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authorThomas White <taw@bitwiz.org.uk>2010-12-07 19:58:08 -0700
committerThomas White <taw@physics.org>2012-02-22 15:27:08 +0100
commit508de274d96794a194694cf75b9711d1b8882301 (patch)
treee64d398aa018c67786eac3e25d85892e92f53e41
parent37aa7fb6df90c0027e1589f7e15a84f527e5ffe0 (diff)
Add Gnulib m4 files
-rw-r--r--m4/.gitignore15
-rw-r--r--m4/00gnulib.m430
-rw-r--r--m4/extensions.m4118
-rw-r--r--m4/gnulib-common.m4214
-rw-r--r--m4/gnulib-comp.m4240
-rw-r--r--m4/gnulib-tool.m457
-rw-r--r--m4/include_next.m4217
-rw-r--r--m4/memchr.m488
-rw-r--r--m4/mmap-anon.m455
-rw-r--r--m4/onceonly.m491
-rw-r--r--m4/stddef_h.m445
-rw-r--r--m4/string_h.m4115
-rw-r--r--m4/strndup.m453
-rw-r--r--m4/strnlen.m432
-rw-r--r--m4/warn-on-use.m445
-rw-r--r--m4/wchar_t.m424
16 files changed, 1424 insertions, 15 deletions
diff --git a/m4/.gitignore b/m4/.gitignore
index 99e48762..e69de29b 100644
--- a/m4/.gitignore
+++ b/m4/.gitignore
@@ -1,15 +0,0 @@
-/00gnulib.m4
-/extensions.m4
-/gnulib-common.m4
-/gnulib-comp.m4
-/gnulib-tool.m4
-/include_next.m4
-/memchr.m4
-/mmap-anon.m4
-/onceonly.m4
-/stddef_h.m4
-/string_h.m4
-/strndup.m4
-/strnlen.m4
-/warn-on-use.m4
-/wchar_t.m4
diff --git a/m4/00gnulib.m4 b/m4/00gnulib.m4
new file mode 100644
index 00000000..301469b3
--- /dev/null
+++ b/m4/00gnulib.m4
@@ -0,0 +1,30 @@
+# 00gnulib.m4 serial 2
+dnl Copyright (C) 2009-2010 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 This file must be named something that sorts before all other
+dnl gnulib-provided .m4 files. It is needed until such time as we can
+dnl assume Autoconf 2.64, with its improved AC_DEFUN_ONCE semantics.
+
+# AC_DEFUN_ONCE([NAME], VALUE)
+# ----------------------------
+# Define NAME to expand to VALUE on the first use (whether by direct
+# expansion, or by AC_REQUIRE), and to nothing on all subsequent uses.
+# Avoid bugs in AC_REQUIRE in Autoconf 2.63 and earlier. This
+# definition is slower than the version in Autoconf 2.64, because it
+# can only use interfaces that existed since 2.59; but it achieves the
+# same effect. Quoting is necessary to avoid confusing Automake.
+m4_version_prereq([2.63.263], [],
+[m4_define([AC][_DEFUN_ONCE],
+ [AC][_DEFUN([$1],
+ [AC_REQUIRE([_gl_DEFUN_ONCE([$1])],
+ [m4_indir([_gl_DEFUN_ONCE([$1])])])])]dnl
+[AC][_DEFUN([_gl_DEFUN_ONCE([$1])], [$2])])])
+
+# gl_00GNULIB
+# -----------
+# Witness macro that this file has been included. Needed to force
+# Automake to include this file prior to all other gnulib .m4 files.
+AC_DEFUN([gl_00GNULIB])
diff --git a/m4/extensions.m4 b/m4/extensions.m4
new file mode 100644
index 00000000..7d9458a8
--- /dev/null
+++ b/m4/extensions.m4
@@ -0,0 +1,118 @@
+# serial 9 -*- Autoconf -*-
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003, 2006-2010 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from CVS
+# Autoconf. Perhaps we can remove this once we can assume Autoconf
+# 2.62 or later everywhere, but since CVS Autoconf mutates rapidly
+# enough in this area it's likely we'll need to redefine
+# AC_USE_SYSTEM_EXTENSIONS for quite some time.
+
+# If autoconf reports a warning
+# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+# but always AC_REQUIREd,
+# 2) to ensure that for each occurrence of
+# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+# or
+# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+# the corresponding gnulib module description has 'extensions' among
+# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+# invocation occurs in gl_EARLY, not in gl_INIT.
+
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+# Remember that #undef in AH_VERBATIM gets replaced with #define by
+# AC_DEFINE. The goal here is to define all known feature-enabling
+# macros, then, if reports of conflicts are made, disable macros that
+# cause problems on some platforms (such as __EXTENSIONS__).
+AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
+[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
+AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
+ AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
+ if test "$MINIX" = yes; then
+ AC_DEFINE([_POSIX_SOURCE], [1],
+ [Define to 1 if you need to in order for `stat' and other
+ things to work.])
+ AC_DEFINE([_POSIX_1_SOURCE], [2],
+ [Define to 2 if the system does not provide POSIX.1 features
+ except with this defined.])
+ AC_DEFINE([_MINIX], [1],
+ [Define to 1 if on MINIX.])
+ fi
+
+ dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500,
+ dnl regardless of whether the flags -Ae or _D_HPUX_SOURCE=1 are already
+ dnl provided.
+ case "$host_os" in
+ hpux*)
+ AC_DEFINE([_XOPEN_SOURCE], [500],
+ [Define to 500 only on HP-UX.])
+ ;;
+ esac
+
+ AH_VERBATIM([__EXTENSIONS__],
+[/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+])
+ AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+ [ac_cv_safe_to_define___extensions__],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+# define __EXTENSIONS__ 1
+ ]AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_define___extensions__=yes],
+ [ac_cv_safe_to_define___extensions__=no])])
+ test $ac_cv_safe_to_define___extensions__ = yes &&
+ AC_DEFINE([__EXTENSIONS__])
+ AC_DEFINE([_ALL_SOURCE])
+ AC_DEFINE([_GNU_SOURCE])
+ AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+ AC_DEFINE([_TANDEM_SOURCE])
+])# AC_USE_SYSTEM_EXTENSIONS
+
+# gl_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
+[
+ dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS.
+ dnl gnulib does not need it. But if it gets required by third-party macros
+ dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a
+ dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
+ dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE,
+ dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck.
+ AC_REQUIRE([AC_GNU_SOURCE])
+
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+])
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
new file mode 100644
index 00000000..d0c8b662
--- /dev/null
+++ b/m4/gnulib-common.m4
@@ -0,0 +1,214 @@
+# gnulib-common.m4 serial 21
+dnl Copyright (C) 2007-2010 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.
+
+# gl_COMMON
+# is expanded unconditionally through gnulib-tool magic.
+AC_DEFUN([gl_COMMON], [
+ dnl Use AC_REQUIRE here, so that the code is expanded once only.
+ AC_REQUIRE([gl_00GNULIB])
+ AC_REQUIRE([gl_COMMON_BODY])
+])
+AC_DEFUN([gl_COMMON_BODY], [
+ 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
+ earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+ __APPLE__ && __MACH__ test for MacOS X.
+ __APPLE_CC__ tests for the Apple compiler and its version.
+ __STDC_VERSION__ tests for the C99 mode. */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif])
+ AH_VERBATIM([unused_parameter],
+[/* Define as a marker that can be attached to declarations that might not
+ be used. This helps to reduce warnings, such as from
+ GCC -Wunused-parameter. */
+#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define _GL_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_UNUSED
+#endif
+/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
+ is a misnomer outside of parameter lists. */
+#define _UNUSED_PARAMETER_ _GL_UNUSED
+])
+ dnl Preparation for running test programs:
+ dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+ dnl to /dev/tty, so they can be redirected to log files. Such diagnostics
+ dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+ LIBC_FATAL_STDERR_=1
+ export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# 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])
+
+# 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([modulename])
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 0 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR],
+[
+ AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+ [gl_MODULE_INDICATOR_CONDITION],
+ [Define to a C preprocessor expression that evaluates to 1 or 0,
+ depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+ AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+ [Define to 1 when the gnulib module $1 should be tested.])
+])
+
+# Test whether <features.h> exists.
+# Set HAVE_FEATURES_H.
+AC_DEFUN([gl_FEATURES_H],
+[
+ AC_CHECK_HEADERS_ONCE([features.h])
+ if test $ac_cv_header_features_h = yes; then
+ HAVE_FEATURES_H=1
+ else
+ HAVE_FEATURES_H=0
+ fi
+ AC_SUBST([HAVE_FEATURES_H])
+])
+
+# m4_foreach_w
+# is a backport of autoconf-2.59c's m4_foreach_w.
+# Remove this macro when we can assume autoconf >= 2.60.
+m4_ifndef([m4_foreach_w],
+ [m4_define([m4_foreach_w],
+ [m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])
+
+# AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH])
+# ----------------------------------------------------
+# Backport of autoconf-2.63b's macro.
+# Remove this macro when we can assume autoconf >= 2.64.
+m4_ifndef([AS_VAR_IF],
+[m4_define([AS_VAR_IF],
+[AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])])
+
+# AC_PROG_MKDIR_P
+# is a backport of autoconf-2.60's AC_PROG_MKDIR_P, with a fix
+# for interoperability with automake-1.9.6 from autoconf-2.62.
+# Remove this macro when we can assume autoconf >= 2.62 or
+# autoconf >= 2.60 && automake >= 1.10.
+m4_ifdef([AC_PROG_MKDIR_P], [
+ dnl For automake-1.9.6 && autoconf < 2.62: Ensure MKDIR_P is AC_SUBSTed.
+ m4_define([AC_PROG_MKDIR_P],
+ m4_defn([AC_PROG_MKDIR_P])[
+ AC_SUBST([MKDIR_P])])], [
+ dnl For autoconf < 2.60: Backport of AC_PROG_MKDIR_P.
+ AC_DEFUN_ONCE([AC_PROG_MKDIR_P],
+ [AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
+ MKDIR_P='$(mkdir_p)'
+ AC_SUBST([MKDIR_P])])])
+
+# AC_C_RESTRICT
+# This definition overrides the AC_C_RESTRICT macro from autoconf 2.60..2.61,
+# so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++
+# works.
+# This definition can be removed once autoconf >= 2.62 can be assumed.
+m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.62]),[-1],[
+AC_DEFUN([AC_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
+ [ac_cv_c_restrict=no
+ # The order here caters to the fact that C++ does not require restrict.
+ for ac_kw in __restrict __restrict__ _Restrict restrict; do
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+ [[typedef int * int_ptr;
+ int foo (int_ptr $ac_kw ip) {
+ return ip[0];
+ }]],
+ [[int s[1];
+ int * $ac_kw t = s;
+ t[0] = 0;
+ return foo(t)]])],
+ [ac_cv_c_restrict=$ac_kw])
+ test "$ac_cv_c_restrict" != no && break
+ done
+ ])
+ AH_VERBATIM([restrict],
+[/* Define to the equivalent of the C99 'restrict' keyword, or to
+ nothing if this is not supported. Do not define if restrict is
+ supported directly. */
+#undef restrict
+/* Work around a bug in Sun C++: it does not support _Restrict, even
+ though the corresponding Sun C compiler does, which causes
+ "#define restrict _Restrict" in the previous line. Perhaps some future
+ version of Sun C++ will work with _Restrict; if so, it'll probably
+ define __RESTRICT, just as Sun C does. */
+#if defined __SUNPRO_CC && !defined __RESTRICT
+# define _Restrict
+#endif])
+ case $ac_cv_c_restrict in
+ restrict) ;;
+ no) AC_DEFINE([restrict], []) ;;
+ *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
+ esac
+])
+])
+
+# gl_BIGENDIAN
+# is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
+# Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
+# macros invoke AC_C_BIGENDIAN with arguments.
+AC_DEFUN([gl_BIGENDIAN],
+[
+ AC_C_BIGENDIAN
+])
+
+# gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
+# is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
+# output a spurious "(cached)" mark in the midst of other configure output.
+# This macro should be used instead of AC_CACHE_VAL when it is not surrounded
+# by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
+AC_DEFUN([gl_CACHE_VAL_SILENT],
+[
+ saved_as_echo_n="$as_echo_n"
+ as_echo_n=':'
+ AC_CACHE_VAL([$1], [$2])
+ as_echo_n="$saved_as_echo_n"
+])
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
new file mode 100644
index 00000000..032577bd
--- /dev/null
+++ b/m4/gnulib-comp.m4
@@ -0,0 +1,240 @@
+# DO NOT EDIT! GENERATED AUTOMATICALLY!
+# Copyright (C) 2002-2010 Free Software Foundation, Inc.
+#
+# This file is free software, distributed under the terms of the GNU
+# General Public License. As a special exception to the GNU General
+# Public License, this file may be distributed as part of a program
+# that contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the compiled summary of the specification in
+# gnulib-cache.m4. It lists the computed macro invocations that need
+# to be invoked from configure.ac.
+# In projects that use version control, this file can be treated like
+# other built files.
+
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Checks for programs", right after AC_PROG_CC, and certainly before
+# any checks for libraries, header files, types and library functions.
+AC_DEFUN([gl_EARLY],
+[
+ m4_pattern_forbid([^gl_[A-Z]])dnl the gnulib macro namespace
+ m4_pattern_allow([^gl_ES$])dnl a valid locale name
+ m4_pattern_allow([^gl_LIBOBJS$])dnl a variable
+ m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
+ AC_REQUIRE([AC_PROG_RANLIB])
+ # Code from module arg-nonnull:
+ # Code from module c++defs:
+ # Code from module extensions:
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+ # Code from module include_next:
+ # Code from module memchr:
+ # Code from module stddef:
+ # Code from module string:
+ # Code from module strndup:
+ # Code from module strnlen:
+ # Code from module warn-on-use:
+])
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Check for header files, types and library functions".
+AC_DEFUN([gl_INIT],
+[
+ AM_CONDITIONAL([GL_COND_LIBTOOL], [false])
+ gl_cond_libtool=false
+ gl_libdeps=
+ gl_ltlibdeps=
+ gl_m4_base='m4'
+ m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
+ m4_pushdef([gl_LIBSOURCES_LIST], [])
+ m4_pushdef([gl_LIBSOURCES_DIR], [])
+ gl_COMMON
+ gl_source_base='lib'
+ # Code from module arg-nonnull:
+ # Code from module c++defs:
+ # Code from module extensions:
+ # Code from module include_next:
+ # Code from module memchr:
+ gl_FUNC_MEMCHR
+ gl_STRING_MODULE_INDICATOR([memchr])
+ # Code from module stddef:
+ gl_STDDEF_H
+ # Code from module string:
+ gl_HEADER_STRING_H
+ # Code from module strndup:
+ gl_FUNC_STRNDUP
+ gl_STRING_MODULE_INDICATOR([strndup])
+ # Code from module strnlen:
+ gl_FUNC_STRNLEN
+ gl_STRING_MODULE_INDICATOR([strnlen])
+ # Code from module warn-on-use:
+ # Code from module dummy:
+ # End of code from modules
+ m4_ifval(gl_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gl_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([gl_LIBSOURCES_DIR])
+ m4_popdef([gl_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gl_libobjs=
+ gl_ltlibobjs=
+ if test -n "$gl_LIBOBJS"; then
+ # Remove the extension.
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gl_libobjs="$gl_libobjs $i.$ac_objext"
+ gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+ done
+ fi
+ AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
+ AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+ ])
+ gltests_libdeps=
+ gltests_ltlibdeps=
+ m4_pushdef([AC_LIBOBJ], m4_defn([gltests_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gltests_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gltests_LIBSOURCES]))
+ m4_pushdef([gltests_LIBSOURCES_LIST], [])
+ m4_pushdef([gltests_LIBSOURCES_DIR], [])
+ gl_COMMON
+ gl_source_base='tests'
+changequote(,)dnl
+ gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+ AC_SUBST([gltests_WITNESS])
+ gl_module_indicator_condition=$gltests_WITNESS
+ m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
+ m4_popdef([gl_MODULE_INDICATOR_CONDITION])
+ m4_ifval(gltests_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([gltests_LIBSOURCES_DIR])
+ m4_popdef([gltests_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gltests_libobjs=
+ gltests_ltlibobjs=
+ if test -n "$gltests_LIBOBJS"; then
+ # Remove the extension.
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gltests_libobjs="$gltests_libobjs $i.$ac_objext"
+ gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+ done
+ fi
+ AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
+ AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+ ])
+ LIBGNU_LIBDEPS="$gl_libdeps"
+ AC_SUBST([LIBGNU_LIBDEPS])
+ LIBGNU_LTLIBDEPS="$gl_ltlibdeps"
+ AC_SUBST([LIBGNU_LTLIBDEPS])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gl_LIBSOURCES([$1.c])])dnl
+ gl_LIBOBJS="$gl_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gl_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gl_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gl_LIBSOURCES_DIR], [lib])
+ m4_append([gl_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gltests_LIBSOURCES([$1.c])])dnl
+ gltests_LIBOBJS="$gltests_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gltests_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gltests_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gltests_LIBSOURCES_DIR], [tests])
+ m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# This macro records the list of files which have been installed by
+# gnulib-tool and may be removed by future gnulib-tool invocations.
+AC_DEFUN([gl_FILE_LIST], [
+ build-aux/arg-nonnull.h
+ build-aux/c++defs.h
+ build-aux/warn-on-use.h
+ lib/dummy.c
+ lib/memchr.c
+ lib/memchr.valgrind
+ lib/stddef.in.h
+ lib/string.in.h
+ lib/strndup.c
+ lib/strnlen.c
+ m4/00gnulib.m4
+ m4/extensions.m4
+ m4/gnulib-common.m4
+ m4/include_next.m4
+ m4/memchr.m4
+ m4/mmap-anon.m4
+ m4/onceonly.m4
+ m4/stddef_h.m4
+ m4/string_h.m4
+ m4/strndup.m4
+ m4/strnlen.m4
+ m4/warn-on-use.m4
+ m4/wchar_t.m4
+])
diff --git a/m4/gnulib-tool.m4 b/m4/gnulib-tool.m4
new file mode 100644
index 00000000..69e7733b
--- /dev/null
+++ b/m4/gnulib-tool.m4
@@ -0,0 +1,57 @@
+# gnulib-tool.m4 serial 2
+dnl Copyright (C) 2004-2005, 2009-2010 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 The following macros need not be invoked explicitly.
+dnl Invoking them does nothing except to declare default arguments
+dnl for "gnulib-tool --import".
+
+dnl Usage: gl_LOCAL_DIR([DIR])
+AC_DEFUN([gl_LOCAL_DIR], [])
+
+dnl Usage: gl_MODULES([module1 module2 ...])
+AC_DEFUN([gl_MODULES], [])
+
+dnl Usage: gl_AVOID([module1 module2 ...])
+AC_DEFUN([gl_AVOID], [])
+
+dnl Usage: gl_SOURCE_BASE([DIR])
+AC_DEFUN([gl_SOURCE_BASE], [])
+
+dnl Usage: gl_M4_BASE([DIR])
+AC_DEFUN([gl_M4_BASE], [])
+
+dnl Usage: gl_PO_BASE([DIR])
+AC_DEFUN([gl_PO_BASE], [])
+
+dnl Usage: gl_DOC_BASE([DIR])
+AC_DEFUN([gl_DOC_BASE], [])
+
+dnl Usage: gl_TESTS_BASE([DIR])
+AC_DEFUN([gl_TESTS_BASE], [])
+
+dnl Usage: gl_WITH_TESTS
+AC_DEFUN([gl_WITH_TESTS], [])
+
+dnl Usage: gl_LIB([LIBNAME])
+AC_DEFUN([gl_LIB], [])
+
+dnl Usage: gl_LGPL or gl_LGPL([VERSION])
+AC_DEFUN([gl_LGPL], [])
+
+dnl Usage: gl_MAKEFILE_NAME([FILENAME])
+AC_DEFUN([gl_MAKEFILE_NAME], [])
+
+dnl Usage: gl_LIBTOOL
+AC_DEFUN([gl_LIBTOOL], [])
+
+dnl Usage: gl_MACRO_PREFIX([PREFIX])
+AC_DEFUN([gl_MACRO_PREFIX], [])
+
+dnl Usage: gl_PO_DOMAIN([DOMAIN])
+AC_DEFUN([gl_PO_DOMAIN], [])
+
+dnl Usage: gl_VC_FILES([BOOLEAN])
+AC_DEFUN([gl_VC_FILES], [])
diff --git a/m4/include_next.m4 b/m4/include_next.m4
new file mode 100644
index 00000000..e37eb056
--- /dev/null
+++ b/m4/include_next.m4
@@ -0,0 +1,217 @@
+# include_next.m4 serial 16
+dnl Copyright (C) 2006-2010 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 Paul Eggert and Derek Price.
+
+dnl Sets INCLUDE_NEXT and PRAGMA_SYSTEM_HEADER.
+dnl
+dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to
+dnl 'include' otherwise.
+dnl
+dnl INCLUDE_NEXT_AS_FIRST_DIRECTIVE expands to 'include_next' if the compiler
+dnl supports it in the special case that it is the first include directive in
+dnl the given file, or to 'include' otherwise.
+dnl
+dnl PRAGMA_SYSTEM_HEADER can be used in files that contain #include_next,
+dnl so as to avoid GCC warnings when the gcc option -pedantic is used.
+dnl '#pragma GCC system_header' has the same effect as if the file was found
+dnl through the include search path specified with '-isystem' options (as
+dnl opposed to the search path specified with '-I' options). Namely, gcc
+dnl does not warn about some things, and on some systems (Solaris and Interix)
+dnl __STDC__ evaluates to 0 instead of to 1. The latter is an undesired side
+dnl effect; we are therefore careful to use 'defined __STDC__' or '1' instead
+dnl of plain '__STDC__'.
+dnl
+dnl PRAGMA_COLUMNS can be used in files that override system header files, so
+dnl as to avoid compilation errors on HP NonStop systems when the gnulib file
+dnl is included by a system header file that does a "#pragma COLUMNS 80" (which
+dnl has the effect of truncating the lines of that file and all files that it
+dnl includes to 80 columns) and the gnulib file has lines longer than 80
+dnl columns.
+
+AC_DEFUN([gl_INCLUDE_NEXT],
+[
+ AC_LANG_PREPROC_REQUIRE()
+ AC_CACHE_CHECK([whether the preprocessor supports include_next],
+ [gl_cv_have_include_next],
+ [rm -rf conftestd1a conftestd1b conftestd2
+ mkdir conftestd1a conftestd1b conftestd2
+ dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on
+ dnl AIX 6.1 support include_next when used as first preprocessor directive
+ dnl in a file, but not when preceded by another include directive. Check
+ dnl for this bug by including <stdio.h>.
+ dnl Additionally, with this same compiler, include_next is a no-op when
+ dnl used in a header file that was included by specifying its absolute
+ dnl file name. Despite these two bugs, include_next is used in the
+ dnl compiler's <math.h>. By virtue of the second bug, we need to use
+ dnl include_next as well in this case.
+ cat <<EOF > conftestd1a/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat <<EOF > conftestd1b/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include <stdio.h>
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat <<EOF > conftestd2/conftest.h
+#ifndef DEFINED_IN_CONFTESTD1
+#error "include_next test doesn't work"
+#endif
+#define DEFINED_IN_CONFTESTD2
+EOF
+ gl_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2"
+dnl We intentionally avoid using AC_LANG_SOURCE here.
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+ [gl_cv_have_include_next=yes],
+ [CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2"
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+ [gl_cv_have_include_next=buggy],
+ [gl_cv_have_include_next=no])
+ ])
+ CPPFLAGS="$gl_save_CPPFLAGS"
+ rm -rf conftestd1a conftestd1b conftestd2
+ ])
+ PRAGMA_SYSTEM_HEADER=
+ if test $gl_cv_have_include_next = yes; then
+ INCLUDE_NEXT=include_next
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ if test -n "$GCC"; then
+ PRAGMA_SYSTEM_HEADER='#pragma GCC system_header'
+ fi
+ else
+ if test $gl_cv_have_include_next = buggy; then
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ else
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include
+ fi
+ fi
+ AC_SUBST([INCLUDE_NEXT])
+ AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE])
+ AC_SUBST([PRAGMA_SYSTEM_HEADER])
+ AC_CACHE_CHECK([whether system header files limit the line length],
+ [gl_cv_pragma_columns],
+ [dnl HP NonStop systems, which define __TANDEM, have this misfeature.
+ AC_EGREP_CPP([choke me],
+ [
+#ifdef __TANDEM
+choke me
+#endif
+ ],
+ [gl_cv_pragma_columns=yes],
+ [gl_cv_pragma_columns=no])
+ ])
+ if test $gl_cv_pragma_columns = yes; then
+ PRAGMA_COLUMNS="#pragma COLUMNS 10000"
+ else
+ PRAGMA_COLUMNS=
+ fi
+ AC_SUBST([PRAGMA_COLUMNS])
+])
+
+# gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------------
+# For each arg foo.h, if #include_next works, define NEXT_FOO_H to be
+# '<foo.h>'; otherwise define it to be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# Also, if #include_next works as first preprocessing directive in a file,
+# define NEXT_AS_FIRST_DIRECTIVE_FOO_H to be '<foo.h>'; otherwise define it to
+# be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# That way, a header file with the following line:
+# #@INCLUDE_NEXT@ @NEXT_FOO_H@
+# or
+# #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+# behaves (after sed substitution) as if it contained
+# #include_next <foo.h>
+# even if the compiler does not support include_next.
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+AC_DEFUN([gl_CHECK_NEXT_HEADERS],
+[
+ AC_REQUIRE([gl_INCLUDE_NEXT])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_CHECK_HEADERS_ONCE([$1])
+
+ m4_foreach_w([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_next_header],
+ [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+ if test $gl_cv_have_include_next = yes; then
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ else
+ AC_CACHE_CHECK(
+ [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+ m4_defn([gl_next_header]),
+ [AS_VAR_PUSHDEF([gl_header_exists],
+ [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
+ if test AS_VAR_GET(gl_header_exists) = yes; then
+ AC_LANG_CONFTEST(
+ [AC_LANG_SOURCE(
+ [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
+ )])
+ dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+ dnl that contain only a #include of other header files and no
+ dnl non-comment tokens of their own. This leads to a failure to
+ dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+ dnl and others. The workaround is to force preservation of comments
+ dnl through option -C. This ensures all necessary #line directives
+ dnl are present. GCC supports option -C as well.
+ case "$host_os" in
+ aix*) gl_absname_cpp="$ac_cpp -C" ;;
+ *) gl_absname_cpp="$ac_cpp" ;;
+ esac
+ dnl eval is necessary to expand gl_absname_cpp.
+ dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+ dnl so use subshell.
+ AS_VAR_SET([gl_next_header],
+ ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+ sed -n '\#/]m4_defn([gl_HEADER_NAME])[#{
+ s#.*"\(.*/]m4_defn([gl_HEADER_NAME])[\)".*#\1#
+ s#^/[^/]#//&#
+ p
+ q
+ }'`'"'])
+ else
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ fi
+ AS_VAR_POPDEF([gl_header_exists])])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])),
+ [AS_VAR_GET([gl_next_header])])
+ if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+ gl_next_as_first_directive='<'gl_HEADER_NAME'>'
+ else
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+ gl_next_as_first_directive=AS_VAR_GET([gl_next_header])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_AS_FIRST_DIRECTIVE_]m4_defn([gl_HEADER_NAME])),
+ [$gl_next_as_first_directive])
+ AS_VAR_POPDEF([gl_next_header])])
+])
+
+# Autoconf 2.68 added warnings for our use of AC_COMPILE_IFELSE;
+# this fallback is safe for all earlier autoconf versions.
+m4_define_default([AC_LANG_DEFINES_PROVIDED])
diff --git a/m4/memchr.m4 b/m4/memchr.m4
new file mode 100644
index 00000000..46db9fb6
--- /dev/null
+++ b/m4/memchr.m4
@@ -0,0 +1,88 @@
+# memchr.m4 serial 10
+dnl Copyright (C) 2002-2004, 2009-2010 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.
+
+AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
+[
+ dnl Check for prerequisites for memory fence checks.
+ gl_FUNC_MMAP_ANON
+ AC_CHECK_HEADERS_ONCE([sys/mman.h])
+ AC_CHECK_FUNCS_ONCE([mprotect])
+
+ dnl These days, we assume memchr is present. But just in case...
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ AC_CHECK_FUNCS_ONCE([memchr])
+ if test $ac_cv_func_memchr = yes; then
+ # Detect platform-specific bugs in some versions of glibc:
+ # memchr should not dereference anything with length 0
+ # http://bugzilla.redhat.com/499689
+ # memchr should not dereference overestimated length after a match
+ # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737
+ # http://sourceware.org/bugzilla/show_bug.cgi?id=10162
+ # Assume that memchr works on platforms that lack mprotect.
+ AC_CACHE_CHECK([whether memchr works], [gl_cv_func_memchr_works],
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <string.h>
+#if HAVE_SYS_MMAN_H
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+# ifndef MAP_FILE
+# define MAP_FILE 0
+# endif
+#endif
+]], [[
+ int result = 0;
+ char *fence = NULL;
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# if HAVE_MAP_ANONYMOUS
+ const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+ const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+ const int flags = MAP_FILE | MAP_PRIVATE;
+ int fd = open ("/dev/zero", O_RDONLY, 0666);
+ if (fd >= 0)
+# endif
+ {
+ int pagesize = getpagesize ();
+ char *two_pages =
+ (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+ flags, fd, 0);
+ if (two_pages != (char *)(-1)
+ && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+ fence = two_pages + pagesize;
+ }
+#endif
+ if (fence)
+ {
+ if (memchr (fence, 0, 0))
+ result |= 1;
+ strcpy (fence - 9, "12345678");
+ if (memchr (fence - 9, 0, 79) != fence - 1)
+ result |= 2;
+ if (memchr (fence - 1, 0, 3) != fence - 1)
+ result |= 4;
+ }
+ return result;
+]])], [gl_cv_func_memchr_works=yes], [gl_cv_func_memchr_works=no],
+ [dnl Be pessimistic for now.
+ gl_cv_func_memchr_works="guessing no"])])
+ if test "$gl_cv_func_memchr_works" != yes; then
+ REPLACE_MEMCHR=1
+ fi
+ else
+ HAVE_MEMCHR=0
+ fi
+ if test $HAVE_MEMCHR = 0 || test $REPLACE_MEMCHR = 1; then
+ AC_LIBOBJ([memchr])
+ gl_PREREQ_MEMCHR
+ fi
+])
+
+# Prerequisites of lib/memchr.c.
+AC_DEFUN([gl_PREREQ_MEMCHR], [
+ AC_CHECK_HEADERS([bp-sym.h])
+])
diff --git a/m4/mmap-anon.m4 b/m4/mmap-anon.m4
new file mode 100644
index 00000000..e20fc3c6
--- /dev/null
+++ b/m4/mmap-anon.m4
@@ -0,0 +1,55 @@
+# mmap-anon.m4 serial 9
+dnl Copyright (C) 2005, 2007, 2009-2010 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.
+
+# Detect how mmap can be used to create anonymous (not file-backed) memory
+# mappings.
+# - On Linux, AIX, OSF/1, Solaris, Cygwin, Interix, Haiku, both MAP_ANONYMOUS
+# and MAP_ANON exist and have the same value.
+# - On HP-UX, only MAP_ANONYMOUS exists.
+# - On MacOS X, FreeBSD, NetBSD, OpenBSD, only MAP_ANON exists.
+# - On IRIX, neither exists, and a file descriptor opened to /dev/zero must be
+# used.
+
+AC_DEFUN([gl_FUNC_MMAP_ANON],
+[
+ dnl Persuade glibc <sys/mman.h> to define MAP_ANONYMOUS.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it
+ # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is
+ # irrelevant for anonymous mappings.
+ AC_CHECK_FUNC([mmap], [gl_have_mmap=yes], [gl_have_mmap=no])
+
+ # Try to allow MAP_ANONYMOUS.
+ gl_have_mmap_anonymous=no
+ if test $gl_have_mmap = yes; then
+ AC_MSG_CHECKING([for MAP_ANONYMOUS])
+ AC_EGREP_CPP([I cant identify this map.], [
+#include <sys/mman.h>
+#ifdef MAP_ANONYMOUS
+ I cant identify this map.
+#endif
+],
+ [gl_have_mmap_anonymous=yes])
+ if test $gl_have_mmap_anonymous != yes; then
+ AC_EGREP_CPP([I cant identify this map.], [
+#include <sys/mman.h>
+#ifdef MAP_ANON
+ I cant identify this map.
+#endif
+],
+ [AC_DEFINE([MAP_ANONYMOUS], [MAP_ANON],
+ [Define to a substitute value for mmap()'s MAP_ANONYMOUS flag.])
+ gl_have_mmap_anonymous=yes])
+ fi
+ AC_MSG_RESULT([$gl_have_mmap_anonymous])
+ if test $gl_have_mmap_anonymous = yes; then
+ AC_DEFINE([HAVE_MAP_ANONYMOUS], [1],
+ [Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
+ config.h and <sys/mman.h>.])
+ fi
+ fi
+])
diff --git a/m4/onceonly.m4 b/m4/onceonly.m4
new file mode 100644
index 00000000..6a9c87b7
--- /dev/null
+++ b/m4/onceonly.m4
@@ -0,0 +1,91 @@
+# onceonly.m4 serial 7
+dnl Copyright (C) 2002-2003, 2005-2006, 2008-2010 Free Software Foundation,
+dnl Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl This file defines some "once only" variants of standard autoconf macros.
+dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS
+dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS
+dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS
+dnl AC_REQUIRE([AC_FUNC_STRCOLL]) like AC_FUNC_STRCOLL
+dnl The advantage is that the check for each of the headers/functions/decls
+dnl will be put only once into the 'configure' file. It keeps the size of
+dnl the 'configure' file down, and avoids redundant output when 'configure'
+dnl is run.
+dnl The drawback is that the checks cannot be conditionalized. If you write
+dnl if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi
+dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to
+dnl empty, and the check will be inserted before the body of the AC_DEFUNed
+dnl function.
+
+dnl The original code implemented AC_CHECK_HEADERS_ONCE and AC_CHECK_FUNCS_ONCE
+dnl in terms of AC_DEFUN and AC_REQUIRE. This implementation uses diversions to
+dnl named sections DEFAULTS and INIT_PREPARE in order to check all requested
+dnl headers at once, thus reducing the size of 'configure'. It is known to work
+dnl with autoconf 2.57..2.62 at least . The size reduction is ca. 9%.
+
+dnl Autoconf version 2.59 plus gnulib is required; this file is not needed
+dnl with Autoconf 2.60 or greater. But note that autoconf's implementation of
+dnl AC_CHECK_DECLS_ONCE expects a comma-separated list of symbols as first
+dnl argument!
+AC_PREREQ([2.59])
+
+# AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of
+# AC_CHECK_HEADERS(HEADER1 HEADER2 ...).
+AC_DEFUN([AC_CHECK_HEADERS_ONCE], [
+ :
+ m4_foreach_w([gl_HEADER_NAME], [$1], [
+ AC_DEFUN([gl_CHECK_HEADER_]m4_quote(m4_translit(gl_HEADER_NAME,
+ [./-], [___])), [
+ m4_divert_text([INIT_PREPARE],
+ [gl_header_list="$gl_header_list gl_HEADER_NAME"])
+ gl_HEADERS_EXPANSION
+ AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_HEADER_NAME])),
+ [Define to 1 if you have the <]m4_defn([gl_HEADER_NAME])[> header file.])
+ ])
+ AC_REQUIRE([gl_CHECK_HEADER_]m4_quote(m4_translit(gl_HEADER_NAME,
+ [./-], [___])))
+ ])
+])
+m4_define([gl_HEADERS_EXPANSION], [
+ m4_divert_text([DEFAULTS], [gl_header_list=])
+ AC_CHECK_HEADERS([$gl_header_list])
+ m4_define([gl_HEADERS_EXPANSION], [])
+])
+
+# AC_CHECK_FUNCS_ONCE(FUNC1 FUNC2 ...) is a once-only variant of
+# AC_CHECK_FUNCS(FUNC1 FUNC2 ...).
+AC_DEFUN([AC_CHECK_FUNCS_ONCE], [
+ :
+ m4_foreach_w([gl_FUNC_NAME], [$1], [
+ AC_DEFUN([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]), [
+ m4_divert_text([INIT_PREPARE],
+ [gl_func_list="$gl_func_list gl_FUNC_NAME"])
+ gl_FUNCS_EXPANSION
+ AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_FUNC_NAME])),
+ [Define to 1 if you have the `]m4_defn([gl_FUNC_NAME])[' function.])
+ ])
+ AC_REQUIRE([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]))
+ ])
+])
+m4_define([gl_FUNCS_EXPANSION], [
+ m4_divert_text([DEFAULTS], [gl_func_list=])
+ AC_CHECK_FUNCS([$gl_func_list])
+ m4_define([gl_FUNCS_EXPANSION], [])
+])
+
+# AC_CHECK_DECLS_ONCE(DECL1 DECL2 ...) is a once-only variant of
+# AC_CHECK_DECLS(DECL1, DECL2, ...).
+AC_DEFUN([AC_CHECK_DECLS_ONCE], [
+ :
+ m4_foreach_w([gl_DECL_NAME], [$1], [
+ AC_DEFUN([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]), [
+ AC_CHECK_DECLS(m4_defn([gl_DECL_NAME]))
+ ])
+ AC_REQUIRE([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]))
+ ])
+])
diff --git a/m4/stddef_h.m4 b/m4/stddef_h.m4
new file mode 100644
index 00000000..c3ae5694
--- /dev/null
+++ b/m4/stddef_h.m4
@@ -0,0 +1,45 @@
+dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
+# stddef_h.m4 serial 2
+dnl Copyright (C) 2009, 2010 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.
+
+AC_DEFUN([gl_STDDEF_H],
+[
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+ if test $gt_cv_c_wchar_t = no; then
+ HAVE_WCHAR_T=0
+ STDDEF_H=stddef.h
+ fi
+ AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
+ [gl_cv_decl_null_works],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
+ int test[2 * (sizeof NULL == sizeof (void *)) -1];
+]])],
+ [gl_cv_decl_null_works=yes],
+ [gl_cv_decl_null_works=no])])
+ if test $gl_cv_decl_null_works = no; then
+ REPLACE_NULL=1
+ STDDEF_H=stddef.h
+ fi
+ if test -n "$STDDEF_H"; then
+ gl_CHECK_NEXT_HEADERS([stddef.h])
+ fi
+])
+
+AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+AC_DEFUN([gl_STDDEF_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
+ HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
+ STDDEF_H=''; AC_SUBST([STDDEF_H])
+])
diff --git a/m4/string_h.m4 b/m4/string_h.m4
new file mode 100644
index 00000000..5844b2d6
--- /dev/null
+++ b/m4/string_h.m4
@@ -0,0 +1,115 @@
+# Configure a GNU-like replacement for <string.h>.
+
+# Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 18
+
+# Written by Paul Eggert.
+
+AC_DEFUN([gl_HEADER_STRING_H],
+[
+ dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+ dnl once only, before all statements that occur in other macros.
+ AC_REQUIRE([gl_HEADER_STRING_H_BODY])
+])
+
+AC_DEFUN([gl_HEADER_STRING_H_BODY],
+[
+ AC_REQUIRE([AC_C_RESTRICT])
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ gl_CHECK_NEXT_HEADERS([string.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, and which is not
+ dnl guaranteed by C89.
+ gl_WARN_ON_USE_PREPARE([[#include <string.h>
+ ]],
+ [memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup
+ strncat strndup strnlen strpbrk strsep strcasestr strtok_r strerror_r
+ strsignal strverscmp])
+])
+
+AC_DEFUN([gl_STRING_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
+[
+ GNULIB_MEMCHR=0; AC_SUBST([GNULIB_MEMCHR])
+ GNULIB_MEMMEM=0; AC_SUBST([GNULIB_MEMMEM])
+ GNULIB_MEMPCPY=0; AC_SUBST([GNULIB_MEMPCPY])
+ GNULIB_MEMRCHR=0; AC_SUBST([GNULIB_MEMRCHR])
+ GNULIB_RAWMEMCHR=0; AC_SUBST([GNULIB_RAWMEMCHR])
+ GNULIB_STPCPY=0; AC_SUBST([GNULIB_STPCPY])
+ GNULIB_STPNCPY=0; AC_SUBST([GNULIB_STPNCPY])
+ GNULIB_STRCHRNUL=0; AC_SUBST([GNULIB_STRCHRNUL])
+ GNULIB_STRDUP=0; AC_SUBST([GNULIB_STRDUP])
+ GNULIB_STRNCAT=0; AC_SUBST([GNULIB_STRNCAT])
+ GNULIB_STRNDUP=0; AC_SUBST([GNULIB_STRNDUP])
+ GNULIB_STRNLEN=0; AC_SUBST([GNULIB_STRNLEN])
+ GNULIB_STRPBRK=0; AC_SUBST([GNULIB_STRPBRK])
+ GNULIB_STRSEP=0; AC_SUBST([GNULIB_STRSEP])
+ GNULIB_STRSTR=0; AC_SUBST([GNULIB_STRSTR])
+ GNULIB_STRCASESTR=0; AC_SUBST([GNULIB_STRCASESTR])
+ GNULIB_STRTOK_R=0; AC_SUBST([GNULIB_STRTOK_R])
+ GNULIB_MBSLEN=0; AC_SUBST([GNULIB_MBSLEN])
+ GNULIB_MBSNLEN=0; AC_SUBST([GNULIB_MBSNLEN])
+ GNULIB_MBSCHR=0; AC_SUBST([GNULIB_MBSCHR])
+ GNULIB_MBSRCHR=0; AC_SUBST([GNULIB_MBSRCHR])
+ GNULIB_MBSSTR=0; AC_SUBST([GNULIB_MBSSTR])
+ GNULIB_MBSCASECMP=0; AC_SUBST([GNULIB_MBSCASECMP])
+ GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP])
+ GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP])
+ GNULIB_MBSCASESTR=0; AC_SUBST([GNULIB_MBSCASESTR])
+ GNULIB_MBSCSPN=0; AC_SUBST([GNULIB_MBSCSPN])
+ GNULIB_MBSPBRK=0; AC_SUBST([GNULIB_MBSPBRK])
+ GNULIB_MBSSPN=0; AC_SUBST([GNULIB_MBSSPN])
+ GNULIB_MBSSEP=0; AC_SUBST([GNULIB_MBSSEP])
+ GNULIB_MBSTOK_R=0; AC_SUBST([GNULIB_MBSTOK_R])
+ GNULIB_STRERROR=0; AC_SUBST([GNULIB_STRERROR])
+ GNULIB_STRERROR_R=0; AC_SUBST([GNULIB_STRERROR_R])
+ GNULIB_STRSIGNAL=0; AC_SUBST([GNULIB_STRSIGNAL])
+ GNULIB_STRVERSCMP=0; AC_SUBST([GNULIB_STRVERSCMP])
+ HAVE_MBSLEN=0; AC_SUBST([HAVE_MBSLEN])
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_MEMCHR=1; AC_SUBST([HAVE_MEMCHR])
+ HAVE_DECL_MEMMEM=1; AC_SUBST([HAVE_DECL_MEMMEM])
+ HAVE_MEMPCPY=1; AC_SUBST([HAVE_MEMPCPY])
+ HAVE_DECL_MEMRCHR=1; AC_SUBST([HAVE_DECL_MEMRCHR])
+ HAVE_RAWMEMCHR=1; AC_SUBST([HAVE_RAWMEMCHR])
+ HAVE_STPCPY=1; AC_SUBST([HAVE_STPCPY])
+ HAVE_STPNCPY=1; AC_SUBST([HAVE_STPNCPY])
+ HAVE_STRCHRNUL=1; AC_SUBST([HAVE_STRCHRNUL])
+ HAVE_DECL_STRDUP=1; AC_SUBST([HAVE_DECL_STRDUP])
+ HAVE_DECL_STRNDUP=1; AC_SUBST([HAVE_DECL_STRNDUP])
+ HAVE_DECL_STRNLEN=1; AC_SUBST([HAVE_DECL_STRNLEN])
+ HAVE_STRPBRK=1; AC_SUBST([HAVE_STRPBRK])
+ HAVE_STRSEP=1; AC_SUBST([HAVE_STRSEP])
+ HAVE_STRCASESTR=1; AC_SUBST([HAVE_STRCASESTR])
+ HAVE_DECL_STRTOK_R=1; AC_SUBST([HAVE_DECL_STRTOK_R])
+ HAVE_DECL_STRERROR_R=1; AC_SUBST([HAVE_DECL_STRERROR_R])
+ HAVE_DECL_STRSIGNAL=1; AC_SUBST([HAVE_DECL_STRSIGNAL])
+ HAVE_STRVERSCMP=1; AC_SUBST([HAVE_STRVERSCMP])
+ REPLACE_MEMCHR=0; AC_SUBST([REPLACE_MEMCHR])
+ REPLACE_MEMMEM=0; AC_SUBST([REPLACE_MEMMEM])
+ REPLACE_STPNCPY=0; AC_SUBST([REPLACE_STPNCPY])
+ REPLACE_STRDUP=0; AC_SUBST([REPLACE_STRDUP])
+ REPLACE_STRSTR=0; AC_SUBST([REPLACE_STRSTR])
+ REPLACE_STRCASESTR=0; AC_SUBST([REPLACE_STRCASESTR])
+ REPLACE_STRERROR=0; AC_SUBST([REPLACE_STRERROR])
+ REPLACE_STRERROR_R=0; AC_SUBST([REPLACE_STRERROR_R])
+ REPLACE_STRNCAT=0; AC_SUBST([REPLACE_STRNCAT])
+ REPLACE_STRNDUP=0; AC_SUBST([REPLACE_STRNDUP])
+ REPLACE_STRNLEN=0; AC_SUBST([REPLACE_STRNLEN])
+ REPLACE_STRSIGNAL=0; AC_SUBST([REPLACE_STRSIGNAL])
+ REPLACE_STRTOK_R=0; AC_SUBST([REPLACE_STRTOK_R])
+ UNDEFINE_STRTOK_R=0; AC_SUBST([UNDEFINE_STRTOK_R])
+])
diff --git a/m4/strndup.m4 b/m4/strndup.m4
new file mode 100644
index 00000000..b3567d89
--- /dev/null
+++ b/m4/strndup.m4
@@ -0,0 +1,53 @@
+# strndup.m4 serial 18
+dnl Copyright (C) 2002-2003, 2005-2010 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.
+
+AC_DEFUN([gl_FUNC_STRNDUP],
+[
+ dnl Persuade glibc <string.h> to declare strndup().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ AC_CHECK_DECLS_ONCE([strndup])
+ AC_CHECK_FUNCS_ONCE([strndup])
+ if test $ac_cv_have_decl_strndup = no; then
+ HAVE_DECL_STRNDUP=0
+ fi
+
+ if test $ac_cv_func_strndup = yes; then
+ # AIX 4.3.3, AIX 5.1 have a function that fails to add the terminating '\0'.
+ AC_CACHE_CHECK([for working strndup], [gl_cv_func_strndup_works],
+ [AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[#include <string.h>
+ #include <stdlib.h>]], [[
+#ifndef HAVE_DECL_STRNDUP
+ extern char *strndup (const char *, size_t);
+#endif
+ char *s;
+ s = strndup ("some longer string", 15);
+ free (s);
+ s = strndup ("shorter string", 13);
+ return s[13] != '\0';]])],
+ [gl_cv_func_strndup_works=yes],
+ [gl_cv_func_strndup_works=no],
+ [
+changequote(,)dnl
+ case $host_os in
+ aix | aix[3-6]*) gl_cv_func_strndup_works="guessing no";;
+ *) gl_cv_func_strndup_works="guessing yes";;
+ esac
+changequote([,])dnl
+ ])])
+ case $gl_cv_func_strndup_works in
+ *no)
+ REPLACE_STRNDUP=1
+ AC_LIBOBJ([strndup])
+ ;;
+ esac
+ else
+ AC_LIBOBJ([strndup])
+ fi
+])
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
new file mode 100644
index 00000000..52bb838f
--- /dev/null
+++ b/m4/strnlen.m4
@@ -0,0 +1,32 @@
+# strnlen.m4 serial 12
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
+dnl 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.
+
+AC_DEFUN([gl_FUNC_STRNLEN],
+[
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+
+ dnl Persuade glibc <string.h> to declare strnlen().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_CHECK_DECLS_ONCE([strnlen])
+ if test $ac_cv_have_decl_strnlen = no; then
+ HAVE_DECL_STRNLEN=0
+ else
+ AC_FUNC_STRNLEN
+ dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).
+ if test $ac_cv_func_strnlen_working = no; then
+ REPLACE_STRNLEN=1
+ fi
+ fi
+ if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then
+ AC_LIBOBJ([strnlen])
+ gl_PREREQ_STRNLEN
+ fi
+])
+
+# Prerequisites of lib/strnlen.c.
+AC_DEFUN([gl_PREREQ_STRNLEN], [:])
diff --git a/m4/warn-on-use.m4 b/m4/warn-on-use.m4
new file mode 100644
index 00000000..42daae87
--- /dev/null
+++ b/m4/warn-on-use.m4
@@ -0,0 +1,45 @@
+# warn-on-use.m4 serial 2
+dnl Copyright (C) 2010 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.
+
+# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
+# ---------------------------------------
+# For each whitespace-separated element in the list of NAMES, define
+# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
+# even after being undefined as a macro.
+#
+# See warn-on-use.h for some hints on how to poison function names, as
+# well as ideas on poisoning global variables and macros. NAMES may
+# include global variables, but remember that only functions work with
+# _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single
+# header, but if the replacement header pulls in other headers because
+# some systems declare functions in the wrong header, then INCLUDES
+# should do likewise.
+#
+# If you assume C89, then it is generally safe to assume declarations
+# for functions declared in that standard (such as gets) without
+# needing gl_WARN_ON_USE_PREPARE.
+AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+[
+ m4_foreach_w([gl_decl], [$2],
+ [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
+ [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
+ undefining macros.])])dnl
+ for gl_func in m4_flatten([$2]); do
+ AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
+ AC_CACHE_CHECK([whether $gl_func is declared without a macro],
+ gl_Symbol,
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
+[@%:@undef $gl_func
+ (void) $gl_func;])],
+ [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
+ AS_VAR_IF(gl_Symbol, [yes],
+ [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
+ dnl shortcut - if the raw declaration exists, then set a cache
+ dnl variable to allow skipping any later AC_CHECK_DECL efforts
+ eval ac_cv_have_decl_$gl_func=yes])
+ AS_VAR_POPDEF([gl_Symbol])dnl
+ done
+])
diff --git a/m4/wchar_t.m4 b/m4/wchar_t.m4
new file mode 100644
index 00000000..a133e6ad
--- /dev/null
+++ b/m4/wchar_t.m4
@@ -0,0 +1,24 @@
+# wchar_t.m4 serial 4 (gettext-0.18.2)
+dnl Copyright (C) 2002-2003, 2008-2010 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 Test whether <stddef.h> has the 'wchar_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WCHAR_T],
+[
+ AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <stddef.h>
+ wchar_t foo = (wchar_t)'\0';]],
+ [[]])],
+ [gt_cv_c_wchar_t=yes],
+ [gt_cv_c_wchar_t=no])])
+ if test $gt_cv_c_wchar_t = yes; then
+ AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
+ fi
+])