Makefile.cross

include defines.mk product.mk

build_dir  ?= build

BUILDS     ?= LINUX_X86_64 LINUX_ARMV7L LINUX_AARCH64 MSWIN32 MSWIN64

native_os   := $(shell uname -o)
native_arch := $(shell uname -m)

LINUX_X86_64_CC  ?= x86_64-linux-gnu-gcc
LINUX_ARMV7L_CC  ?= arm-linux-gnueabi-gcc
LINUX_AARCH64_CC ?= aarch64-linux-gnu-gcc

ifeq ($(native_os),GNU/Linux)
  ifeq ($(native_arch),x86_64)
    LINUX_X86_64_CC  = $(CC)
  else ifeq ($(native_arch),armv7l)
    LINUX_ARMV7L_CC  = $(CC)
  else ifeq ($(native_arch),aarch64)
    LINUX_AARCH64_CC = $(CC)
  endif
endif

define cross_settings
$(eval $(1)_cross_os        = $(2))
$(eval $(1)_cross_arch      = $(3))
$(eval $(1)_cross_cc        = $(4))
$(eval $(1)_exe             = $(6))
$(eval $(1)_dir_suffix      = $$($(1)_cross_os).$$($(1)_cross_arch))
$(eval $(1)_build_dir       = $$(build_dir).$(5))
$(eval $(1)_release_targz   = $(patsubst %.tar.gz,%,$(TARBALLGZ))-$(5).tar.gz)
endef

$(call cross_settings,LINUX_X86_64,linux,x86_64,\
			$(LINUX_X86_64_CC),$$(LINUX_X86_64_dir_suffix),)
$(call cross_settings,LINUX_ARMV7L,linux,armv7l,\
			$(LINUX_ARMV7L_CC),$$(LINUX_ARMV7L_dir_suffix),)
$(call cross_settings,LINUX_AARCH64,linux,aarch64,\
			$(LINUX_AARCH64_CC),$$(LINUX_AARCH64_dir_suffix),)
$(call cross_settings,MSWIN32,win,x86,\
			i686-w64-mingw32-gcc,$$(MSWIN32_cross_os)32,.exe)
$(call cross_settings,MSWIN64,win,x64,\
			x86_64-w64-mingw32-gcc,$$(MSWIN64_cross_os)64,.exe)

BUILD_CMD_call = $(MAKE) \
		CC='$($(1)_cross_cc)' \
		NATIVE_CC='$(CC)' \
		build_dir='$($(1)_build_dir)' \
		E='$($(1)_exe)' \
		tar_extras='$($(1)_tar_extras)' \
		TARBALLGZ='$($(1)_release_targz)' \
		VERSION='$(VERSION)'


all release clean clobber distclean:
	$(foreach v,$(BUILDS),$(call BUILD_CMD_call,$v) '$@'$(nl))


.PHONY: all release clean clobber distclean
.DELETE_ON_ERROR: