# This file is part of mingw-cross-env.
# See doc/index.html for further information.

JOBS               := 1
TARGET             := i686-pc-mingw32
SOURCEFORGE_MIRROR := kent.dl.sourceforge.net

PREFIX     := $(PWD)/usr
LOG_DIR    := $(PWD)/log
TIMESTAMP  := $(shell date +%Y%m%d_%H%M%S)
PKG_DIR    := $(PWD)/pkg
DIST_DIR   := $(PWD)/dist
TMP_DIR     = $(PWD)/tmp-$(1)
MAKEFILE   := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
TOP_DIR    := $(patsubst %/,%,$(dir $(MAKEFILE)))
PATH       := $(PREFIX)/bin:$(PATH)
SHELL      := bash
INSTALL    := $(shell ginstall --help >/dev/null 2>&1 && echo g)install
LIBTOOL    := $(shell glibtool --help >/dev/null 2>&1 && echo g)libtool
LIBTOOLIZE := $(shell glibtoolize --help >/dev/null 2>&1 && echo g)libtoolize
PATCH      := $(shell gpatch --help >/dev/null 2>&1 && echo g)patch
SED        := $(shell gsed --help >/dev/null 2>&1 && echo g)sed
VERSION    := $(shell $(SED) -n 's,^.*<span id="latest-version">\([^<]*\)</span>.*$$,\1,p' '$(TOP_DIR)/doc/index.html')

REQUIREMENTS := autoconf automake bash bison bzip2 cmake flex \
                gcc intltoolize $(LIBTOOL) $(LIBTOOLIZE) \
                $(MAKE) openssl $(PATCH) $(PERL) pkg-config \
                scons $(SED) unzip wget xz yasm

# unexport any environment variables that might cause trouble
unexport AR CC CFLAGS C_INCLUDE_PATH CPATH CPLUS_INCLUDE_PATH CPP
unexport CPPFLAGS CROSS CXX CXXCPP CXXFLAGS EXEEXT EXTRA_CFLAGS
unexport EXTRA_LDFLAGS LD LDFLAGS LIBRARY_PATH LIBS NM
unexport OBJC_INCLUDE_PATH PKG_CONFIG PKG_CONFIG_PATH QMAKESPEC
unexport RANLIB STRIP

SHORT_PKG_VERSION = \
    $(word 1,$(subst ., ,$($(1)_VERSION))).$(word 2,$(subst ., ,$($(1)_VERSION)))

PKGS := $(sort $(patsubst $(TOP_DIR)/src/%.mk,%,$(wildcard $(TOP_DIR)/src/*.mk)))
include $(TOP_DIR)/src/*.mk

UNPACK_ARCHIVE = \
    $(if $(filter %.tgz,     $(1)),tar xzf '$(1)', \
    $(if $(filter %.tar.gz,  $(1)),tar xzf '$(1)', \
    $(if $(filter %.tar.bz2, $(1)),tar xjf '$(1)', \
    $(if $(filter %.tar.lzma,$(1)),xz -dc -F lzma '$(1)' | tar xf -, \
    $(if $(filter %.zip,     $(1)),unzip -q '$(1)', \
    $(error Unknown archive format: $(1)))))))

UNPACK_PKG_ARCHIVE = \
    $(call UNPACK_ARCHIVE,$(PKG_DIR)/$($(1)_FILE))

PKG_CHECKSUM = \
    openssl sha1 '$(PKG_DIR)/$($(1)_FILE)' 2>/dev/null | $(SED) -n 's,^.*\([0-9a-f]\{40\}\)$$,\1,p'

CHECK_PKG_ARCHIVE = \
    [ '$($(1)_CHECKSUM)' == "`$$(call PKG_CHECKSUM,$(1))`" ]

DOWNLOAD_PKG_ARCHIVE = \
    mkdir -p '$(PKG_DIR)' && \
    $(if $($(1)_URL_2), \
        ( wget -T 30 -O - '$($(1)_URL)' || wget -O - '$($(1)_URL_2)' ), \
        wget -O - '$($(1)_URL)') \
    $(if $($(1)_FIX_GZIP), \
        | gzip -d | gzip -9n, \
        ) \
    > '$(PKG_DIR)/$($(1)_FILE)'

SOURCEFORGE_FILES = \
    wget -q -O- '$(1)' | \
    grep 'title="/' | \
    $(SED) -n 's,.*title="\(/[^:]*\).*released on \([0-9-]*\)",\2 \1,p' | \
    sort | \
    $(SED) 's,^[^ ]* ,,'

.PHONY: all
all: $(PKGS)

.PHONY: check-requirements
define CHECK_REQUIREMENT
    @if ! $(1) --help &>/dev/null; then \
        echo; \
        echo 'Missing requirement: $(1)'; \
        echo; \
        echo 'Please have a look at "doc/index.html" to ensure'; \
        echo 'that your system meets all requirements.'; \
        echo; \
        exit 1; \
    fi

endef
check-requirements: $(PREFIX)/installed/check-requirements
$(PREFIX)/installed/check-requirements: $(MAKEFILE)
	@echo '[check requirements]'
	$(foreach REQUIREMENT,$(REQUIREMENTS),$(call CHECK_REQUIREMENT,$(REQUIREMENT)))
	@[ -d '$(PREFIX)/installed' ] || mkdir -p '$(PREFIX)/installed'
	@touch '$@'

.PHONY: download
download: $(addprefix download-,$(PKGS))

define PKG_RULE
.PHONY: download-$(1)
download-$(1): $(addprefix download-,$($(1)_DEPS))
	if ! $(call CHECK_PKG_ARCHIVE,$(1)); then \
	    $(call DOWNLOAD_PKG_ARCHIVE,$(1)); \
	    $(call CHECK_PKG_ARCHIVE,$(1)) || { echo 'Wrong checksum!'; exit 1; }; \
	fi

.PHONY: $(1)
$(1): $(PREFIX)/installed/$(1)
$(PREFIX)/installed/$(1): $(TOP_DIR)/src/$(1).mk \
                          $(wildcard $(TOP_DIR)/src/$(1)-*.patch) \
                          $(wildcard $(TOP_DIR)/src/$(1)-test*) \
                          $(addprefix $(PREFIX)/installed/,$($(1)_DEPS)) \
                          | check-requirements
	@[ -d '$(LOG_DIR)/$(TIMESTAMP)' ] || mkdir -p '$(LOG_DIR)/$(TIMESTAMP)'
	@if ! $(call CHECK_PKG_ARCHIVE,$(1)); then \
	    echo '[download] $(1)'; \
	    ($(call DOWNLOAD_PKG_ARCHIVE,$(1))) &> '$(LOG_DIR)/$(TIMESTAMP)/$(1)-download'; \
	    ln -sf '$(TIMESTAMP)/$(1)-download' '$(LOG_DIR)/$(1)-download'; \
	    if ! $(call CHECK_PKG_ARCHIVE,$(1)); then \
	        echo; \
	        echo 'Wrong checksum of package $(1)!'; \
	        echo '------------------------------------------------------------'; \
	        tail -n 10 '$(LOG_DIR)/$(1)-download' | $(SED) -n '/./p'; \
	        echo '------------------------------------------------------------'; \
	        echo '[log]      $(LOG_DIR)/$(1)-download'; \
	        echo; \
	        exit 1; \
	    fi; \
	fi
	$(if $(value $(1)_BUILD),
	    @echo '[build]    $(1)'
	    ,)
	@touch '$(LOG_DIR)/$(TIMESTAMP)/$(1)'
	@ln -sf '$(TIMESTAMP)/$(1)' '$(LOG_DIR)/$(1)'
	@if ! (time $(MAKE) -f '$(MAKEFILE)' 'build-only-$(1)') &> '$(LOG_DIR)/$(TIMESTAMP)/$(1)'; then \
	    echo; \
	    echo 'Failed to build package $(1)!'; \
	    echo '------------------------------------------------------------'; \
	    tail -n 10 '$(LOG_DIR)/$(1)' | $(SED) -n '/./p'; \
	    echo '------------------------------------------------------------'; \
	    echo '[log]      $(LOG_DIR)/$(1)'; \
	    echo; \
	    exit 1; \
	fi
	@echo '[done]     $(1)'

.PHONY: build-only-$(1)
build-only-$(1):
	$(if $(value $(1)_BUILD),
	    rm -rf   '$(2)'
	    mkdir -p '$(2)'
	    cd '$(2)' && $(call UNPACK_PKG_ARCHIVE,$(1))
	    cd '$(2)/$($(1)_SUBDIR)'
	    $(foreach PKG_PATCH,$(sort $(wildcard $(TOP_DIR)/src/$(1)-*.patch)),
	        (cd '$(2)/$($(1)_SUBDIR)' && $(PATCH) -p1 -u) < $(PKG_PATCH))
	    $$(call $(1)_BUILD,$(2)/$($(1)_SUBDIR),$(TOP_DIR)/src/$(1)-test)
	    rm -rfv  '$(2)'
	    ,)
	[ -d '$(PREFIX)/installed' ] || mkdir -p '$(PREFIX)/installed'
	touch '$(PREFIX)/installed/$(1)'
endef
$(foreach PKG,$(PKGS),$(eval $(call PKG_RULE,$(PKG),$(call TMP_DIR,$(PKG)))))

.PHONY: strip
strip:
	rm -rf \
	    '$(PREFIX)/include' \
	    '$(PREFIX)/info' \
	    '$(PREFIX)/lib/libiberty.a' \
	    '$(PREFIX)/man' \
	    '$(PREFIX)/share' \
	    '$(PREFIX)/$(TARGET)/etc' \
	    '$(PREFIX)/$(TARGET)/doc' \
	    '$(PREFIX)/$(TARGET)/info' \
	    '$(PREFIX)/$(TARGET)/lib'/*.def \
	    '$(PREFIX)/$(TARGET)/man' \
	    '$(PREFIX)/$(TARGET)/sbin'
	-strip -Sx \
	    '$(PREFIX)/bin'/* \
	    '$(PREFIX)/libexec/gcc/$(TARGET)'/*/* \
	    '$(PREFIX)/$(TARGET)/bin'/*
	-$(TARGET)-strip -S \
	    '$(PREFIX)/lib/gcc/$(TARGET)'/*/*.a \
	    '$(PREFIX)/lib/gcc/$(TARGET)'/*/*.o \
	    '$(PREFIX)/$(TARGET)/lib'/*.a \
	    '$(PREFIX)/$(TARGET)/lib'/*.o

.PHONY: clean
clean:
	rm -rf $(call TMP_DIR,*) $(PREFIX)/*

.PHONY: clean-pkg
clean-pkg:
	rm -f $(patsubst %,'%', \
                  $(filter-out \
                      $(foreach PKG,$(PKGS),$(PKG_DIR)/$($(PKG)_FILE)), \
                      $(wildcard $(PKG_DIR)/*)))

.PHONY: update
define UPDATE
    $(if $(2),
        $(if $(filter $(2),$($(1)_IGNORE)),
            $(info IGNORED  $(1)  $(2)),
            $(if $(filter $(2),$($(1)_VERSION)),
                $(info .        $(1)  $(2)),
                $(info NEW      $(1)  $($(1)_VERSION) --> $(2))
                $(SED) 's/^\([^ ]*_VERSION *:=\).*/\1 $(2)/' -i '$(TOP_DIR)/src/$(1).mk'
                $(MAKE) -f '$(MAKEFILE)' 'update-checksum-$(1)' \
                    || { $(SED) 's/^\([^ ]*_VERSION *:=\).*/\1 $($(1)_VERSION)/' -i '$(TOP_DIR)/src/$(1).mk'; \
                         exit 1; })),
        $(error Unable to update version number of package $(1)))

endef
update:
	$(foreach PKG,$(PKGS),$(call UPDATE,$(PKG),$(shell $($(PKG)_UPDATE))))

update-checksum-%:
	$(call DOWNLOAD_PKG_ARCHIVE,$*)
	$(SED) 's/^\([^ ]*_CHECKSUM *:=\).*/\1 '"`$(call PKG_CHECKSUM,$*)`"'/' -i '$(TOP_DIR)/src/$*.mk'

.PHONY: dist
dist:
	[ -d '$(DIST_DIR)' ]          || mkdir -p '$(DIST_DIR)'
	[ -d '$(DIST_DIR)/web' ]      || mkdir    '$(DIST_DIR)/web'
	[ -d '$(DIST_DIR)/releases' ] || mkdir    '$(DIST_DIR)/releases'
	rm -rf '$(DIST_DIR)/mingw-cross-env-$(VERSION)'
	mkdir  '$(DIST_DIR)/mingw-cross-env-$(VERSION)'
	mkdir  '$(DIST_DIR)/mingw-cross-env-$(VERSION)/doc'
	mkdir  '$(DIST_DIR)/mingw-cross-env-$(VERSION)/src'
	( \
	    $(SED) -n '1,/<table id="package-list"/ p' '$(TOP_DIR)/doc/index.html' && \
	    ($(foreach PKG,$(PKGS), \
	        echo '    <tr><td><a href="$($(PKG)_WEBSITE)">$(PKG)</a></td><td>$($(PKG)_VERSION)</td></tr>';)) && \
	    $(SED) -n '/<table id="package-list"/,/<ul id="authors-list"/ p' '$(TOP_DIR)/doc/index.html' | \
	        $(SED) '1d' && \
	    (LC_ALL=en_US.UTF-8 hg log | $(SED) -n 's,^\(user: *\([^<]*\) <.*\|.*(by \([^)]*\)).*\)$$,\2\3,p' | \
	        sort | uniq -c | sort -nr | \
	        $(SED) 's,^ *[0-9]* *\(.*\)$$,    <li>\1</li>,') && \
	    $(SED) '1,/<ul id="authors-list"/ d' '$(TOP_DIR)/doc/index.html' \
	) \
	| $(SED) 's,\(<span class="version">\)[^<]*\(</span>\),\1$(VERSION)\2,g' \
	| $(SED) 's,\(<span class="target">\)[^<]*\(</span>\),\1$(TARGET)\2,g' \
	>'$(DIST_DIR)/mingw-cross-env-$(VERSION)/doc/index.html'
	cp -p '$(TOP_DIR)/doc'/screenshot-* '$(DIST_DIR)/mingw-cross-env-$(VERSION)/doc/'
	cp -p '$(DIST_DIR)/mingw-cross-env-$(VERSION)/doc'/* '$(DIST_DIR)/web/'
	cp -p '$(TOP_DIR)/Makefile'    '$(DIST_DIR)/mingw-cross-env-$(VERSION)/'
	cp -p '$(TOP_DIR)/src'/*.mk    '$(DIST_DIR)/mingw-cross-env-$(VERSION)/src/'
	cp -p '$(TOP_DIR)/src'/*.patch '$(DIST_DIR)/mingw-cross-env-$(VERSION)/src/'
	cp -p '$(TOP_DIR)/src'/*-test* '$(DIST_DIR)/mingw-cross-env-$(VERSION)/src/'
	(cd '$(DIST_DIR)' && tar cvf - 'mingw-cross-env-$(VERSION)' | gzip -9) >'$(DIST_DIR)/releases/mingw-cross-env-$(VERSION).tar.gz'
	rm -rf '$(DIST_DIR)/mingw-cross-env-$(VERSION)'