From 4672db851932db81ce5fbfca924399697b4d511e Mon Sep 17 00:00:00 2001
From: Rafael Roquetto <rafael.roquetto@kdab.com>
Date: Thu, 2 Feb 2012 14:53:37 +0100
Subject: Add support for QNX iconv implementation.

QNX implements the POSIX version of iconv (with non-const function
signatures). However, it is still necessary to link with libiconv, unlike most
cases. Also, its iconv_open does not know how to handle an empty string.

cherry-picked from qt5/qtbase 38cba9a37fc5fe76b1549463422ab539a1b4cf24

Change-Id: Ia77633f1ddfdc8f5a8414125f8363749a6449cc8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
---
 config.tests/unix/iconv/iconv.pro  | 2 +-
 configure                          | 4 ++--
 src/corelib/codecs/codecs.pri      | 1 +
 src/corelib/codecs/qiconvcodec.cpp | 5 +++++
 4 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/config.tests/unix/iconv/iconv.pro b/config.tests/unix/iconv/iconv.pro
index d642da2..ec573ce 100644
--- a/config.tests/unix/iconv/iconv.pro
+++ b/config.tests/unix/iconv/iconv.pro
@@ -1,3 +1,3 @@
 SOURCES = iconv.cpp
 CONFIG -= qt dylib app_bundle
-mac|win32-g++*:LIBS += -liconv
+mac|win32-g++*|blackberry-*-qcc:LIBS += -liconv
diff --git a/configure b/configure
index 84b6202..6403a2f 100755
--- a/configure
+++ b/configure
@@ -5600,8 +5600,8 @@ fi
 
 # auto-detect iconv(3) support
 if [ "$CFG_ICONV" != "no" ]; then
-    if [ "$PLATFORM_QWS" = "yes" -o "$PLATFORM_QPA" = "yes" ]; then
-	CFG_ICONV=no
+    if [ "$PLATFORM_QWS" = "yes" ] || [ "$PLATFORM_QPA" = "yes" -a "$CFG_ICONV" = "auto" ]; then
+        CFG_ICONV=no
     elif "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" "$OPT_VERBOSE" "$relpath" "$outpath" "config.tests/unix/iconv" "POSIX iconv" $L_FLAGS $I_FLAGS $l_FLAGS $MAC_CONFIG_TEST_COMMANDLINE; then
         CFG_ICONV=yes
     elif "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" "$OPT_VERBOSE" "$relpath" "$outpath" "config.tests/unix/sun-libiconv" "SUN libiconv" $L_FLAGS $I_FLAGS $l_FLAGS $MAC_CONFIG_TEST_COMMANDLINE; then
diff --git a/src/corelib/codecs/codecs.pri b/src/corelib/codecs/codecs.pri
index 46d7dd4..6bc2fa6 100644
--- a/src/corelib/codecs/codecs.pri
+++ b/src/corelib/codecs/codecs.pri
@@ -25,6 +25,7 @@ unix {
         contains(QT_CONFIG,iconv) {
                 HEADERS += codecs/qiconvcodec_p.h
                 SOURCES += codecs/qiconvcodec.cpp
+                blackberry-*-qcc:LIBS_PRIVATE *= -liconv
         } else:contains(QT_CONFIG,gnu-libiconv) {
                 HEADERS += codecs/qiconvcodec_p.h
                 SOURCES += codecs/qiconvcodec.cpp
diff --git a/src/corelib/codecs/qiconvcodec.cpp b/src/corelib/codecs/qiconvcodec.cpp
index 428e7d4..59c77ba 100644
--- a/src/corelib/codecs/qiconvcodec.cpp
+++ b/src/corelib/codecs/qiconvcodec.cpp
@@ -462,8 +462,13 @@ iconv_t QIconvCodec::createIconv_t(const char *to, const char *from)
 
     iconv_t cd = (iconv_t) -1;
 #if defined(__GLIBC__) || defined(GNU_LIBICONV)
+#if defined(Q_OS_QNX)
+    // on QNX the default locale is UTF-8, and an empty string will cause iconv_open to fail
+    static const char empty_codeset[] = "UTF-8";
+#else
     // both GLIBC and libgnuiconv will use the locale's encoding if from or to is an empty string
     static const char empty_codeset[] = "";
+#endif
     const char *codeset = empty_codeset;
     cd = iconv_open(to ? to : codeset, from ? from : codeset);
 #else
-- 
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