Install android-libetc1-dev by entering the following commands in the terminal:
sudo apt update sudo apt install android-libetc1-dev
ETC1 compression library - Development files
Ericsson Texture Compression (ETC) is a lossy texture compression technique developed in collaboration with Ericsson Research in early 2005. libETC1 provides the encoding and decoding of ETC1 compression algorithm. . This package provides the development files.