Automatically check for the fdatasync() function and replace it with fsync()

if not found. (CVS 2739)

FossilOrigin-Name: 385a08afefaf552db221ae8bd30ecc7e7c07ee5b

configure

@@ -1496,7 +1496,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 # The following RCS revision string applies to configure.in
-# $Revision: 1.31 $
+# $Revision: 1.32 $
 
 #########
 # Programs needed
@@ -20340,6 +20340,111 @@ if test $ac_cv_func_usleep = yes; then
 fi
 
 
+#--------------------------------------------------------------------
+# Redefine fdatasync as fsync on systems that lack fdatasync
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for fdatasync" >&5
+echo $ECHO_N "checking for fdatasync... $ECHO_C" >&6
+if test "${ac_cv_func_fdatasync+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define fdatasync to an innocuous variant, in case <limits.h> declares fdatasync.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define fdatasync innocuous_fdatasync
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char fdatasync (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef fdatasync
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char fdatasync ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_fdatasync) || defined (__stub___fdatasync)
+choke me
+#else
+char (*f) () = fdatasync;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != fdatasync;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_fdatasync=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_fdatasync=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_fdatasync" >&5
+echo "${ECHO_T}$ac_cv_func_fdatasync" >&6
+if test $ac_cv_func_fdatasync = yes; then
+  :
+else
+  cat >>confdefs.h <<\_ACEOF
+#define fdatasync fsync
+_ACEOF
+
+fi
+
+
+
 #########
 # Generate the output files.
 #

configure.ac

@@ -116,7 +116,7 @@ AC_INIT(src/sqlite.h.in)
 dnl Put the RCS revision string after AC_INIT so that it will also
 dnl show in in configure.
 # The following RCS revision string applies to configure.in
-# $Revision: 1.17 $
+# $Revision: 1.18 $
 
 #########
 # Programs needed
@@ -607,6 +607,13 @@ AC_SUBST(TARGET_DEBUG)
 #
 AC_CHECK_FUNC(usleep, [TARGET_CFLAGS="$TARGET_CFLAGS -DHAVE_USLEEP=1"])
 
+#--------------------------------------------------------------------
+# Redefine fdatasync as fsync on systems that lack fdatasync
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNC(fdatasync, , AC_DEFINE(fdatasync, fsync))
+
+
 #########
 # Generate the output files.
 #

manifest

@@ -1,5 +1,5 @@
-C The\shash\stables\sdeallocate\swhen\sempty\sin\sorder\sto\savoid\snuisanse\scomplaints\nfrom\svalgrind.\s\sAdded\stests\sto\sverify\sno\shash\stable\smemory\sleaks\sin\sos_unix.c.\s(CVS\s2738)
-D 2005-10-03T15:11:09
+C Automatically\scheck\sfor\sthe\sfdatasync()\sfunction\sand\sreplace\sit\swith\sfsync()\nif\snot\sfound.\s(CVS\s2739)
+D 2005-10-04T18:38:50
 F Makefile.in 12784cdce5ffc8dfb707300c34e4f1eb3b8a14f1
 F Makefile.linux-gcc 06be33b2a9ad4f005a5f42b22c4a19dab3cbb5c7
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -11,8 +11,8 @@ F art/SQLite.gif 1bbb94484963f1382e27e1c5e86dd0c1061eba2b
 F art/SQLiteLogo3.tiff b9e6bf022ae939bc986cddb8ab99583ca1b02cb3
 F config.guess 2103e94b15dc57112d7b9ee152c6fac5288895b4
 F config.sub 9bf686ec001ae7bc53f5b3563c90c62d4c6d48be
-F configure b36e5d4156002b857e4c741626a7ac8412c2885c x
-F configure.ac fe941d9e98fff7edecdaca36a730da76f397f378
+F configure b03b598fb77785964f40a8095e41cf0ea36f5ccd x
+F configure.ac e326bf833811b30229c996a0086c4ce563be7caa
 F contrib/sqlitecon.tcl 210a913ad63f9f991070821e599d600bd913e0ad
 F doc/lemon.html f0f682f50210928c07e562621c3b7e8ab912a538
 F doc/report1.txt a031aaf37b185e4fa540223cb516d3bccec7eeac
@@ -314,7 +314,7 @@ F www/tclsqlite.tcl ddcf912ea48695603c8ed7efb29f0812ef8d1b49
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
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 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 6d780ca6cfbea10d29a4a1b5226efb269606e21a
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+P 080eadca582a49a069a76ed113ec15e9bce2955a
+R 3ecbcfe5901c6c8a7b3f81a3f1da8baf
 U drh
-Z 91a5e6855088b35f854c80b36fa5d6c9
+Z a7dbf64f356a2c1f918f1d5112d2dd39

manifest.uuid

@@ -1 +1 @@
-080eadca582a49a069a76ed113ec15e9bce2955a
+385a08afefaf552db221ae8bd30ecc7e7c07ee5b