Re: ports head -r487783: on armv7 x11/pixman fails to build: /usr/bin/ld: error: can't create dynamic relocation R_ARM_V4BX against local symbol in readonly segment; recompile object files with -fPI
[The update to lld/trunk/ELF/Arch/ARM.cpp will not fix
what we have run into.]
On 2018-Nov-16, at 19:35, Mark Millard wrote:
> Such timing: https://reviews.llvm.org/D53444 indicates
> commits to lld/trunk/ELF/Arch/ARM.cpp today (2018-Nov-16)
> to support R_ARM_V4BX in lld.
>
> (No update text below. The above just did not fit well.)
>
> On 2018-Nov-16, at 18:49, Mark Millard wrote:
>
>
>> On 2018-Nov-16, at 18:15, Mark Millard wrote:
>>
>>>
>>> I finally figured out parts of the issue, I think.
>>> At least how the V_ARM_V4BX use is getting there
>>> despite lld's status for handling it . . .
>>>
>>> On armv7:
>>>
>>> # more test_bx_lr.S
>>> .text
>>> .arch armv6
>>> .object_arch armv4
>>> .arm
>>> .altmacro
>>> .p2align 2
>>> .func fname
>>> .global fname
>>> .hidden fname
>>> .type fname, %function
>>> fname:
>>> bx lr
>>>
>>> (I got those lines from the failing port's .S files,
>>> including includes. Note the .object_arch armv4 use
>>> and the forced armv6, not armv7.)
>>
>> For reference relative to the use of .object_arch armv4 :
>>
>> # grep -r object_arch
>> /wrkdirs/usr/ports/x11/pixman/work/pixman-0.34.0/pixman/ | more
>> /wrkdirs/usr/ports/x11/pixman/work/pixman-0.34.0/pixman/pixman-arm-neon-asm.S:
>> .object_arch armv4
>> /wrkdirs/usr/ports/x11/pixman/work/pixman-0.34.0/pixman/pixman-arm-simd-asm-scaled.S:
>>.object_arch armv4
>> /wrkdirs/usr/ports/x11/pixman/work/pixman-0.34.0/pixman/pixman-arm-neon-asm-bilinear.S:.object_arch
>> armv4
>> /wrkdirs/usr/ports/x11/pixman/work/pixman-0.34.0/pixman/pixman-arm-simd-asm.S:
>> .object_arch armv4
>>
>> Without .object_arch armv4 the assembler involved does not output
>> the V_ARM_V4BX *ABS* relocation records (adjusted the small example):
>>
>> # objdump -x test_bx_lr.o | more
>>
>> test_bx_lr.o: file format elf32-littlearm
>> test_bx_lr.o
>> architecture: arm, flags 0x0010:
>> HAS_SYMS
>> start address 0x
>> private flags = 500: [Version5 EABI]
>>
>> Sections:
>> Idx Name Size VMA LMA File off Algn
>> 0 .text 0004 0034 2**2
>> CONTENTS, ALLOC, LOAD, READONLY, CODE
>> 1 .data 0038 2**0
>> CONTENTS, ALLOC, LOAD, DATA
>> 2 .bss 0038 2**0
>> ALLOC
>> 3 .ARM.attributes 001b 0038 2**0
>> CONTENTS, READONLY
>> SYMBOL TABLE:
>> ld .text .text
>> ld .data .data
>> ld .bss .bss
>> ld .ARM.attributes .ARM.attributes
>> g F .text .hidden fname
>>
>>
>>
>>> # clang -target armv7-unknown-freebsd13.0-gnueabihf -O -pipe
>>> -no-integrated-as -MT test_bx_lr.lo -MD -MP -MF test_bx_lr.Tpo -c
>>> test_bx_lr.S -fPIC -DPIC -o test_bx_lr.o
>>>
>>> (The -target is not necessary. I just choose to be explicit.)
>>>
>>> # objdump -x test_bx_lr.o | more
>>>
>>> test_bx_lr.o: file format elf32-littlearm
>>> test_bx_lr.o
>>> architecture: armv4, flags 0x0011:
>>> HAS_RELOC, HAS_SYMS
>>> start address 0x
>>> private flags = 500: [Version5 EABI]
>>>
>>> Sections:
>>> Idx Name Size VMA LMA File off Algn
>>> 0 .text 0004 0034 2**2
>>>CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>>> 1 .data 0038 2**0
>>>CONTENTS, ALLOC, LOAD, DATA
>>> 2 .bss 0038 2**0
>>>ALLOC
>>> 3 .ARM.attributes 001b 0038 2**0
>>>CONTENTS, READONLY
>>> SYMBOL TABLE:
>>> ld .text .text
>>> ld .data .data
>>> ld .bss .bss
>>> ld .ARM.attributes .ARM.attributes
>>> g F .text .hidden fname
>>>
>>>
>>> RELOCATION RECORDS FOR [.text]:
>>> OFFSET TYPE VALUE
>>> R_ARM_V4BX*ABS*
>>>
>>>
>>> truss for that cc command reports looking in many
>>> places for as, finally finding /usr/local/bin/as :
>>>
>>> access("/usr/bin/armv7-unknown-freebsd13.0-gnueabihf-as",X_OK|R_OK) ERR#2
>>> 'No such file or directory'
>>> access("/usr/bin/as",X_OK|R_OK) ERR#2 'No such file or
>>> directory'
>>>
>>> (Note: based on WITHOUT_BINUTILS= for buildworld the above would normally
>>> not be found. But for WITH_BINUTILS= the host as would be found.)
>>>
>>> access("/sbin/armv7-unknown-freebsd13.0-gnueabihf-as",X_OK|R_OK) ERR#2 'No
>>> such file or directory'
>>> access("/bin/armv7-unknown-freebsd13.0-gnueabihf-as",X_OK|R_OK) ERR#2 'No
>>> such file or directory'
>>> access("/usr/sbin/armv7-unknown-freebsd13.0-
INDEX build failed for 11.x
INDEX build failed with errors: Generating INDEX-11 - please wait..--- describe.accessibility --- --- describe.arabic --- --- describe.archivers --- --- describe.astro --- --- describe.audio --- --- describe.benchmarks --- --- describe.biology --- --- describe.cad --- --- describe.chinese --- --- describe.comms --- --- describe.converters --- --- describe.databases --- --- describe.deskutils --- --- describe.devel --- --- describe.dns --- --- describe.editors --- --- describe.emulators --- --- describe.finance --- --- describe.french --- --- describe.ftp --- [...] --- describe.print --- --- describe.russian --- --- describe.science --- --- describe.security --- --- describe.shells --- --- describe.sysutils --- --- describe.textproc --- --- describe.ukrainian --- --- describe.vietnamese --- --- describe.www --- --- describe.x11 --- --- describe.x11-clocks --- --- describe.x11-drivers --- --- describe.x11-fm --- --- describe.x11-fonts --- --- describe.x11-servers --- --- describe.x11-themes --- --- describe.x11-toolkits --- --- describe.x11-wm --- Done. make_index: /home/indexbuild/tindex/ports/sysutils/desktop-installer: no entry for /home/indexbuild/tindex/ports/wip/auto-admin Committers on the hook: antoine arved fernape joneum jwb ume yuri Most recent SVN update was: Updating '.': Ugraphics/tiff/Makefile Ugraphics/tiff/distinfo Dgraphics/tiff/files/patch-CVE-2017-18013 Dgraphics/tiff/files/patch-CVE-2017-9935 Ugraphics/tiff/files/patch-Makefile.in Ugraphics/tiff/files/patch-tiffcrop.1 Ugraphics/tiff/pkg-plist Usysutils/desktop-installer/Makefile Usysutils/desktop-installer/distinfo Usysutils/desktop-installer/pkg-plist Usysutils/auto-admin/Makefile Usysutils/auto-admin/distinfo Usysutils/auto-admin/pkg-plist Utextproc/retext/Makefile Uaudio/csound6/Makefile Uaudio/csound6/distinfo Daudio/csound6/files/patch-frontends_CsoundAC_ChordSpace.hpp Daudio/csound6/files/patch-frontends_CsoundAC_Counterpoint.cpp Daudio/csound6/files/patch-frontends_CsoundAC_Composition.cpp Daudio/csound6/files/patch-Opcodes_chua_ChuaOscillator.cpp Daudio/csound6/files/patch-frontends_CsoundAC_Counterpoint.hpp Aaudio/csound6/files/patch-CMakeLists.txt Uaudio/csound6/files/patch-InOut_rtalsa.c Aaudio/csound6/files/patch-Opcodes_stk_CMakeLists.txt Uaudio/csound6/files/patch-Top_csound.c Aaudio/csound6/files/patch-cmake_Modules_FindFAUST.cmake Uaudio/csound6/pkg-descr Uaudio/csound6/pkg-plist Usecurity/cyrus-sasl2/Makefile Usecurity/cyrus-sasl2/Makefile.common Usecurity/cyrus-sasl2/distinfo Dsecurity/cyrus-sasl2/files/patch-plugins_srp.c Dsecurity/cyrus-sasl2/files/patch-plugins_ntlm.c Dsecurity/cyrus-sasl2/files/patch-plugins__ldapdb.c Dsecurity/cyrus-sasl2/files/patch-Makefile.am Dsecurity/cyrus-sasl2/files/patch-plugins_passdss.c Dsecurity/cyrus-sasl2/files/patch-crypto-compat.c Dsecurity/cyrus-sasl2/files/patch-crypto-compat.h Dsecurity/cyrus-sasl2/files/patch-saslauthd_Makefile.am Dsecurity/cyrus-sasl2/files/patch-sasldb_db__ndbm.c Dsecurity/cyrus-sasl2/files/patch-libsasl2.pc.in Dsecurity/cyrus-sasl2/files/patch-include__sasl.h Dsecurity/cyrus-sasl2/files/patch-saslauthd_lak.c Dsecurity/cyrus-sasl2/files/patch-plugins_Makefile.am Dsecurity/cyrus-sasl2/files/patch-saslauthd__configure Dsecurity/cyrus-sasl2/files/patch-plugins_otp.c Dsecurity/cyrus-sasl2/files/patch-lib_Makefile.am Dsecurity/cyrus-sasl2/files/patch-saslauthd__saslcache.c Usecurity/cyrus-sasl2/files/patch-configure Usecurity/cyrus-sasl2/files/patch-plugins_gssapi.c Usecurity/cyrus-sasl2/files/pkg-deinstall.in Usecurity/cyrus-sasl2/files/pkg-install.in Usecurity/cyrus-sasl2/pkg-plist Usecurity/cyrus-sasl2-gssapi/Makefile Usecurity/cyrus-sasl2-gssapi/pkg-descr Usecurity/cyrus-sasl2-ldapdb/Makefile Usecurity/cyrus-sasl2-ldapdb/pkg-descr Usecurity/cyrus-sasl2-saslauthd/Makefile Usecurity/cyrus-sasl2-saslauthd/pkg-descr Usecurity/cyrus-sasl2-saslauthd/pkg-plist Usecurity/cyrus-sasl2-sql/pkg-descr Usecurity/cyrus-sasl2-srp/pkg-descr Usecurity/vuxml/vuln.xml Dmisc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpc-12.0-BETA1 Dmisc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpc-12.0-BETA2 D misc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpcspe-12.0-BETA1 D misc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpcspe-12.0-BETA2 Dmisc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpc64-12.0-BETA1 Dmisc/freebsd-release-manifests/files/MANIFESTS/powerpc-powerpc64-12.0-BETA2 Dmisc/freebsd-release-manifests/files/MANIFESTS/arm64-aarch64-12.0-BETA1 Dmisc/freebsd-release-manifests/files/MANIFESTS/arm64-aarch64-12.0-BETA2 Dmisc/freebsd-release-manifests/files/MANIFESTS/amd64-amd64-12.0-BETA1 Dmisc/freebsd-release-manifests/files/MANIFESTS/amd64-am
INDEX now builds successfully on 11.x
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