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kumquat-buildroot/package/python/python.mk
Jérôme Pouiller 2a6001f17a python: fix double format detection 
Python is not able to detect if compiler double representation is
compliant with IEE754:

  checking whether C doubles are little-endian IEEE 754 binary64... no
  checking whether C doubles are big-endian IEEE 754 binary64... no
  checking whether C doubles are ARM mixed-endian IEEE 754 binary64... no

Accordingly 'legacy' mode isused. It is possible to check this at
runtime by check if 'sys.float_repr_style' contains 'short' or
'legacy'. Calculus correctness is not garanteed with 'legacy'.

Problem is better described here:

  http://stackoverflow.com/questions/29920294/what-causes-pythons-float-repr-style-to-use-legacy
  https://bugs.python.org/issue7117

However, all gcc architecture use a representation compliant with
IEE754. So, we can enable it unconditionnaly.

Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
[Thomas: adjust condition to avoid usage of qstrip, suggested by Baruch.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-11-09 21:57:18 +01:00

271 lines
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################################################################################
#
# python
#
################################################################################
PYTHON_VERSION_MAJOR = 2.7
PYTHON_VERSION = $(PYTHON_VERSION_MAJOR).12
PYTHON_SOURCE = Python-$(PYTHON_VERSION).tar.xz
PYTHON_SITE = http://python.org/ftp/python/$(PYTHON_VERSION)
PYTHON_LICENSE = Python software foundation license v2, others
PYTHON_LICENSE_FILES = LICENSE
PYTHON_LIBTOOL_PATCH = NO
# Python needs itself to be built, so in order to cross-compile
# Python, we need to build a host Python first. This host Python is
# also installed in $(HOST_DIR), as it is needed when cross-compiling
# third-party Python modules.
HOST_PYTHON_CONF_OPTS += \
--enable-static \
--without-cxx-main \
--disable-sqlite3 \
--disable-tk \
--with-expat=system \
--disable-curses \
--disable-codecs-cjk \
--disable-nis \
--enable-unicodedata \
--disable-dbm \
--disable-gdbm \
--disable-bsddb \
--disable-test-modules \
--disable-bz2 \
--disable-ssl \
--disable-ossaudiodev \
--disable-pyo-build
# Make sure that LD_LIBRARY_PATH overrides -rpath.
# This is needed because libpython may be installed at the same time that
# python is called.
# Make python believe we don't have 'hg' and 'svn', so that it doesn't
# try to communicate over the network during the build.
HOST_PYTHON_CONF_ENV += \
LDFLAGS="$(HOST_LDFLAGS) -Wl,--enable-new-dtags" \
ac_cv_prog_HAS_HG=/bin/false \
ac_cv_prog_SVNVERSION=/bin/false
# Building host python in parallel sometimes triggers a "Bus error"
# during the execution of "./python setup.py build" in the
# installation step. It is probably due to the installation of a
# shared library taking place in parallel to the execution of
# ./python, causing spurious Bus error. Building host-python with
# MAKE1 has shown to workaround the problem.
HOST_PYTHON_MAKE = $(MAKE1)
PYTHON_DEPENDENCIES = host-python libffi
HOST_PYTHON_DEPENDENCIES = host-expat host-zlib
PYTHON_INSTALL_STAGING = YES
ifeq ($(BR2_PACKAGE_PYTHON_READLINE),y)
PYTHON_DEPENDENCIES += readline
endif
ifeq ($(BR2_PACKAGE_PYTHON_CURSES),y)
PYTHON_DEPENDENCIES += ncurses
else
PYTHON_CONF_OPTS += --disable-curses
endif
ifeq ($(BR2_PACKAGE_PYTHON_PYEXPAT),y)
PYTHON_DEPENDENCIES += expat
PYTHON_CONF_OPTS += --with-expat=system
else
PYTHON_CONF_OPTS += --with-expat=none
endif
ifeq ($(BR2_PACKAGE_PYTHON_BSDDB),y)
PYTHON_DEPENDENCIES += berkeleydb
else
PYTHON_CONF_OPTS += --disable-bsddb
endif
ifeq ($(BR2_PACKAGE_PYTHON_SQLITE),y)
PYTHON_DEPENDENCIES += sqlite
else
PYTHON_CONF_OPTS += --disable-sqlite3
endif
ifeq ($(BR2_PACKAGE_PYTHON_SSL),y)
PYTHON_DEPENDENCIES += openssl
else
PYTHON_CONF_OPTS += --disable-ssl
endif
ifneq ($(BR2_PACKAGE_PYTHON_CODECSCJK),y)
PYTHON_CONF_OPTS += --disable-codecs-cjk
endif
ifneq ($(BR2_PACKAGE_PYTHON_UNICODEDATA),y)
PYTHON_CONF_OPTS += --disable-unicodedata
endif
# Default is UCS2 w/o a conf opt
ifeq ($(BR2_PACKAGE_PYTHON_UCS4),y)
PYTHON_CONF_OPTS += --enable-unicode=ucs4
endif
ifeq ($(BR2_PACKAGE_PYTHON_BZIP2),y)
PYTHON_DEPENDENCIES += bzip2
else
PYTHON_CONF_OPTS += --disable-bz2
endif
ifeq ($(BR2_PACKAGE_PYTHON_ZLIB),y)
PYTHON_DEPENDENCIES += zlib
else
PYTHON_CONF_OPTS += --disable-zlib
endif
ifeq ($(BR2_PACKAGE_PYTHON_HASHLIB),y)
PYTHON_DEPENDENCIES += openssl
endif
ifeq ($(BR2_PACKAGE_PYTHON_OSSAUDIODEV),y)
PYTHON_CONF_OPTS += --enable-ossaudiodev
else
PYTHON_CONF_OPTS += --disable-ossaudiodev
endif
# Make python believe we don't have 'hg' and 'svn', so that it doesn't
# try to communicate over the network during the build.
PYTHON_CONF_ENV += \
ac_cv_have_long_long_format=yes \
ac_cv_file__dev_ptmx=yes \
ac_cv_file__dev_ptc=yes \
ac_cv_working_tzset=yes \
ac_cv_prog_HAS_HG=/bin/false \
ac_cv_prog_SVNVERSION=/bin/false
# GCC is always compliant with IEEE754
ifeq ($(BR2_ENDIAN),"LITTLE")
PYTHON_CONF_ENV += ac_cv_little_endian_double=yes
else
PYTHON_CONF_ENV += ac_cv_big_endian_double=yes
endif
PYTHON_CONF_OPTS += \
--without-cxx-main \
--without-doc-strings \
--with-system-ffi \
--disable-pydoc \
--disable-test-modules \
--disable-lib2to3 \
--disable-gdbm \
--disable-tk \
--disable-nis \
--disable-dbm \
--disable-pyo-build \
--disable-pyc-build
# This is needed to make sure the Python build process doesn't try to
# regenerate those files with the pgen program. Otherwise, it builds
# pgen for the target, and tries to run it on the host.
define PYTHON_TOUCH_GRAMMAR_FILES
touch $(@D)/Include/graminit.h $(@D)/Python/graminit.c
endef
PYTHON_POST_PATCH_HOOKS += PYTHON_TOUCH_GRAMMAR_FILES
#
# Remove useless files. In the config/ directory, only the Makefile
# and the pyconfig.h files are needed at runtime.
#
# idle & smtpd.py have bad shebangs and are mostly samples
#
define PYTHON_REMOVE_USELESS_FILES
rm -f $(TARGET_DIR)/usr/bin/python$(PYTHON_VERSION_MAJOR)-config
rm -f $(TARGET_DIR)/usr/bin/python2-config
rm -f $(TARGET_DIR)/usr/bin/python-config
rm -f $(TARGET_DIR)/usr/bin/smtpd.py
for i in `find $(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/config/ \
-type f -not -name pyconfig.h -a -not -name Makefile` ; do \
rm -f $$i ; \
done
endef
PYTHON_POST_INSTALL_TARGET_HOOKS += PYTHON_REMOVE_USELESS_FILES
#
# Make sure libpython gets stripped out on target
#
define PYTHON_ENSURE_LIBPYTHON_STRIPPED
chmod u+w $(TARGET_DIR)/usr/lib/libpython$(PYTHON_VERSION_MAJOR)*.so
endef
PYTHON_POST_INSTALL_TARGET_HOOKS += PYTHON_ENSURE_LIBPYTHON_STRIPPED
# Always install the python symlink in the target tree
define PYTHON_INSTALL_TARGET_PYTHON_SYMLINK
ln -sf python2 $(TARGET_DIR)/usr/bin/python
endef
PYTHON_POST_INSTALL_TARGET_HOOKS += PYTHON_INSTALL_TARGET_PYTHON_SYMLINK
# Always install the python-config symlink in the staging tree
define PYTHON_INSTALL_STAGING_PYTHON_CONFIG_SYMLINK
ln -sf python2-config $(STAGING_DIR)/usr/bin/python-config
endef
PYTHON_POST_INSTALL_STAGING_HOOKS += PYTHON_INSTALL_STAGING_PYTHON_CONFIG_SYMLINK
PYTHON_AUTORECONF = YES
# Some packages may have build scripts requiring python2.
# Only install the python symlink in the host tree if python3 is not enabled
# for the target, otherwise the default python program may be missing.
ifneq ($(BR2_PACKAGE_PYTHON3),y)
define HOST_PYTHON_INSTALL_PYTHON_SYMLINK
ln -sf python2 $(HOST_DIR)/usr/bin/python
ln -sf python2-config $(HOST_DIR)/usr/bin/python-config
endef
HOST_PYTHON_POST_INSTALL_HOOKS += HOST_PYTHON_INSTALL_PYTHON_SYMLINK
endif
# Provided to other packages
PYTHON_PATH = $(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/sysconfigdata/:$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages/
$(eval $(autotools-package))
$(eval $(host-autotools-package))
define PYTHON_CREATE_PYC_FILES
PYTHONPATH="$(PYTHON_PATH)" \
$(HOST_DIR)/usr/bin/python$(PYTHON_VERSION_MAJOR) \
support/scripts/pycompile.py \
$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)
endef
ifeq ($(BR2_PACKAGE_PYTHON_PYC_ONLY)$(BR2_PACKAGE_PYTHON_PY_PYC),y)
PYTHON_TARGET_FINALIZE_HOOKS += PYTHON_CREATE_PYC_FILES
endif
ifeq ($(BR2_PACKAGE_PYTHON_PYC_ONLY),y)
define PYTHON_REMOVE_PY_FILES
find $(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR) -name '*.py' -print0 | \
xargs -0 --no-run-if-empty rm -f
endef
PYTHON_TARGET_FINALIZE_HOOKS += PYTHON_REMOVE_PY_FILES
endif
# Normally, *.pyc files should not have been compiled, but just in
# case, we make sure we remove all of them.
ifeq ($(BR2_PACKAGE_PYTHON_PY_ONLY),y)
define PYTHON_REMOVE_PYC_FILES
find $(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR) -name '*.pyc' -print0 | \
xargs -0 --no-run-if-empty rm -f
endef
PYTHON_TARGET_FINALIZE_HOOKS += PYTHON_REMOVE_PYC_FILES
endif
# In all cases, we don't want to keep the optimized .pyo files
define PYTHON_REMOVE_PYO_FILES
find $(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR) -name '*.pyo' -print0 | \
xargs -0 --no-run-if-empty rm -f
endef
PYTHON_TARGET_FINALIZE_HOOKS += PYTHON_REMOVE_PYO_FILES
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