sqrtl: Simplify for platforms where 'long double' == 'double'.

[gnulib.git] / m4 / getcwd-path-max.m4

diff --git a/m4/getcwd-path-max.m4 b/m4/getcwd-path-max.m4
index feb0d4d..6be4b2c 100644 (file)
--- a/m4/getcwd-path-max.m4
+++ b/m4/getcwd-path-max.m4
@@ -1,4 +1,4 @@
-# serial 16
+# serial 18
 # Check for several getcwd bugs with long file names.
 # If so, arrange to compile the wrapper function.
 
@@ -17,22 +17,31 @@ AC_DEFUN([gl_FUNC_GETCWD_PATH_MAX],
 [
   AC_CHECK_DECLS_ONCE([getcwd])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
   AC_CACHE_CHECK([whether getcwd handles long file names properly],
     gl_cv_func_getcwd_path_max,
     [# Arrange for deletion of the temporary directory this test creates.
      ac_clean_files="$ac_clean_files confdir3"
+     dnl Please keep this in sync with tests/test-getcwd.c.
      AC_RUN_IFELSE(
        [AC_LANG_SOURCE(
           [[
 #include <errno.h>
 #include <stdlib.h>
-#include <unistd.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#else
+# include <direct.h>
+#endif
 #include <string.h>
 #include <limits.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <fcntl.h>
 
+]gl_PATHMAX_SNIPPET[
+
 #ifndef AT_FDCWD
 # define AT_FDCWD 0
 #endif