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https://github.com/freebsd/freebsd-src
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62 lines
2.1 KiB
Plaintext
62 lines
2.1 KiB
Plaintext
dnl from autoconf 2.13 acspecific.m4, with changes to check for daylight
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AC_DEFUN([AC_STRUCT_TIMEZONE_DAYLIGHT],
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[AC_REQUIRE([AC_STRUCT_TM])dnl
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AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([#include <sys/types.h>
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#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;])],
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ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)])
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if test "$ac_cv_struct_tm_zone" = yes; then
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AC_DEFINE(HAVE_TM_ZONE,1,[HAVE_TM_ZONE])
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fi
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# On SGI, apparently tzname is a #define, but that's ok, AC_CHECK_DECL will
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# consider it declared and we won't give our own extern.
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AC_CHECK_DECLS([tzname], , , [#include <time.h>])
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AC_CACHE_CHECK(for tzname, ac_cv_var_tzname,
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([#include <time.h>],
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[[#if !HAVE_DECL_TZNAME
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extern char *tzname[];
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#endif
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return tzname[0][0];]])], [ac_cv_var_tzname=yes], [ac_cv_var_tzname=no])])
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if test $ac_cv_var_tzname = yes; then
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AC_DEFINE(HAVE_TZNAME,1,[HAVE_TZNAME])
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fi
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AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst,
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([#include <sys/types.h>
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#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_isdst;])],
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ac_cv_struct_tm_isdst=yes, ac_cv_struct_tm_isdst=no)])
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if test "$ac_cv_struct_tm_isdst" = yes; then
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AC_DEFINE(HAVE_TM_ISDST,1,[HAVE_TM_ISDST])
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fi
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AC_CHECK_DECLS([daylight], , , [#include <time.h>
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#include <stdlib.h>])
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AC_CACHE_CHECK(for daylight, ac_cv_var_daylight,
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([#include <time.h>
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#include <stdlib.h>],
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[#if !HAVE_DECL_DAYLIGHT
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extern int daylight;
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#endif
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daylight = atoi("1");])], ac_cv_var_daylight=yes, ac_cv_var_daylight=no)])
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if test $ac_cv_var_daylight = yes; then
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AC_DEFINE(HAVE_DAYLIGHT,1,[HAVE_DAYLIGHT])
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fi
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])
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AC_DEFUN([AC_STRUCT_OPTION_GETOPT_H],
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[AC_CACHE_CHECK([for struct option in getopt], ac_cv_struct_option_getopt_h,
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([#include <getopt.h>], [struct option op; op.name;])],
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ac_cv_struct_option_getopt_h=yes, ac_cv_struct_option_getopt_h=no)])
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if test "$ac_cv_struct_option_getopt_h" = yes; then
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AC_DEFINE(HAVE_STRUCT_OPTION,1,[HAVE_STRUCT_OPTION])
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fi
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])
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