Makefile

# Host CC
HOSTCC ?= gcc
# Toolchain prefix and gcc/g++ executables
CHOST ?= arm-none-linux-gnueabi
CROSSCC  ?= $(and $(CHOST),$(CHOST)-)gcc
CROSSCXX ?= $(and $(CHOST),$(CHOST)-)g++

# CROSS_DIR is the main directory of the toolchain,
# which is only used for trying to autolocate GCCPLUGIN_DIR,
# that is set to the directory containing gcc-plugin.h
CROSS_DIR ?= $(dir $(shell $(CROSSCC) -print-libgcc-file-name))
GCCPLUGIN_DIR ?= $(shell find $(CROSS_DIR) -name gcc-plugin.h | head -n 1 | xargs dirname)

PLUGIN_CPPFLAGS = $(CPPFLAGS) -I$(GCCPLUGIN_DIR)

PLUGIN = gcc-lua/gcc/gcclua
PLUGINLIB = $(PLUGIN).so

all: | patch $(PLUGINLIB)

patch: .patched

APPLY_PATCH = patch --batch --forward -p1 -d $1 -i $(abspath $2)
UNPATCH = git -C $1 reset --hard && git -C $1 clean -fxdq

.patched:
	$(call UNPATCH,gcc-lua)
	$(call UNPATCH,gcc-lua-cdecl)
	$(call APPLY_PATCH,gcc-lua,gcc-lua-prefer-luajit.patch)
	$(call APPLY_PATCH,gcc-lua-cdecl,gcc-lua-cdecl-do-not-mangle-c99-types.patch)
	touch $@

unpatch:
	$(call UNPATCH,gcc-lua)
	$(call UNPATCH,gcc-lua-cdecl)
	rm -f .patched

clean:
	$(MAKE) -C gcc-lua clean

test: test-ffi-cdecl test-gcc-lua test-gcc-lua-cdecl
test-ffi-cdecl: $(PLUGINLIB)
	./ffi-cdecl '$(CROSSCC)' test/util.c test/util.lua
	# FIXME: Either I broke it, or this doesn't work anymore...
	#./ffi-cdecl '$(CROSSCXX)' test/sample.cpp test/sample.lua
test-gcc-lua: $(PLUGINLIB)
	$(MAKE) CC='$(CROSSCC)' CXX='$(CROSSCXX)' GCCLUA='../../$(PLUGINLIB)' -C gcc-lua test
test-gcc-lua-cdecl: $(PLUGINLIB)
	$(MAKE) CC='$(CROSSCC)' CXX='$(CROSSCXX)' GCCLUA='../../$(PLUGINLIB)' -C gcc-lua-cdecl test

$(PLUGINLIB): $(GCCVER) $(PLUGIN).c
	$(MAKE) HOST_CC='$(HOSTCC)' TARGET_CC='$(CROSSCC)' CPPFLAGS='$(PLUGIN_CPPFLAGS)' \
		-C gcc-lua gcc