zlib: use $(TARGET_MAKE_ENV) when calling $(MAKE1)

Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/zlib/zlib.mk

@@ -44,7 +44,7 @@ define HOST_ZLIB_CONFIGURE_CMDS
 endef
 
 define ZLIB_BUILD_CMDS
-	$(MAKE1) -C $(@D)
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D)
 endef
 
 define HOST_ZLIB_BUILD_CMDS
@@ -52,11 +52,11 @@ define HOST_ZLIB_BUILD_CMDS
 endef
 
 define ZLIB_INSTALL_STAGING_CMDS
-	$(MAKE1) -C $(@D) DESTDIR=$(STAGING_DIR) LDCONFIG=true install
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D) DESTDIR=$(STAGING_DIR) LDCONFIG=true install
 endef
 
 define ZLIB_INSTALL_TARGET_CMDS
-	$(MAKE1) -C $(@D) DESTDIR=$(TARGET_DIR) LDCONFIG=true install
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D) DESTDIR=$(TARGET_DIR) LDCONFIG=true install
 endef
 
 # We don't care removing the .a from target, since it not used at link