build: remove bogus client API examples build

The symlink trick made waf go crazy (deleting source files, getting
tangled up in infinite recursion... I wish I was joking). This means we
still can't build the client API examples in a reasonable way using the
include files of the local repository (instead of globally installed
headers). Not building them at all is better than deleting source files.

Instead, provide some manual instructions how to build each example
(except for the Qt examples, which provide qmake project files).

DOCS/client_api_examples/README.md

@@ -8,6 +8,11 @@ cocoa
 
 Shows how to embed the mpv video window in Objective-C/Cocoa.
 
+qt
+--
+
+Shows how to embed the mpv video window in Qt (using normal desktop widgets).
+
 qml
 ---
 
@@ -19,11 +24,6 @@ qml_direct
 Alternative example, which typically avoids a FBO indirection. Might be
 slightly faster, but is less flexible and harder to use.
 
-qt
---
-
-Shows how to embed the mpv video window in Qt (using normal desktop widgets).
-
 simple
 ------
 

DOCS/client_api_examples/cocoa/cocoabasic.m

@@ -3,6 +3,8 @@
 // but that's not quite ready yet.
 // You may need a basic Info.plist and MainMenu.xib to make this work.
 
+// Build with: clang -o cocoabasic cocoabasic.m `pkg-config --libs --cflags mpv`
+
 #include <mpv/client.h>
 
 #include <stdio.h>

DOCS/client_api_examples/simple/simple.c

@@ -1,3 +1,5 @@
+// Build with: gcc -o simple simple.c `pkg-config --libs --cflags mpv`
+
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>