From 46e632e2555b6b8abe6b8d8ad7d255e27c128e25 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fatih=20A=C5=9F=C4=B1c=C4=B1?= <fatih.asici@gmail.com>
Date: Mon, 11 Nov 2013 17:04:46 +0200
Subject: [PATCH] Detect posix_fallocate at configure time

Testing feature macros is not enough for uclibc. Fixes build of the built-in
sqlite3 with uclibc <= 0.9.33.2. Later versions will have posix_fallocate().

Change-Id: I918a52777ac63624635802221effc6b86fa2269c
Signed-off-by: Fatih Aşıcı <fatih.asici@gmail.com>
Reported-Upstream: https://codereview.qt-project.org/70935
---
 .../unix/posix_fallocate/posix_fallocate.cpp       | 53 ++++++++++++++++++++++
 .../unix/posix_fallocate/posix_fallocate.pro       |  2 +
 configure                                          | 14 ++++++
 src/3rdparty/sqlite.pri                            |  1 +
 src/3rdparty/sqlite/sqlite3.c                      |  7 ---
 5 files changed, 70 insertions(+), 7 deletions(-)
 create mode 100644 config.tests/unix/posix_fallocate/posix_fallocate.cpp
 create mode 100644 config.tests/unix/posix_fallocate/posix_fallocate.pro

diff --git a/config.tests/unix/posix_fallocate/posix_fallocate.cpp b/config.tests/unix/posix_fallocate/posix_fallocate.cpp
new file mode 100644
index 0000000..5acd45a
--- /dev/null
+++ b/config.tests/unix/posix_fallocate/posix_fallocate.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <fcntl.h>
+
+int main(int, char **)
+{
+#if _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L
+    return ::posix_fallocate(0, 0, 0);
+#else
+#  error posix_fallocate not available
+    // MIPSpro doesn't understand #error, so force a compiler error
+    force_compiler_error = true;
+#endif
+}
diff --git a/config.tests/unix/posix_fallocate/posix_fallocate.pro b/config.tests/unix/posix_fallocate/posix_fallocate.pro
new file mode 100644
index 0000000..f01b15f
--- /dev/null
+++ b/config.tests/unix/posix_fallocate/posix_fallocate.pro
@@ -0,0 +1,2 @@
+SOURCES = posix_fallocate.cpp
+CONFIG -= qt dylib
diff --git a/configure b/configure
index 81e2a93..b67ed89 100755
--- a/configure
+++ b/configure
@@ -968,6 +968,7 @@ CFG_MIPS_DSP=auto
 CFG_MIPS_DSPR2=auto
 CFG_CLOCK_GETTIME=auto
 CFG_CLOCK_MONOTONIC=auto
+CFG_POSIX_FALLOCATE=auto
 CFG_MREMAP=auto
 CFG_GETADDRINFO=auto
 CFG_IPV6IFNAME=auto
@@ -5653,6 +5654,15 @@ elif [ "$CFG_CLOCK_GETTIME" = "no" ]; then
     CFG_CLOCK_MONOTONIC=no
 fi
 
+# detect posix_fallocate
+if [ "$CFG_POSIX_FALLOCATE" = "auto" ]; then
+    if compileTest unix/posix_fallocate "posix_fallocate"; then
+        CFG_POSIX_FALLOCATE=yes
+    else
+        CFG_POSIX_FALLOCATE=no
+    fi
+fi
+
 # detect mremap
 if [ "$CFG_MREMAP" = "auto" ]; then
     if compileTest unix/mremap "mremap"; then
@@ -5970,6 +5980,9 @@ fi
 if [ "$CFG_CLOCK_MONOTONIC" = "yes" ]; then
     QT_CONFIG="$QT_CONFIG clock-monotonic"
 fi
+if [ "$CFG_POSIX_FALLOCATE" = "yes" ]; then
+    QT_CONFIG="$QT_CONFIG posix_fallocate"
+fi
 if [ "$CFG_MREMAP" = "yes" ]; then
     QT_CONFIG="$QT_CONFIG mremap"
 fi
@@ -6449,6 +6462,7 @@ QMakeVar set sql-plugins "$SQL_PLUGINS"
 [ "$CFG_GLIB" != "yes" ]     && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_GLIB"
 [ "$CFG_QGTKSTYLE" != "yes" ] && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_STYLE_GTK"
 [ "$CFG_CLOCK_MONOTONIC" = "no" ] && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_CLOCK_MONOTONIC"
+[ "$CFG_POSIX_FALLOCATE" = "no" ] && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_POSIX_FALLOCATE"
 [ "$CFG_MREMAP" = "no" ]     && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_MREMAP"
 [ "$CFG_GETADDRINFO" = "no" ]&& QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_GETADDRINFO"
 [ "$CFG_IPV6IFNAME" = "no" ] && QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_IPV6IFNAME"
diff --git a/src/3rdparty/sqlite.pri b/src/3rdparty/sqlite.pri
index 58d4ddd..072502c 100644
--- a/src/3rdparty/sqlite.pri
+++ b/src/3rdparty/sqlite.pri
@@ -1,6 +1,7 @@
 CONFIG(release, debug|release):DEFINES *= NDEBUG
 DEFINES += SQLITE_OMIT_LOAD_EXTENSION SQLITE_OMIT_COMPLETE SQLITE_ENABLE_FTS3 SQLITE_ENABLE_FTS3_PARENTHESIS SQLITE_ENABLE_RTREE
 !contains(CONFIG, largefile):DEFINES += SQLITE_DISABLE_LFS
+contains(QT_CONFIG, posix_fallocate):DEFINES += HAVE_POSIX_FALLOCATE=1
 winrt: DEFINES += SQLITE_OS_WINRT
 INCLUDEPATH +=  $$PWD/sqlite
 SOURCES +=      $$PWD/sqlite/sqlite3.c
diff --git a/src/3rdparty/sqlite/sqlite3.c b/src/3rdparty/sqlite/sqlite3.c
index 03fa649..1ae9be2 100644
--- a/src/3rdparty/sqlite/sqlite3.c
+++ b/src/3rdparty/sqlite/sqlite3.c
@@ -22935,13 +22935,6 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
 */
 #if SQLITE_OS_UNIX              /* This file is used on unix only */
 
-/* Use posix_fallocate() if it is available
-*/
-#if !defined(HAVE_POSIX_FALLOCATE) \
-      && (_XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L)
-# define HAVE_POSIX_FALLOCATE 1
-#endif
-
 /*
 ** There are various methods for file locking used for concurrency
 ** control:
-- 
1.8.4.rc3