kc3-lang/automake

2023-01-11T21:40:04

dirstamp: use append too instead of truncate We changed the depfiles logic to use >> (append) instead of > (truncate) due to it being slightly faster & nicer to the disk. Do the same with the dirstamp files as we only need the files to exist -- we don't care about their content, and we never put anything in them ourselves. If someone else were to, we clean them up normally with `make clean`. Simple test case on my Linux 6.1 w/ext4 on SSD: @: > foo.txt for (i = 0; i < 1000000; ++i) close(open("foo.txt", O_WRONLY|O_CREAT|O_TRUNC, 0666)); -> 769 msec @: >>foo.txt for (i = 0; i < 1000000; ++i) close(open("foo.txt", O_WRONLY|O_CREAT|O_APPEND, 0666)); -> 2 sec