allow installing include files; do not install test application

Makefile

@@ -9,3 +9,11 @@ clean:
 .PHONY: distclean
 distclean:
 	./waf distclean
+
+.PHONY: install
+install:
+	./waf install
+
+.PHONY: uninstall
+uninstall:
+	./waf uninstall

wscript

@@ -1,6 +1,7 @@
 def options(opt):
     opt.load("compiler_c compiler_cxx")
-    opt.add_option("--without-tests",
+    opt.add_option(
+            "--without-tests",
             action = "store_true",
             dest = "without_tests",
             default = False,
@@ -25,9 +26,16 @@ def build(bld):
     if not bld.env.WITHOUT_TESTS:
         test_sources = bld.path.ant_glob("test/**/*.cpp") + \
                        bld.path.ant_glob("test/**/*.c")
-        bld.program(source = test_sources,
+        bld.program(
+                source = test_sources,
                 target = "glcxx-test",
                 use = "glcxx",
                 uselib = "SDL2",
                 lib = ["dl", "GL"],
-                linkflags = ["-Wl,-rpath,$ORIGIN"])
+                linkflags = ["-Wl,-rpath,$ORIGIN"],
+                install_path = None)
+
+    bld.install_files(
+            "${PREFIX}",
+            bld.path.ant_glob("include/**"),
+            relative_trick = True)