#!/usr/bin/make -f
# -*- makefile -*-

# Uncomment this to turn on verbose mode.
# export DH_VERBOSE=1

include /usr/share/dpkg/architecture.mk
include /usr/share/dpkg/pkg-info.mk

TARGET := arm-none-eabi

TOP_DIR := $(shell pwd)
BUILD_DIR := $(TOP_DIR)/build/
BUILD_NANO_DIR := $(TOP_DIR)/build_nano/
TMP_DIR := debian/tmp
TMP_NANO_DIR := debian/tmp_nano

CFLAGS := CFLAGS="-g -O2 -ffunction-sections -fdata-sections"
CFLAGS_NANO := CFLAGS="-g -Os -ffunction-sections -fdata-sections -fshort-wchar"

TARGET_TOOLS =  \
	CC_FOR_TARGET=$(TARGET)-gcc \
	GCC_FOR_TARGET=$(TARGET)-gcc \
	AR_FOR_TARGET=$(TARGET)-ar \
	AS_FOR_TARGET=$(TARGET)-as \
	LD_FOR_TARGET=$(TARGET)-ld \
	NM_FOR_TARGET=$(TARGET)-nm \
	OBJDUMP_FOR_TARGET=$(TARGET)-objdump \
	RANLIB_FOR_TARGET=$(TARGET)-ranlib \
	READELF_FOR_TARGET=$(TARGET)-readelf \
	STRIP_FOR_TARGET=$(TARGET)-strip

CONFIGURE_COMMON_FLAGS = \
	--host=$(DEB_HOST_MULTIARCH) \
	--target=$(TARGET) \
	--prefix=/usr/lib \
	--libdir=/usr/lib \
	--infodir=/usr/share/doc/$(DEB_SOURCE)/info \
	--mandir=/usr/share/man \
	--htmldir=/usr/share/doc/$(DEB_SOURCE)/html \
	--pdfdir=/usr/share/doc/$(DEB_SOURCE)/pdf \
	--with-pkgversion=$(DEB_VERSION) \
	--disable-newlib-supplied-syscalls \
	--disable-nls \
	$(TARGET_TOOLS)

CONFIGURE_FLAGS = \
	--enable-newlib-io-long-long \
	--enable-newlib-register-fini \
	$(CFLAGS) \
	$(CONFIGURE_COMMON_FLAGS)

CONFIGURE_FLAGS_NANO = \
	--enable-newlib-reent-small \
	--disable-newlib-fvwrite-in-streamio \
	--disable-newlib-fseek-optimization \
	--disable-newlib-wide-orient \
	--enable-newlib-nano-malloc \
	--disable-newlib-unbuf-stream-opt \
	--enable-lite-exit \
	--enable-newlib-global-atexit \
	--enable-newlib-nano-formatted-io \
	$(CFLAGS_NANO) \
	$(CONFIGURE_COMMON_FLAGS)

%:
	dh $@ -B$(BUILD_DIR) --with autotools-dev --parallel

override_dh_clean:
	dh_clean
	rm -rf $(BUILD_DIR) $(BUILD_NANO_DIR) $(TMP_NANO_DIR)

override_dh_auto_configure:
	dh_auto_configure -B$(BUILD_DIR) -- $(CONFIGURE_FLAGS)
	dh_auto_configure -B$(BUILD_NANO_DIR) -- $(CONFIGURE_FLAGS_NANO)

override_dh_auto_test:
	dh_auto_test -B$(BUILD_DIR)
	dh_auto_test -B$(BUILD_NANO_DIR)

override_dh_auto_build:
	dh_auto_build -B$(BUILD_DIR)
	dh_auto_build -B$(BUILD_NANO_DIR)

override_dh_auto_install:
	dh_auto_install -B$(BUILD_DIR) --max-parallel=1
	dh_auto_install -B$(BUILD_NANO_DIR) --destdir debian/tmp_nano --max-parallel=1
	#
	# Rename nano lib* files to lib*_nano
	find $(TMP_NANO_DIR) -regex ".*/lib\(c\|g\|rdimon\)\.a" \
		-exec rename 's@$(TMP_NANO_DIR)/(.*).a@$(TMP_DIR)/$$1_nano.a@' \{\} \+
	#
	# Move nano's version of newlib.h to nano/newlib.h
	mkdir -p $(TMP_DIR)/usr/lib/$(TARGET)/include/nano
	mv $(TMP_NANO_DIR)/usr/lib/$(TARGET)/include/newlib.h \
           $(TMP_DIR)/usr/lib/$(TARGET)/include/nano/newlib.h

override_dh_installchangelogs:
	dh_installchangelogs ChangeLog

override_dh_installdocs:
	set -ex; \
		cd $(BUILD_DIR)/$(TARGET)/newlib; \
		make html-recursive; \
		cd -;
	dh_installdocs