Add ktx

ktx/external/basisu/contrib/single_file_transcoder/create_transcoder.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# Temporary compiled binary
+OUT_FILE="tempbin"
+
+echo "Amalgamating files... this can take a while"
+# Use the faster Python script if we have 3.8 or higher
+if python3 -c 'import sys; assert sys.version_info >= (3,8)' 2>/dev/null; then
+  ./combine.py -r ../../transcoder -o basisu_transcoder.cpp basisu_transcoder-in.cpp
+else
+  ./combine.sh -r ../../transcoder -o basisu_transcoder.cpp basisu_transcoder-in.cpp
+fi
+# Did combining work?
+if [ $? -ne 0 ]; then
+  echo "Combine script: FAILED"
+  exit 1
+fi
+echo "Combine script: PASSED"
+
+# Compile the generated output
+which cc > /dev/null
+if [ $? -ne 0 ]; then
+  echo "(Skipping compile test)"
+else
+  cc -lm -std=c++11 -lstdc++ -Wall -Wextra -Werror -Os -g0 -fno-exceptions -fno-rtti -o $OUT_FILE examples/simple.cpp
+  # Did compilation work?
+  if [ $? -ne 0 ]; then
+    echo "Compiling simple.cpp: FAILED"
+    exit 1
+  fi
+  # Run then delete the compiled output
+  ./$OUT_FILE
+  retVal=$?
+  rm -f $OUT_FILE
+  # Did the test work?
+  if [ $retVal -ne 0 ]; then
+    echo "Running simple.cpp: FAILED"
+    exit 1
+  fi
+  echo "Running simple.cpp: PASSED"
+fi