#!/usr/bin/make -f

PYTHON=python2.7
# Take advantage of PyPy if it's installed
#PYTHON=$(shell command -v pypy > /dev/null && echo pypy || echo python2.7)

# PyPy doesn't harden well, and handles opt and debug itself
BUILDFLAGS_ENV := DEB_BUILD_MAINT_OPTIONS=hardening=-stackprotector,-fortify
BUILDFLAGS_ENV += DEB_CFLAGS_MAINT_STRIP="-O0 -O1 -O2 -O3 -Os -Ofast -g"
export CFLAGS := $(shell $(BUILDFLAGS_ENV) dpkg-buildflags --get CFLAGS)
export LDFLAGS := $(shell $(BUILDFLAGS_ENV) dpkg-buildflags --get LDFLAGS)

export PYPY_USESSION_BASENAME := debian

ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
  OPT := 0
  SANDBOX_OPT := 0
else
  OPT := $(shell dpkg-architecture -iany-i386 || dpkg-architecture -iany-amd64 && echo jit || echo 3)
  SANDBOX_OPT := 2
endif

ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
  SUB_MAKEFLAGS = -j$(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
endif

# dh_python2 is used for pypy-sandbox
%:
	dh $@ --with python2,sphinxdoc

override_dh_auto_configure:
	set -e; \
	mem=$(shell sed -rne 's/^MemTotal: *([0-9]+) kB$$/\1/p' /proc/meminfo); \
	dpkg-architecture -qDEB_BUILD_ARCH | grep -q s390 \
		&& mem=$$(($$mem + $(shell sed -rne 's/^SwapTotal: *([0-9]+) kB$$/\1/p' /proc/meminfo))) || true; \
	req_mem=1400; \
	bits=$(shell dpkg-architecture -qDEB_HOST_ARCH_BITS); \
	[ $$bits -ge 64 ] && req_mem=$$(($$req_mem * 2)) || true; \
	if [ $$(($$req_mem * 1024)) -gt $$mem ]; then \
		echo "You don't have enough RAM to build PyPy."; \
		echo "It's known to require >= $$req_mem MiB on $$bits bit archs."; \
		exit 1; \
	fi

override_dh_auto_build-arch: export TMPDIR = $(CURDIR)/build-tmp
override_dh_auto_build-arch: C_SRC_DIR = $(TMPDIR)/usession-$(PYPY_USESSION_BASENAME)-0/testing_1
override_dh_auto_build-arch:
	rm -rf $(TMPDIR)
	mkdir $(TMPDIR)
	cd pypy/translator/goal && $(PYTHON) -u translate.py --batch --opt=$(OPT) \
	                                     --source targetpypystandalone
	# PyPy captures all make output, so we call it ourselves, to avoid timeouts:
	$(MAKE) -C $(C_SRC_DIR) $(SUB_MAKEFLAGS)
	cp $(C_SRC_DIR)/pypy-c pypy/translator/goal

	# Sandboxed translation:
	rm -rf $(TMPDIR)
	mkdir $(TMPDIR)
	cd pypy/translator/goal && $(PYTHON) -u translate.py --batch \
	                                     --opt=$(SANDBOX_OPT) \
	                                     --sandbox \
	                                     --gc=generation \
	                                     --gcrootfinder=shadowstack \
	                                     --source targetpypystandalone
	$(MAKE) -C $(C_SRC_DIR) $(SUB_MAKEFLAGS)
	cp $(C_SRC_DIR)/pypy-c pypy/translator/goal/pypy-c-sandbox
	rm -rf $(TMPDIR)

	# https://bugs.pypy.org/issue610:
	if [ -x /usr/sbin/execstack ]; then \
		/usr/sbin/execstack --clear-execstack pypy/translator/goal/pypy-c; \
		/usr/sbin/execstack --clear-execstack pypy/translator/goal/pypy-c-sandbox; \
	fi
	$(MAKE) -C pypy/doc man BUILDDIR=$(CURDIR)/build-docs

override_dh_auto_build-indep:
	$(MAKE) -C pypy/doc html BUILDDIR=$(CURDIR)/build-docs

ifeq (,$(findstring nocheck,$(DEB_BUILD_OPTIONS)))
override_dh_auto_test: export TMPDIR = $(CURDIR)/build-tests-tmp
override_dh_auto_test: export HOME = $(TMPDIR)
override_dh_auto_test:
	rm -rf $(TMPDIR) build-tests
	mkdir $(TMPDIR) build-tests
	# Test failures currently ignored
	PYTHONPATH=. $(PYTHON) -u testrunner/runner.py \
	                       --logfile=build-tests/pytest-A.log \
	                       --config=pypy/pytest-A.cfg \
	                       --root=pypy || true
	$(PYTHON) -u pypy/test_all.py \
	          --pypy=pypy/translator/goal/pypy-c \
	          --resultlog=build-tests/lib-python.log \
	          lib-python || true
	pypy/translator/goal/pypy-c -u pypy/test_all.py \
	       --resultlog=build-tests/pypy-c.log \
	       pypy/module/pypyjit/test_pypy_c || true
endif

override_dh_auto_install:
	# Upstream provides no install script

override_dh_auto_clean:
	rm -rf build-*
	# Created by our PEP3147 patch:
	rm -f pypy/doc/config/objspace.magic_tag.txt
	find . -name '*.pyc' -delete
	rm -f pypy/translator/goal/pypy-c*
	rm -f pypy/translator/cli/src/*.exe pypy/translator/cli/src/*.dll
	rm -f include/*.h include/*.inl
	rm -rf pypy/_cache
	rm -f lib_pypy/ctypes_config_cache/_*_cache.py
	rm -f $(filter-out %__init__.py, $(wildcard lib_pypy/ctypes_config_cache/_*_.py))
	rm -f lib-python/modified-2.7/lib2to3/*Grammar*.pickle \
	      pypy/module/test_lib_pypy/ctypes_tests/_ctypes_test.o \
	      pypy/doc/config/commandline*.rst \
	      pypy/doc/config/objspace*.rst \
	      pypy/doc/config/translation*.rst

override_dh_install-arch:
	dh_install -a
	# __init__.py gets included in our glob for architecture-dependant bits of
	# the stdlib
	rm -f debian/pypy/usr/lib/pypy/lib_pypy/ctypes_config_cache/__init__.py

override_dh_install-indep:
	dh_install -i
	# Architecture-dependant bits of the stdlib (shipped in pypy)
	find debian/pypy-lib/usr/lib/pypy/lib_pypy/ctypes_config_cache \
	     \( -name '_*_.py' -a ! -name '__init__.py' \) -delete
	# Architecture-dependant headers (shipped in pypy)
	rm debian/pypy-dev/usr/lib/pypy/include/pypy_*.h

override_dh_fixperms-indep:
	find debian/pypy-lib -name '*.pyc' -delete
	find debian/pypy-lib -name '__pycache__' -delete
	# Don't need these, and lintian will make a noise about them
	find debian/pypy-lib \( -name 'regen' -o -name '*.bat' -o -name 'fetch_*' \) -delete
	# Remove empty directories, because bytecompile-stdlib will
	find debian/pypy-lib/usr/lib/pypy/lib-python -type d -empty -delete
	# Nothing in the stdlib should be executable
	chmod -R a-x+X debian/pypy-lib/usr/lib/pypy/lib*
	# Fix interpreters
	find debian/pypy-lib -name '*.py' -print0 | xargs -0 sed -i -e '1s|^#!.*python.*|#!/usr/bin/pypy|'
	dh_fixperms -i

override_dh_sphinxdoc-arch:
	# dh_sphinxdoc doesn't fail silently when there are no docs

override_dh_compress:
	dh_compress -X.inv -X.txt

override_dh_python2:
	dh_python2 -p python-pypy.translator.sandbox

override_dh_builddeb:
	dh_builddeb -- -Zxz

HG_REPO ?= https://bitbucket.org/pypy/pypy
REV=$(shell dpkg-parsechangelog | sed -rne 's,^Version: .*hg([0-9]+).*,\1,p')
VER=$(shell dpkg-parsechangelog | sed -rne 's,^Version: (.+)\+dfsg-.*,\1,p')
get-packaged-orig-source:
	@echo "You can build this from a local repo by supplying the HG_REPO variable"
	rm -rf pypy-$(VER).orig
	hg clone $(HG_REPO) pypy-$(VER).orig
ifeq (,$(REV))
	cd pypy-$(VER).orig && hg up -r release-$(VER)
else
	cd pypy-$(VER).orig && hg up -r $(REV)
endif
	rm -rf pypy-$(VER).orig/.hg*
	rm pypy-$(VER).orig/lib-python/*2.7/distutils/command/*.exe
	rm pypy-$(VER).orig/pypy/translator/jvm/src/*.jar
	tar -cJ --owner root --group root --mode a+rX \
	    -f pypy_$(VER)+dfsg.orig.tar.xz pypy-$(VER).orig
	rm -rf pypy-$(VER).orig
