Mercurial > gnulib
annotate m4/sys_utsname_h.m4 @ 40196:e63f5d3edab5
relocatable-prog: Update documentation.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sun, 24 Feb 2019 01:49:15 +0100 |
| parents | b06060465f09 |
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| rev | line source |
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1 # sys_utsname_h.m4 serial 8 |
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2 dnl Copyright (C) 2009-2019 Free Software Foundation, Inc. |
| 11766 | 3 dnl This file is free software; the Free Software Foundation |
| 4 dnl gives unlimited permission to copy and/or distribute it, | |
| 5 dnl with or without modifications, as long as this notice is preserved. | |
| 6 | |
| 7 dnl Written by Bruno Haible. | |
| 8 | |
| 9 AC_DEFUN([gl_SYS_UTSNAME_H], | |
| 10 [ | |
| 11 dnl Use AC_REQUIRE here, so that the default behavior below is expanded | |
| 12 dnl once only, before all statements that occur in other macros. | |
| 13 AC_REQUIRE([gl_SYS_UTSNAME_H_DEFAULTS]) | |
| 14 | |
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15 dnl <sys/utsname.h> is always overridden, because of GNULIB_POSIXCHECK. |
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16 gl_CHECK_NEXT_HEADERS([sys/utsname.h]) |
| 11766 | 17 if test $ac_cv_header_sys_utsname_h != yes; then |
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18 HAVE_SYS_UTSNAME_H=0 |
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19 HAVE_STRUCT_UTSNAME=0 |
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20 else |
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21 HAVE_SYS_UTSNAME_H=1 |
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22 AC_CHECK_TYPES([struct utsname], [], [HAVE_STRUCT_UTSNAME=0], [[ |
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23 /* Minix 3.1.8 has a bug: <stddef.h> must be included before |
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24 <sys/utsname.h>. */ |
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25 #include <stddef.h> |
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26 #include <sys/utsname.h> |
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27 ]]) |
| 11766 | 28 fi |
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29 AC_SUBST([HAVE_SYS_UTSNAME_H]) |
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30 |
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31 dnl Check for declarations of anything we want to poison if the |
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32 dnl corresponding gnulib module is not in use. |
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33 gl_WARN_ON_USE_PREPARE([[ |
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34 /* Minix 3.1.8 has a bug: <stddef.h> must be included before |
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35 <sys/utsname.h>. */ |
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36 #include <stddef.h> |
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37 #include <sys/utsname.h> |
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38 ]], [uname]) |
| 11766 | 39 ]) |
| 40 | |
| 41 AC_DEFUN([gl_SYS_UTSNAME_MODULE_INDICATOR], | |
| 42 [ | |
| 43 dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
| 44 AC_REQUIRE([gl_SYS_UTSNAME_H_DEFAULTS]) | |
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45 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
| 11766 | 46 ]) |
| 47 | |
| 48 AC_DEFUN([gl_SYS_UTSNAME_H_DEFAULTS], | |
| 49 [ | |
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50 GNULIB_UNAME=0; AC_SUBST([GNULIB_UNAME]) |
| 11766 | 51 dnl Assume proper GNU behavior unless another module says otherwise. |
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52 HAVE_UNAME=1; AC_SUBST([HAVE_UNAME]) |
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53 HAVE_STRUCT_UTSNAME=1; AC_SUBST([HAVE_STRUCT_UTSNAME]) |
| 11766 | 54 ]) |