This is kind of unusual. I'm seeing it under Debian 7 on a ci20 mipsel dev-board when building/installing Git 2.12.2:
...
317 translated messages.
GEN gitk-wish
307 translated messages.
SUBDIR perl
chmod: changing permissions of `blib/lib': Operation not permitted
chmod: changing permissions of `blib/arch': Operation not
permittedmake[2]: *** [blib/lib/.exists] Error 1
make[2]: *** Waiting for unfinished jobs....make[2]: *** [blib/arch/.exists] Error 1
chmod: changing permissions of `blib/arch/auto/Git': Operation not permitted
make[2]: *** [blib/arch/auto/Git/.exists] Error 1
chmod: changing permissions of `blib/lib/auto/Git': Operation not permitted
make[2]: *** [blib/lib/auto/Git/.exists] Error 1
make[1]: *** [all] Error 2
make: *** [all] Error 2
SUBDIR git-gui
SUBDIR gitk-git
...When I check permissions:
$ ls -Al git-2.12.2/perl/blib/bin/ total 0 -rw-r--r-- 1 root root 0 Apr 3 05:06 .exists
It appears one of the Git processes is creating the directory structure git-2.12.2/perl/... It also appears to be doing it under sudo/root since I build under my account.
Jeff