clang: error: argument unused during compilation: '-I core'

[ryandesign]

Trying to compile latest potion with clang and ccache produces this message:

CC core/potion.opic
clang: error: argument unused during compilation: '-I core'

It's because ccache is not yet fully clang-compatible, and it produces this warning, and you've requested by specifying -Werror in config.mak that all warnings be turned into errors.

In MacPorts we run into this kind of problem a lot, and recommend that you don't ship build systems that use -Werror, because you never know what kinds of new warnings will appear in compilers in the future.

[rurban]

If ccache doesn't accept -I core does it compile at all?
It does but throws a lot of new warnings: -Warray-bounds -Wtautological-compare -Wparentheses-equality besides the 2 unused arguments ccache warnings. I'll have to check why.

I'll remove -Werror for the upcoming 0.1 release version but for the development cycle I'm fine with it.

[ryandesign]

Yes, it compiles; ccache just throws an incorrect warning. It will be fixed in ccache 3.2 which is not out yet. https://bugzilla.samba.org/show_bug.cgi?id=8118

[rurban]

Fixes added with
commit fe8e5b5
Author: Reini Urban rurban@cpanel.net
Date: Mon Sep 30 14:09:50 2013 -0500

ccache clang: add -Qunused-arguments
According to https://bugzilla.samba.org/show_bug.cgi?id=8118

commit 5cb9251
Author: Reini Urban rurban@cpanel.net
Date: Mon Sep 30 12:05:13 2013 -0500

[potion #41] fix for ccache clang
ccache clang is not -Werror safe

to p2, will be backported to potion soon.

[rurban]

Fixed in potion/master with commit 032ea07
Will be in the upcoming 0.1 release