Add examples.

These are mostly former manual tests that seem useful for
demonstrating some feature to learners.

Change-Id: I06d895ebdee1280699416cf4930a08602951aaf7
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

6 files changed, 98 insertions, 0 deletions

diff --git a/examples/helloworld-complex/hello.qbs b/examples/helloworld-complex/hello.qbs
new file mode 100644
index 000000000..393179a5e
--- /dev/null
+++ b/examples/helloworld-complex/hello.qbs
@@ -0,0 +1,39 @@
+import qbs 1.0
+
+Project {
+    property bool hasSpecialFeature: true
+    Application {
+        name: 'HelloWorld-Complex'
+
+        Depends { name: 'cpp' }
+        cpp.defines: ['SOMETHING']
+
+
+        files: [
+            "src/foo.h",
+            "src/foo.cpp"
+        ]
+
+        Group {
+            condition: project.hasSpecialFeature
+            prefix: "src/"
+            files: ["specialfeature.cpp", "specialfeature.h"]
+        }
+
+        Group {
+            cpp.defines: {
+                var defines = outer.concat([
+                    'HAVE_MAIN_CPP',
+                    cpp.debugInformation ? '_DEBUG' : '_RELEASE'
+                    ]);
+                if (project.hasSpecialFeature)
+                    defines.push("HAS_SPECIAL_FEATURE");
+                return defines;
+            }
+            prefix: "src/"
+            files: [
+                'main.cpp'
+            ]
+        }
+    }
+}
diff --git a/examples/helloworld-complex/src/foo.cpp b/examples/helloworld-complex/src/foo.cpp
new file mode 100644
index 000000000..126abcdbd
--- /dev/null
+++ b/examples/helloworld-complex/src/foo.cpp
@@ -0,0 +1,9 @@
+#ifndef SOMETHING
+#   error missing define SOMETHING
+#endif
+
+int someUsefulFunction()
+{
+    return 156;
+}
+
diff --git a/examples/helloworld-complex/src/foo.h b/examples/helloworld-complex/src/foo.h
new file mode 100644
index 000000000..1e4fd7b94
--- /dev/null
+++ b/examples/helloworld-complex/src/foo.h
@@ -0,0 +1,7 @@
+#ifndef FOO_H
+#define FOO_H
+
+int someUsefulFunction();
+
+#endif
+
diff --git a/examples/helloworld-complex/src/main.cpp b/examples/helloworld-complex/src/main.cpp
new file mode 100644
index 000000000..2b4313eaf
--- /dev/null
+++ b/examples/helloworld-complex/src/main.cpp
@@ -0,0 +1,29 @@
+#include "foo.h"
+
+#ifdef HAS_SPECIAL_FEATURE
+#include "specialfeature.h"
+#endif
+
+#include <stdio.h>
+
+#ifndef HAVE_MAIN_CPP
+#   error missing define HAVE_MAIN_CPP
+#endif
+
+#ifndef SOMETHING
+#   error missing define SOMETHING
+#endif
+
+int main()
+{
+    someUsefulFunction();
+#ifdef _DEBUG
+    puts("Hello World! (debug version)");
+#else
+    puts("Hello World! (release version)");
+#endif
+#ifdef HAS_SPECIAL_FEATURE
+    bragAboutSpecialFeature();
+#endif
+}
+
diff --git a/examples/helloworld-complex/src/specialfeature.cpp b/examples/helloworld-complex/src/specialfeature.cpp
new file mode 100644
index 000000000..8dad4502f
--- /dev/null
+++ b/examples/helloworld-complex/src/specialfeature.cpp
@@ -0,0 +1,8 @@
+#include "specialfeature.h"
+
+#include <iostream>
+
+void bragAboutSpecialFeature()
+{
+    std::cout << "I have a special feature!" << std::endl;
+}
diff --git a/examples/helloworld-complex/src/specialfeature.h b/examples/helloworld-complex/src/specialfeature.h
new file mode 100644
index 000000000..a3fa53ab0
--- /dev/null
+++ b/examples/helloworld-complex/src/specialfeature.h
@@ -0,0 +1,6 @@
+#ifndef HELLO_SPECIAL_FEATURE
+#define HELLO_SPECIAL_FEATURE
+
+void bragAboutSpecialFeature();
+
+#endif