################################################################################
#
# icu
#
################################################################################

ICU_VERSION = 78.2
ICU_SOURCE = icu4c-$(ICU_VERSION)-sources.tgz
ICU_SITE = \
	https://github.com/unicode-org/icu/releases/download/release-$(ICU_VERSION)
ICU_LICENSE = ICU License
ICU_LICENSE_FILES = LICENSE
ICU_CPE_ID_VENDOR = unicode
ICU_CPE_ID_PRODUCT = international_components_for_unicode

ICU_DEPENDENCIES = host-icu
ICU_INSTALL_STAGING = YES
ICU_CONFIG_SCRIPTS = icu-config
ICU_CONF_OPTS = \
	--with-cross-build=$(HOST_ICU_DIR)/source \
	--disable-samples \
	--disable-tests

# the icu build process breaks if the TARGET environment variable is
# non-empty
ICU_CONF_ENV += TARGET=""
ICU_MAKE_ENV += TARGET=""
HOST_ICU_CONF_ENV += TARGET=""
HOST_ICU_MAKE_ENV += TARGET=""

# When available, icu prefers to use C++11 atomics, which rely on the
# __atomic builtins. On certain architectures, this requires linking
# with libatomic starting from gcc 4.8.
ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
ICU_CONF_ENV += LIBS="-latomic"
endif

# strtod_l() is not supported by musl; also xlocale.h is missing
ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
ICU_CONF_ENV += ac_cv_func_strtod_l=no
endif

HOST_ICU_CONF_OPTS = \
	--disable-samples \
	--disable-tests \
	--disable-extras \
	--disable-icuio \
	--disable-layout
ICU_SUBDIR = source
HOST_ICU_SUBDIR = source

# ICU build scripting adds paths to LD_LIBRARY_PATH using
#   LD_LIBRARY_PATH="custom-path:${LD_LIBRARY_PATH}"
# which, if LD_LIBRARY_PATH was empty, causes the last search directory
# to be the working directory, causing the build to try to load target
# libraries, possibly crashing the build due to ABI mismatches.
# Workaround by ensuring LD_LIBRARY_PATH is never empty.
# https://unicode-org.atlassian.net/browse/ICU-21417
ifeq ($(LD_LIBRARY_PATH),)
ICU_MAKE_ENV += LD_LIBRARY_PATH=/dev/null
endif

ICU_CUSTOM_DATA_PATH = $(call qstrip,$(BR2_PACKAGE_ICU_CUSTOM_DATA_PATH))

ifneq ($(ICU_CUSTOM_DATA_PATH),)
define ICU_COPY_CUSTOM_DATA
	cp $(ICU_CUSTOM_DATA_PATH) $(@D)/source/data/in/
endef
ICU_POST_PATCH_HOOKS += ICU_COPY_CUSTOM_DATA
endif

define ICU_REMOVE_DEV_FILES
	rm -f $(addprefix $(TARGET_DIR)/usr/bin/,derb genbrk gencfu gencnval gendict genrb icuinfo makeconv uconv)
	rm -f $(addprefix $(TARGET_DIR)/usr/sbin/,genccode gencmn gennorm2 gensprep icupkg)
	rm -rf $(TARGET_DIR)/usr/share/icu
endef
ICU_POST_INSTALL_TARGET_HOOKS += ICU_REMOVE_DEV_FILES

$(eval $(autotools-package))
$(eval $(host-autotools-package))
