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      1 #serial 20
      2 
      3 dnl This is just a wrapper function to encapsulate this kludge.
      4 dnl Putting it in a separate file like this helps share it between
      5 dnl different packages.
      6 AC_DEFUN([gl_CHECK_DECLS],
      7 [
      8   AC_REQUIRE([_gl_DECL_HEADERS])
      9   AC_REQUIRE([AC_HEADER_TIME])
     10   headers='
     11 #include <stdio.h>
     12 #include <string.h>
     13 #include <stdlib.h>
     14 
     15 #if HAVE_UNISTD_H
     16 # include <unistd.h>
     17 #endif
     18 
     19 #include <sys/types.h>
     20 #if TIME_WITH_SYS_TIME
     21 # include <sys/time.h>
     22 # include <time.h>
     23 #else
     24 # if HAVE_SYS_TIME_H
     25 #  include <sys/time.h>
     26 # else
     27 #  include <time.h>
     28 # endif
     29 #endif
     30 
     31 #if HAVE_UTMP_H
     32 # include <utmp.h>
     33 #endif
     34 
     35 #if HAVE_GRP_H
     36 # include <grp.h>
     37 #endif
     38 
     39 #if HAVE_PWD_H
     40 # include <pwd.h>
     41 #endif
     42 '
     43 
     44   AC_CHECK_DECLS([
     45     free,
     46     getenv,
     47     geteuid,
     48     getgrgid,
     49     getlogin,
     50     getpwuid,
     51     getuid,
     52     getutent,
     53     lseek,
     54     malloc,
     55     memchr,
     56     memrchr,
     57     nanosleep,
     58     realloc,
     59     stpcpy,
     60     strndup,
     61     strnlen,
     62     strstr,
     63     strtoul,
     64     strtoull,
     65     ttyname], , , $headers)
     66 ])
     67 
     68 dnl FIXME: when autoconf has support for it.
     69 dnl This is a little helper so we can require these header checks.
     70 AC_DEFUN([_gl_DECL_HEADERS],
     71 [
     72   AC_REQUIRE([AC_HEADER_STDC])
     73   AC_CHECK_HEADERS(grp.h memory.h pwd.h string.h strings.h stdlib.h \
     74                    unistd.h sys/time.h utmp.h utmpx.h)
     75 ])
     76