configure: modernize iconv use

use library objects for all variants, and inline the tests.

Change-Id: I029f9a6655a783dab4a22abf601aadbb484c03af
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

config.tests/gnu-libiconv/gnu-libiconv.cpp

@@ -1,54 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** 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 The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <iconv.h>
-
-int main(int, char **)
-{
-    iconv_t x = iconv_open("", "");
-
-    const char *inp;
-    char *outp;
-    size_t inbytes, outbytes;
-    iconv(x, &inp, &inbytes, &outp, &outbytes);
-
-    iconv_close(x);
-
-    return 0;
-}

config.tests/gnu-libiconv/gnu-libiconv.pro

@@ -1 +0,0 @@
-SOURCES = gnu-libiconv.cpp

config.tests/iconv/iconv.cpp

@@ -1,54 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** 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 The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <iconv.h>
-
-int main(int, char **)
-{
-    iconv_t x = iconv_open("", "");
-
-    char *inp;
-    char *outp;
-    size_t inbytes, outbytes;
-    iconv(x, &inp, &inbytes, &outp, &outbytes);
-
-    iconv_close(x);
-
-    return 0;
-}

config.tests/iconv/iconv.pro

@@ -1,2 +0,0 @@
-SOURCES = iconv.cpp
-mac|mingw|openbsd|qnx|haiku:LIBS += -liconv

config.tests/sun-libiconv/sun-libiconv.pro

@@ -1 +0,0 @@
-SOURCES = ../gnu-libiconv/gnu-libiconv.cpp

src/corelib/codecs/codecs.pri

@@ -56,8 +56,7 @@ qtConfig(textcodec) {
         qtConfig(iconv) {
             HEADERS += codecs/qiconvcodec_p.h
             SOURCES += codecs/qiconvcodec.cpp
-            qtConfig(gnu-libiconv): \
+            QMAKE_USE_PRIVATE += iconv
-                QMAKE_USE_PRIVATE += iconv
         }
 
         win32 {

src/corelib/configure.json

@@ -47,14 +47,52 @@
                 { "type": "pkgConfig", "args": "glib-2.0 gthread-2.0" }
             ]
         },
+        "posix_iconv": {
+            "label": "POSIX iconv",
+            "export": "iconv",
+            "test": {
+                "main": [
+                    "iconv_t x = iconv_open(\"\", \"\");",
+                    "char *inp, *outp;",
+                    "size_t inbytes, outbytes;",
+                    "iconv(x, &inp, &inbytes, &outp, &outbytes);",
+                    "iconv_close(x);"
+                ]
+            },
+            "headers": "iconv.h",
+            "sources": [
+                { "libs": "-liconv", "condition": "config.openbsd || config.haiku" },
+                { "libs": "", "condition": "!(config.openbsd || config.haiku)" }
+            ]
+        },
         "gnu_iconv": {
             "label": "GNU libiconv",
             "export": "iconv",
-            "test": "gnu-libiconv",
+            "test": {
+                "main": [
+                    "iconv_t x = iconv_open(\"\", \"\");",
+                    "const char *inp;",
+                    "char *outp;",
+                    "size_t inbytes, outbytes;",
+                    "iconv(x, &inp, &inbytes, &outp, &outbytes);",
+                    "iconv_close(x);"
+                ]
+            },
+            "headers": "iconv.h",
             "sources": [
                 "-liconv"
             ]
         },
+        "sun_iconv": {
+            "label": "SUN libiconv",
+            "export": "iconv",
+            "test": {
+                "inherit": "gnu_iconv"
+            },
+            "sources": [
+                ""
+            ]
+        },
         "icu": {
             "label": "ICU",
             "test": {
@@ -336,16 +374,6 @@
                 ]
             }
         },
-        "posix-iconv": {
-            "label": "POSIX iconv",
-            "type": "compile",
-            "test": "iconv"
-        },
-        "sun-iconv": {
-            "label": "SUN libiconv",
-            "type": "compile",
-            "test": "sun-libiconv"
-        },
         "inotify": {
             "label": "inotify",
             "type": "compile",
@@ -576,14 +604,14 @@
             "label": "POSIX iconv",
             "enable": "input.iconv == 'posix'",
             "disable": "input.iconv == 'sun' || input.iconv == 'gnu' || input.iconv == 'no'",
-            "condition": "!config.win32 && !config.qnx && !config.android && !config.darwin && tests.posix-iconv",
+            "condition": "!config.win32 && !config.qnx && !config.android && !config.darwin && libs.posix_iconv",
             "output": [ "privateFeature" ]
         },
         "sun-libiconv": {
             "label": "SUN iconv",
             "enable": "input.iconv == 'sun'",
             "disable": "input.iconv == 'posix' || input.iconv == 'gnu' || input.iconv == 'no'",
-            "condition": "!config.win32 && !config.qnx && !config.android && !config.darwin && !features.posix-libiconv && tests.sun-iconv"
+            "condition": "!config.win32 && !config.qnx && !config.android && !config.darwin && !features.posix-libiconv && libs.sun_iconv"
         },
         "gnu-libiconv": {
             "label": "GNU iconv",