diff --git a/Mk/Uses/pkgconfig.mk b/Mk/Uses/pkgconfig.mk
index 499be51f1336..671a4f0608c1 100644
--- a/Mk/Uses/pkgconfig.mk
+++ b/Mk/Uses/pkgconfig.mk
@@ -1,31 +1,47 @@
 # handle dependency on the pkgconf port
 #
 # Feature:	pkgconfig
 # Usage:	USES=pkgconfig or USES=pkgconfig:ARGS
 # Valid ARGS:	build (default, implicit), run, both
 #
 # MAINTAINER: ports@FreeBSD.org
 
 .if !defined(_INCLUDE_USES_PKGCONFIG_MK)
 _INCLUDE_USES_PKGCONFIG_MK=	yes
 
 _PKGCONFIG_DEPENDS=	pkgconf>=1.3.0_1:devel/pkgconf
 
 .  if empty(pkgconfig_ARGS)
 pkgconfig_ARGS=	build
 .  endif
 
 .  if ${pkgconfig_ARGS} == "build"
 BUILD_DEPENDS+=	${_PKGCONFIG_DEPENDS}
 CONFIGURE_ENV+=	PKG_CONFIG=pkgconf
 .  elif ${pkgconfig_ARGS} == "run"
 RUN_DEPENDS+=	${_PKGCONFIG_DEPENDS}
 .  elif ${pkgconfig_ARGS} == "both"
 CONFIGURE_ENV+=	PKG_CONFIG=pkgconf
 BUILD_DEPENDS+=	${_PKGCONFIG_DEPENDS}
 RUN_DEPENDS+=	${_PKGCONFIG_DEPENDS}
 .  else
 IGNORE=	USES=pkgconfig - invalid args: [${pkgconfig_ARGS}] specified
 .  endif
 
+_USES_POST+= pkgconfig
+.endif
+
+.if defined(_POSTMKINCLUDED) && !defined(_INCLUDE_USES_PKGCONFIG_POST_MK)
+_INCLUDE_USES_PKGCONFIG_POST_MK=yes
+
+# Provide a cooperative mechanism for managing PKG_CONFIG_PATH.
+.  if defined(PKGCONFIG_PATHS)
+.    if !${CONFIGURE_ENV:MPKG_CONFIG_PATH=*} && !${MAKE_ENV:MPKG_CONFIG_PATH=*}
+CONFIGURE_ENV+=	PKG_CONFIG_PATH=${PKGCONFIG_PATHS:ts:}
+MAKE_ENV+=	PKG_CONFIG_PATH=${PKGCONFIG_PATHS:ts:}
+.    else
+DEV_WARNING+=	"PKGCONFIG_PATHS was ignored due to conflict with CONFIGURE_ENV or MAKE_ENV"
+.    endif
+.  endif
+
 .endif