Allow DPCTL to build when intel-cmplr-lib-rt is absent from $PREFIX

The change allows icpx to find these libraries in $BUILD_PREFIX

Author: oleksandr-pavlyk

conda-recipe/build.sh

@@ -6,6 +6,9 @@
 export LDFLAGS="$LDFLAGS -Wl,-rpath,$PREFIX/lib"
 export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$PREFIX/compiler/lib/intel64_lin:$PREFIX/compiler/lib:$PREFIX/lib"
 
+# This is necessary to help DPC++ find Intel libraries such as SVML, IRNG, etc in build prefix
+export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${BUILD_PREFIX}/lib"
+
 # Intel LLVM must cooperate with compiler and sysroot from conda
 echo "--gcc-toolchain=${BUILD_PREFIX} --sysroot=${BUILD_PREFIX}/${HOST}/sysroot -target ${HOST}" > icpx_for_conda.cfg
 export ICPXCFG="$(pwd)/icpx_for_conda.cfg"