23
36
# define __GNUC_STDC_INLINE__ 1
25
38
AH_VERBATIM([unused_parameter],
26
[/* Define as a marker that can be attached to function parameter declarations
27
for parameters that are not used. This helps to reduce warnings, such as
28
from GCC -Wunused-parameter. */
39
[/* Define as a marker that can be attached to declarations that might not
40
be used. This helps to reduce warnings, such as from
41
GCC -Wunused-parameter. */
29
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#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
30
# define _UNUSED_PARAMETER_ __attribute__ ((__unused__))
32
# define _UNUSED_PARAMETER_
43
# define _GL_UNUSED __attribute__ ((__unused__))
47
/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
48
is a misnomer outside of parameter lists. */
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#define _UNUSED_PARAMETER_ _GL_UNUSED
51
/* The __pure__ attribute was added in gcc 2.96. */
52
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
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# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
55
# define _GL_ATTRIBUTE_PURE /* empty */
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/* The __const__ attribute was added in gcc 2.95. */
59
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
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# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
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# define _GL_ATTRIBUTE_CONST /* empty */
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dnl Preparation for running test programs:
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dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
67
dnl to /dev/tty, so they can be redirected to log files. Such diagnostics
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dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
70
export LIBC_FATAL_STDERR_
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# gl_MODULE_INDICATOR_CONDITION
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# expands to a C preprocessor expression that evaluates to 1 or 0, depending
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# whether a gnulib module that has been requested shall be considered present
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m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
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# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
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# sets the shell variable that indicates the presence of the given module to
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# a C preprocessor expression that will evaluate to 1.
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AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
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gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
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[GNULIB_[]m4_translit([[$1]],
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[abcdefghijklmnopqrstuvwxyz./-],
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[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
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[gl_MODULE_INDICATOR_CONDITION])
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# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
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# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
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# The shell variable's value is a C preprocessor expression that evaluates
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AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
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m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
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dnl Simplify the expression VALUE || 1 to 1.
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[gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
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[gl_MODULE_INDICATOR_CONDITION])])
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# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
107
# modifies the shell variable to include the given condition. The shell
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# variable's value is a C preprocessor expression that evaluates to 0 or 1.
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AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
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dnl Simplify the expression 1 || CONDITION to 1.
112
if test "$[]$1" != 1; then
113
dnl Simplify the expression 0 || CONDITION to CONDITION.
114
if test "$[]$1" = 0; then
37
122
# gl_MODULE_INDICATOR([modulename])
38
# defines a C macro indicating the presence of the given module.
123
# defines a C macro indicating the presence of the given module
124
# in a location where it can be used.
126
# | in lib/ | in tests/ |
127
# --------------------------------------------+---------+-----------+
128
# Module present among main modules: | 1 | 1 |
129
# --------------------------------------------+---------+-----------+
130
# Module present among tests-related modules: | 0 | 1 |
131
# --------------------------------------------+---------+-----------+
132
# Module not present at all: | 0 | 0 |
133
# --------------------------------------------+---------+-----------+
39
134
AC_DEFUN([gl_MODULE_INDICATOR],
41
AC_DEFINE([GNULIB_]translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
42
[Define to 1 when using the gnulib module ]$1[.])
136
AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
137
[abcdefghijklmnopqrstuvwxyz./-],
138
[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
139
[gl_MODULE_INDICATOR_CONDITION],
140
[Define to a C preprocessor expression that evaluates to 1 or 0,
141
depending whether the gnulib module $1 shall be considered present.])
144
# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
145
# defines a C macro indicating the presence of the given module
146
# in lib or tests. This is useful to determine whether the module
149
# | in lib/ | in tests/ |
150
# --------------------------------------------+---------+-----------+
151
# Module present among main modules: | 1 | 1 |
152
# --------------------------------------------+---------+-----------+
153
# Module present among tests-related modules: | 1 | 1 |
154
# --------------------------------------------+---------+-----------+
155
# Module not present at all: | 0 | 0 |
156
# --------------------------------------------+---------+-----------+
157
AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
159
AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
160
[abcdefghijklmnopqrstuvwxyz./-],
161
[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
162
[Define to 1 when the gnulib module $1 should be tested.])
165
# gl_ASSERT_NO_GNULIB_POSIXCHECK
166
# asserts that there will never be a need to #define GNULIB_POSIXCHECK.
167
# and thereby enables an optimization of configure and config.h.
169
AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
171
dnl Override gl_WARN_ON_USE_PREPARE.
172
dnl But hide this definition from 'aclocal'.
173
AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
176
# gl_ASSERT_NO_GNULIB_TESTS
177
# asserts that there will be no gnulib tests in the scope of the configure.ac
178
# and thereby enables an optimization of config.h.
180
AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS],
182
dnl Override gl_MODULE_INDICATOR_FOR_TESTS.
183
AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [])
186
# Test whether <features.h> exists.
187
# Set HAVE_FEATURES_H.
188
AC_DEFUN([gl_FEATURES_H],
190
AC_CHECK_HEADERS_ONCE([features.h])
191
if test $ac_cv_header_features_h = yes; then
196
AC_SUBST([HAVE_FEATURES_H])
49
203
[m4_define([m4_foreach_w],
50
204
[m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])
206
# AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH])
207
# ----------------------------------------------------
208
# Backport of autoconf-2.63b's macro.
209
# Remove this macro when we can assume autoconf >= 2.64.
210
m4_ifndef([AS_VAR_IF],
211
[m4_define([AS_VAR_IF],
212
[AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])])
215
# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
216
AC_DEFUN([gl_PROG_AR_RANLIB],
218
dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
219
dnl as "cc", and GCC as "gcc". They have different object file formats and
220
dnl library formats. In particular, the GNU binutils programs ar, ranlib
221
dnl produce libraries that work only with gcc, not with cc.
222
AC_REQUIRE([AC_PROG_CC])
223
AC_EGREP_CPP([Amsterdam],
233
[dnl Use the Automake-documented default values for AR and ARFLAGS.
236
dnl Use the ranlib program if it is available.
53
# is a backport of autoconf-2.60's AC_PROG_MKDIR_P.
54
# Remove this macro when we can assume autoconf >= 2.60.
55
m4_ifdef([AC_PROG_MKDIR_P], [], [
244
# is a backport of autoconf-2.60's AC_PROG_MKDIR_P, with a fix
245
# for interoperability with automake-1.9.6 from autoconf-2.62.
246
# Remove this macro when we can assume autoconf >= 2.62 or
247
# autoconf >= 2.60 && automake >= 1.10.
248
m4_ifdef([AC_PROG_MKDIR_P], [
249
dnl For automake-1.9.6 && autoconf < 2.62: Ensure MKDIR_P is AC_SUBSTed.
250
m4_define([AC_PROG_MKDIR_P],
251
m4_defn([AC_PROG_MKDIR_P])[
252
AC_SUBST([MKDIR_P])])], [
253
dnl For autoconf < 2.60: Backport of AC_PROG_MKDIR_P.
56
254
AC_DEFUN_ONCE([AC_PROG_MKDIR_P],
57
255
[AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
58
256
MKDIR_P='$(mkdir_p)'
added
removed
m4/gnulib-common.m4
