2 files changed, 62 insertions, 2 deletions
diff --git a/build-android/android-generate.bat b/build-android/android-generate.bat
index 128543a4..39cf1323 100644
--- a/build-android/android-generate.bat
+++ b/build-android/android-generate.bat
@@ -34,6 +34,33 @@ py -3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_layer_d
 py -3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_extension_helper.h
 py -3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml object_tracker.cpp
 py -3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_typemap_helper.h
-py -3 ../../../scripts/external_revision_generator.py --git_dir ../../third_party/shaderc/third_party/spirv-tools -s SPIRV_TOOLS_COMMIT_ID -o spirv_tools_commit_id.h
+
+set SPIRV_TOOLS_PATH=../../third_party/shaderc/third_party/spirv-tools
+set SPIRV_TOOLS_UUID=spirv_tools_uuid.txt
+
+if exist %SPIRV_TOOLS_PATH% (
+
+  echo Found spirv-tools, using git_dir for external_revision_generator.py
+  py -3 ../../../scripts/external_revision_generator.py ^
+    --git_dir %SPIRV_TOOLS_PATH% ^
+    -s SPIRV_TOOLS_COMMIT_ID ^
+    -o spirv_tools_commit_id.h
+
+) else (
+
+  echo No spirv-tools git_dir found, generating UUID for external_revision_generator.py
+
+  REM Ensure uuidgen is installed, this should error if not found
+  uuidgen.exe -v
+
+  uuidgen.exe > %SPIRV_TOOLS_UUID%
+  type %SPIRV_TOOLS_UUID%
+  py -3 ../../../scripts/external_revision_generator.py ^
+    --rev_file %SPIRV_TOOLS_UUID% ^
+    -s SPIRV_TOOLS_COMMIT_ID ^
+    -o spirv_tools_commit_id.h
+
+)
+
 cd ../..
 
diff --git a/build-android/android-generate.sh b/build-android/android-generate.sh
index 6f97a6ca..0c0f5e10 100755
--- a/build-android/android-generate.sh
+++ b/build-android/android-generate.sh
@@ -37,6 +37,39 @@ mkdir -p generated/include generated/common
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_extension_helper.h )
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml object_tracker.cpp )
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_typemap_helper.h )
-( cd generated/include; python3 ../../../scripts/external_revision_generator.py --git_dir ../../third_party/shaderc/third_party/spirv-tools -s SPIRV_TOOLS_COMMIT_ID -o spirv_tools_commit_id.h )
+
+SPIRV_TOOLS_PATH=../../third_party/shaderc/third_party/spirv-tools
+SPIRV_TOOLS_UUID=spirv_tools_uuid.txt
+
+set -e
+
+( cd generated/include;
+
+  if [[ -d $SPIRV_TOOLS_PATH ]]; then
+
+    echo Found spirv-tools, using git_dir for external_revision_generator.py
+
+    python3 ../../../scripts/external_revision_generator.py \
+      --git_dir $SPIRV_TOOLS_PATH \
+      -s SPIRV_TOOLS_COMMIT_ID \
+      -o spirv_tools_commit_id.h
+
+  else
+
+    echo No spirv-tools git_dir found, generating UUID for external_revision_generator.py
+
+    # Ensure uuidgen is installed, this should error if not found
+    uuidgen --v
+
+    uuidgen > $SPIRV_TOOLS_UUID;
+    cat $SPIRV_TOOLS_UUID;
+    python3 ../../../scripts/external_revision_generator.py \
+      --rev_file $SPIRV_TOOLS_UUID \
+      -s SPIRV_TOOLS_COMMIT_ID \
+      -o spirv_tools_commit_id.h
+
+  fi
+)
+
 
 exit 0