Here's a somewhat, but not fully satisfactory solution, which requires a user to install the module like this:
npm install node-dht-sensor --use_libgpiod=true
...if they need (or want... this does work on a RPi 4 too) to use libgpiod, allowing the standard installation without the extra parameter to impose no new library dependencies.
What I'd really like to do, however, if it's at all possible, is to replace "use_libgpiod=='true'" with something automatic, the moral equivalent of "available(libgpiod)" or "exists('/usr/include/gpiod.h')", in case any such node-gyp capability exists which simply can't be easily found in the documentation.
npm install node-dht-sensor --use_libgpiod=true
...if they need (or want... this does work on a RPi 4 too) to use libgpiod, allowing the standard installation without the extra parameter to impose no new library dependencies.
Code:
{ "targets": [ { "variables": { "dht_verbose%": "false", "use_libgpiod%" : "false" }, "target_name": "node_dht_sensor", "sources": [ "src/bcm2835/bcm2835.c", "src/node-dht-sensor.cpp", "src/dht-sensor.cpp", "src/util.cpp", "src/abstract-gpio.cpp", ], "include_dirs": [ "<!@(node -p \"require('node-addon-api').include\")" ], "dependencies": [ "<!(node -p \"require('node-addon-api').gyp\")" ], "defines": [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ], "conditions": [ ["dht_verbose=='true'", { "defines": [ "VERBOSE" ] }], ["use_libgpiod=='true'", { "defines": [ "USE_LIBGPIOD" ], 'libraries': [ '-lgpiod' ] }] ] } ]}Statistics: Posted by kshetline — Fri Feb 14, 2025 3:12 am
