Added an OpenWRT Makefile

Thanks to datahead.

Makefile

@@ -0,0 +1,33 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=pixiewps
+PKG_RELEASE:=1.1
+
+PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/pixiewps
+	SECTION:=net
+	CATEGORY:=Network
+	SUBMENU:=wireless
+	TITLE:=An offline WPS Bruteforce utility
+	DEPENDS:=+libopenssl
+	URL:=https://github.com/wiire/pixiewps
+endef
+
+define Package/pixiewps/description
+	An offline WPS Bruteforce utility
+endef
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Package/pixiewps/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/pixiewps $(1)/usr/bin/
+endef
+
+$(eval $(call BuildPackage,pixiewps))

src/Makefile

@@ -1,15 +1,15 @@
 CCFLAGS = -std=c99 -O3
-LDFLAGS = -lssl -lcrypto
+LDFLAGS = -lcrypto
 
 TARGET = pixiewps
-PREFIX = $(DESTDIR)/usr/local
+PREFIX = $(DESTDIR)/usr
 BINDIR = $(PREFIX)/bin
 
 all:
 	$(CC) $(CCFLAGS) -o $(TARGET) $(TARGET).c random_r.c $(LDFLAGS)
 
 install:
-	install -D pixiewps $(BINDIR)/$(TARGET)
+	install -D $(TARGET) $(BINDIR)/$(TARGET)
 	install -m 755 $(TARGET) $(BINDIR)
 
 uninstall: