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authorVolker Lendecke <vl@samba.org>2013-01-12 16:08:07 +0100
committerJeremy Allison <jra@samba.org>2013-01-14 21:16:23 +0100
commite0bfb59803184c44cfc354b99ba3d8d7bbfc72b9 (patch)
tree9472551c7fe96fb464d5803701c4fa2337c0e416 /lib
parentd87ad906df96ac82924ccaf1a127b20c745f1dca (diff)
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Fix bug 9548: Correctly detect O_DIRECT
Reviewed by: Jeremy Allison <jra@samba.org> Autobuild-User(master): Jeremy Allison <jra@samba.org> Autobuild-Date(master): Mon Jan 14 21:16:23 CET 2013 on sn-devel-104
Diffstat (limited to 'lib')
-rw-r--r--lib/replace/libreplace.m421
-rw-r--r--lib/replace/wscript11
2 files changed, 21 insertions, 11 deletions
diff --git a/lib/replace/libreplace.m4 b/lib/replace/libreplace.m4
index ac2af27f31..5a4184493e 100644
--- a/lib/replace/libreplace.m4
+++ b/lib/replace/libreplace.m4
@@ -357,6 +357,16 @@ if test x"$libreplace_cv_sig_atomic_t" = x"yes"; then
fi
+dnl Check if the C compiler understands volatile (it should, being ANSI).
+AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [
+ AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
+ libreplace_cv_volatile=yes,libreplace_cv_volatile=no)])
+if test x"$libreplace_cv_volatile" = x"yes"; then
+ AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
+fi
+
+m4_include(system/config.m4)
+
AC_CACHE_CHECK([for O_DIRECT flag to open(2)],libreplace_cv_HAVE_OPEN_O_DIRECT,[
AC_TRY_COMPILE([
#include <unistd.h>
@@ -369,17 +379,6 @@ if test x"$libreplace_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then
AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT])
fi
-
-dnl Check if the C compiler understands volatile (it should, being ANSI).
-AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [
- AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
- libreplace_cv_volatile=yes,libreplace_cv_volatile=no)])
-if test x"$libreplace_cv_volatile" = x"yes"; then
- AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
-fi
-
-m4_include(system/config.m4)
-
m4_include(dlfcn.m4)
m4_include(strptime.m4)
m4_include(win32.m4)
diff --git a/lib/replace/wscript b/lib/replace/wscript
index 296dae907f..674b99d1f2 100644
--- a/lib/replace/wscript
+++ b/lib/replace/wscript
@@ -106,6 +106,17 @@ struct foo bar = { .y = 'X', .x = 1 };
conf.CHECK_HEADERS('utmp.h utmpx.h lastlog.h malloc.h')
conf.CHECK_HEADERS('syscall.h sys/syscall.h inttypes.h')
+ conf.CHECK_CODE('''
+ #include <unistd.h>
+ #ifdef HAVE_FCNTL_H
+ #include <fcntl.h>
+ #endif
+ int main(void) { int fd = open("/dev/null", O_DIRECT); }
+ ''',
+ define='HAVE_OPEN_O_DIRECT',
+ addmain=False,
+ msg='Checking for O_DIRECT flag to open(2)')
+
conf.CHECK_TYPES('"long long" intptr_t uintptr_t ptrdiff_t comparison_fn_t')
conf.CHECK_TYPE('_Bool', define='HAVE__Bool')
conf.CHECK_TYPE('bool', define='HAVE_BOOL')