Added facility to compile Mesa EGL implementation. Fixed a few issues so that...

third_party/mesa/MesaLib/src/egl/main/eglconfig.c

 /**
  * EGL Configuration (pixel format) functions.
  */
 
 
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
 #include "eglconfig.h"
 #include "egldisplay.h"
@@ skipping 194 matching lines @@
                                     ATTRIB_CRITERION_SPECIAL,
                                     EGL_NONE },
    /* there is a gap before EGL_SAMPLES */
    { 0x3030,                        ATTRIB_TYPE_PSEUDO,
                                     ATTRIB_CRITERION_IGNORE,
                                     0 },
    { EGL_NONE,                      ATTRIB_TYPE_PSEUDO,
                                     ATTRIB_CRITERION_IGNORE,
                                     0 },
 
+#ifdef EGL_NOK_texture_from_pixmap
    { EGL_Y_INVERTED_NOK,            ATTRIB_TYPE_BOOLEAN,
                                     ATTRIB_CRITERION_EXACT,
                                     EGL_DONT_CARE },
+#endif
 
 };
 
 
 /**
  * Return true if a config is valid.  When for_matching is true,
  * EGL_DONT_CARE is accepted as a valid attribute value, and checks
  * for conflicting attribute values are skipped.
  *
  * Note that some attributes are platform-dependent and are not
@@ skipping 254 matching lines @@
       return EGL_FALSE;
 
    /* there are some holes in the range */
    switch (attr) {
    case 0x3030 /* a gap before EGL_SAMPLES */:
    case EGL_NONE:
 #ifdef EGL_VERSION_1_4
    case EGL_MATCH_NATIVE_PIXMAP:
 #endif
       return EGL_FALSE;
+#ifdef EGL_NOK_texture_from_pixmap
    case EGL_Y_INVERTED_NOK:
       return conf->Display->Extensions.NOK_texture_from_pixmap;
+#endif
    default:
       break;
    }
 
    return EGL_TRUE;
 }
 
 /**
  * Initialize a criteria config from the given attribute list.
  * Return EGL_FALSE if any of the attribute is invalid.
@@ skipping 320 matching lines @@
                EGLint config_size, EGLint *num_config)
 {
    if (!num_config)
       return _eglError(EGL_BAD_PARAMETER, "eglGetConfigs");
 
    *num_config = _eglFlattenArray(disp->Configs, (void *) configs,
          sizeof(configs[0]), config_size, _eglFlattenConfig);
 
    return EGL_TRUE;
 }