This removes lines that set PKG_BUILD_DIR when the set value is no
different from the default value.

Specifically, the line is removed if the assigned value is:

* $(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)

  The default PKG_BUILD_DIR was updated[1] to incorporate BUILD_VARIANT
  if it is set, so now this is identical to the default value.

* $(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_SOURCE_SUBDIR)

  if PKG_SOURCE_SUBDIR is set to $(PKG_NAME)-$(PKG_VERSION), making it
  the same as the previous case

* $(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)

  This is the same as the default PKG_BUILD_DIR when there is no
  BUILD_VARIANT.

* $(BUILD_DIR)/[name]-$(PKG_VERSION)

  where [name] is a string that is identical to PKG_NAME

[1]: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=e545fac8d968864a965edb9e50c6f90940b0a6c9

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

Patch 903-no-examples.patch removes MinOZW binary. This is wrong since
install section of openzwave is still using it. We can either remove the
patch or remove install section for openzwave. It seems people are using
this binary so we remove the patch.

After removing the patch the following issue appears with gcc7:
cc1plus: error: -Wformat-security ignored without -Wformat

This is resolved by adding the following to Makefile
TARGET_CPPFLAGS+=-Wno-format -Wno-format-security

Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>

cpp/examples/MinOZW/Makefile contains this rule:

LIBS =  $(wildcard $(LIBDIR)/*.so $(LIBDIR)/*.dylib $(top_builddir)/*.so
$(top_builddir)/*.dylib $(top_builddir)/cpp/build/*.so
$(top_builddir)/cpp/build/*.dylib )
LIBSDIR = $(abspath $(dir $(firstword $(LIBS))))

with LIBDIR not being defined anywhere we end up picking up host
libraries.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Standard assignment is immediate expansion without any extraneous spacing, RFC822 compliant email addresses and consistent section assignments

Signed-off-by: Stephen Walker <stephendwalker+github@gmail.com>

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>