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Add explicit blank checks in the build system for user-set but blank variables that must not be blank.

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This commit is contained in:
Dean Camera 2012-06-03 12:39:53 +00:00
parent 88425d7dab
commit 5af18ba288
5 changed files with 45 additions and 14 deletions
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LUFA/Build/lufa.doxygen.in
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@ -36,7 +36,7 @@ LUFA_BUILD_OPTIONAL_VARS += DOXYGEN_CONF DOXYGEN_FAIL_ON_WARNING DOXYGEN_OVERRI
# -----------------------------------------------------------------------------
# Sanity-check values of mandatory user-supplied variables
LUFA_PATH ?= $(error Makefile LUFA_PATH value not set.)
LUFA_PATH ?= $(error Makefile LUFA_PATH value not set)
# Default values of optionally user-supplied variables
DOXYGEN_CONF ?= Doxygen.conf