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Date:      Sat, 28 May 2016 02:24:34 -0700
From:      Mark Millard <markmi@dsl-only.net>
To:        Bryan Drewery <bdrewery@FreeBSD.org>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, Gerald Pfeifer <gerald@FreeBSD.org>, Warner Losh <imp@bsdimp.com>
Subject:   Re: svn commit: r297435 - head: still problems for stage 3 when gcc 4.2.1 is avoided (powerpc64 self-hosted build)
Message-ID:  <0FA52C68-43C4-489D-9EB2-2339C2B812F5@dsl-only.net>
In-Reply-To: <C23B8A92-8855-48CE-B442-3C7BEFCEF820@dsl-only.net>
References:  <5A0ACA76-6F1D-4975-9E59-2A64BB8EFC77@dsl-only.net> <56FD9757.6040709@FreeBSD.org> <9E3033D5-F416-4B78-97C2-0A0AABF5A49E@dsl-only.net> <56FDA5F9.1090601@FreeBSD.org> <481DA341-0DFC-4AF1-AD4D-56C5388FA8E3@dsl-only.net> <56FDBAA8.5060407@FreeBSD.org> <7DEF97EC-D970-4F64-AF72-8939609A1D48@dsl-only.net> <DD969902-BCA8-480B-B32F-07DCC6C3E32B@dsl-only.net> <db60bcec-a6c4-02ac-da6c-1ac70821b806@FreeBSD.org> <4953F764-FC4E-491F-A6B7-4CAF65EAAEB7@dsl-only.net> <70a54660-775d-c12c-b991-507d26ce1342@FreeBSD.org> <72F5F9FD-5854-455D-8844-C4E1887DCE9F@dsl-only.net> <C23B8A92-8855-48CE-B442-3C7BEFCEF820@dsl-only.net>

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--with-local-prefix=3D/usr was insufficient to avoid /usr/local/include =
in the search list in powerpc64-gcc:

> ignoring duplicate directory =
"/usr/obj/xtoolchain_noclang/powerpc.powerpc64/usr/src/tmp/usr/include"
> ignoring nonexistent directory =
"/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0/../../../../powerp=
c64-portbld-freebsd11.0/include"
> ignoring duplicate directory =
"/usr/obj/xtoolchain_noclang/powerpc.powerpc64/usr/src/tmp/usr/include"
> #include "..." search starts here:
> #include <...> search starts here:
>  /usr/src/gnu/lib/libssp/libssp_nonshared/..
>  =
/usr/src/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/libss=
p
>  =
/usr/src/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/inclu=
de
>  /usr/obj/xtoolchain_noclang/powerpc.powerpc64/usr/src/tmp/usr/include
>  /usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0/include
>  /usr/local/include
>  /usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0/include-fixed
> End of search list.

Which came from (which shows the --with-local-prefix=3D/usr use):

> Configured with: =
/usr/obj/portswork/usr/ports/devel/powerpc64-gcc/work/gcc-5.3.0/configure =
--target=3Dpowerpc64-portbld-freebsd11.0 --disable-nls =
--enable-languages=3Dc,c++ --without-headers --with-gmp=3D/usr/local =
--with-local-prefix=3D/usr --with-pkgversion=3D'FreeBSD Ports Collection =
for powerpc64' --with-system-zlib =
--with-as=3D/usr/local/bin/powerpc64-freebsd-as =
--with-ld=3D/usr/local/bin/powerpc64-freebsd-ld --prefix=3D/usr/local =
--localstatedir=3D/var --mandir=3D/usr/local/man =
--infodir=3D/usr/local/info/ --build=3Dpowerpc64-portbld-freebsd11.0

In Makefile terms:

> # svnlite diff /usr/ports/devel/powerpc64-gcc/Makefile=20
> Index: /usr/ports/devel/powerpc64-gcc/Makefile
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- /usr/ports/devel/powerpc64-gcc/Makefile	(revision 415874)
> +++ /usr/ports/devel/powerpc64-gcc/Makefile	(working copy)
> @@ -43,6 +43,7 @@
>  CONFIGURE_ARGS+=3D--target=3D${GCC_TARGET} --disable-nls =
--enable-languages=3Dc,c++ \
>  		--without-headers \
>  		--with-gmp=3D${LOCALBASE} \
> +		--with-local-prefix=3D/usr \
>  		--with-pkgversion=3D"FreeBSD Ports Collection for =
${PKGNAMEPREFIX:C/-//g}" \
>  		--with-system-zlib \
>  		--with-as=3D${LOCALBASE}/bin/${BU_PREFIX}-as \


Note: "Specifying --prefix has no effect on which directory GCC searches =
for local header files".

Some interesting wording is: "The same value can be used for both =
--with-local-prefix and --prefix provided it is not /usr" and "This can =
be used to avoid the default search of /usr/local/include". Also: "The =
purpose of --prefix is to specify where to install GCC" and "The local =
header files in /usr/local/include=97if you put any in that =
directory=97are not part of GCC".

My overall interpretation of that is that in my context:

=
--with-local-prefix=3D/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3=
.0

a.k.a.:

--with-local-prefix=3D${LOCALBASE}/lib/gcc/${GCC_TARGET}/${PORTVERSION}

would make for a redundant overall search path without changing the =
ordering.

I have not figured out why /usr/local/include continued to show up and =
/usr/include did not. I wonder if they have special logic for if /usr is =
assigned and so force back there specified default.

I'll try rebuilding devel/powerpc64-gcc again based on:

--with-local-prefix=3D${LOCALBASE}/lib/gcc/${GCC_TARGET}/${PORTVERSION}



=3D=3D=3D
Mark Millard
markmi at dsl-only.net

On 2016-May-27, at 7:35 PM, Mark Millard <markmi at dsl-only.net> wrote:

> On 2016-May-27, at 7:04 PM, Mark Millard <markmi at dsl-only.net> =
wrote:
>=20
>> FYI. . .
>>=20
>> I expect that building gcc49 with:
>>=20
>> +		--with-local-prefix=3D/usr \
>>=20
>> will help with system build activities via gcc49/g++49 by avoiding =
/usr/local/include interfering.
>>=20
>> But I also expect that various port builds based on that same =
gcc49/g++49 will have problems from not explicitly forcing =
/usr/local/include to be looked at when appropriate/required --unless =
something else is in place to do that separately. I expect some implicit =
/usr/local/include references to the likes of some of the below list:
>>=20
>>> # diff -qr /usr/include/ /usr/local/include/ | grep /local/ | more
>>> Only in /usr/local/include/: apr-1
>>> Files /usr/include/atf-c/defs.h and /usr/local/include/atf-c/defs.h =
differ
>>> Only in /usr/local/include/: autosprintf.h
>>> Only in /usr/local/include/: bfd.h
>>> Only in /usr/local/include/: bfdlink.h
>>> Only in /usr/local/include/: boost
>>> Only in /usr/local/include/: curl
>>> Only in /usr/local/include/: db5
>>> Only in /usr/local/include/: dis-asm.h
>>> Files /usr/include/dwarf.h and /usr/local/include/dwarf.h differ
>>> Only in /usr/local/include/: editline
>>> Only in /usr/local/include/: expat.h
>>> Only in /usr/local/include/: expat_config.h
>>> Only in /usr/local/include/: expat_external.h
>>> Only in /usr/local/include/: ffi.h
>>> Only in /usr/local/include/: ffitarget.h
>>> Only in /usr/local/include/: gdbm.h
>>> Only in /usr/local/include/: gettext-po.h
>>> Only in /usr/local/include/: gmp.h
>>> Only in /usr/local/include/: gmpxx.h
>>> Only in /usr/local/include/: gnumake.h
>>> Files /usr/include/histedit.h and /usr/local/include/histedit.h =
differ
>>> Only in /usr/local/include/: idn-free.h
>>> Only in /usr/local/include/: idn-int.h
>>> Only in /usr/local/include/: idna.h
>>> Only in /usr/local/include/: layout
>>> Files /usr/include/libdwarf.h and /usr/local/include/libdwarf.h =
differ
>>> Only in /usr/local/include/: libintl.h
>>> Only in /usr/local/include/: lua52
>>> Only in /usr/local/include/: lutok
>>> Only in /usr/local/include/: mpc.h
>>> Only in /usr/local/include/: mpf2mpfr.h
>>> Only in /usr/local/include/: mpfr.h
>>> Only in /usr/local/include/: pkg.h
>>> Only in /usr/local/include/: plugin-api.h
>>> Only in /usr/local/include/: pr29.h
>>> Only in /usr/local/include/: punycode.h
>>> Only in /usr/local/include/: python2.7
>>> Only in /usr/local/include/: readline
>>> Only in /usr/local/include/: ruby-2.2
>>> Only in /usr/local/include/: serf-1
>>> Only in /usr/local/include/: sqlite3.h
>>> Only in /usr/local/include/: sqlite3ext.h
>>> Only in /usr/local/include/: stringprep.h
>>> Only in /usr/local/include/: subversion-1
>>> Only in /usr/local/include/: sudo_plugin.h
>>> Only in /usr/local/include/: symcat.h
>>> Only in /usr/local/include/: tld.h
>>> Only in /usr/local/include/: unicode
>>> Only in /usr/local/include/: yaml.h
>>=20
>> It might be that even gcc compilers built by the adjusted gcc49 would =
not find, say, gmp.h or mpfr.h .
>>=20
>> dwarfdump's build/install installs /usr/local/include/dwarf.h and =
/usr/local/include/libdwarf.h to match its code. Such examples can need =
careful control over which file is used (here dwarf.h and libdwarf.h in =
/usr/include vs. /usr/local/include ).
>>=20
>> (It will still be some time before I get to switch to this =
with-local-prefix experiment.)
>>=20
>> =3D=3D=3D
>> Mark Millard
>> markmi at dsl-only.net
>=20
> Given the above I may try using
>=20
> +		--with-local-prefix=3D/usr \
>=20
> only for building devel/powerpc64-gcc initially because I do not use =
devel/powerpc64-gcc to build ports, just for system-build activities. =
devel/powerpc64-gcc has the /usr/local/include problem for system build =
activities too.
>=20
> =3D=3D=3D
> Mark Millard
> markmi at dsl-only.net
>=20
>=20
On 2016-May-27, at 5:23 PM, Bryan Drewery <bdrewery at FreeBSD.org> =
wrote:

> On 5/27/2016 5:15 PM, Mark Millard wrote:
>> +		--with-local-prefix=3D/usr/include \
>>=20
>> looks wrong to me. The default is not /usr/local/include but just =
/usr/local . Quoting https://gcc.gnu.org/install/configure.html :
>>=20
>> --with-local-prefix=3Ddirname
>> Specify the installation directory for local include files. The =
default is /usr/local. Specify this option if you want the compiler to =
search directory dirname/include for locally installed header files =
instead of /usr/local/include.
>>=20
>> So your change would generate /usr/include/include for the overall =
include path from what I can tell.
>>=20
>> Do you want:
>>=20
>> +		--with-local-prefix=3D/usr \
>>=20
>> instead?
>=20
> You're right, but it makes no real difference since it removes
> /usr/local/include:
>=20
>> ignoring nonexistent directory =
"/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/x86_=
64-portbld-freebsd11.0/4.9.4/../../../../../x86_64-portbld-freebsd11.0/inc=
lude"
>> ignoring duplicate directory =
"/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/../.=
./../lib/gcc49/gcc/x86_64-portbld-freebsd11.0/4.9.4/include"
>> ignoring nonexistent directory "/usr/include/include"
>=20
> ^ yes wrong
>=20
>> ignoring duplicate directory =
"/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/../.=
./../lib/gcc49/gcc/x86_64-portbld-freebsd11.0/4.9.4/include-fixed"
>> ignoring nonexistent directory =
"/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/../.=
./../lib/gcc49/gcc/x86_64-portbld-freebsd11.0/4.9.4/../../../../../x86_64-=
portbld-freebsd11.0/include"
>> #include "..." search starts here:
>> #include <...> search starts here:
>> =
/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/x86_6=
4-portbld-freebsd11.0/4.9.4/include
>> =
/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/x86_6=
4-portbld-freebsd11.0/4.9.4/include-fixed
>> =
/root/svn/ports/lang/gcc49/work/stage/usr/local/bin/../lib/gcc49/gcc/../..=
/../include
>> /usr/include
>=20
> ^ Still added
>=20
>> End of search list.
>=20
>=20
>=20
> --=20
> Regards,
> Bryan Drewery
>=20
>=20





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