From 9773afa84a6ba2bdaa9acab70b27ce75c9e78c4c Mon Sep 17 00:00:00 2001
From: Michal Vaner <vorner@ucw.cz>
Date: Sun, 30 Nov 2008 13:30:47 +0100
Subject: [PATCH] Turn off CONFIG_DIRECT when needed

---
 ucw/perl/UCW/Configure/C.pm      |  6 +++++-
 ucw/perl/UCW/Configure/LibUCW.pm | 13 +++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/ucw/perl/UCW/Configure/C.pm b/ucw/perl/UCW/Configure/C.pm
index 026aef6f..6219a164 100644
--- a/ucw/perl/UCW/Configure/C.pm
+++ b/ucw/perl/UCW/Configure/C.pm
@@ -256,7 +256,11 @@ if (IsSet("CONFIG_DARWIN")) {
 	Append("COPT" => "-I/sw/include");
 	# Fill in some constants not found in the system header files
 	Set("SOL_TCP" => 6);		# missing in /usr/include/netinet/tcp.h
-	Set("O_DIRECT" => 0);		# Darwin doesn't support direct IO, so make Sherlock at least compilable
+	if (IsGiven("CONFIG_DIRECT") && IsSet("CONFIG_DIRECT")) {
+		Fail("Direct I/O is not available on darwin");
+	} else {
+		UnSet("CONFIG_DIRECT");
+	}
 }
 
 ### Writing C headers with configuration ###
diff --git a/ucw/perl/UCW/Configure/LibUCW.pm b/ucw/perl/UCW/Configure/LibUCW.pm
index 6a25dbba..19fcb038 100644
--- a/ucw/perl/UCW/Configure/LibUCW.pm
+++ b/ucw/perl/UCW/Configure/LibUCW.pm
@@ -43,6 +43,19 @@ if (Get("CPU_ARCH") eq "default" || Get("CPU_ARCH") =~ /^i[345]86$/) {
 	Set("CONFIG_UCW_RADIX_SORTER_BITS" => 12);
 }
 
+# fb_direct needs threads
+if (!IsSet("CONFIG_UCW_THREADS")) {
+	if (IsGiven("CONFIG_DIRECT") && IsSet("CONFIG_DIRECT")) {
+		if (!IsGiven("CONFIG_UCW_THREADS")) {
+			Set("CONFIG_UCW_THREADS");
+		} else {
+			Fail("CONFIG_DIRECT needs CONFIG_UCW_THREADS");
+		}
+	} else {
+		UnSet("CONFIG_DIRECT");
+	}
+}
+
 PostConfig {
 	AtWrite {
 		UCW::Configure::C::ConfigHeader("ucw/autoconf.h", [
-- 
2.39.2