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-rw-r--r--Makefile.rules25
1 files changed, 14 insertions, 11 deletions
diff --git a/Makefile.rules b/Makefile.rules
index efc9c1e23e..2dae63a26e 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -456,19 +456,22 @@ endif
help:
@echo "Google Chromium EC build"
@echo "Common Targets:"
- @echo " all [BOARD=] - Build a single board (Default target)"
- @echo " clean [BOARD=] - Clean a single board"
- @echo " buildall - Build and test all boards"
- @echo " clobber - Clean all boards"
- @echo " proj-<boardname> - Build a single board (similar to 'all BOARD=boardname')"
- @echo " savesizes - Save the filesizes of currently built boards for comparison"
- @echo " newsizes - Compare previously saved filesizes against new sizes"
+ @echo " all [BOARD=] - Build a single board (Default target)"
+ @echo " clean [BOARD=] - Clean a single board"
+ @echo " buildall - Build and test all boards"
+ @echo " clobber - Clean all boards"
+ @echo " proj-<boardname> - Build a single board (similar to 'all BOARD=boardname')"
+ @echo " savesizes - Save the filesizes of currently built boards for comparison"
+ @echo " newsizes - Compare previously saved filesizes against new sizes"
@echo "Common Variables:"
- @echo " BOARD= - Set the board name to build (Default is $(BOARD))"
- @echo " CROSS_COMPILE= - Set the compiler for the board"
- @echo " V=1 - Show make output"
+ @echo " V=1 - Show make output"
+ @echo " BOARD= - Set the board name to build (Default is $(BOARD))"
+ @echo " CROSS_COMPILE= - Set the compiler for the board"
+ @echo " CROSS_COMPILE_arch= - Set the compiler for arch"
+ @echo " The board picks its CROSS_COMPILE_arch if CROSS_COMPILE is not set."
+ @echo " arch may be one of 'arm', 'i386', 'nds32'."
@echo "Example:"
- @echo " make BOARD=reef CROSS_COMPILE='arm-eabi-'"
+ @echo " make BOARD=reef CROSS_COMPILE_arm='arm-eabi-'"
.PHONY: savesizes
savesizes: