svn commit: r297435 - head: still problems for stage 3 when gcc 4.2.1 is avoided (powerpc64 self-hosted build)

[Mark Millard]

[Top post of failure to get rid of /usr/local/include from devel/powerpc64-gcc search list.]

I have tried:

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

which when rebuilt in a powerpc64 context shows up with:

--with-local-prefix=/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0

in the "Configured with" (from using -v):

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

But /usr/local/include still shows up in the search list, for example:

> ignoring nonexistent directory "/usr/obj/xtoolchain_noclang/powerpc.powerpc64/usr/src/tmp/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0/include"
> ignoring nonexistent directory "/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0/../../../../powerpc64-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/lib/msun/powerpc
>  /usr/src/lib/msun/src
>  /usr/src/lib/libc/include
>  /usr/src/lib/libc/powerpc
>  /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.

[Despite some prior mis-wording in other messages: The line match for --with-local-prefix= 's value with "/include" appended matches the line prior to /usr/local/include in the search list, not the following line.]

So far I'm unsuccessful at avoiding /usr/local/include being in the search list. I'm still at the stage of C_INCLUDE_PAPTH and CPLUS_INCLUDE_PATH being the best means that I've found to force /usr/include based paths to win when there are conflicts in /usr/local/include from ports that have been built.


So far I'm only doing the experiment with devel/powerpc64-gcc (used as the so-called "cross compiler" in my powerpc64 self-hosted context), not with the lang/gcc49 that I use as the system compiler. For lang/gcc49 I'm still using C_INCLUDE_PAPTH and CPLUS_INCLUDE_PATH to avoid /usr/local/include based paths from finding files. In part this is because I expect port building problems if I use lang/gcc49 to build ports without lang/gcc49 having /usr/local/include implicitly. I do not use devel/powerpc64-gcc to build ports.

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

On 2016-May-28, at 2:24 AM, Mark Millard <markmi at dsl-only.net> wrote:

> --with-local-prefix=/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/../../../../powerpc64-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/libssp
>> /usr/src/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/include
>> /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=/usr use):
> 
>> Configured with: /usr/obj/portswork/usr/ports/devel/powerpc64-gcc/work/gcc-5.3.0/configure --target=powerpc64-portbld-freebsd11.0 --disable-nls --enable-languages=c,c++ --without-headers --with-gmp=/usr/local --with-local-prefix=/usr --with-pkgversion='FreeBSD Ports Collection for powerpc64' --with-system-zlib --with-as=/usr/local/bin/powerpc64-freebsd-as --with-ld=/usr/local/bin/powerpc64-freebsd-ld --prefix=/usr/local --localstatedir=/var --mandir=/usr/local/man --infodir=/usr/local/info/ --build=powerpc64-portbld-freebsd11.0
> 
> In Makefile terms:
> 
>> # svnlite diff /usr/ports/devel/powerpc64-gcc/Makefile 
>> Index: /usr/ports/devel/powerpc64-gcc/Makefile
>> ===================================================================
>> --- /usr/ports/devel/powerpc64-gcc/Makefile	(revision 415874)
>> +++ /usr/ports/devel/powerpc64-gcc/Makefile	(working copy)
>> @@ -43,6 +43,7 @@
>> CONFIGURE_ARGS+=--target=${GCC_TARGET} --disable-nls --enable-languages=c,c++ \
>> 		--without-headers \
>> 		--with-gmp=${LOCALBASE} \
>> +		--with-local-prefix=/usr \
>> 		--with-pkgversion="FreeBSD Ports Collection for ${PKGNAMEPREFIX:C/-//g}" \
>> 		--with-system-zlib \
>> 		--with-as=${LOCALBASE}/bin/${BU_PREFIX}-as \
> 
> 
> Note: "Specifying --prefix has no effect on which directory GCC searches for local header files".
> 
> Some interesting wording is: "The same value can be used for both --with-local-prefix and --prefix provided it is not /usr" and "This can be used to avoid the default search of /usr/local/include". Also: "The purpose of --prefix is to specify where to install GCC" and "The local header files in /usr/local/include—if you put any in that directory—are not part of GCC".
> 
> My overall interpretation of that is that in my context:
> 
> --with-local-prefix=/usr/local/lib/gcc/powerpc64-portbld-freebsd11.0/5.3.0
> 
> a.k.a.:
> 
> --with-local-prefix=${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=${LOCALBASE}/lib/gcc/${GCC_TARGET}/${PORTVERSION}
> 
> 
> 
> ===
> Mark Millard
> markmi at dsl-only.net