It seems some package (sstp-client) makes use of pppd.pc file to detect
the ppp version as 2.5.0 changed some API.
Also install the .pc file to permit the version detection of pppd.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
define Build/InstallDev
$(INSTALL_DIR) $(1)/usr/include
$(CP) $(PKG_INSTALL_DIR)/usr/include/pppd $(1)/usr/include/
+ $(INSTALL_DIR) $(1)/usr/lib/pkgconfig
+ $(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/*.pc $(1)/usr/lib/pkgconfig
endef
define Package/ppp/script_install