Unify error reporting for configure

Move last two tests (submodule and nowhitespace) to configure
system and unify error reporting. Now all error
messages come from one single place qtwebengine_checkErrors().
This function is used by configure system reporting and by make call.
Remove duplicated strings.

Add extra messages when module is not going to be built.

Change-Id: Ib373facd58135325495aad52b6e600ec9a61f31f
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

4 files changed, 195 insertions, 85 deletions

diff --git a/src/buildtools/config/platform.pri b/src/buildtools/config/platform.pri
index d75c0be26..c5a8d524f 100644
--- a/src/buildtools/config/platform.pri
+++ b/src/buildtools/config/platform.pri
@@ -162,3 +162,118 @@ defineTest(qtwebengine_skipBuild) {
     else: skipBuildReason = "$$skipBuildReason $${EOL}$$1"
     export(skipBuildReason)
 }
+
+defineTest(qtwebengine_checkError) {
+
+    include($$QTWEBENGINE_OUT_ROOT/src/buildtools/qtbuildtools-config.pri)
+    QT_FOR_CONFIG += buildtools-private gui-private
+
+    static {
+       qtwebengine_skipBuild("Static builds of QtWebEngine are not supported.")
+       return(false)
+    }
+
+    !qtHaveModule(gui) {
+        qtwebengine_skipBuild("QtWebEngine requires QtGui.")
+        return(false)
+    }
+
+    !qtConfig(webengine-submodule) {
+        qtwebengine_skipBuild("Submodule qtwebengine-chromium does not exist. Run 'git submodule update --init'.")
+        return(false)
+    }
+
+    !qtConfig(webengine-nowhitespace) {
+        qtwebengine_skipBuild("QtWebEngine cannot be built in a path that contains whitespace characters.")
+        return(false)
+    }
+
+    !qtwebengine_isPlatformSupported() {
+        isEmpty(skipBuildReason): qtwebengine_skipBuild("Unknow error. Platform unsupported.")
+        return(false)
+    }
+
+    !qtwebengine_isArchSupported() {
+        isEmpty(skipBuildReason): qtwebengine_skipBuild("Unknown error. Architecture unsupported.")
+        return(false)
+    }
+
+    !qtConfig(webengine-gperf) {
+        qtwebengine_skipBuild("Tool gperf is required to build QtWebEngine.")
+        return(false)
+    }
+
+    !qtConfig(webengine-bison) {
+        qtwebengine_skipBuild("Tool bison is required to build QtWebEngine.")
+        return(false)
+    }
+
+    !qtConfig(webengine-flex) {
+        qtwebengine_skipBuild("Tool flex is required to build QtWebEngine.")
+        return(false)
+    }
+
+    !qtConfig(webengine-python2) {
+        qtwebengine_skipBuild("Python version 2 (2.7.5 or later) is required to build QtWebEngine.")
+        return(false)
+    }
+
+    linux:!qtwebengine_checkErrorForLinux():return(false)
+    win:!qtwebengine_checkErrorForWindows():return(false)
+
+    sanitizer: !qtConfig(webengine-sanitizer) {
+        qtwebengine_skipBuild("Chosen sanitizer configuration is not supported. Check config.log for details or use -feature-webengine-sanitizer to force build with the chosen sanitizer configuration.")
+        return(false);
+    }
+
+    return(true)
+}
+
+defineTest(qtwebengine_checkErrorForLinux) {
+
+    !qtConfig(pkg-config) {
+        qtwebengine_skipBuild("A pkg-config support is required.")
+        return(false)
+    }
+
+    !qtConfig(webengine-host-pkg-config) {
+        qtwebengine_skipBuild("Host pkg-config is required")
+        return(false)
+    }
+
+    !qtConfig(webengine-system-glibc) {
+        qtwebengine_skipBuild("A suitable version >= 2.27 of libc could not be found.")
+        return(false)
+    }
+
+    !qtConfig(webengine-system-khr) {
+        qtwebengine_skipBuild("khronos development headers appear to be missing (mesa/libegl1-mesa-dev)")
+        return(false)
+    }
+
+    for(package, $$list("nss dbus fontconfig")) {
+        !qtConfig(webengine-system-$$package) {
+            qtwebengine_skipBuild("A suitable version of $$package could not be found.")
+            return(false)
+        }
+    }
+
+    qtConfig(pkg-config):qtConfig(xcb):!qtConfig(webengine-ozone-x11) {
+        qtwebengine_skipBuild("Could not find all necessary libraries for qpa-xcb support")
+        return(false)
+    }
+    return(true)
+}
+
+defineTest(qtwebengine_checkErrorForWindows) {
+    !qtConfig(webengine-win-compiler64) {
+        qtwebengine_skipBuild("Required 64-bit cross-building or native toolchain could not be found.")
+        return(false)
+    }
+
+    !qtConfig(webengine-winversion) {
+        qtwebengine_skipBuild("Needs Visual Studio 2017 or higher")
+        return(false)
+    }
+    return(true)
+}
diff --git a/src/buildtools/configure.json b/src/buildtools/configure.json
index 05a05bb4a..c051b6413 100644
--- a/src/buildtools/configure.json
+++ b/src/buildtools/configure.json
@@ -359,12 +359,19 @@
         "webengine-architecture": {
             "label": "architecture supported",
             "type": "detectArch"
+        },
+        "webengine-submodule" : {
+            "label": "submodule initialized",
+            "type": "detectSubmodule"
+        },
+        "webengine-nowhitespace" : {
+            "label": "build path without whitespace",
+            "type": "detectNoWhitespace"
         }
     },
     "features": {
-        "build-qtwebengine-core": {
+        "webengine-core-support": {
             "label": "Support Qt WebEngine Core",
-            "purpose": "Provides WebEngine Core support.",
             "condition": "module.gui
                          && features.webengine-python2
                          && features.webengine-gperf
@@ -372,11 +379,24 @@
                          && features.webengine-flex
                          && tests.webengine-platform
                          && tests.webengine-architecture
+                         && tests.webengine-submodule
+                         && tests.webengine-nowhitespace
+                         && !config.static
                          && (!config.linux || features.pkg-config)
                          && (!features.xcb || features.webengine-ozone-x11)
                          && (!config.win32 || features.webengine-winversion)",
             "output": [ "privateFeature" ]
         },
+        "build-qtwebengine-core": {
+            "label": "Build Qt WebEngine Core",
+            "purpose": "Provides WebEngine Core support.",
+            "output": [ "privateFeature" ]
+        },
+        "build-qtpdf": {
+             "label": "Support Qt PDF rendering module",
+             "purpose": "Enables building the Qt PDF rendering module.",
+             "output": [ "privateFeature" ]
+        },
         "webengine-developer-build": {
             "label": "Developer build",
             "purpose": "Enables the developer build configuration.",
@@ -631,66 +651,43 @@
             "label": "64bit compiler",
             "condition": "config.win32 && tests.webengine-win-compiler64",
             "output": [ "privateFeature" ]
+        },
+        "webengine-submodule": {
+            "label": "submodule",
+            "condtion": "tests.webengine-submodule",
+            "output": [ "privateFeature" ]
+        },
+        "webengine-nowhitespace": {
+            "label": "nowhitespace",
+            "condition" : "tests.webengine-nowhitespace",
+            "output": [ "privateFeature" ]
         }
     },
     "report": [
         {
-            "type": "warning",
-            "condition": "!module.gui",
-            "message": "QtWebEngine requires QtGui."
-        },
-        {
-            "type": "warning",
-            "condition": "!features.webengine-python2",
-            "message": "Python version 2 (2.7.5 or later) is required to build QtWebEngine."
-        },
-        {
-            "type": "warning",
-            "condition": "!features.webengine-gperf",
-            "message": "gperf is required to build QtWebEngine."
-        },
-        {
-            "type": "warning",
-            "condition": "!features.webengine-bison",
-            "message": "bison is required to build QtWebEngine."
-        },
-        {
-            "type": "warning",
-            "condition": "!features.webengine-flex",
-            "message": "flex is required to build QtWebEngine."
+            "type": "skipBuildWarning",
+            "condition": "!features.webengine-core-support && (features.build-qtwebengine-core || features.build-qtpdf)",
+            "message": "qtwebengine_checkError"
         },
         {
-            "type": "warning",
-            "condition": "config.linux && !features.pkg-config",
-            "message": "Could not find pkg-config."
+            "type": "note",
+            "condition": "features.webengine-core-support && !features.build-qtwebengine-core",
+            "message": "QtWebEngine build is disabled by user."
         },
         {
-            "type": "warning",
-            "condition": "config.linux
-                          && features.pkg-config
-                          && features.xcb
-                          && !features.webengine-ozone-x11",
-            "message": "Could not find all necessary libraries for qpa-xcb support."
+            "type": "note",
+            "condition": "features.webengine-core-support && !features.build-qtpdf",
+            "message": "QtPdf build is disabled by user."
         },
         {
             "type": "warning",
-            "condition": "config.win32 && !features.webengine-winversion",
-            "message": "Needs Visual Studio 2017 or higher."
+            "condition": "!features.webengine-core-support && features.build-qtwebengine-core",
+            "message": "QtWebEngine will not be built."
         },
         {
             "type": "warning",
-            "condition": "config.win32 && !features.webengine-win-compiler64",
-            "message": "64-bit cross-building or native toolchain is required to build QtWebEngine."
-        },
-        {
-            "type": "skipBuildWarning",
-            "condition": "tests.webengine-platform",
-            "message": "qtwebengine_isPlatformSupported"
-        },
-        {
-            "type": "skipBuildWarning",
-            "condition": "tests.webengine-architecture",
-            "message": "qtwebengine_isArchSupported"
+            "condition": "!features.webengine-core-support && features.build-qtpdf",
+            "message": "QtPdf will not be built."
         }
     ],
     "summary": [
diff --git a/src/core/configure.json b/src/core/configure.json
index b65b8e51e..9ee66bf61 100644
--- a/src/core/configure.json
+++ b/src/core/configure.json
@@ -6,7 +6,7 @@
         "gui-private",
         "printsupport"
     ],
-    "condition": "features.build-qtwebengine-core",
+    "condition": "features.build-qtwebengine-core && features.webengine-core-support",
     "testDir": "../../config.tests",
     "commandline": {
         "options": {
diff --git a/src/src.pro b/src/src.pro
index 31b91ccab..adb26efdc 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -10,42 +10,40 @@ QT_FOR_CONFIG += buildtools-private webenginecore webenginecore-private webengin
 
 TEMPLATE = subdirs
 
-isWebEngineCoreBuild(){
-
-    qtConfig(build-qtwebengine-core) {
-
-        core.depends = buildtools
-        process.depends = core
-        webengine.depends = core
-        webenginewidgets.depends = core webengine
-        webengine_plugin.subdir = webengine/plugin
-        webengine_plugin.target = sub-webengine-plugin
-        webengine_plugin.depends = webengine
-
-        SUBDIRS += buildtools core process
-
-        qtConfig(webengine-spellchecker):!qtConfig(webengine-native-spellchecker):!cross_compile {
-            SUBDIRS += qwebengine_convert_dict
-            qwebengine_convert_dict.subdir = tools/qwebengine_convert_dict
-            qwebengine_convert_dict.depends = core
-        }
-
-        qtConfig(webengine-qml) {
-            SUBDIRS += webengine
-        }
-
-        qtConfig(webengine-widgets) {
-            SUBDIRS += plugins webenginewidgets
-            plugins.depends = webenginewidgets
-        }
+
+qtConfig(build-qtwebengine-core):qtConfig(webengine-core-support) {
+    core.depends = buildtools
+    process.depends = core
+    webengine.depends = core
+    webenginewidgets.depends = core webengine
+    webengine_plugin.subdir = webengine/plugin
+    webengine_plugin.target = sub-webengine-plugin
+    webengine_plugin.depends = webengine
+
+    SUBDIRS += buildtools core process
+
+    qtConfig(webengine-spellchecker):!qtConfig(webengine-native-spellchecker):!cross_compile {
+        SUBDIRS += qwebengine_convert_dict
+        qwebengine_convert_dict.subdir = tools/qwebengine_convert_dict
+        qwebengine_convert_dict.depends = core
+    }
+
+    qtConfig(webengine-qml) {
+        SUBDIRS += webengine
     }
-} else {
-    !isEmpty(skipBuildReason):!build_pass {
-            log(QtWebEngine will not be built. $${skipBuildReason} $${EOL})
-            errorbuild.commands = @echo QtWebEngine will not be built. $${skipBuildReason}
-            errorbuild.CONFIG = phony
-            QMAKE_EXTRA_TARGETS += errorbuild
-            first.depends += errorbuild
-            QMAKE_EXTRA_TARGETS += first
+
+    qtConfig(webengine-widgets) {
+        SUBDIRS += plugins webenginewidgets
+        plugins.depends = webenginewidgets
+    }
+}
+
+!qtConfig(webengine-core-support): qtConfig(build-qtwebengine-core) {
+    !qtwebengine_checkError():!isEmpty(skipBuildReason):!build_pass {
+        errorbuild.commands = @echo Modules will not be built. $${skipBuildReason}
+        errorbuild.CONFIG = phony
+        QMAKE_EXTRA_TARGETS += errorbuild
+        first.depends += errorbuild
+        QMAKE_EXTRA_TARGETS += first
     }
 }