X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=configure.ac;h=8fa3c0075bcb9d23a0f212061aa1dcddb5ad1e91;hp=636ae651560c7fd9dde6c9fb6a70d6a286127c37;hb=264a94560ae83c638e05b0b93b85fd6285b07dac;hpb=222d568e3f4d76775090ce0c061d548b06920261

diff --git a/configure.ac b/configure.ac
index 636ae65..8fa3c00 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,15 +54,15 @@ AH_TOP([
 AH_BOTTOM([
 /* make sure that we pickup the correct stuff from all headers */
 #define _XOPEN_SOURCE 600
-#if HAVE_FEATURES_H
+#ifdef HAVE_FEATURES_H
 # include <features.h>
 #endif
 
-#if HAVE_SYS_TYPES_H
+#ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>
 #endif
 
-#if HAVE_SYS_PARAM_H
+#ifdef HAVE_SYS_PARAM_H
 # include <sys/param.h>
 #endif
 #ifndef MAXPATH
@@ -77,11 +77,11 @@ AH_BOTTOM([
 # endif
 #endif
 
-#if HAVE_ERRNO_H
+#ifdef HAVE_ERRNO_H
 # include <errno.h>
 #endif
 
-#if HAVE_SYS_MMAN_H
+#ifdef HAVE_SYS_MMAN_H
 # include <sys/mman.h>
 #endif
 #if !defined HAVE_MADVISE && defined HAVE_POSIX_MADVISE
@@ -97,7 +97,7 @@ AH_BOTTOM([
 # define USE_MADVISE 1
 #endif
 
-#if HAVE_SYS_STAT_H
+#ifdef HAVE_SYS_STAT_H
 # include <sys/stat.h>
 #endif
 
@@ -106,26 +106,26 @@ AH_BOTTOM([
 #include <fcntl.h>
 #endif
 
-#if HAVE_UNISTD_H
+#ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
 
-#if TIME_WITH_SYS_TIME
+#ifdef TIME_WITH_SYS_TIME
 # include <sys/time.h>
 # include <time.h>
 #else
-# if HAVE_SYS_TIME_H
+# ifdef HAVE_SYS_TIME_H
 #  include <sys/time.h>
 # else
 #  include <time.h>
 # endif
 #endif
 
-#if HAVE_SYS_TIMES_H
+#ifdef HAVE_SYS_TIMES_H
 # include <sys/times.h>
 #endif
 
-#if HAVE_SYS_RESOURCE_H
+#ifdef HAVE_SYS_RESOURCE_H
 # include <sys/resource.h>
 #if (defined(__svr4__) && defined(__sun__))
 /* Solaris headers (pre 2.6) don't have a getrusage prototype.
@@ -162,31 +162,31 @@ char *strchr (), *strrchr ();
 #  include <malloc/malloc.h>
 #endif
 
-#if HAVE_STDIO_H
+#ifdef HAVE_STDIO_H
 # include <stdio.h>
 #endif
 
-#if HAVE_STDLIB_H
+#ifdef HAVE_STDLIB_H
 # include <stdlib.h>
 #endif
 
-#if HAVE_CTYPE_H
+#ifdef HAVE_CTYPE_H
 # include <ctype.h>
 #endif
 
-#if HAVE_DIRENT_H
+#ifdef HAVE_DIRENT_H
 # include <dirent.h>
 # define NAMLEN(dirent) strlen((dirent)->d_name)
 #else
 # define dirent direct
 # define NAMLEN(dirent) (dirent)->d_namlen
-# if HAVE_SYS_NDIR_H
+# ifdef HAVE_SYS_NDIR_H
 #  include <sys/ndir.h>
 # endif
-# if HAVE_SYS_DIR_H
+# ifdef HAVE_SYS_DIR_H
 #  include <sys/dir.h>
 # endif
-# if HAVE_NDIR_H
+# ifdef HAVE_NDIR_H
 #  include <ndir.h>
 # endif
 #endif
@@ -299,7 +299,10 @@ AC_ARG_ENABLE([mmap],
 [  --disable-mmap          disable mmap in rrd_update, use seek+write instead],
 [],
 [enable_mmap=yes])
-
+AC_ARG_ENABLE([direct-io],
+[  --enable-direct-io      enable O_DIRECT],
+[],
+[enable_direct_io=yes])
 
  AC_ARG_ENABLE(pthread,[  --disable-pthread       disable multithread support],
 [],[enable_pthread=yes])
@@ -383,7 +386,7 @@ if test "x$enable_mmap" = "xyes"; then
     AC_CHECK_HEADERS(sys/mman.h)
     AC_FUNC_MMAP
     AC_CHECK_FUNCS(mmap munmap)
-    AC_CHECK_DECLS(madvise, [], [], [#if HAVE_SYS_MMAN_H
+    AC_CHECK_DECLS(madvise, [], [], [#ifdef HAVE_SYS_MMAN_H
 				     # include <sys/mman.h>
 				     #endif])
     if test "x$ac_cv_have_decl_madvise" = "xyes";
@@ -404,6 +407,11 @@ if test "x$enable_mmap" = "xyes"; then
 fi
 
 
+dnl if test "x$enable_direct_io" = "xyes"; then
+dnl check for working O_DIRECT
+dnl fi
+AC_SUBST([USE_DIRECT_IO])
+
 CONFIGURE_PART(IEEE Math Checks)