Bug: PREFIX environment variable has no effect in make install

[Michal-Szczepaniak]

Describe the bug

objdump: '/usr/lib/x86_64-linux-gnu/libmagic.so': No such file
objdump: '/usr/lib/x86_64-linux-gnu/libmagic.so': No such file
install -d /usr/local/lib
install -m 0644 /home/foidbgen/tmp/STT/tensorflow/bazel-bin/native_client/libstt.so /usr/local/lib/
install -d /usr/local/include
install -m 0644 coqui-stt.h /usr/local/include
install -d /usr/local/bin
install -m 0755 stt /usr/local/bin/

To Reproduce I followed https://stt.readthedocs.io/en/latest/BUILDING.html and on the install step, as you can see before, PREFIX does not take effect.

Expected behavior It should install files to /usr like i told it to, not /usr/local

Environment (please complete the following information):

• OS Platform and Distribution: openSUSE Tumbleweed
• TensorFlow installed from (our builds, or upstream TensorFlow): i followed the instructions so its submodule from master
• TensorFlow version (use command below): emm its from master sir
• Python version: 3.8
• Bazel version (if compiling from source): 3.7
• GCC/Compiler version (if compiling from source): 11.2.1
• CUDA/cuDNN version: none
• GPU model and memory: i'm not using gpu
• Exact command to reproduce: for the third time, it's env PREFIX=/usr sudo make install

Additional context i'm using fish but it shouldn't matter

[reuben]

PRs welcome! I basically never use make install so I'm not the best one to fix this :)