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# -*- makefile -*-
# vim: set filetype=make :
# Copyright 2022 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Embedded Controller firmware build system - IDE integration support
#
# If env EXTERNAL_TRUNK_PATH is defined, we use this to build the
# absolute path to the ec directory. Otherwise, we just take the abspath of ".".
ide_ec_path_ext = \
$(if $(EXTERNAL_TRUNK_PATH),$(EXTERNAL_TRUNK_PATH)/src/platform/ec)
ide_ec_path_abs = $(abspath .)
ide_ec_path = $(or $(ide_ec_path_ext),$(ide_ec_path_abs))
# Clang doesn't support these GCC options.
ide_cflags = $(filter-out -mno-sched-prolog -fconserve-stack,$(CFLAGS))
# The all-ide-compile-cmds target takes about 2 minutes using 8 cores when all
# work is replaced by the |true| command. Thus, the build system itself
# takes 2m independent of the text manipulation.
.PHONY: all-ide-compile-cmds
all-ide-compile-cmds: $(foreach b, $(BOARDS), ide-compile-cmds-$(b))
ide-compile-cmds-%:
$(MAKE) BOARD=$* V=$(V) ide-compile-cmds
ide-compile-cmds-y = $(out)/RW/compile_commands.json
ide-compile-cmds-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/compile_commands.json
.PHONY: ide-compile-cmds
ide-compile-cmds: $(ide-compile-cmds-y)
# All but the last file/json-object need to have a trailing comma.
#
# The first sed line prepends 4 spaces to all lines and then adds a
# comma + implicit-newline to the end of the last line of the file.
# The second sed line prepends 4 spaces to all lines and then adds an
# implicit new line.
cmd_combine_compile_cmd_json = \
printf '[\n' >$@ ;\
echo $^ | xargs -n1 | head -n-1 | xargs -n1 sed 's/^/ /;$$s/$$/,/' \
>>$@ ;\
sed 's/^/ /' $(lastword $^) >>$@ ;\
printf ']\n' >>$@ ;
$(out)/RW/compile_commands.json: override BLD:=RW
$(out)/RW/compile_commands.json: private objs := $(rw-objs:.o=.json)
$(out)/RW/compile_commands.json: $(rw-objs:.o=.compile_cmd.json)
$(call quiet,combine_compile_cmd_json,COMBINE)
$(out)/RO/compile_commands.json: override BLD:=RO
$(out)/RO/compile_commands.json: private objs := $(ro-objs:.o=.json)
$(out)/RO/compile_commands.json: $(ro-objs:.o=.compile_cmd.json)
$(call quiet,combine_compile_cmd_json,COMBINE)
cmd_c_to_compile_cmd_json = \
printf '{\n' >$@ ;\
printf ' "arguments": [\n' >>$@ ;\
printf ' "%s",\n' cc -c -std=gnu11 $(C_WARN) $(ide_cflags) \
-o $(@D)/$(@F:.compile_cmd.json=.o) >>$@ ;\
printf ' "$<"\n' >>$@ ;\
printf ' ],\n' >>$@ ;\
printf ' "directory": "$(ide_ec_path)",\n' >>$@ ;\
printf ' "file": "$<"\n' >>$@ ;\
printf '}\n' >>$@ ;
$(out)/RO/%.compile_cmd.json:%.c
$(call quiet,c_to_compile_cmd_json,JSON )
$(out)/RW/%.compile_cmd.json:%.c
$(call quiet,c_to_compile_cmd_json,JSON )
$(out)/RO/%.compile_cmd.json:%.S
$(call quiet,c_to_compile_cmd_json,JSON )
$(out)/RW/%.compile_cmd.json:%.S
$(call quiet,c_to_compile_cmd_json,JSON )
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