initial buildroot for linux 5.15

package/gauche/Config.in

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+# Architecture dependency from the bundled bdwgc.
+config BR2_PACKAGE_GAUCHE_ARCH_SUPPORTS
+	bool
+	default y if BR2_arm || BR2_armeb || BR2_i386 || BR2_m68k || \
+		BR2_mips || BR2_mipsel || BR2_mips64 || \
+		BR2_mips64el || BR2_powerpc || BR2_powerpc64 || \
+		BR2_powerpc64le || BR2_sh || BR2_x86_64
+
+config BR2_PACKAGE_GAUCHE
+	bool "gauche"
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	depends on BR2_USE_MMU # fork()
+	depends on BR2_PACKAGE_GAUCHE_ARCH_SUPPORTS
+	depends on !BR2_STATIC_LIBS
+	help
+	  Gauche is an R7RS Scheme implementation developed to be a
+	  handy script interpreter, which allows programmers and
+	  system administrators to write small to large scripts for
+	  their daily chores. Quick startup, built-in system
+	  interface, native multilingual support are some of its
+	  goals.
+
+	  http://practical-scheme.net/gauche/
+
+comment "gauche needs a toolchain w/ NPTL, dynamic library"
+	depends on BR2_USE_MMU
+	depends on BR2_PACKAGE_GAUCHE_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || BR2_STATIC_LIBS

package/gauche/gauche.hash

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+# From https://sourceforge.net/projects/gauche/files/Gauche/
+sha1  ad5e15021764b733ec913cca8b77c9a53d4ee997  Gauche-0.9.9.tgz
+md5  20d8ed835ae0bc97cceed78a71f9857b  Gauche-0.9.9.tgz
+# Locally calculated
+sha256  4ca9325322a7efadb9680d156eb7b53521321c9ca4955c4cbe738bc2e1d7f7fb  Gauche-0.9.9.tgz
+sha256  13cb582677dbcdc5b34313c59b4a014e74ef2f5fd80e514a0bd98fd8a4e45bed  COPYING

package/gauche/gauche.mk

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+################################################################################
+#
+# gauche
+#
+################################################################################
+
+GAUCHE_VERSION = 0.9.9
+GAUCHE_SOURCE = Gauche-$(GAUCHE_VERSION).tgz
+GAUCHE_SITE = http://downloads.sourceforge.net/project/gauche/Gauche
+GAUCHE_LICENSE = BSD-3-Clause, Boehm-gc, SRFI (srfi-11.scm), reload (reload.scm)
+GAUCHE_LICENSE_FILES = COPYING
+GAUCHE_DEPENDENCIES = host-gauche
+# We're patching configure.ac
+GAUCHE_AUTORECONF = YES
+
+HOST_GAUCHE_CONF_OPTS = --without-zlib
+GAUCHE_CONF_OPTS = --without-libatomic-ops
+
+# Enable embedded axTLS
+GAUCHE_TLS_LIBS = axtls
+
+ifeq ($(BR2_PACKAGE_MBEDTLS),y)
+GAUCHE_TLS_LIBS += mbedtls
+GAUCHE_DEPENDENCIES += mbedtls
+endif
+
+GAUCHE_CONF_OPTS += --with-tls="$(GAUCHE_TLS_LIBS)"
+
+ifeq ($(BR2_PACKAGE_ZLIB),y)
+GAUCHE_CONF_OPTS += --with-zlib=$(STAGING_DIR)
+GAUCHE_DEPENDENCIES += zlib
+else
+GAUCHE_CONF_OPTS += --without-zlib
+endif
+
+# Detection of c99 support in configure fails without WCHAR. To enable
+# automatic detection of c99 support by configure, we need to enable
+# WCHAR in toolchain. But actually we do not need WCHAR at gauche
+# runtime. So reuesting WCHAR in toolchain just for automatic detection
+# will be overkill. To solve this, explicitly -std=gnu99 is specified
+# here.
+GAUCHE_CONF_ENV = CFLAGS="$(TARGET_CFLAGS) -std=gnu99"
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))