powerpc and powerpc64 builds broken

[Konstantin Belousov]

On Sun, Jun 28, 2015 at 10:32:45PM +0200, Andreas Tobler wrote:
> On 28.06.15 21:32, Konstantin Belousov wrote:
> > On Sun, Jun 28, 2015 at 12:09:25PM -0700, Justin Hibbits wrote:
> >> On Sun, Jun 28, 2015 at 11:36 AM, Garrett Cooper <yaneurabeya at gmail.com> wrote:
> >>>
> >>>> On Jun 28, 2015, at 10:48, Justin Hibbits <jhibbits at freebsd.org> wrote:
> >>>>
> >>>> Both powerpc and powerpc64 builds are broken in the same way, in
> >>>> usr.bin/mkesdb.  It was working correctly as of just before BSDCan, I
> >>>> successfully built world and kernel on June 6.
> >>>>
> >>>> The error seen at this point is:
> >>>>
> >>>> cc  -O2 -pipe   -I/home/chmeee/freebsd/head/usr.bin/mkesdb
> >>>> -I/home/chmeee/freebsd/head/usr.bin/mkesdb/../mkesdb
> >>>> -I/home/chmeee/freebsd/head/usr.bin/mkesdb/../../lib/libc/iconv
> >>>> -std=gnu99 -fstack-protector -Wsystem-headers -Werror -Wall
> >>>> -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes
> >>>> -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual
> >>>> -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align
> >>>> -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
> >>>> -Wold-style-definition -Wno-pointer-sign
> >>>> -L/home/chmeee/world/zhabar/home/chmeee/freebsd/head/usr.bin/mkesdb/../../lib/libc
> >>>> -o mkesdb lex.o yacc.o
> >>>> /home/chmeee/world/zhabar/home/chmeee/freebsd/head/tmp/usr/bin/ld:
> >>>> undefined reference to symbol `_end' (try adding -lc)
> >>>> /home/chmeee/world/zhabar/home/chmeee/freebsd/head/tmp/lib/libc.so.7:
> >>>> could not read symbols: Bad value
> >>>>
> >>>> I've seen this both locally on my G5, and on the Power8 in the FreeBSD cluster.
> >>>
> >>> - What does file say when you run it on libc.so.7?
> >>
> >> /usr/obj/usr/src/lib/libc/libc.so.7: ELF 64-bit MSB shared object,
> >> 64-bit PowerPC or cisco 7500, version 1 (FreeBSD), dynamically linked,
> >> not stripped
> > I think a libc linker could try for that command line lives in
> > /home/chmeee/world/zhabar/home/chmeee/freebsd/head/lib/libc/libc.so
> > or in
> > /home/chmeee/world/zhabar/home/chmeee/freebsd/head/tmp/lib/libc.so
> >
> > But, the reason for your troubles seems to come from the
> > usr.bin/mkesdb/Makefile.  Why does it explicitely adds LDFLAGS to point
> > to objdir/.../libc, I have no idea.
> 
> 
> Neither me.
> 
> Here with this mods it compiles:
> 
> Either:
> 
> --- Makefile	(revision 284911)
> +++ Makefile	(working copy)
> @@ -3,7 +3,7 @@
>   .PATH: ${.CURDIR}/../../lib/libc/iconv
> 
>   PROG=	mkesdb
> -LDFLAGS+= -L${.OBJDIR}/../../lib/libc
> +LDFLAGS+= -L${.OBJDIR}/../../lib/libc/libc
> 
>   NO_WMISSING_VARIABLE_DECLARATIONS=
> 
> 
> Or:
> 
> Index: Makefile
> ===================================================================
> --- Makefile	(revision 284911)
> +++ Makefile	(working copy)
> @@ -3,7 +3,7 @@
>   .PATH: ${.CURDIR}/../../lib/libc/iconv
> 
>   PROG=	mkesdb
> -LDFLAGS+= -L${.OBJDIR}/../../lib/libc
> +LDFLAGS+= -L${.CURDIR}/../../lib/libc
> 
>   NO_WMISSING_VARIABLE_DECLARATIONS=

No, I mean that LDFLAGS explicitely listing supposed location for libc
is wrong, too much wrong.  If mkesd is special, it might need to become
a bootstrap tool.  But the hackery above is too fragile and it is surprising
that it went unnoticed for such long time (after the citrus enablement).