Re: [fltk.general] Read Signal from ADC on Raspberry Pi with FLTK

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Re: Read Signal from ADC on Raspberry Pi with FLTK Albrecht Schlosser 08:17 Oct 21 top right image
 
On 10/21/20 4:48 PM LosCelos wrote:
mistake from my side:
i dont need the makefile. I can compile the shown adc program in terminal with: gcc testADC.c -o testADC -lwiringPi

i compile the fltk App with: fltk-config --compile app.cxx

the problem is that i cant put the needed  -lwiringPi in the compile line from the fltk

The "easiest" way to do this is to use `fltk-config --compile app.cxx`, copy the command line you see and run the entire command on a new command (copy and paste). Then "go back" one line in your shell (typically by using the uparrow key) and edit the command line, i.e. put '-lwiringPi' before or after '-lfltk' or at another appropriate place.

OTOH, I'd likely save the command file in a shell script and edit this script for my build so I can easily repeat it. If you like you can also use a combination of a simple Makefile that uses `fltk-config --cxxflags' and `fltk-config --ld[static]flags' to get the proper FLTK flags.

Given your command above, you could probably build your app using:

$ gcc `fltk-config --cxxflags` app.cxx -o app -lwiringPi `fltk-config --ldstaticflags`

Copy and paste this line including the backticks (`) but w/o the '$' sign and this should probably work.

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