Date: Sun, 15 Mar 2015 23:07:16 -0700 From: Mark Millard <markmi@dsl-only.net> To: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, freebsd-toolchain@freebsd.org Subject: Re: powerpc (non-64) using CROSS_TOOLCHAIN=powerpc64-gcc fails: .TOC.@tocbase notation not recognized Message-ID: <1D5C9892-8660-4370-BD29-AD2037E99C73@dsl-only.net> In-Reply-To: <9855CD5C-9086-412F-AD5B-370EAC58D4EC@dsl-only.net> References: <9855CD5C-9086-412F-AD5B-370EAC58D4EC@dsl-only.net>
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In reading my note: Be warned that something is replacing the at-signs =
in the assembler notation with "at" with an underscore before and after. =
The original I sent was not like that.
=3D=3D=3D
Mark Millard
markmi at dsl-only.net
On 2015-Mar-13, at 10:43 PM, Mark Millard <markmi at dsl-only.net> =
wrote:
Basic execution context:
> # freebsd-version -ku; uname -ap
> 11.0-CURRENT
> 11.0-CURRENT
> FreeBSD FBSDG4C0 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r279514M: Mon =
Mar 9 22:24:27 PDT 2015 =
root@FBSDG4S0:/usr/obj/usr/srcC/sys/GENERICvtsc-NODEBUG powerpc powerpc
Attmpted: make -j 8 CROSS_TOOLCHAIN=3Dpowerpc64-gcc buildworld =
buildkernel KERNCONF=3DGENERIC64vtsc-NODEBUG TARGET=3DpowerPC =
TARGET_ARCH=3Dpowerpc64
> # more /etc/src.conf=20
> #CPP=3Dclang-cpp
> #CC=3Dclang
> #CXX=3Dclang++
> #CFLAGS+=3D-DELF_VERBOSE
> #WITH_DEBUG_FILES=3D
> WITHOUT_CLANG=3D
> NO_WERROR=3D
Note that CROSS_TOOLCHAIN=3Dpowerpc64-gcc means the produced files are =
ELF 64-bit (even if TARGET_ARCH and/or KERNCONF indicates powerpc). I =
remembered to type GENERIC64vtsc to match. :) I had to explicitly supply =
TARGET_ARCH=3Dpowerpc64 or it would pick TARGET_ARCH=3Dpowerpc instead.
WITHOUT_CLANG=3D avoids various build issues, including lack of any =
sufficient c++11 library for building clang.
NO_WERROR=3D avoids stopping for warnings that would prevent the build. =
I did not figure out any finer grain level of control for a basic =
experiment.
The problem (something needed else to control configuration?):
...
> --- crti.o ---^M
> gcc -O2 -pipe -I/usr/srcC/lib/csu/powerpc64/../common =
-I/usr/srcC/lib/csu/powerpc64/../../libc/include -mlongcall -std=3Dgnu99 =
-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 -c =
/usr/srcC/lib/csu/powerpc64/crti.S^M
> ...
> /usr/srcC/lib/csu/powerpc64/crti.S: Assembler messages:^M
> /usr/srcC/lib/csu/powerpc64/crti.S:35: Error: junk at end of line, =
first unrecognized character is `@'^M
> /usr/srcC/lib/csu/powerpc64/crti.S:51: Error: junk at end of line, =
first unrecognized character is `@'^M
> *** [crti.o] Error code 1^M
> ^M
(gcc: so the old compiler is used for assembly of sources.)
The lines of crti.S in question are:
> .quad .L._init,.TOC.@tocbase,0
> ...
> .quad .L._fini,.TOC.@tocbase,0
The crti.S code (starting at the #include) is:
> #include <machine/asm.h>
> __FBSDID("$FreeBSD: head/lib/csu/powerpc64/crti.S 218824 2011-02-18 =
21:44:53Z nwhitehorn $");
>=20
> .section .init,"ax",@progbits
> .align 2
> .globl _init
> .section ".opd","aw"
> .align 3
> _init:
> .quad .L._init,.TOC.@tocbase,0
> .previous
> .type _init,@function
>=20
> .align 4
> .L._init:
> stdu 1,-48(1)
> mflr 0
> std 0,64(1)
>=20
> .section .fini,"ax",@progbits
> .align 2
> .globl _fini
> .section ".opd","aw"
> .align 3
> _fini:
> .quad .L._fini,.TOC.@tocbase,0
> .previous
> .type _fini,@function
>=20
> .align 4
> .L._fini:
> stdu 1,-48(1)
> mflr 0
> std 0,64(1)
>=20
> .section .note.GNU-stack,"",%progbits
Other context details:
> # more /etc/make.conf
> #CPP=3Dclang-cpp
> #CC=3Dclang
> #CXX=3Dclang++
> WRKDIRPREFIX=3D/usr/obj/portswork
> #WITH_DEBUG=3D
> MALLOC_PRODUCTION=3D
> # svnlite info
> Path: .
> Working Copy Root Path: /usr/srcC
> URL: https://svn0.us-west.freebsd.org/base/head
> Relative URL: ^/head
> Repository Root: https://svn0.us-west.freebsd.org/base
> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
> Revision: 279514
> Node Kind: directory
> Schedule: normal
> Last Changed Author: adrian
> Last Changed Rev: 279514
> Last Changed Date: 2015-03-01 18:27:25 -0800 (Sun, 01 Mar 2015)
> # svnlite info
> Path: .
> Working Copy Root Path: /usr/ports
> URL: https://svn0.us-west.freebsd.org/ports/head
> Relative URL: ^/head
> Repository Root: https://svn0.us-west.freebsd.org/ports
> Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
> Revision: 380683
> Node Kind: directory
> Schedule: normal
> Last Changed Author: demon
> Last Changed Rev: 380683
> Last Changed Date: 2015-03-07 03:31:11 -0800 (Sat, 07 Mar 2015)
=3D=3D=3D
Mark Millard
markmi at dsl-only.net
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