gperf: add from packages feed

Add gperf which is required for building gettext
after using the autogen.sh script.

Signed-off-by: Michael Pratt <mcpratt@pm.me>

package/devel/gperf/Makefile

@@ -0,0 +1,36 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=gperf
+PKG_VERSION:=3.1
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=@GNU/gperf
+PKG_HASH:=588546b945bba4b70b6a3a616e80b4ab466e3f33024a352fc2198112cdbb3ae2
+
+PKG_LICENSE:=GPL-3.0
+PKG_LICENSE_FILES:=COPYING
+
+include $(INCLUDE_DIR)/host-build.mk
+include $(INCLUDE_DIR)/package.mk
+
+HOST_CPPFLAGS:=-I$(HOST_BUILD_DIR)/lib -I$(HOST_BUILD_DIR)/src $(HOST_CPPFLAGS)
+TARGET_CPPFLAGS:=-I$(PKG_BUILD_DIR)/lib -I$(PKG_BUILD_DIR)/src $(TARGET_CPPFLAGS)
+
+define Package/gperf
+  SECTION:=devel
+  CATEGORY:=Development
+  TITLE:=GNU gperf
+  URL:=http://www.gnu.org/software/gperf
+endef
+
+define Package/gperf/description
+ GNU gperf is a perfect hash function generator. For a given list of strings,
+ it produces a hash function and hash table, in form of C or C++ code,
+ for looking up a value depending on the input string.
+ The hash function is perfect, which means that the hash table has no collisions,
+ and the hash table lookup needs a single string comparison only.
+endef
+
+$(eval $(call HostBuild))
+$(eval $(call BuildPackage,gperf))