boost-1.70: Fix cmake reported static file location

dev-libs/boost/boost170-1.70.0.recipe

@@ -6,7 +6,7 @@ expressions, and unit testing. It contains over eighty individual libraries."
 HOMEPAGE="https://www.boost.org/"
 SOURCE_URI="https://dl.bintray.com/boostorg/release/$portVersion/source/boost_${portVersion//./_}.tar.bz2"
 CHECKSUM_SHA256="430ae8354789de4fd19ee52f3b1f739e1fba576f0aded0897c3c2bc00fb38778"
-REVISION="2"
+REVISION="3"
 LICENSE="Boost v1.0"
 COPYRIGHT="1998-2018 Beman Dawes, David Abrahams, Rene Rivera, et al."
 SOURCE_DIR="boost_${portVersion//./_}"
@@ -122,6 +122,7 @@ BUILD_REQUIRES="
 BUILD_PREREQUIRES="
 	cmd:gcc$secondaryArchSuffix
 	cmd:ld$secondaryArchSuffix
+	cmd:find
 	cmd:sed
 	cmd:which
 	"
@@ -198,6 +199,13 @@ INSTALL()
 	prepareInstalledDevelLibs `echo "$devel_libs" | sed -n \
 		-e "s/devel:\(.*\)$secondaryArchSuffix =.*/\1/p"`
 
+	# Correct boost cmake static files
+	# https://github.com/boostorg/boost_install/issues/49
+	for i in $(find $libDir/cmake -name "libboost_*-variant-static.cmake"); do
+		echo "Replacing LIBDIR in $i";
+		sed -i "s%\${_BOOST_LIBDIR}%$prefix/$relativeDevelopLibDir%g" $i;
+	done;
+
 	packageEntries devel $developDir
 }