Integrates CUDA pip wheels (#1136)

* Refactors rpath to externally set var. Adds mechanism to add metadata

* Sets RUNPATH when using cudnn and cublas wheels

* Escapes dollar sign

* Fix rpath for cpu builds

Co-authored-by: atalman <atalman@fb.com>

Author: syed-ahmed

manywheel/build_common.sh

@@ -359,15 +359,15 @@ for pkg in /$WHEELHOUSE_DIR/torch*linux*.whl /$LIBTORCH_HOUSE_DIR/libtorch*.zip;
 
     # set RPATH of _C.so and similar to $ORIGIN, $ORIGIN/lib
     find $PREFIX -maxdepth 1 -type f -name "*.so*" | while read sofile; do
-        echo "Setting rpath of $sofile to " '$ORIGIN:$ORIGIN/lib'
-        $PATCHELF_BIN --set-rpath '$ORIGIN:$ORIGIN/lib' $sofile
+        echo "Setting rpath of $sofile to ${C_SO_RPATH:-'$ORIGIN:$ORIGIN/lib'}"
+        $PATCHELF_BIN --set-rpath ${C_SO_RPATH:-'$ORIGIN:$ORIGIN/lib'} $sofile
         $PATCHELF_BIN --print-rpath $sofile
     done
 
     # set RPATH of lib/ files to $ORIGIN
     find $PREFIX/lib -maxdepth 1 -type f -name "*.so*" | while read sofile; do
-        echo "Setting rpath of $sofile to " '$ORIGIN'
-        $PATCHELF_BIN --set-rpath '$ORIGIN' $sofile
+        echo "Setting rpath of $sofile to ${LIB_SO_RPATH:-'$ORIGIN'}"
+        $PATCHELF_BIN --set-rpath ${LIB_SO_RPATH:-'$ORIGIN'} $sofile
         $PATCHELF_BIN --print-rpath $sofile
     done
 

manywheel/build_cuda.sh

@@ -274,6 +274,15 @@ elif [[ $CUDA_VERSION == "11.7" ]]; then
             "libcublas.so.11"
             "libcublasLt.so.11"
         )
+    else
+        echo "Using cudnn and cublas from pypi."
+        CUDA_RPATHS=(
+            '$ORIGIN/../../nvidia/cublas/lib'
+            '$ORIGIN/../../nvidia/cudnn/lib'
+        )
+        CUDA_RPATHS=$(IFS=: ; echo "${CUDA_RPATHS[*]}")
+        export C_SO_RPATH=$CUDA_RPATHS':$ORIGIN:$ORIGIN/lib'
+        export LIB_SO_RPATH=$CUDA_RPATHS':$ORIGIN'
     fi
 else
     echo "Unknown cuda version $CUDA_VERSION"