LICENSE   := MIT
DOWNLOADS := ffi.archive
VERSION   := 3.2.1

URL(ffi) := https://github.com/libffi/libffi/archive/v$(VERSION).tar.gz
SHA(ffi) := 96d08dee6f262beea1a18ac9a3801f64018dc4521895e9198d029d6850febe23
DIR(ffi) := src/lib/ffi

$(call check_tool,sed)

DIRS := include/ffi/spec/x86_32 include/ffi/spec/x86_64 \
        include/ffi/spec/arm include/ffi/spec/arm_64

DIR_CONTENT(include/ffi/spec/x86_32) := src/lib/ffi/src/x86/ffitarget.h
DIR_CONTENT(include/ffi/spec/x86_64) := src/lib/ffi/src/x86/ffitarget.h
DIR_CONTENT(include/ffi/spec/arm)    := src/lib/ffi/src/arm/ffitarget.h
DIR_CONTENT(include/ffi/spec/arm_64) := src/lib/ffi/src/aarch64/ffitarget.h

gen_inc   := ffi.h

gen_files := $(addprefix include/ffi/spec/x86_32/,$(gen_inc)) \
             $(addprefix include/ffi/spec/x86_64/,$(gen_inc)) \
             $(addprefix include/ffi/spec/arm/,$(gen_inc)) \
             $(addprefix include/ffi/spec/arm_64/,$(gen_inc))

default: $(gen_files)

$(gen_files): _dirs

subst_x86_32 := \
	"@TARGET@/X86" \
	"@HAVE_LONG_DOUBLE@/0" \
	"@HAVE_LONG_DOUBLE_VARIANT@/0" \
	"@FFI_EXEC_TRAMPOLINE_TABLE@/0"

subst_x86_64 := \
	"@TARGET@/X86_64" \
	"@HAVE_LONG_DOUBLE@/1" \
	"@HAVE_LONG_DOUBLE_VARIANT@/0" \
	"@FFI_EXEC_TRAMPOLINE_TABLE@/0"

subst_ARM := \
	"@TARGET@/ARM" \
	"@HAVE_LONG_DOUBLE@/0" \
	"@HAVE_LONG_DOUBLE_VARIANT@/0" \
	"@FFI_EXEC_TRAMPOLINE_TABLE@/0"

subst_ARM_64 := \
	"@TARGET@/AARCH64" \
	"@HAVE_LONG_DOUBLE@/0" \
	"@HAVE_LONG_DOUBLE_VARIANT@/0" \
	"@FFI_EXEC_TRAMPOLINE_TABLE@/0"

apply_substitutions = $(VERBOSE)for i in $(2); do sed -i "s/$$i/g" $(1); done

include/ffi/spec/x86_32/ffi.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)cp src/lib/ffi/include/ffi.h.in $@
	$(call apply_substitutions,$@,$(subst_x86_32))

include/ffi/spec/x86_64/ffi.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)cp src/lib/ffi/include/ffi.h.in $@
	$(call apply_substitutions,$@,$(subst_x86_64))

include/ffi/spec/arm/ffi.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)cp src/lib/ffi/include/ffi.h.in $@
	$(call apply_substitutions,$@,$(subst_ARM))

include/ffi/spec/arm_64/ffi.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)cp src/lib/ffi/include/ffi.h.in $@
	$(call apply_substitutions,$@,$(subst_ARM_64))