ m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
+ [
+ dnl Simplify the expression VALUE || 1 to 1.
+ $1=1
+ ],
+ [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
+ [gl_MODULE_INDICATOR_CONDITION])])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
+# modifies the shell variable to include the given condition. The shell
+# variable's value is a C preprocessor expression that evaluates to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
+[
+ dnl Simplify the expression 1 || CONDITION to 1.
+ if test "$[]$1" != 1; then
+ dnl Simplify the expression 0 || CONDITION to CONDITION.
+ if test "$[]$1" = 0; then
+ $1=$2
+ else
+ $1="($[]$1 || $2)"
+ fi
+ fi
])
# gl_MODULE_INDICATOR([modulename])
[Define to 1 when the gnulib module $1 should be tested.])
])
+# gl_ASSERT_NO_GNULIB_POSIXCHECK
+# asserts that there will never be a need to #define GNULIB_POSIXCHECK.
+# and thereby enables an optimization of configure and config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
+[
+ dnl Override gl_WARN_ON_USE_PREPARE.
+ dnl But hide this definition from 'aclocal'.
+ AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
+])
+
# gl_ASSERT_NO_GNULIB_TESTS
# asserts that there will be no gnulib tests in the scope of the configure.ac
# and thereby enables an optimization of config.h.
[m4_define([AS_VAR_IF],
[AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])])
+# gl_PROG_AR_RANLIB
+# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
+AC_DEFUN([gl_PROG_AR_RANLIB],
+[
+ dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
+ dnl as "cc", and GCC as "gcc". They have different object file formats and
+ dnl library formats. In particular, the GNU binutils programs ar, ranlib
+ dnl produce libraries that work only with gcc, not with cc.
+ AC_REQUIRE([AC_PROG_CC])
+ AC_EGREP_CPP([Amsterdam],
+ [
+#ifdef __ACK__
+Amsterdam
+#endif
+ ],
+ [AR='cc -c.a'
+ ARFLAGS='-o'
+ RANLIB=':'
+ ],
+ [dnl Use the Automake-documented default values for AR and ARFLAGS.
+ AR='ar'
+ ARFLAGS='cru'
+ dnl Use the ranlib program if it is available.
+ AC_PROG_RANLIB
+ ])
+ AC_SUBST([AR])
+ AC_SUBST([ARFLAGS])
+])
+
# AC_PROG_MKDIR_P
# is a backport of autoconf-2.60's AC_PROG_MKDIR_P, with a fix
# for interoperability with automake-1.9.6 from autoconf-2.62.