.

[gnulib.git] / m4 / prereq.m4

diff --git a/m4/prereq.m4 b/m4/prereq.m4
index 3aecaed..407ee18 100644 (file)
--- a/m4/prereq.m4
+++ b/m4/prereq.m4
@@ -1,18 +1,99 @@
-#serial 2
+#serial 10
 
 dnl These are the prerequisite macros for files in the lib/
 dnl directories of the fileutils, sh-utils, and textutils packages.
 
 AC_DEFUN(jm_PREREQ,
 [
+  jm_PREREQ_ADDEXT
+  jm_PREREQ_CANON_HOST
   jm_PREREQ_ERROR
+  jm_PREREQ_GETPAGESIZE
+  jm_PREREQ_HUMAN
+  jm_PREREQ_QUOTEARG
+  jm_PREREQ_READUTMP
   jm_PREREQ_REGEX
 ])
 
-dnl FIXME: maybe put this in a separate file
+AC_DEFUN(jm_PREREQ_ADDEXT,
+[
+  dnl For addext.c.
+  AC_SYS_LONG_FILE_NAMES
+  AC_CHECK_FUNCS(pathconf)
+  AC_CHECK_HEADERS(limits.h string.h unistd.h)
+])
+
+AC_DEFUN(jm_PREREQ_CANON_HOST,
+[
+  dnl Add any libraries as early as possible.
+  dnl In particular, inet_ntoa needs -lnsl at least on Solaris5.5.1,
+  dnl so we have to add -lnsl to LIBS before checking for that function.
+  AC_SEARCH_LIBS(gethostbyname, [inet nsl])
+
+  dnl These come from -lnsl on Solaris5.5.1.
+  AC_CHECK_FUNCS(gethostbyname gethostbyaddr inet_ntoa)
+
+  AC_CHECK_FUNCS(gethostbyname gethostbyaddr inet_ntoa)
+  AC_CHECK_HEADERS(unistd.h string.h netdb.h sys/socket.h \
+                   netinet/in.h arpa/inet.h)
+])
+
+# If you use human.c, you need the following files:
+# uintmax_t.m4 inttypes_h.m4 ulonglong.m4
+AC_DEFUN(jm_PREREQ_HUMAN,
+[
+  AC_CHECK_HEADERS(limits.h stdlib.h string.h)
+  AC_CHECK_DECLS([getenv])
+  AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])
+])
+
+AC_DEFUN(jm_PREREQ_GETPAGESIZE,
+[
+  AC_CHECK_FUNCS(getpagesize)
+  AC_CHECK_HEADERS(OS.h unistd.h)
+])
+
+AC_DEFUN(jm_PREREQ_QUOTEARG,
+[
+  AC_CHECK_FUNCS(isascii iswprint mbrtowc)
+  AC_CHECK_HEADERS(limits.h stdlib.h string.h wchar.h wctype.h)
+  AC_HEADER_STDC
+  AC_C_BACKSLASH_A
+  AC_MBSTATE_T_OBJECT
+  AM_C_PROTOTYPES
+])
+
+AC_DEFUN(jm_PREREQ_READUTMP,
+[
+  AC_HEADER_STDC
+  AC_CHECK_HEADERS(string.h utmp.h utmpx.h sys/param.h)
+  AC_CHECK_FUNCS(utmpname)
+  AC_CHECK_FUNCS(utmpxname)
+  AM_C_PROTOTYPES
+
+  if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
+    utmp_includes="\
+$ac_includes_default
+#ifdef HAVE_UTMPX_H
+# include <utmpx.h>
+#else
+# include <utmp.h>
+#endif
+"
+    AC_CHECK_MEMBERS([struct utmpx.ut_user],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_user],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_name],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_name],,,[$utmp_includes])
+    AC_LIBOBJ(readutmp)
+  fi
+])
+
 AC_DEFUN(jm_PREREQ_REGEX,
 [
-  dnl FIXME: maybe provide a btowc replacement someday: solaris-2.5.1 lacks it
+  dnl FIXME: Maybe provide a btowc replacement someday: solaris-2.5.1 lacks it.
+  dnl FIXME: Check for wctype and iswctype, and and add -lw if necessary
+  dnl to get them.
   AC_CHECK_FUNCS(bzero bcopy isascii btowc)
   AC_CHECK_HEADERS(alloca.h libintl.h wctype.h wchar.h)
   AC_HEADER_STDC