L4_BID_PKG_CONFIG = $(PKG_CONFIG)
BID_PKG_CONFIG = $(if $(strip $(3)), \
$(shell PKG_CONFIG_LIBDIR=$(1)/pc \
- $(L4_BID_PKG_CONFIG) \
+ PKG_CONFIG_PATH= $(L4_BID_PKG_CONFIG) \
--define-variable=incdir=$(1)/include/contrib \
$(2) $(3) || echo __PKGCONFIG_FAILED__))