gdb/gnulib/m4/gnulib-common.m4 - binutils-gdb - Git at Google

 # gnulib-common.m4 serial 20
 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.])
 ])

 # 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"
 ])
	# gnulib-common.m4 serial 20
	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.])
	])

	# 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"
	])