CMake: add examples folder to build (optional)

- replace misnamed option 'OPTION_BUILD_EXAMPLES' with 'FLTK_BUILD_TEST'
- add option 'FLTK_BUILD_EXAMPLES' to build apps in examples folder
- move examples/fltk-versions.cxx to test/fltk-versions.cxx
- [Travis-CI] enable option 'FLTK_BUILD_EXAMPLES' for automatic builds

2 files changed, 80 insertions, 2 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index deb6a74cd..be95c25c3 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -37,6 +37,7 @@ elseif (HAVE_ALSA_ASOUNDLIB_H)
   if (LIB_asound)
     set (AUDIOLIBS ${LIB_asound})
   endif (LIB_asound)
+  mark_as_advanced (LIB_asound)
 endif (WIN32)
 
 #######################################################################
@@ -73,6 +74,7 @@ CREATE_EXAMPLE (doublebuffer doublebuffer.cxx fltk ANDROID_OK)
 CREATE_EXAMPLE (editor "editor.cxx;editor-Info.plist" fltk ANDROID_OK)
 CREATE_EXAMPLE (fast_slow fast_slow.fl fltk ANDROID_OK)
 CREATE_EXAMPLE (file_chooser file_chooser.cxx "fltk_images;fltk")
+CREATE_EXAMPLE (fltk-versions fltk-versions.cxx fltk)
 CREATE_EXAMPLE (fonts fonts.cxx fltk)
 CREATE_EXAMPLE (forms forms.cxx "fltk_forms;fltk")
 CREATE_EXAMPLE (hello hello.cxx fltk)
@@ -127,8 +129,6 @@ CREATE_EXAMPLE (valuators valuators.fl fltk)
 CREATE_EXAMPLE (unittests unittests.cxx fltk)
 CREATE_EXAMPLE (windowfocus windowfocus.cxx fltk)
 
-CREATE_EXAMPLE (fltk-versions ../examples/fltk-versions.cxx fltk)
-
 # OpenGL demos...
 if (OPENGL_FOUND)
   CREATE_EXAMPLE (CubeView "CubeMain.cxx;CubeView.cxx;CubeViewUI.fl" "fltk_gl;fltk")
diff --git a/test/fltk-versions.cxx b/test/fltk-versions.cxx
new file mode 100644
index 000000000..ed80c7b1f
--- /dev/null
+++ b/test/fltk-versions.cxx
@@ -0,0 +1,78 @@
+//
+// Library version test program for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2017 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     https://www.fltk.org/COPYING.php
+//
+// Please see the following page on how to report bugs and issues:
+//
+//     https://www.fltk.org/bugs.php
+//
+
+#include <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Box.H>
+#include <FL/fl_ask.H>
+
+#include <stdio.h>
+
+static char version[8][80] = { "","","","","","","","" };
+
+int main(int argc, char **argv) {
+
+  int versions = 0;
+
+  sprintf(version[versions++],"FL_VERSION        = %6.4f",FL_VERSION);
+  sprintf(version[versions++],"Fl::version()     = %6.4f  %s",Fl::version(),
+    (FL_VERSION == Fl::version()) ? "" : "***");
+
+#ifdef FL_API_VERSION
+  sprintf(version[versions++],"FL_API_VERSION    = %6d",FL_API_VERSION);
+  sprintf(version[versions++],"Fl::api_version() = %6d  %s",Fl::api_version(),
+    (FL_API_VERSION == Fl::api_version()) ? "" : "***");
+#endif
+
+#ifdef FL_ABI_VERSION
+  sprintf(version[versions++],"FL_ABI_VERSION    = %6d",FL_ABI_VERSION);
+  sprintf(version[versions++],"Fl::abi_version() = %6d  %s",Fl::abi_version(),
+    (FL_ABI_VERSION == Fl::abi_version()) ? "" : "***");
+#endif
+
+  for (int i=0; i<versions; i++) {
+    printf("%s\n",version[i]);
+  }
+  fflush(stdout);
+
+#ifdef FL_ABI_VERSION
+  if (FL_ABI_VERSION != Fl::abi_version()) {
+    printf("*** FLTK ABI version mismatch: headers = %d, lib = %d ***\n",
+      FL_ABI_VERSION, Fl::abi_version());
+    fflush(stdout);
+    fl_message("*** FLTK ABI version mismatch: headers = %d, lib = %d ***",
+      FL_ABI_VERSION, Fl::abi_version());
+    // exit(1);
+  }
+#endif
+
+  Fl_Window *window = new Fl_Window(670,300);
+
+  Fl_Box *box[8];
+  for (int i=0; i<4; i++) {
+    box[2*i]   = new Fl_Box( 10,40+40*i,320,30,version[2*i]);
+    box[2*i+1] = new Fl_Box(340,40+40*i,320,30,version[2*i+1]);
+  }
+
+  for (int i=0; i<8; i++) {
+    box[i]->labelfont(FL_COURIER);
+    box[i]->align(FL_ALIGN_LEFT | FL_ALIGN_INSIDE);
+  }
+
+  window->end();
+  window->show(argc, argv);
+  return Fl::run();
+}