Update docs to use python3 executable where required

- version invoked by naked python is not defined by PEP standard

Components: Vulkan

VK-GL-CTS Issue: 3479

Change-Id: I80e14ec67eeeb4ca8f55e9dacfdd917ab218d992

diff --git a/external/vulkancts/README.md b/external/vulkancts/README.md
index 664de4c..8e8fa7d 100644 (file)
--- a/external/vulkancts/README.md
+++ b/external/vulkancts/README.md
@@ -60,14 +60,14 @@ vulkan-docs, spirv-headers, and spirv-tools.
 
 To download sources, run:
 
-       python external/fetch_sources.py
+       python3 external/fetch_sources.py
 
 You may need to re-run `fetch_sources.py` to update to the latest glslang,
 vulkan-docs and spirv-tools revisions occasionally.
 
 You also need to install lxml python module by running:
 
-       python -m pip install lxml
+       python3 -m pip install lxml
 
 With CMake out-of-source builds are always recommended. Create a build directory
 of your choosing, and in that directory generate Makefiles or IDE project
@@ -109,14 +109,14 @@ If building for 32-bit x86 with GCC, you probably also want to add `-msse2
 
 Following command will build dEQP.apk:
 
-       python scripts/android/build_apk.py --sdk <path to Android SDK> --ndk <path to Android NDK>
+       python3 scripts/android/build_apk.py --sdk <path to Android SDK> --ndk <path to Android NDK>
 
 By default the CTS package will be built for the Android API level 28.
 Another API level may be supplied using --native-api command line option.
 
 The package can be installed by either running:
 
-       python scripts/android/install_apk.py
+       python3 scripts/android/install_apk.py
 
 By default the CTS package will contain libdeqp.so built for armeabi-v7a, arm64-v8a,
 x86, and x86_64 ABIs, but that can be changed at build time by passing the --abis command line
@@ -139,7 +139,7 @@ tests from top-level groups and together they contain all test cases that should
 
 Vulkan CTS mustpass can be re-generated by running:
 
-       python <vulkancts>/external/vulkancts/scripts/build_mustpass.py
+       python3 <vulkancts>/external/vulkancts/scripts/build_mustpass.py
 
 
 Running CTS