Fix GTK demo on Linux

samples/gtk/README.md

@@ -4,9 +4,11 @@
  applications with the GTK toolkit.
 
 To build use `./build.sh` script without arguments (or specify `TARGET` variable if cross-compiling).
-To run on Mac install XQuartz X server (https://www.xquartz.org/), and then
+Do not forget to install GTK3.
+On Mac use `port install gtk3`, on Debian flavours of Linux - `apt-get install libgtk-3-dev`.
+To run on Mac also install XQuartz X server (https://www.xquartz.org/), and then
 
-    ./Gtk3Demo
+    ./Gtk3Demo.kexe
 
 Dialog box with the button will be shown, and application will print message
 and terminate on button click.

samples/gtk/build.sh

@@ -6,7 +6,7 @@ DIR=.
 IPREFIX_macbook=-I/opt/local/include
 IPREFIX_linux=-I/usr/include
 LINKER_ARGS_macbook="-L/opt/local/lib -lglib-2.0 -lgdk-3.0 -lgtk-3 -lgio-2.0 -lgobject-2.0"
-LINKER_ARGS_linux="-L/usr/lib/x86_64-linux-gnu -lglib-2.0 -lgdk-3.0 -lgtk-3 -lgio-2.0 -lgobject-2.0"
+LINKER_ARGS_linux="-L/usr/lib/x86_64-linux-gnu -lglib-2.0 -lgdk-3 -lgtk-3 -lgio-2.0 -lgobject-2.0"
 
 if [ x$TARGET == x ]; then
 case "$OSTYPE" in
@@ -26,7 +26,7 @@ COMPILER_ARGS=${!var} # add -opt for an optimized build.
 if [ ! -f $DIR/gtk3.bc ]; then
   echo "Generating GTK stubs (once), may take few mins depending on the hardware..."
   cinterop -J-Xmx8g -copt $IPREFIX/atk-1.0 -copt $IPREFIX/gdk-pixbuf-2.0 -copt $IPREFIX/cairo -copt $IPREFIX/pango-1.0 \
-  -copt -I/opt/local/lib/glib-2.0/include -copt $IPREFIX/gtk-3.0 -copt $IPREFIX/glib-2.0 -def $DIR/gtk3.def \
+  -copt -I/opt/local/lib/glib-2.0/include -copt -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -copt $IPREFIX/gtk-3.0 -copt $IPREFIX/glib-2.0 -def $DIR/gtk3.def \
   -target $TARGET -o $DIR/gtk3.bc || exit 1
 fi
 konanc -target $TARGET $DIR/src -library $DIR/gtk3.bc -linkerArgs "$LINKER_ARGS" -o $DIR/Gtk3Demo.kexe || exit 1