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AC_LANG_PROGRAM underquoting
|
From: |
Bruno Haible |
|
Subject: |
AC_LANG_PROGRAM underquoting |
|
Date: |
Sun, 13 Apr 2008 14:38:25 +0200 |
|
User-agent: |
KMail/1.5.4 |
Hi,
Many uses of AC_LANG_PROGRAM doubly quote their arguments; correct. But many
don't and therefore incite to write buggy autoconf macros.
The example in the autoconf macro shows doubly quoted arguments.
Also, people who write
AC_LANG_PROGRAM([#include <stdio.h>], ...)
are probably not aware that the "include <stdio.h>" is considered as an
m4 comment(!). (Up until a few weeks ago I didn't even know what an m4 comment
is.)
Testcase:
==================== configure.ac ========================
AC_INIT
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include [] <sys/types.h>
const char hw1 [] = "Hello, World\n";]
[[const char hw2 [] = "Hello, World\n";]],
[[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])],
[gl_cv_header_sys_socket_h_shut=yes],
[gl_cv_header_sys_socket_h_shut=no])
AC_OUTPUT
==========================================================
yields the following C program:
----------------------------------------------------------
#include [] <sys/types.h>
const char hw1 = "Hello, World\n";
const char hw2 [] = "Hello, World\n";
int
main ()
{
int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
;
return 0;
}
----------------------------------------------------------
It is certainly surprising that the [] after #include is
preserved but the [] after hw1 is macroexpanded and dropped!
Here is a proposed patch to fix this in gnulib macros. Objections?
2008-04-13 Bruno Haible <address@hidden>
* m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Fix underquoting of
AC_LANG_PROGRAM argument.
* m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Likewise.
* m4/gethrxtime.m4 (gl_ARITHMETIC_HRTIME_T): Likewise.
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Likewise.
* m4/inttypes.m4 (gl_INTTYPES_H): Likewise.
* m4/math_h.m4 (gl_MATH_H): Likewise.
* m4/mbstate_t.m4 (AC_TYPE_MBSTATE_T): Likewise.
* m4/memmem.m4 (gl_FUNC_MEMMEM): Likewise.
* m4/netinet_in_h.m4 (gl_HEADER_NETINET_IN): Likewise.
* m4/physmem.m4 (gl_SYS__SYSTEM_CONFIGURATION): Likewise.
* m4/putenv.m4 (gl_FUNC_PUTENV): Likewise.
* m4/regex.m4 (gl_REGEX): Likewise.
* m4/stdint.m4 (gl_INTEGER_TYPE_SUFFIX): Likewise.
* m4/stdio_h.m4 (gl_STDIN_LARGE_OFFSET): Likewise.
* m4/strcasestr.m4 (gl_FUNC_STRCASESTR): Likewise.
* m4/strerror.m4 (gl_FUNC_STRERROR_SEPARATE): Likewise.
* m4/strndup.m4 (gl_FUNC_STRNDUP): Likewise.
* m4/strstr.m4 (gl_FUNC_STRSTR): Likewise.
* m4/sys_select_h.m4 (gl_HEADER_SYS_SELECT): Likewise.
* m4/sys_socket_h.m4 (gl_HEADER_SYS_SOCKET): Likewise.
--- m4/calloc.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/calloc.m4 2008-04-13 13:53:33.000000000 +0200
@@ -1,6 +1,6 @@
-# calloc.m4 serial 7
+# calloc.m4 serial 8
-# Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2004-2008 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.
@@ -19,7 +19,7 @@
[AC_REQUIRE([AC_TYPE_SIZE_T])dnl
AC_CACHE_CHECK([for GNU libc compatible calloc], ac_cv_func_calloc_0_nonnull,
[AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
- [exit (!calloc (0, 0) || calloc ((size_t) -1 / 8 + 1, 8));])],
+ [[exit (!calloc (0, 0) || calloc ((size_t) -1 / 8 + 1,
8));]])],
[ac_cv_func_calloc_0_nonnull=yes],
[ac_cv_func_calloc_0_nonnull=no],
[ac_cv_func_calloc_0_nonnull=no])])
--- m4/extensions.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/extensions.m4 2008-04-13 14:06:20.000000000 +0200
@@ -1,7 +1,7 @@
# serial 5 -*- Autoconf -*-
# Enable extensions on systems that normally disable them.
-# Copyright (C) 2003, 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2008 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.
@@ -61,9 +61,9 @@
AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
[ac_cv_safe_to_define___extensions__],
[AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([
+ [AC_LANG_PROGRAM([[
# define __EXTENSIONS__ 1
- AC_INCLUDES_DEFAULT])],
+ ]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 &&
--- m4/gethrxtime.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/gethrxtime.m4 2008-04-13 13:55:12.000000000 +0200
@@ -1,5 +1,5 @@
-# gethrxtime.m4 serial 6
-dnl Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+# gethrxtime.m4 serial 7
+dnl Copyright (C) 2005, 2006, 2008 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.
@@ -28,8 +28,8 @@
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_CACHE_CHECK([for arithmetic hrtime_t], gl_cv_arithmetic_hrtime_t,
[AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([#include <time.h>],
- [hrtime_t x = 0; return x/x;])],
+ [AC_LANG_PROGRAM([[#include <time.h>]],
+ [[hrtime_t x = 0; return x/x;]])],
[gl_cv_arithmetic_hrtime_t=yes],
[gl_cv_arithmetic_hrtime_t=no])])
if test $gl_cv_arithmetic_hrtime_t = yes; then
--- m4/getopt.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/getopt.m4 2008-04-13 13:55:40.000000000 +0200
@@ -1,5 +1,5 @@
-# getopt.m4 serial 13
-dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# getopt.m4 serial 14
+dnl Copyright (C) 2002-2006, 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -46,7 +46,7 @@
if test -z "$GETOPT_H"; then
AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
[AC_RUN_IFELSE(
- [AC_LANG_PROGRAM([#include <getopt.h>],
+ [AC_LANG_PROGRAM([[#include <getopt.h>]],
[[
char *myargv[3];
myargv[0] = "conftest";
--- m4/inttypes.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/inttypes.m4 2008-04-13 13:58:00.000000000 +0200
@@ -1,5 +1,5 @@
-# inttypes.m4 serial 11
-dnl Copyright (C) 2006-2007 Free Software Foundation, Inc.
+# inttypes.m4 serial 12
+dnl Copyright (C) 2006-2008 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.
@@ -32,7 +32,7 @@
&& test "$ac_cv_have_decl_strtoimax" = yes \
&& test "$ac_cv_have_decl_strtoumax" = yes; then
AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([
+ AC_LANG_PROGRAM([[
#include <stddef.h>
#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */
#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */
@@ -131,7 +131,7 @@
SCNoPTR SCNuPTR SCNxPTR
#endif
;
- ])],
+ ]])],
[gl_cv_header_working_inttypes_h=yes])
fi])
@@ -174,9 +174,9 @@
I64) gltype1='__int64';;
esac
AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([#include <stdint.h>
+ [AC_LANG_PROGRAM([[#include <stdint.h>
extern intptr_t foo;
- extern $gltype1 foo;])],
+ extern $gltype1 foo;]])],
[PRIPTR_PREFIX='"'$glpfx'"'])
test -n "$PRIPTR_PREFIX" && break
done
--- m4/math_h.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/math_h.m4 2008-04-13 13:58:36.000000000 +0200
@@ -1,4 +1,4 @@
-# math_h.m4 serial 11
+# math_h.m4 serial 12
dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -9,7 +9,7 @@
AC_REQUIRE([gl_MATH_H_DEFAULTS])
gl_CHECK_NEXT_HEADERS([math.h])
AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(address@hidden:@include <math.h>],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(address@hidden:@include <math.h>]],
[[/* Solaris 10 has a broken definition of NAN. Other platforms
fail to provide NAN, or provide it only in C99 mode; this
test only needs to fail when NAN is provided but wrong. */
@@ -24,7 +24,7 @@
REPLACE_NAN=1
fi
AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(address@hidden:@include <math.h>],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(address@hidden:@include <math.h>]],
[[/* Solaris 10 has a broken definition of HUGE_VAL. */
double d = HUGE_VAL;
return d == 0;]])],
--- m4/mbstate_t.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/mbstate_t.m4 2008-04-13 13:59:16.000000000 +0200
@@ -1,5 +1,5 @@
-# mbstate_t.m4 serial 9
-dnl Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+# mbstate_t.m4 serial 10
+dnl Copyright (C) 2000-2002, 2008 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.
@@ -16,9 +16,9 @@
[AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
- [AC_INCLUDES_DEFAULT
-# include <wchar.h>],
- [mbstate_t x; return sizeof x;])],
+ [AC_INCLUDES_DEFAULT[
+# include <wchar.h>]],
+ [[mbstate_t x; return sizeof x;]])],
[ac_cv_type_mbstate_t=yes],
[ac_cv_type_mbstate_t=no])])
if test $ac_cv_type_mbstate_t = yes; then
--- m4/memmem.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/memmem.m4 2008-04-13 13:59:34.000000000 +0200
@@ -1,4 +1,4 @@
-# memmem.m4 serial 9
+# memmem.m4 serial 10
dnl Copyright (C) 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -26,11 +26,11 @@
if test $ac_cv_have_decl_memmem = yes; then
AC_CACHE_CHECK([whether memmem works in linear time],
[gl_cv_func_memmem_works],
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <string.h> /* for memmem */
#include <stdlib.h> /* for malloc */
#include <unistd.h> /* for alarm */
-], [[size_t m = 1000000;
+]], [[size_t m = 1000000;
char *haystack = (char *) malloc (2 * m + 1);
char *needle = (char *) malloc (m + 1);
void *result = 0;
--- m4/netinet_in_h.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/netinet_in_h.m4 2008-04-13 14:00:01.000000000 +0200
@@ -1,5 +1,5 @@
-# netinet_in_h.m4 serial 3
-dnl Copyright (C) 2006-2007 Free Software Foundation, Inc.
+# netinet_in_h.m4 serial 4
+dnl Copyright (C) 2006-2008 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.
@@ -9,7 +9,7 @@
AC_CACHE_CHECK([whether <netinet/in.h> is self-contained],
[gl_cv_header_netinet_in_h_selfcontained],
[
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <netinet/in.h>], [])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>]], [[]])],
[gl_cv_header_netinet_in_h_selfcontained=yes],
[gl_cv_header_netinet_in_h_selfcontained=no])
])
--- m4/physmem.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/physmem.m4 2008-04-13 14:00:46.000000000 +0200
@@ -1,5 +1,5 @@
-# physmem.m4 serial 7
-dnl Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+# physmem.m4 serial 8
+dnl Copyright (C) 2002-2003, 2005-2006, 2008 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.
@@ -12,8 +12,8 @@
[AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <sys/systemcfg.h>
]],
- [double x = _system_configuration.physmem;
- if (x > 0.0) return 0;])],
+ [[double x = _system_configuration.physmem;
+ if (x > 0.0) return 0;]])],
[gl_cv_var__system_configuration=yes],
[gl_cv_var__system_configuration=no])])
--- m4/putenv.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/putenv.m4 2008-04-13 14:01:08.000000000 +0200
@@ -1,5 +1,5 @@
-# putenv.m4 serial 14
-dnl Copyright (C) 2002-2007 Free Software Foundation, Inc.
+# putenv.m4 serial 15
+dnl Copyright (C) 2002-2008 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.
@@ -14,7 +14,7 @@
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
AC_CACHE_CHECK([for putenv compatible with GNU and SVID],
[gl_cv_func_svid_putenv],
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[[
/* Put it in env. */
if (putenv ("CONFTEST_putenv=val"))
return 1;
@@ -28,7 +28,7 @@
return 1;
return 0;
- ])],
+ ]])],
gl_cv_func_svid_putenv=yes,
gl_cv_func_svid_putenv=no,
dnl When crosscompiling, assume putenv is broken.
--- m4/regex.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/regex.m4 2008-04-13 14:00:22.000000000 +0200
@@ -1,4 +1,4 @@
-#serial 50
+#serial 51
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
# 2006, 2007, 2008 Free Software Foundation, Inc.
@@ -37,13 +37,13 @@
[gl_cv_func_re_compile_pattern_working],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
- [AC_INCLUDES_DEFAULT
+ [AC_INCLUDES_DEFAULT[
#if HAVE_LOCALE_H
#include <locale.h>
#endif
#include <limits.h>
#include <regex.h>
- ],
+ ]],
[[static struct re_pattern_buffer regex;
unsigned char folded_chars[UCHAR_MAX + 1];
int i;
--- m4/stdint.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/stdint.m4 2008-04-13 14:02:03.000000000 +0200
@@ -1,4 +1,4 @@
-# stdint.m4 serial 30
+# stdint.m4 serial 31
dnl Copyright (C) 2001-2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -337,9 +337,9 @@
ui64)gltype1='unsigned __int64';;
esac
AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([$2
+ [AC_LANG_PROGRAM([$2[
extern $gltype foo;
- extern $gltype1 foo;])],
+ extern $gltype1 foo;]])],
[eval gl_cv_type_${gltype}_suffix=\$glsuf])
eval result=\$gl_cv_type_${gltype}_suffix
test "$result" != no && break
--- m4/stdio_h.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/stdio_h.m4 2008-04-13 14:02:33.000000000 +0200
@@ -1,5 +1,5 @@
-# stdio_h.m4 serial 9
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# stdio_h.m4 serial 10
+dnl Copyright (C) 2007-2008 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.
@@ -70,8 +70,8 @@
[
AC_CACHE_CHECK([whether stdin defaults to large file offsets],
[gl_cv_var_stdin_large_offset],
- [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>],
-[#if defined __SL64 && defined __SCLE /* cygwin */
+ [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
+[[#if defined __SL64 && defined __SCLE /* cygwin */
/* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
fseeko/ftello needlessly fail. This bug was fixed in 1.5.25, and
it is easier to do a version check than building a runtime test. */
@@ -79,7 +79,7 @@
# if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
choke me
# endif
-#endif])],
+#endif]])],
[gl_cv_var_stdin_large_offset=yes],
[gl_cv_var_stdin_large_offset=no])])
])
--- m4/strcasestr.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/strcasestr.m4 2008-04-13 14:02:47.000000000 +0200
@@ -1,4 +1,4 @@
-# strcasestr.m4 serial 8
+# strcasestr.m4 serial 9
dnl Copyright (C) 2005, 2007, 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -25,11 +25,11 @@
if test $ac_cv_func_strcasestr = yes; then
AC_CACHE_CHECK([whether strcasestr works in linear time],
[gl_cv_func_strcasestr_linear],
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <string.h> /* for memmem */
#include <stdlib.h> /* for malloc */
#include <unistd.h> /* for alarm */
-], [[size_t m = 1000000;
+]], [[size_t m = 1000000;
char *haystack = (char *) malloc (2 * m + 2);
char *needle = (char *) malloc (m + 2);
void *result = 0;
--- m4/strerror.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/strerror.m4 2008-04-13 14:03:21.000000000 +0200
@@ -1,5 +1,5 @@
-# strerror.m4 serial 7
-dnl Copyright (C) 2002, 2007 Free Software Foundation, Inc.
+# strerror.m4 serial 8
+dnl Copyright (C) 2002, 2007-2008 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.
@@ -22,17 +22,17 @@
[gl_cv_func_working_strerror],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
- [#include <string.h>
- ],
- [return !*strerror (-2);])],
+ [[#include <string.h>
+ ]],
+ [[return !*strerror (-2);]])],
[gl_cv_func_working_strerror=yes],
[gl_cv_func_working_strerror=no],
[dnl Assume crossbuild works if it compiles.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
- [#include <string.h>
- ],
- [return !*strerror (-2);])],
+ [[#include <string.h>
+ ]],
+ [[return !*strerror (-2);]])],
[gl_cv_func_working_strerror=yes],
[gl_cv_func_working_strerror=no])])])
if test $gl_cv_func_working_strerror = no ; then
--- m4/strndup.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/strndup.m4 2008-04-13 14:03:38.000000000 +0200
@@ -1,5 +1,5 @@
-# strndup.m4 serial 14
-dnl Copyright (C) 2002-2003, 2005-2007 Free Software Foundation, Inc.
+# strndup.m4 serial 15
+dnl Copyright (C) 2002-2003, 2005-2008 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.
@@ -18,8 +18,8 @@
# 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,
[AC_RUN_IFELSE([
- AC_LANG_PROGRAM([#include <string.h>
- #include <stdlib.h>], [[
+ AC_LANG_PROGRAM([[#include <string.h>
+ #include <stdlib.h>]], [[
#ifndef HAVE_DECL_STRNDUP
extern char *strndup (const char *, size_t);
#endif
--- m4/strstr.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/strstr.m4 2008-04-13 14:04:53.000000000 +0200
@@ -1,4 +1,4 @@
-# strstr.m4 serial 1
+# strstr.m4 serial 2
dnl Copyright (C) 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -10,11 +10,11 @@
AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
AC_CACHE_CHECK([whether strstr works in linear time],
[gl_cv_func_strstr_linear],
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <string.h> /* for memmem */
#include <stdlib.h> /* for malloc */
#include <unistd.h> /* for alarm */
-], [[size_t m = 1000000;
+]], [[size_t m = 1000000;
char *haystack = (char *) malloc (2 * m + 2);
char *needle = (char *) malloc (m + 2);
void *result = 0;
--- m4/sys_select_h.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/sys_select_h.m4 2008-04-13 14:03:59.000000000 +0200
@@ -1,5 +1,5 @@
-# sys_select_h.m4 serial 3
-dnl Copyright (C) 2006-2007 Free Software Foundation, Inc.
+# sys_select_h.m4 serial 4
+dnl Copyright (C) 2006-2008 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.
@@ -9,7 +9,7 @@
AC_CACHE_CHECK([whether <sys/select.h> is self-contained],
[gl_cv_header_sys_select_h_selfcontained],
[
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/select.h>], [])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/select.h>]], [[]])],
[gl_cv_header_sys_select_h_selfcontained=yes],
[gl_cv_header_sys_select_h_selfcontained=no])
])
--- m4/sys_socket_h.m4.orig 2008-04-13 14:08:47.000000000 +0200
+++ m4/sys_socket_h.m4 2008-04-13 14:04:23.000000000 +0200
@@ -1,5 +1,5 @@
-# sys_socket_h.m4 serial 4
-dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
+# sys_socket_h.m4 serial 5
+dnl Copyright (C) 2005-2008 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.
@@ -11,7 +11,7 @@
AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
[gl_cv_header_sys_socket_h_selfcontained],
[
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/socket.h>], [])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])],
[gl_cv_header_sys_socket_h_selfcontained=yes],
[gl_cv_header_sys_socket_h_selfcontained=no])
])
- AC_LANG_PROGRAM underquoting,
Bruno Haible <=