initial buildroot for linux 5.15

package/belr/Config.in

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+config BR2_PACKAGE_BELR
+	bool "belr"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS # bctoolbox
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # bctoolbox
+	select BR2_PACKAGE_BCTOOLBOX
+	help
+	  Belr is Belledonne Communications' language recognition
+	  library, written in C++11. It parses text inputs formatted
+	  according to a language defined by an ABNF grammar, such as
+	  the protocols standardized at IETF.
+
+	  https://gitlab.linphone.org/BC/public/belr
+
+comment "belr needs a toolchain w/ threads, C++"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
+
+comment "belr needs a toolchain not affected by GCC bug 64735"
+	depends on BR2_TOOLCHAIN_HAS_GCC_BUG_64735

package/belr/belr.hash

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+# Locally calculated
+sha256  6358aa680193d972c831d677da1652c7f57d7e00649b971d4d9fbdebf4331b48  belr-4.4.8.tar.gz
+sha256  1b3782ccad7b8614100cda30d3faf42fc39f2e97932908c543005053b654ca68  LICENSE.txt

package/belr/belr.mk

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+################################################################################
+#
+# belr
+#
+################################################################################
+
+BELR_VERSION = 4.4.8
+BELR_SITE = https://gitlab.linphone.org/BC/public/belr/-/archive/$(BELR_VERSION)
+BELR_LICENSE = GPL-3.0+
+BELR_LICENSE_FILES = LICENSE.txt
+BELR_INSTALL_STAGING = YES
+BELR_DEPENDENCIES = bctoolbox
+BELR_CONF_OPTS = \
+	-DENABLE_STRICT=OFF \
+	-DENABLE_TESTS=OFF \
+	-DENABLE_TOOLS=OFF
+
+ifeq ($(BR2_STATIC_LIBS),y)
+BELR_CONF_OPTS += -DENABLE_SHARED=OFF -DENABLE_STATIC=ON
+else ifeq ($(BR2_SHARED_STATIC_LIBS),y)
+BELR_CONF_OPTS += -DENABLE_SHARED=ON -DENABLE_STATIC=ON
+else ifeq ($(BR2_SHARED_LIBS),y)
+BELR_CONF_OPTS += -DENABLE_SHARED=ON -DENABLE_STATIC=OFF
+endif
+
+$(eval $(cmake-package))