Add debug stuff, try to create symlink

Author: NicolasHug

packaging/pre_build_script.sh

@@ -7,3 +7,114 @@ set -ex
 # and PyTorch actually has it included. PyTorch, however, does not have the
 # CMake helpers.
 conda install -y pybind11 -c conda-forge
+
+# Need to create a symlink for libnvcuvid.so.1 to libnvcuvid.so becuase that's
+# what Cmake is looking for and it doesn't exist by default. This is pretty
+# brittle.
+sudo ln -s libnvcuvid.so.1 /usr/lib64/libnvcuvid.so
+
+
+# Search for nvcuvid library in various locations for debugging CI build issues
+echo "[NVCUVID-SEARCH] === Searching for nvcuvid library ==="
+
+# First, let's find where CUDA nppi libraries are located
+echo "[NVCUVID-SEARCH] Looking for CUDA nppi libraries to find potential nvcuvid location..."
+NPPI_LOCATIONS=()
+
+# Search for CUDA nppi libraries that CMake should find
+for nppi_lib in "libnppi.so*" "libnppicc.so*" "nppi.so*" "nppicc.so*" "libnppi*" "libnppicc*"; do
+    found_nppi=$(find /usr -name "$nppi_lib" 2>/dev/null | head -5)
+    if [ -n "$found_nppi" ]; then
+        echo "[NVCUVID-SEARCH] Found CUDA nppi library: $found_nppi"
+        while IFS= read -r lib_path; do
+            lib_dir=$(dirname "$lib_path")
+            if [[ ! " ${NPPI_LOCATIONS[@]} " =~ " $lib_dir " ]]; then
+                NPPI_LOCATIONS+=("$lib_dir")
+            fi
+        done <<< "$found_nppi"
+    fi
+done
+
+# Add these locations to our search paths
+for nppi_dir in "${NPPI_LOCATIONS[@]}"; do
+    echo "[NVCUVID-SEARCH] Adding CUDA library directory to search: $nppi_dir"
+done
+
+# Standard library search paths
+SEARCH_PATHS=(
+    "/usr/lib"
+    "/usr/lib64" 
+    "/usr/lib/x86_64-linux-gnu"
+    "/usr/local/lib"
+    "/usr/local/lib64"
+    "/lib"
+    "/lib64"
+    "/opt/cuda/lib64"
+    "/usr/local/cuda/lib64"
+    "/usr/local/cuda/lib"
+    "/usr/local/cuda-*/lib64"
+    "/usr/local/cuda-*/lib"
+)
+
+# Add the CUDA nppi library directories to our search paths
+for nppi_dir in "${NPPI_LOCATIONS[@]}"; do
+    SEARCH_PATHS+=("$nppi_dir")
+done
+
+# Library name variations to search for
+LIB_PATTERNS=(
+    "libnvcuvid.so*"
+    "nvcuvid.so*" 
+    "libnvcuvid.a"
+    "nvcuvid.a"
+    "libnvcuvid*"
+    "nvcuvid*"
+)
+
+found_libraries=()
+
+for search_path in "${SEARCH_PATHS[@]}"; do
+    if [ -d "$search_path" ]; then
+        echo "[NVCUVID-SEARCH] Searching in: $search_path"
+        for pattern in "${LIB_PATTERNS[@]}"; do
+            # Use find with error suppression to avoid permission errors
+            found_files=$(find "$search_path" -maxdepth 3 -name "$pattern" 2>/dev/null || true)
+            if [ -n "$found_files" ]; then
+                echo "[NVCUVID-SEARCH]   Found: $found_files"
+                found_libraries+=($found_files)
+            fi
+        done
+    else
+        echo "[NVCUVID-SEARCH] Directory not found: $search_path"
+    fi
+done
+
+# Also try using ldconfig to find the library
+echo "[NVCUVID-SEARCH] Checking ldconfig cache for nvcuvid..."
+if command -v ldconfig >/dev/null 2>&1; then
+    ldconfig_result=$(ldconfig -p 2>/dev/null | grep -i nvcuvid || echo "Not found in ldconfig cache")
+    echo "[NVCUVID-SEARCH] ldconfig result: $ldconfig_result"
+fi
+
+# Try pkg-config if available
+echo "[NVCUVID-SEARCH] Checking pkg-config for cuda libraries..."
+if command -v pkg-config >/dev/null 2>&1; then
+    pkg_result=$(pkg-config --list-all 2>/dev/null | grep -i cuda || echo "No CUDA packages found in pkg-config")
+    echo "[NVCUVID-SEARCH] pkg-config cuda packages: $pkg_result"
+fi
+
+# Summary
+if [ ${#found_libraries[@]} -gt 0 ]; then
+    echo "[NVCUVID-SEARCH] === SUMMARY: Found ${#found_libraries[@]} nvcuvid library files ==="
+    for lib in "${found_libraries[@]}"; do
+        echo "[NVCUVID-SEARCH]   $lib"
+        # Show file info if possible
+        if [ -f "$lib" ]; then
+            ls -la "$lib" 2>/dev/null || true
+        fi
+    done
+else
+    echo "[NVCUVID-SEARCH] === SUMMARY: No nvcuvid libraries found ==="
+fi
+
+echo "[NVCUVID-SEARCH] === End nvcuvid library search ==="