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glibc 2.24 deprecated readdir_r, breaking the perf build: $ nix-build -A linuxPackages.perf ... CC util/event.o CC util/evlist.o util/event.c: In function '__event__synthesize_thread': util/event.c:448:2: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations] while (!readdir_r(tasks, &dirent, &next) && next) { ^ In file included from /nix/store/8ic0jwg3p5vcwx52k4781n987hmv0bks-glibc-2.24-dev/include/features.h:368:0, from /nix/store/8ic0jwg3p5vcwx52k4781n987hmv0bks-glibc-2.24-dev/include/stdint.h:25, from /nix/store/jsazxc1b86g2ww569ziwhhvkz8z43vjd-gcc-5.4.0/lib/gcc/x86_64-unknown-linux-gnu/5.4.0/include/stdint.h:9, from /tmp/nix-build-perf-linux-4.4.19.drv-0/linux-4.4.19/tools/include/linux/types.h:6, from util/event.c:1: /nix/store/8ic0jwg3p5vcwx52k4781n987hmv0bks-glibc-2.24-dev/include/dirent.h:189:12: note: declared here extern int __REDIRECT (readdir_r, ^ util/event.c: In function 'perf_event__synthesize_threads': util/event.c:586:2: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations] while (!readdir_r(proc, &dirent, &next) && next) { Fix by adding -Wno-error=deprecated-declarations compile flag. |
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