Running phase: unpackPhase
unpacking source archive /nix/store/3abcxsqyjxmba1f15zvg127vxlrzh982-3dpong-0.5.tar.gz
source root is 3dpong-0.5
setting SOURCE_DATE_EPOCH to timestamp 1083221611 of file "3dpong-0.5/docs/CHANGES.txt"
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
no configure script, doing nothing
Running phase: buildPhase
build flags: SHELL=/nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash
gcc     -I/usr/X11R6/include src/3dpong.c -c -o obj/3dpong.o
src/3dpong.c: In function 'eventloop':
src/3dpong.c:1064:9: error: implicit declaration of function 'usleep' [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wimplicit-function-declaration-Wimplicit-function-declaration8;;]
 1064 |         usleep(time_padding);
      |         ^~~~~~
src/3dpong.c: In function 'playsound':
src/3dpong.c:1660:8: warning: ignoring return value of 'system' declared with attribute 'warn_unused_result' [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wno-unused-result-Wunused-result8;;]
 1660 |        system(cmd);
      |        ^~~~~~~~~~~
make: *** [Makefile:79: obj/3dpong.o] Error 1