Date: Fri, 06 Jul 2012 15:34:25 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: toolchain@FreeBSD.org Subject: Fwd: Re: gcc46 header search path Message-ID: <4FF6DB51.40904@FreeBSD.org> In-Reply-To: <4FF60A9E.5070503@FreeBSD.org> References: <4FF60A9E.5070503@FreeBSD.org>
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Inviting wider audience to the discussion. -------- Original Message -------- Date: Fri, 06 Jul 2012 00:43:58 +0300 From: Andriy Gapon <avg@FreeBSD.org> Subject: Re: gcc46 header search path on 05/07/2012 17:15 Andriy Gapon said the following: > > Gerald, > > while thinking what to reply in our other conversation I ran into another issue > with gcc46: > > $ echo "" | cpp46 -v > [trim] > #include "..." search starts here: > #include <...> search starts here: > /usr/local/lib/gcc46/gcc/x86_64-portbld-freebsd10.0/4.6.3/include > /usr/local/include > /usr/local/lib/gcc46/gcc/x86_64-portbld-freebsd10.0/4.6.3/include-fixed > /usr/include > End of search list. > [trim] > > I don't think that /usr/local/include should automagically appear in the search > list. Base gcc doesn't have it and there doesn't seem to be a good reason to > include "arbitrary" non-system directory into the default search path. > On the other hand the above seems to match the default upstream behavior as described here: http://gcc.gnu.org/onlinedocs/cpp/Search-Path.html It's understandable that such a difference between the base gcc compiler and gcc compilers from ports introduces subtle issues to ports. I am now confused and torn as to which behavior should be preferable. On one hand it's easier to patch the port gcc-s to match the base one. On the other hand the default gcc behavior would save many lines in port makefiles that explicitly add -I ${LOCALBASE}/include or some such to CFLAGS. buildworld and buildkernel (and etc) could be spared from any interference from /usr/local by using -nostdinc and explicitly setting all necessary include paths. Adding more people to conversation in hope that it could become fruitful. -- Andriy Gapon
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