Options: ${opt}_CPPFLAGS?

[Christian Weisgerber]

The Porter's Handbook, 5.12.4. Options Helpers, says:

| For any of the following variables:
| 
|     CFLAGS
|     CXXFLAGS
|     LDLAGS
|     CONFIGURE_ENV
|     MAKE_ENV
|     USES
|     DISTFILES
| 
| If X_ABOVEVARIABLE is defined then its value will be appended to
| ABOVEVARIABLE depending on the status of the option X

... which agrees with bsd.options.mk.  But shouldn't this also
include CPPFLAGS?

-- 
Christian "naddy" Weisgerber                          naddy at mips.inka.de