Initial android support (#17)

* Upload Android armv7 libs

* Fix debug build

* utlvector: fix undefined behavior

* wscript: add --use-ccache option

* wscript: store ccache in a separate directory

* Propertly use gl4es

* fontconfig: fix font detection

* [android]remove fontconfig dependency

* Add build guide for other platforms

Co-authored-by: JusicP <slender87844@gmail.com>
Co-authored-by: nillerusr <nillerusr@users.noreply.github.com>

togl/linuxwin/glentrypoints.cpp

@@ -43,7 +43,7 @@
 #include "tier1.h"
 #include "tier2/tier2.h"
 
-#ifdef _LINUX
+#if defined(_LINUX) && !defined(__ANDROID__)
 #include <GL/glx.h>
 #endif
 
@@ -296,7 +296,7 @@ static bool CheckOpenGLExtension_internal(const char *ext, const int coremajor,
 				return false;
 			}
 		}
-#elif !defined ( OSX )
+#elif !defined ( OSX ) && !defined( __ANDROID__ )
 		if (!ptr)
 		{
 			static CDynamicFunctionOpenGL< true, Display *( APIENTRY *)( ), Display* > glXGetCurrentDisplay("glXGetCurrentDisplay");
@@ -377,10 +377,12 @@ COpenGLEntryPoints::COpenGLEntryPoints()
 	// !!! FIXME:  hint Apple's drivers and not because we rely on the
 	// !!! FIXME:  functionality. If so, just remove this check (and the
 	// !!! FIXME:  GL_NV_fence code entirely).
+#ifndef ANDROID // HACK
  	if ((m_bHave_OpenGL) && ((!m_bHave_GL_NV_fence) && (!m_bHave_GL_ARB_sync) && (!m_bHave_GL_APPLE_fence)))
  	{
  		Error( "Required OpenGL extension \"GL_NV_fence\", \"GL_ARB_sync\", or \"GL_APPLE_fence\" is not supported. Please upgrade your OpenGL driver." );
  	}
+#endif
 
 	// same extension, different name.
 	if (m_bHave_GL_EXT_vertex_array_bgra || m_bHave_GL_ARB_vertex_array_bgra)

togl/wscript

@@ -13,7 +13,6 @@ def options(opt):
 
 def configure(conf):
 	conf.define('TOGL_DLL_EXPORT',1)
-	conf.define('PROTECTED_THINGS_ENABLE',1)
 	conf.env.append_unique('DEFINES',['strncpy=use_Q_strncpy_instead',
 		'_snprintf=use_Q_snprintf_instead'])