# SPDX-License-Identifier: GPL-2.0
PLUGINCC := $(CONFIG_PLUGIN_HOSTCC:"%"=%)
GCC_PLUGINS_DIR := $(shell $(CC) -print-file-name=plugin)

ifeq ($(PLUGINCC),$(HOSTCC))
  HOSTLIBS := hostlibs
  HOST_EXTRACFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(srctree)/$(src)
  HOST_EXTRACFLAGS += -std=gnu99 -ggdb -fvisibility=hidden
  HOST_EXTRACFLAGS += -Wall -W
  export HOST_EXTRACFLAGS
else
  HOSTLIBS := hostcxxlibs
  HOST_EXTRACXXFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(srctree)/$(src)
  HOST_EXTRACXXFLAGS += -std=gnu++98 -ggdb -fvisibility=hidden
  HOST_EXTRACXXFLAGS += -fno-rtti -fno-exceptions -fasynchronous-unwind-tables
  HOST_EXTRACXXFLAGS += -Wall -W
#  HOST_EXTRACXXFLAGS += -Wno-format-diag # gcc 10
  HOST_EXTRACXXFLAGS += -Wno-unused-parameter -Wno-narrowing -Wno-c++11-compat
#  HOST_EXTRACXXFLAGS += -Wno-unused-variable
  export HOST_EXTRACXXFLAGS
endif

KBUILD_HOSTLDFLAGS += -Wl,--as-needed

# ensure every plugin has an soname
$(foreach p,$(GCC_PLUGIN),\
	$(eval export HOSTLDLIBS_$(notdir $(p)) += -Wl,-soname=$(notdir $(p))))

# add utilities_plugin.so as link dependency to every other plugin
$(foreach p,$(filter-out utilities_plugin.so,$(GCC_PLUGIN)),$(if $(findstring /,$(p)),\
	$(eval export HOSTLDLIBS_$(notdir $(p)) += -Wl,-rpath='$$$$$$$$ORIGIN/..' $(obj)/utilities_plugin.so),\
	$(eval        HOSTLDLIBS_$(notdir $(p)) += -Wl,-rpath='$$$$ORIGIN'    $(obj)/utilities_plugin.so)))

# ensure utilities_plugin.so is built first
$(addprefix $(obj)/,$(filter-out utilities_plugin.so,$(GCC_PLUGIN)) $(GCC_PLUGIN_SUBDIR)): $(obj)/utilities_plugin.so

export HOSTLIBS

$(obj)/randomize_layout_plugin.o: $(objtree)/$(obj)/randomize_layout_seed.h
quiet_cmd_create_randomize_layout_seed = GENSEED $@
cmd_create_randomize_layout_seed = \
  $(CONFIG_SHELL) $(srctree)/$(src)/gen-random-seed.sh $@ $(objtree)/include/generated/randomize_layout_hash.h
$(objtree)/$(obj)/randomize_layout_seed.h: FORCE
	$(call if_changed,create_randomize_layout_seed)
targets = randomize_layout_seed.h randomize_layout_hash.h

$(HOSTLIBS)-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
always += $($(HOSTLIBS)-y)

$(foreach p,$($(HOSTLIBS)-y:%.so=%),$(eval $(p)-objs := $(p).o))

subdir-y := $(GCC_PLUGIN_SUBDIR)
subdir-  += $(GCC_PLUGIN_SUBDIR)

clean-files += *.so
