X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=configure.ac;h=30787101d6d9a7de3db529bf642efe833e0cf847;hb=98a60f6ade1f995cd53716c23e00edfba9f97930;hp=202f370a1994c714f8105907da4a063249c70093;hpb=9e72bd7d22cdb096abe35755a5dbcc5dc7686ee9;p=rrdtool.git

diff --git a/configure.ac b/configure.ac
index 202f370..3078710 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,7 +72,7 @@ char *strchr (), *strrchr ();
 
 /* enable posix_fadvise on linux */
 #if defined(HAVE_POSIX_FADVISE) && defined(HAVE_FCNTL_H)
-#define __USE_XOPEN2K 1
+#define _XOPEN_SOURCE 600
 #include <fcntl.h>
 #endif
 
@@ -248,7 +248,7 @@ AC_C_BIGENDIAN
 dnl for each function found we get a definition in config.h 
 dnl of the form HAVE_FUNCTION
 
-AC_CHECK_FUNCS(tzset mbstowcs opendir readdir chdir chroot getuid setlocale strerror strerror_r snprintf vsnprintf fpclass class fp_class isnan memmove strchr mktime getrusage gettimeofday posix_fadvise)
+AC_CHECK_FUNCS(tzset mbstowcs opendir readdir chdir chroot getuid setlocale strerror strerror_r snprintf vsnprintf fpclass class fp_class isnan memmove strchr mktime getrusage gettimeofday posix_fadvise madvise)
 
 
 if test "x$enable_mmap" = xyes; then