Thanks, Joel! I haven't had much time to look at this since my previous post, but I did discover that, for the first failing test (CCACHE_NOHASHDIR in base suite), forcing CCACHE_BASEDIR to a common parent dir for just that test cleared the error. Still not sure if this is actually a problem with the test or due to some other peculiarity in my environment. CCACHE_BASEDIR is already turned on for the other failing test, though; I will try looking at that one with CCACHE_DEBUG_HASH when I have some time.
-----Original Message----- From: joel.rosd...@gmail.com [mailto:joel.rosd...@gmail.com] On Behalf Of Joel Rosdahl Sent: Monday, March 19, 2018 3:57 PM To: Forte, Greg <greg.fo...@msx.bala.susq.com> Cc: firstname.lastname@example.org Subject: Re: [ccache] ccache test failures On 16 March 2018 at 12:52, Forte, Greg via ccache <email@example.com> wrote: > Tried this with and without CCACHE_DIR set and exported - with it, I > see the same output you showed, including the unset, and the test > still fails: [...] OK. What's common between the two tests that fail for you is that you don't get a cache hit for a second compilation in another directory. One way to understand why is to log all data that is hashed by ccache in the two cases and see where it starts to differ. There is a crude way of doing that already: Build ccache with -DCCACHE_DEBUG_HASH and set CCACHE_DEBUG_HASH at runtime. Each ccache invocation will then create a ccache-debug-hash.bin that contains the hashed data, so you could compare the files in the two different directories. Or send them to me (private mail) and I'll have a look. By the way, here's a sketch of a yet unimplemented feature what would make this kind of debugging easier: https://github.com/ccache/ccache/issues/226 -- Joel ________________________________ IMPORTANT: The information contained in this email and/or its attachments is confidential. If you are not the intended recipient, please notify the sender immediately by reply and immediately delete this message and all its attachments. Any review, use, reproduction, disclosure or dissemination of this message or any attachment by an unintended recipient is strictly prohibited. Neither this message nor any attachment is intended as or should be construed as an offer, solicitation or recommendation to buy or sell any security or other financial instrument. Neither the sender, his or her employer nor any of their respective affiliates makes any warranties as to the completeness or accuracy of any of the information contained herein or that this message or any of its attachments is free of viruses. _______________________________________________ ccache mailing list firstname.lastname@example.org https://lists.samba.org/mailman/listinfo/ccache