Minor documentation improvements.

[pub/USBasp.git] / LUFA / Build / lufa.sources.in

diff --git a/LUFA/Build/lufa.sources.in b/LUFA/Build/lufa.sources.in
index 6d28056..d5316ba 100644 (file)
--- a/LUFA/Build/lufa.sources.in
+++ b/LUFA/Build/lufa.sources.in
@@ -6,10 +6,12 @@
 #           www.lufa-lib.org
 #
 
-LUFA_BUILD_MODULES        += SOURCES
-LUFA_BUILD_TARGETS        += 
-LUFA_BUILD_MANDATORY_VARS += LUFA_PATH ARCH
-LUFA_BUILD_OPTIONAL_VARS  += 
+LUFA_BUILD_MODULES         += SOURCES
+LUFA_BUILD_TARGETS         += 
+LUFA_BUILD_MANDATORY_VARS  += LUFA_PATH ARCH
+LUFA_BUILD_OPTIONAL_VARS   += 
+LUFA_BUILD_PROVIDED_VARS   += LUFA_SRC_USB LUFA_SRC_USBCLASS LUFA_SRC_TEMPERATURE LUFA_SRC_SERIAL LUFA_SRC_TWI LUFA_SRC_PLATFORM
+LUFA_BUILD_PROVIDED_MACROS += 
 
 # -----------------------------------------------------------------------------
 #               LUFA Sources Buildsystem Makefile Module.
@@ -33,15 +35,31 @@ LUFA_BUILD_OPTIONAL_VARS  +=
 #
 #    (None)
 #
+# PROVIDED VARIABLES:
+#
+#    LUFA_SRC_USB              - List of LUFA USB driver source files
+#    LUFA_SRC_USBCLASS         - List of LUFA USB Class driver source files
+#    LUFA_SRC_TEMPERATURE      - List of LUFA temperature sensor driver source
+#                                files
+#    LUFA_SRC_SERIAL           - List of LUFA Serial U(S)ART driver source files
+#    LUFA_SRC_TWI              - List of LUFA TWI driver source files
+#    LUFA_SRC_PLATFORM         - List of LUFA architecture specific platform
+#                                management source files
+#
+# PROVIDED MACROS:
+#
+#    (None)
+#
 # -----------------------------------------------------------------------------
 
-# Sanity-check values of mandatory user-supplied variables
-ARCH           ?= $(error Makefile ARCH value not set)
-LUFA_PATH      ?= $(error Makefile LUFA_PATH value not set)
+ERROR_IF_UNSET   = $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
+ERROR_IF_EMPTY   = $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
+ERROR_IF_NONBOOL = $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
 
-ifeq ($(ARCH),)
-   $(error Makefile ARCH option cannot be blank)
-endif
+# Sanity check user supplied values
+$(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
+$(call ERROR_IF_EMPTY, LUFA_PATH)
+$(call ERROR_IF_EMPTY, ARCH)
 
 # Allow LUFA_ROOT_PATH to be overridden elsewhere to support legacy LUFA makefiles
 LUFA_ROOT_PATH ?= $(patsubst %/,%,$(LUFA_PATH))