sunxi-tools/thunks/Makefile
Bernhard Nortmann 55253760e5 thunks: Adjust build system for ARM thunk .h
"make headers" (which in turn invokes "make -C thunks/" should now
build the include files via awk, avoiding the need for ruby.

Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
2017-01-27 23:03:18 +01:00

33 lines
1.0 KiB
Makefile

#
# build "preprocessed" .h files for inclusion of ARM scratch code
#
SPL_THUNK := fel-to-spl-thunk.h
THUNKS := sid_read_root.h
all: $(SPL_THUNK) $(THUNKS)
# clean up object files afterwards
rm -f *.o
# This empty prerequisite enforces a rebuild of all the headers on every run
FORCE:
# If not specified explicitly: try to guess a suitable ARM toolchain prefix
PATH_DIRS := $(shell echo $$PATH | sed -e 's/:/ /g')
CROSS_COMPILE ?= $(shell find $(PATH_DIRS) -executable -name 'arm*-gcc' -printf '%f\t' | cut -f 1 | sed -e 's/-gcc/-/')
AS := $(CROSS_COMPILE)as
OBJDUMP := $(CROSS_COMPILE)objdump
AWK_O_TO_H := awk -f objdump_to_h.awk
# The SPL thunk requires a different output format. The "style" variable for
# awk controls this, and causes the htole32() conversion to be omitted.
fel-to-spl-thunk.h: fel-to-spl-thunk.S FORCE
$(AS) -o $(subst .S,.o,$<) $<
$(OBJDUMP) -d $(subst .S,.o,$<) | $(AWK_O_TO_H) -v style=old > $@
$(THUNKS): %.h: %.S FORCE
$(AS) -o $(subst .S,.o,$<) $<
$(OBJDUMP) -d $(subst .S,.o,$<) | $(AWK_O_TO_H) > $@