X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fftruncate.m4;h=b2ce6dd568dc93b254b4b252de2ed9a231315dfb;hb=2183c2199b61a0738ff5712257ad503223669fe2;hp=d158e25b82eaf2df81e0dcdc109c0ecb086411af;hpb=3cb664198b93b8c1119c8ba1a02c1fda2136f4ce;p=gnulib.git

diff --git a/m4/ftruncate.m4 b/m4/ftruncate.m4
index d158e25b8..b2ce6dd56 100644
--- a/m4/ftruncate.m4
+++ b/m4/ftruncate.m4
@@ -1,14 +1,18 @@
-#serial 3
+#serial 6
 
 # See if we need to emulate a missing ftruncate function using fcntl or chsize.
 
-AC_DEFUN(jm_FUNC_FTRUNCATE,
+AC_DEFUN([gl_FUNC_FTRUNCATE],
 [
-  AC_CHECK_FUNCS(ftruncate, , [ftruncate_missing=yes])
-
-  if test "$ftruncate_missing" = yes; then
-    AC_CHECK_HEADERS([unistd.h])
-    AC_CHECK_FUNCS([chsize])
-    AC_LIBOBJ(ftruncate)
+  AC_REPLACE_FUNCS(ftruncate)
+  if test $ac_cv_func_ftruncate = no; then
+    gl_PREREQ_FTRUNCATE
   fi
 ])
+
+# Prerequisites of lib/ftruncate.c.
+AC_DEFUN([gl_PREREQ_FTRUNCATE],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CHECK_FUNCS(chsize)
+])