unrar: split unrar and libunrar into build variants, add missing InstallDev

Building unrar together with libunrar creates conflicts that can be fixed by
doing separate builds.
Closes https://github.com/openwrt/packages/pull/2060.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

utils/unrar/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=unrar
 PKG_VERSION:=5.3.7
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=unrarsrc-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.rarlab.com/rar
@@ -19,7 +19,7 @@ PKG_MAINTAINER:=Álvaro Fernández Rojas <noltari@gmail.com>
 PKG_LICENSE:=UnRAR
 PKG_LICENSE_FILES:=license.txt
 
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)/unrar
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)-$(BUILD_VARIANT)/unrar
 PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/uclibc++.mk
@@ -37,6 +37,7 @@ $(call Package/unrar/Default)
   SECTION:=utils
   CATEGORY:=Utilities
   TITLE+= (application)
+  VARIANT:=bin
 endef
 
 define Package/libunrar
@@ -44,6 +45,7 @@ $(call Package/unrar/Default)
   SECTION:=libs
   CATEGORY:=Libraries
   TITLE+= (library)
+  VARIANT:=lib
 endef
 
 define Package/unrar/description
@@ -56,11 +58,31 @@ define Package/libunrar/description
   archives
 endef
 
+ifeq ($(BUILD_VARIANT),lib)
 define Build/Compile
-	$(call Build/Compile/Default,unrar)
 	$(call Build/Compile/Default,lib)
 endef
 
+define Build/Install
+	$(call Build/Install/Default,install-lib)
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/include/unrar
+	$(CP) $(PKG_BUILD_DIR)/*.hpp $(1)/usr/include/unrar/
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/lib/libunrar.so $(1)/usr/lib/
+endef
+else
+define Build/Compile
+	$(call Build/Compile/Default,unrar)
+endef
+
+define Build/Install
+	$(call Build/Install/Default,install-unrar)
+endef
+endif
+
 define Package/unrar/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/unrar $(1)/usr/bin/
@@ -68,7 +90,7 @@ endef
 
 define Package/libunrar/install
 	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_BUILD_DIR)/libunrar.so $(1)/usr/lib/
+	$(CP) $(PKG_INSTALL_DIR)/lib/libunrar.so $(1)/usr/lib/
 endef
 
 $(eval $(call BuildPackage,unrar))

utils/unrar/patches/100-makefile_fixes.patch

@@ -16,3 +16,12 @@
  DESTDIR=/usr
  
  # Linux using LCC
+@@ -142,7 +142,7 @@ uninstall-unrar:
+ 			rm -f $(DESTDIR)/bin/unrar
+ 
+ install-lib:
+-		install libunrar.so $(DESTDIR)/lib
++		install -D libunrar.so $(DESTDIR)/lib/libunrar.so
+ 
+ uninstall-lib:
+ 		rm -f $(DESTDIR)/lib/libunrar.so