Seems like I post about this about once a year, when it's time to upgrade Fedora.
I first got this error trying to compile a patched version of dahdi-linux-2.11.1; I noticed that there is now a dahdi-linux-complete-3.0.0+3.0.0, so I tried that one with the same result. If I compile it while running kernel-4.16.8-300.fc28.x86_64, it compiles fine, but when I try to compile it while running kernel-5.0.16-100.fc28.x86_64, I get this error: CC [M] /local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi/oct612x/oct612x-user.o /local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi/oct612x/oct612x-user.c: In function ‘Oct6100UserGetTime’: /local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi/oct612x/oct612x-user.c:38:2: error: implicit declaration of function ‘do_gettimeofday’; did you mean ‘do_settimeofday64’? [-Werror=implicit-function-declaration] do_gettimeofday(&tv); ^~~~~~~~~~~~~~~ do_settimeofday64 cc1: some warnings being treated as errors make[4]: *** [scripts/Makefile.build:277: /local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi/oct612x/oct612x-user.o] Error 1 make[3]: *** [scripts/Makefile.build:492: /local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi/oct612x] Error 2 make[2]: *** [Makefile:1581: _module_/local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux/drivers/dahdi] Error 2 make[2]: Leaving directory '/usr/src/kernels/5.0.16-100.fc28.x86_64' make[1]: *** [Makefile:74: modules] Error 2 make[1]: Leaving directory '/local/src/dahdi/dahdi-linux-complete-3.0.0+3.0.0/linux' make: *** [Makefile:9: all] Error 2 At first I thought this might be due to using a newer version of gcc that was being stricter about turning warnings into errors, but it compiles fine with the older kernel. So I tried some stupid stuff like calling do_gettimeofday64() instead; same error. I also tried the suggestion of using settimeofday64() instead; different error (argument type mismatch, but even if it had compiled, I wouldn't have expected that code to actually work). Also tried explicitly declaring "void do_gettimeofday()" (since the return value isn't being used); different error. I expect this isn't a hard thing to fix, but it has been many years since I've done any C programming and I am quite rusty. Anyone else run into this, and have a fix? Thanks, --Greg
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