# Libcurl printf problem **URL:** \ **Category:** questions\ **Tags:** nettalk, libcurl\ **Created:** [September 18, 2026, 2:59pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376 "2026-09-18T14:59:43Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![rjolda](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rjolda](https://clarionhub.com/u/rjolda)\ **Post date:** [September 18, 2026, 2:59pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/1 "2026-09-18T14:59:43Z")
Hi, I am in in C11.1 and I am trying to compile a Net Talk APP with libcurl. I have downloaded mikes stuff including printf. I can run the standalone printf tests and they run OK. I have placed the printf.inc and inc file in accessories\libsrc\win. I have placed the INCLUDE(‘printf.inc’),ONCE inside the Global Map However, I get errors stating Unknown function Label for all the printf commands. eg - printf is an Unknown Function Label as are all of these printf commands args = printf(‘code=%s&grant\_type=authorization\_code&client\_id=%s&client\_secret=%s’, pAuthCode, pAppKey, pAppSecret) Seems like the NT app is not seeing printf as a global so the modules cannot see it. What am I missing to make the printf procedure available to all modules in this NT app? Thanks, Ron ---
**Author:** ![rjolda](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rjolda](https://clarionhub.com/u/rjolda)\ **Post date:** [September 18, 2026, 3:14pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/2 "2026-09-18T15:14:51Z")
BTW The error is in libcurldropbox.clw which must be part of the libcurl install? Ron ---
**Author:** ![Mark\_Sarson](https://clarionhub.com/user_avatar/clarionhub.com/mark_sarson/32/6132_2.png) [@Mark\_Sarson](https://clarionhub.com/u/Mark_Sarson)\ **Post date:** [September 18, 2026, 5:19pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/3 "2026-09-18T17:19:38Z")
Hi Ron, Mike’s LibCurl has a dependency on his printf code. The repository can be found here: [mikeduglas/printf: Convenient string formatting.](https://github.com/mikeduglas/printf) Mark ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [September 18, 2026, 5:32pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/4 "2026-09-18T17:32:09Z")
In recent update libcurldropbox has been changed and depends on cjson now. ---
**Author:** ![rjolda](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rjolda](https://clarionhub.com/u/rjolda)\ **Post date:** [September 18, 2026, 5:56pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/5 "2026-09-18T17:56:48Z")
Hi, Updted cjson Problem not solved: ![image](https://clarionhub-uploads.s3.dualstack.eu-north-1.amazonaws.com/original/2X/8/87965205df4eed8684e22bcc291f45253a302607.png) printf is still UNKNOWN PROCEDURE LABEL error. The APP is not seeing printf as a Global Procedure. Must be missing a switch somewhere? Ron ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [September 18, 2026, 7:02pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/6 "2026-09-18T19:02:19Z")
What about the dropbox example from the package? ---
**Author:** ![rjolda](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rjolda](https://clarionhub.com/u/rjolda)\ **Post date:** [September 18, 2026, 9:12pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/7 "2026-09-18T21:12:07Z")
> [@rjolda](#): > > I have downloaded mikes stuff including printf. I can run the standalone printf tests and they run OK Hi Mike, yes, “I have downloaded mikes stuff including printf. I can run the standalone printf tests and they run OK” - The example is Test\_printF . And that does work OK. My problem is that that example is a SINGLE CLW in a Prroject. My app is multiple procedures - and the problem is that the PROCEDURE libcurldropbox.clw does not recognize the printf from the GLOBAL MAP include and thus, the compiler flags it as an Unknown Function Label. Ron ---
**Author:** ![rjolda](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rjolda](https://clarionhub.com/u/rjolda)\ **Post date:** [September 18, 2026, 10:17pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/8 "2026-09-18T22:17:36Z")
HI RESOLVED! The directions for printf stated that INCLUDE(‘printf.inc’),ONCE should be put inside the Global Map. However, the libcurldropbox.clw procedure printf was not recognized. SOLUTION - edit the libcurldropbox.clw and place the INCLUDE(‘printf.inc’) THERE. Now it compiles correctly within the APP. Ron ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [September 19, 2026, 12:56pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/9 "2026-09-19T12:56:04Z")
Looks like your libcurldropbox.clw is outdated or corrupted, “INCLUDE(‘printf.inc’), ONCE” line exists in the current version on github: ![image](https://clarionhub-uploads.s3.dualstack.eu-north-1.amazonaws.com/original/2X/1/1c408704ad1104da3111d324a4667d6a4573213e.png) ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [September 19, 2026, 1:00pm UTC](https://clarionhub.com/t/libcurl-printf-problem/9376/10 "2026-09-19T13:00:17Z")
OT. By the way just noticed incorrect email address [mikeduglas@yandex.com](mailto:mikeduglas@yandex.com) in all the headers, will fix it in libcurl (and cjson) files.