Date: Fri, 11 May 2018 16:09:02 -0700 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: freebsd-toolchain@freebsd.org, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: What fails when devel/xtoolchain-llvm60 attempts to build powerpc64's lib32 in buildworld cross builds (from amd64 here) Message-ID: <E7B0A9B4-51FE-4B23-ACF1-A5ACA01B89FE@yahoo.com> In-Reply-To: <81EA8FB2-101B-4D31-A2D4-91CCB78AF695@yahoo.com> References: <81EA8FB2-101B-4D31-A2D4-91CCB78AF695@yahoo.com>
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[I experiment with targeting powerpc family members with
modern tool chains. In this case trying to use
devel/xtoolchain-llvm60 . This was indirectly reached via
commenting on a bugzilla entry for something else powerpc
family related.]
BEGIN setup notes:
Because of (at least) lld problems for targeting powerpc family members,
the following is based on an alternate toolchains/*.mk :
# diff /usr/local/share/toolchains/llvm60.mk =
/usr/local/share/toolchains/llvm60_altbinutils.mk
4,5c4,5
< XLD=3D/usr/local/llvm60/bin/ld.lld
< CROSS_BINUTILS_PREFIX=3D/var/empty
---
=20
> #XLD=3D/usr/local/llvm60/bin/ld.lld
> #CROSS_BINUTILS_PREFIX=3D/var/empty
This is to allow setting up the use of:
CROSS_BINUTILS_PREFIX=3D/usr/local/powerpc64-unknown-freebsd12.0/bin/
END Setup notes.
The below is from adding a -v to what the .meta file showed for the =
failing command.
Note the "-cc1as -triple i386-portbld-freebsd12.0" and "-target-cpu =
i486" that results
from buildworld=E2=80=99s lib32 related command that tries to compile =
assembly source for
powerpc.
# /usr/local/bin/clang60 -v -DCOMPAT_32BIT -mcpu=3Dpowerpc -m32 =
-L/usr/obj/powerpc64vtsc_xtoolchain-llvm/powerpc.powerpc64/usr/src/powerpc=
.powerpc64/obj-lib32/tmp/usr/lib32 =
tosysroot=3D/usr/obj/powerpc64vtsc_xtoolchain-llvm/powerpc.powerpc64/usr/s=
rc/powerpc.powerpc64/obj-lib32/tmp =
-B/usr/local/powerpc64-unknown-freebsd12.0/bin =
-B/usr/obj/powerpc64vtsc_x -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 -Wthread-safety -Wno-empty-body -Wno-string-plus-int =
-Wno-unused-const-variable -Qunused-arguments -c =
/usr/src/lib/csu/powerpc/crtn.S -o crtn.ole-definition -Wno-pointer-sign =
-Wthread-safety -Wno-empty-body -Wno-string-plus-int -Wno-unus
clang version 6.0.0 =
(tags/RELEASE_600/final)/usr/src/lib/csu/powerpc/crtn.S -o crtn.o
Target: i386-portbld-freebsd12.0
Thread model: posix
InstalledDir: /usr/local/llvm60/bin
"/usr/local/llvm60/bin/clang-6.0" -cc1 -triple i386-portbld-freebsd12.0 =
-E -disable-free -main-file-name crtn.S -mrelocation-model static =
-mthread-model posix -mdisable-fp-elim -masm-verbose =
-mconstructor-aliases -target-cpu i486 -dwarf-column-info =
-debug-info-kind=3Dstandalone -dwarf-version=3D2 -debugger-tuning=3Dgdb =
-v -coverage-notes-file /usr/src/crtn.gcno -resource-dir =
/usr/local/llvm60/lib/clang/6.0.0 -D COMPAT_32BIT -I =
/usr/src/lib/csu/common -I /usr/src/lib/libc/include -isysroot =
/usr/obj/powerpc64vtsc_xtoolchain-llvm/powerpc.powerpc64/usr/src/powerpc.p=
owerpc64/obj-lib32/tmp -O2 -Wsystem-headers -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 -Wthread-safety -Wno-empty-body -Wno-string-plus-int =
-Wno-unused-const-variable -std=3Dgnu99 -fconst-strings =
-fdebug-compilation-dir /usr/src -ferror-limit 19 -fmessage-length 180 =
-fobjc-runtime=3Dgnustep -fdiagnostics-show-option -vectorize-loops =
-vectorize-slp -o /tmp/crtn-d80df9.s -x assembler-with-cpp =
/usr/src/lib/csu/powerpc/crtn.S
clang -cc1 version 6.0.0 based upon LLVM 6.0.0 default target =
x86_64-portbld-freebsd12.0
#include "..." search starts here:
#include <...> search starts here:
/usr/src/lib/csu/common
/usr/src/lib/libc/include
/usr/local/llvm60/lib/clang/6.0.0/include
=
/usr/obj/powerpc64vtsc_xtoolchain-llvm/powerpc.powerpc64/usr/src/powerpc.p=
owerpc64/obj-lib32/tmp/usr/include
End of search list.
"/usr/local/llvm60/bin/clang-6.0" -cc1as -triple =
i386-portbld-freebsd12.0 -filetype obj -main-file-name crtn.S =
-target-cpu i486 -I /usr/src/lib/csu/common -I /usr/src/lib/libc/include =
-fdebug-compilation-dir /usr/src -dwarf-debug-producer clang version =
6.0.0 (tags/RELEASE_600/final) -I /usr/src/lib/csu/common -I =
/usr/src/lib/libc/include -debug-info-kind=3Dlimited -dwarf-version=3D2 =
-mrelocation-model static -o crtn.o /tmp/crtn-d80df9.s
/usr/src/lib/csu/powerpc/crtn.S:29:2: warning: DWARF2 only supports one =
section per compilation unit
.section .init,"ax",@progbits
^
/usr/src/lib/csu/powerpc/crtn.S:30:11: error: unexpected token in memory =
operand
lwz 11,0(1)
^
/usr/src/lib/csu/powerpc/crtn.S:31:10: error: unexpected token in memory =
operand
lwz 0,4(11)
^
/usr/src/lib/csu/powerpc/crtn.S:32:2: error: invalid instruction =
mnemonic 'mtlr'
mtlr 0
^~~~
. . .
It would appear that a -triple may be missing in the =
/usr/local/bin/clang60
command line that would specify the specific ABI to target. It appears =
that
the -mcpu=3Dpowerpc is not enough to even get the cpu family right as =
far as
what assembler notation to process.
I do not know if an appropriate -triple addition would currently be
sufficient for things to start working.
Something needs to cause the right assembler notation to be processed =
for
lib32 if WITH_LIB32=3D is to be supported for cross builds.
=3D=3D=3D
Mark Millard
marklmi26-fbsd at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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