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

include /usr/share/dpkg/pkg-info.mk
include /usr/share/dpkg/architecture.mk
include /usr/share/dpkg/buildflags.mk
RUSTFLAGS = -C link-args="$(LDFLAGS)"
export CFLAGS CXXFLAGS CPPFLAGS LDFLAGS RUSTFLAGS

# Defines DEB_*_RUST_TYPE triples
include debian/architecture.mk

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

# When using sudo pbuilder, this will cause mk/install.mk to run sudo,
# but we don't need sudo as a build-dep for the package if we unexport
# the SUDO_USER variable.
unexport SUDO_USER

# src/rt/miniz.c (incorrectly) triggers -Wmisleading-indentation with
# gcc-6.  See bug #811573.
CFLAGS += -Wno-misleading-indentation

# Debhelper clears MAKEFLAGS, so we have to do this again for any
# target where we call $(MAKE) directly.  Boo.
DEB_PARALLEL_JOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
PMAKE = $(MAKE) $(if $(DEB_PARALLEL_JOBS),-j$(DEB_PARALLEL_JOBS))

# Release type (one of beta, stable or nightly)
RELEASE_CHANNEL := stable
# See also ./build-preview-dsc.sh for a script that builds a beta/nightly .dsc
# out of this packaging. Furthermore, if the build breaks after importing a new
# upstream stable release, check the do_temporary_fixup function in that file
# to see if we already know what fix to make.

DEB_DESTDIR := $(CURDIR)/debian/tmp

RUST_VERSION := $(shell dpkg-parsechangelog --show-field Version | sed -re 's/([^.]+)\.([^.]+)\..*/\1.\2/')
LIBSTD_PKG := libstd-rust-$(RUST_VERSION)

# These are the normal build flags
DEB_CONFIGURE_FLAGS = \
               --host=$(DEB_HOST_RUST_TYPE) \
               --target=$(DEB_TARGET_RUST_TYPE) \
               --disable-manage-submodules \
               --release-channel=$(RELEASE_CHANNEL) \
               --prefix=/usr

# Use system LLVM (comment out to use vendored LLVM)
DEB_CONFIGURE_FLAGS += --llvm-root=/usr/lib/llvm-3.7

ifeq (,$(findstring dlstage0,$(DEB_BUILD_PROFILES)))
# Without these options, a pre-built stage0 will be downloaded from
# rust-lang.org at build time (or looked for in dl/).
  #DEB_CONFIGURE_FLAGS += --enable-local-rust --local-rust-root=/usr
endif

BUILD_DOCS = 1
ifneq (,$(findstring nodoc,$(DEB_BUILD_PROFILES)))
  DEB_CONFIGURE_FLAGS += --disable-docs
  BUILD_DOCS =
endif

ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
  DEB_CONFIGURE_FLAGS += --disable-optimize --disable-optimize-cxx --disable-optimize-llvm
endif


%:
	dh $@ --parallel

# Note: SHELL is not set by dash, but the configure script wants to use it
override_dh_auto_configure:
	SHELL=/bin/sh PATH="$$PWD/debian/bin:$$PATH" \
	    ./configure $(DEB_CONFIGURE_FLAGS)
#	test "$$($(MAKE) --no-print-directory print-CFG_FILENAME_EXTRA | tail -n1 | cut -d= -f2)" = "$$(echo $(RUST_VERSION))"


override_dh_auto_clean:
	set -e; \
	if [ -f Makefile ]; then \
	  $(PMAKE) clean-all; \
	  $(RM) Makefile config.stamp; \
	fi
	$(RM) src/etc/snapshot.pyc

override_dh_auto_build-arch:
	dh_auto_build -- all VERBOSE=1

override_dh_auto_build-indep:
	$(if $(BUILD_DOCS),dh_auto_build -- docs)

override_dh_auto_install:
	dh_auto_install --destdir=$(DEB_DESTDIR)

	mkdir -p $(DEB_DESTDIR)/usr/lib/$(DEB_HOST_MULTIARCH)/
	mv $(DEB_DESTDIR)/usr/lib/lib*.so $(DEB_DESTDIR)/usr/lib/$(DEB_HOST_MULTIARCH)/

	# Replace duplicated compile-time/run-time dylibs with symlinks
	@set -e; \
	for f in $(DEB_DESTDIR)/usr/lib/rustlib/$(DEB_HOST_RUST_TYPE)/lib/lib*.so; do \
	  name=$${f##*/}; \
	  if [ -f "$(DEB_DESTDIR)/usr/lib/$(DEB_HOST_MULTIARCH)/$$name" ]; then \
	    echo "ln -sf ../../../$(DEB_HOST_MULTIARCH)/$$name $$f"; \
	    ln -sf ../../../$(DEB_HOST_MULTIARCH)/$$name $$f; \
	  fi; \
	done

ifneq (,$(BUILD_DOCS))
	# Brute force to remove privacy-breach-logo lintian warning.
	# We could have updated the upstream sources but it would complexify
	# the rebase
	@set -e; \
	find $(DEB_DESTDIR)/usr/share/doc/rust/html -iname '*.html' | \
	while read file; do \
	  topdir=$$(echo "$$file" | sed 's,^$(DEB_DESTDIR)/usr/share/doc/rust/html/,,; s,/[^/]*$$,/,; s,^[^/]*$$,,; s,[^/]\+/,../,g'); \
	  sed -i -e "s,https://doc.rust-lang.org/\(favicon.ico\|logos/rust-logo-32x32-blk.png\),$${topdir}rust-logo-32x32-blk.png," \
              -e "s,https://www.rust-lang.org/\(favicon.ico\|logos/rust-logo-32x32-blk.png\),$${topdir}rust-logo-32x32-blk.png," "$$file"; \
	done

	find $(DEB_DESTDIR) \( -iname '*.html' -empty -o -name .lock -o -name '*.inc' \) -delete
endif

override_dh_install-arch:
	dh_install
	dh_install -p$(LIBSTD_PKG) usr/lib/$(DEB_HOST_MULTIARCH)/

	chmod -x \
	  debian/rust-gdb/usr/share/rust-gdb/*.py \
	  debian/rust-lldb/usr/share/rust-lldb/*.py

override_dh_installchangelogs:
	dh_installchangelogs RELEASES.md

override_dh_installdocs:
	dh_installdocs -X.tex -X.aux -X.log -X.out -X.toc

override_dh_compress:
	dh_compress -X.woff

override_dh_auto_test:
ifeq (, $(filter nocheck,$(DEB_BUILD_OPTIONS)))
	RUST_BACKTRACE=1 $(PMAKE) VERBOSE=1 check-notidy
endif

override_dh_makeshlibs:
	dh_makeshlibs -V

	# dh_makeshlibs doesn't support our "libfoo-version.so" naming
	# structure, so we have to do this ourselves.
	install -o 0 -g 0 -d debian/$(LIBSTD_PKG)/DEBIAN
	ls debian/$(LIBSTD_PKG)/usr/lib/$(DEB_HOST_MULTIARCH)/lib*.so | \
	sed -n 's,^.*/\(lib.*\)-\(.\+\)\.so$$,\1 \2,p' | \
	while read name version; do \
	  echo "$$name $$version $(LIBSTD_PKG) (>= $(DEB_VERSION_UPSTREAM))"; \
	done > debian/$(LIBSTD_PKG)/DEBIAN/shlibs
	chmod 644 debian/$(LIBSTD_PKG)/DEBIAN/shlibs
	chown 0:0 debian/$(LIBSTD_PKG)/DEBIAN/shlibs

override_dh_shlibdeps:
	dh_shlibdeps -- -x$(LIBSTD_PKG)