kumquat-buildroot/package/erlang/erlang.mk

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################################################################################
#
# erlang
#
################################################################################
# See note below when updating Erlang
ERLANG_VERSION = 17.5
ERLANG_SITE = http://www.erlang.org/download
ERLANG_SOURCE = otp_src_$(ERLANG_VERSION).tar.gz
ERLANG_DEPENDENCIES = host-erlang
ERLANG_LICENSE = EPL
ERLANG_LICENSE_FILES = EPLICENCE
ERLANG_INSTALL_STAGING = YES
package/erlang: fix detection of libatomic_ops For some platforms, hardware-assisted compare-and-swap may not be available, so libatomic_ops will not provide it. However, libatomic_ops can provide a purely software CAS emulation, but must be instructed to do so. erlang just forgot to tell libatomic_ops that it does require CAS. Fix that by defining AO_REQUIRE_CAS before including atmoic_ops.h, like is done in libunwind, as pointed out by Thomas. Also, erlang has a convoluted, mind-alterating set on aclocal.m4 macros, that just forgets to link against -latomic_ops when checking CAS is available, so that even if CAS is available, configure chokes. Since I would like to keep the little sanity I still have, just force linking with -latomic_ops. This is useless when the check is natrally sucessful (i.e. on platforms where CAS is available in HW), but we would eventually link with -latomic_ops there, too; it's just redundant. Overall, just consider that erlang requires libatomic_ops, so forcibly depend on it, it is easier than trying to disable it. We can revisit that whenever someone wants to run erlang on a platform for which there is no libatomic_ops support. Fixes a slew of autobuild ARM failures: http://autobuild.buildroot.org/results/e7b/e7bfc4893dea6b133f0794ef44d50ad89bcb6662/ http://autobuild.buildroot.org/results/3e9/3e9c307f1ec6536482641019dcaa94677f7267a3/ http://autobuild.buildroot.org/results/a85/a85ca414e5b67af46510abd7b610eb5ae8661de4/ [...] [Thomas: fix minor typos in commit log, add dependency on BR2_PACKAGE_LIBATOMIC_ARCH_SUPPORTS to the Erlang comment about thread and shared library dependency.] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Frank Hunleth <fhunleth@troodon-software.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-01-04 15:17:14 +01:00
# Touching erts/configure.in
ERLANG_AUTORECONF = YES
# Whenever updating Erlang, this value should be updated as well, to the
# value of EI_VSN in the file lib/erl_interface/vsn.mk
ERLANG_EI_VSN = 3.7.20
# The configure checks for these functions fail incorrectly
ERLANG_CONF_ENV = ac_cv_func_isnan=yes ac_cv_func_isinf=yes
# Set erl_xcomp variables. See xcomp/erl-xcomp.conf.template
# for documentation.
ERLANG_CONF_ENV += erl_xcomp_sysroot=$(STAGING_DIR)
ERLANG_CONF_OPTS = --without-javac
ERLANG_DEPENDENCIES += libatomic_ops
package/erlang: fix detection of libatomic_ops For some platforms, hardware-assisted compare-and-swap may not be available, so libatomic_ops will not provide it. However, libatomic_ops can provide a purely software CAS emulation, but must be instructed to do so. erlang just forgot to tell libatomic_ops that it does require CAS. Fix that by defining AO_REQUIRE_CAS before including atmoic_ops.h, like is done in libunwind, as pointed out by Thomas. Also, erlang has a convoluted, mind-alterating set on aclocal.m4 macros, that just forgets to link against -latomic_ops when checking CAS is available, so that even if CAS is available, configure chokes. Since I would like to keep the little sanity I still have, just force linking with -latomic_ops. This is useless when the check is natrally sucessful (i.e. on platforms where CAS is available in HW), but we would eventually link with -latomic_ops there, too; it's just redundant. Overall, just consider that erlang requires libatomic_ops, so forcibly depend on it, it is easier than trying to disable it. We can revisit that whenever someone wants to run erlang on a platform for which there is no libatomic_ops support. Fixes a slew of autobuild ARM failures: http://autobuild.buildroot.org/results/e7b/e7bfc4893dea6b133f0794ef44d50ad89bcb6662/ http://autobuild.buildroot.org/results/3e9/3e9c307f1ec6536482641019dcaa94677f7267a3/ http://autobuild.buildroot.org/results/a85/a85ca414e5b67af46510abd7b610eb5ae8661de4/ [...] [Thomas: fix minor typos in commit log, add dependency on BR2_PACKAGE_LIBATOMIC_ARCH_SUPPORTS to the Erlang comment about thread and shared library dependency.] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Frank Hunleth <fhunleth@troodon-software.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-01-04 15:17:14 +01:00
ERLANG_CONF_OPTS += --with-libatomic_ops=$(STAGING_DIR)/usr LIBS=-latomic_ops
# erlang uses openssl for all things crypto. Since the host tools (such as
# rebar) uses crypto, we need to build host-erlang with support for openssl.
HOST_ERLANG_DEPENDENCIES = host-openssl
HOST_ERLANG_CONF_OPTS = --without-javac --with-ssl=$(HOST_DIR)/usr
HOST_ERLANG_CONF_OPTS += --without-termcap
ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),)
ERLANG_CONF_OPTS += --disable-threads
endif
ifeq ($(BR2_PACKAGE_NCURSES),y)
ERLANG_CONF_OPTS += --with-termcap
ERLANG_DEPENDENCIES += ncurses
else
ERLANG_CONF_OPTS += --without-termcap
endif
ifeq ($(BR2_PACKAGE_OPENSSL),y)
ERLANG_CONF_OPTS += --with-ssl
ERLANG_DEPENDENCIES += openssl
else
ERLANG_CONF_OPTS += --without-ssl
endif
ifeq ($(BR2_PACKAGE_ZLIB),y)
ERLANG_CONF_OPTS += --enable-shared-zlib
ERLANG_DEPENDENCIES += zlib
endif
ifeq ($(BR2_PACKAGE_ERLANG_SMP),)
ERLANG_CONF_OPTS += --disable-smp-support
endif
# Remove source, example, gs and wx files from the target
ERLANG_REMOVE_PACKAGES = gs wx
ifneq ($(BR2_PACKAGE_ERLANG_MEGACO),y)
ERLANG_REMOVE_PACKAGES += megaco
endif
define ERLANG_REMOVE_UNUSED
find $(TARGET_DIR)/usr/lib/erlang -type d -name src -prune -exec rm -rf {} \;
find $(TARGET_DIR)/usr/lib/erlang -type d -name examples -prune -exec rm -rf {} \;
for package in $(ERLANG_REMOVE_PACKAGES); do \
rm -rf $(TARGET_DIR)/usr/lib/erlang/lib/$${package}-*; \
done
endef
ERLANG_POST_INSTALL_TARGET_HOOKS += ERLANG_REMOVE_UNUSED
$(eval $(autotools-package))
$(eval $(host-autotools-package))