chicken-scheme: add package

Signed-off-by: Jeronimo Pellegrini <j_p@aleph0.info>

Maintainer: myself ( Jeronimo Pellegrini <j_p@aleph0.info> )

Compile tested: compiles on x86_64, target mips (AR7xxx), OpenWRT master
  and OpenWRT 18.06.2
Run tested: on AR7xxx (TP-Link Archer C7 v.4)

Description:
This is an efficient Scheme interpreter, which comes with several
modules for networking, filesystem access, and other useful tasks.
It can be used as scripting language for automating tasks, by users
who prefer dynamic functional languages over imperative or
object-oriented ones.

lang/chicken-scheme/Makefile

@@ -0,0 +1,61 @@
+#
+# Copyright (C) 2019 Jerônimo Cordoni Pellegrini <j_p@aleph0.info>
+#
+# This file is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for details
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=chicken-scheme-interpreter
+PKG_VERSION=5.0.0
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/chicken-$(PKG_VERSION)
+PKG_SOURCE:=chicken-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://code.call-cc.org/releases/5.0.0/
+PKG_HASH:=a8b94bb94c5d6a4348cedd75dc334ac80924bcd9a7a7a3d6af5121e57ef66595
+
+PKG_LICENSE:=BSD-3-Clause
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/chicken-scheme-interpreter
+SECTION:=lang
+CATEGORY:=Languages
+TITLE:=Chicken Scheme
+URL:=https://call-cc.org
+MAINTAINER:=Jeronimo Pellegrini <j_p@aleph0.info>
+endef
+
+define Package/chicken-scheme-interpreter/description
+  Chicken is an implementation of the Scheme language. It is portable, efficient, and supports 
+  the R5RS and R7RS (work in progress) standards, and many extensions.
+  Chicken can be used as a scripting language to automate tasks.
+  This package contains the interpreter, 'csi', only --
+  the compiler and the package installer are not included because they depend on a C compiler.
+  For more information, please refer to the Chicken Scheme website at https://call-cc.org.
+endef
+
+MAKE_FLAGS += PLATFORM=linux C_COMPILER=$(TARGET_CC) LINKER=$(TARGET_CC) PREFIX=/usr C_COMPILER_OPTIMIZATION_OPTIONS="$(TARGET_CFLAGS)"
+
+# not installed:
+# - csc and chicken, the compiler
+# - the include dir (only useful with the compiler)
+# - install, uninstall, status, and chicken-do, which deal with modules (installation of more modules depends on the compiler)
+# - profiler
+# - feathers, the debugger
+# - libchicken.a, the static library
+define Package/chicken-scheme-interpreter/install
+	$(INSTALL_DIR)  $(1)/usr/bin
+	$(INSTALL_DIR)  $(1)/usr/lib/chicken/9
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/csi    $(1)/usr/bin/
+	$(CP) $(PKG_BUILD_DIR)/libchicken.so.9 $(1)/usr/lib/
+	$(CP) $(PKG_BUILD_DIR)/libchicken.so   $(1)/usr/lib/
+	$(CP) $(PKG_BUILD_DIR)/*.import.so     $(1)/usr/lib/chicken/9/
+	$(CP) $(PKG_BUILD_DIR)/types.db        $(1)/usr/lib/chicken/9/
+endef
+
+$(eval $(call BuildPackage,chicken-scheme-interpreter))
+