Package jack was not found in the pkg-config search path. Perhaps you should add the directory containing `jack.pc' to the PKG_CONFIG_PATH environment variable No package 'jack' found Package jack was not found in the pkg-config search path. Perhaps you should add the directory containing `jack.pc' to the PKG_CONFIG_PATH environment variable No package 'jack' found config.status: WARNING: makefile.in seems to ignore the --datarootdir setting