1# sys_utsname_h.m4 serial 8 2dnl Copyright (C) 2009-2015 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl Written by Bruno Haible. 8 9AC_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 15 dnl <sys/utsname.h> is always overridden, because of GNULIB_POSIXCHECK. 16 gl_CHECK_NEXT_HEADERS([sys/utsname.h]) 17 if test $ac_cv_header_sys_utsname_h != yes; then 18 HAVE_SYS_UTSNAME_H=0 19 HAVE_STRUCT_UTSNAME=0 20 else 21 HAVE_SYS_UTSNAME_H=1 22 AC_CHECK_TYPES([struct utsname], [], [HAVE_STRUCT_UTSNAME=0], [[ 23/* Minix 3.1.8 has a bug: <stddef.h> must be included before 24 <sys/utsname.h>. */ 25#include <stddef.h> 26#include <sys/utsname.h> 27 ]]) 28 fi 29 AC_SUBST([HAVE_SYS_UTSNAME_H]) 30 31 dnl Check for declarations of anything we want to poison if the 32 dnl corresponding gnulib module is not in use. 33 gl_WARN_ON_USE_PREPARE([[ 34 /* Minix 3.1.8 has a bug: <stddef.h> must be included before 35 <sys/utsname.h>. */ 36 #include <stddef.h> 37 #include <sys/utsname.h> 38 ]], [uname]) 39]) 40 41AC_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]) 45 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 46]) 47 48AC_DEFUN([gl_SYS_UTSNAME_H_DEFAULTS], 49[ 50 GNULIB_UNAME=0; AC_SUBST([GNULIB_UNAME]) 51 dnl Assume proper GNU behavior unless another module says otherwise. 52 HAVE_UNAME=1; AC_SUBST([HAVE_UNAME]) 53 HAVE_STRUCT_UTSNAME=1; AC_SUBST([HAVE_STRUCT_UTSNAME]) 54]) 55