* [SDK] How to use the gold linker @ 2020-12-14 11:14 Christian Eggers 2020-12-14 22:09 ` [OE-core] " Khem Raj 0 siblings, 1 reply; 5+ messages in thread From: Christian Eggers @ 2020-12-14 11:14 UTC (permalink / raw) To: openembedded-core Branch: dunfell Arch: arm When I set -fuse-ld=gold with the Yocto SDK, the bfd linker is used anyway: > . /opt/poky-tiny/3.1.4/environment-setup-cortexa7t2hf-neon-vfpv4-poky-linux-musleabi > ${CC} -fuse-ld=gold -Wl,--threads -o test test.c /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: unrecognized option '--threads' /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: use the --help option for usage information When I call the "real-ld" with -h, I can see that it's the BFD linker. > ${CC} -print-prog-name=ld /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > ${CC} -fuse-ld=bfd -print-prog-name=ld ld.bfd > ${CC} -fuse-ld=gold -print-prog-name=ld ld.gold Compared to other cross toolchains I use, the output of the previous two commands miss the full path to the linker. The gold linker is part of my SDK: > arm-poky-linux-musleabi-ld.gold --help Usage: arm-poky-linux-musleabi-ld.gold [options] file... Options: --help Report usage information ... How can I use the gold linker from gcc (without making it default)? regards Christian ________________________________ [http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg] <https://microsites.arri.com/stellar/> Get all the latest information from www.arri.com<https://www.arri.com/>, Facebook<https://www.facebook.com/TeamARRI>, Twitter<https://twitter.com/ARRIChannel>, Instagram<https://instagram.com/arri> and YouTube<https://www.youtube.com/user/ARRIChannel>. Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRA 57918 Persönlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRB 54477 Geschäftsführer: Dr. Michael Neuhäuser; Stephan Schenk; Walter Trauninger; Markus Zeiler ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [OE-core] [SDK] How to use the gold linker 2020-12-14 11:14 [SDK] How to use the gold linker Christian Eggers @ 2020-12-14 22:09 ` Khem Raj [not found] ` <CABcZAN=QdWzV=LObrdHMWfcDx_1VV3Ce-i_nYL3H7WYUcCtSSA@mail.gmail.com> 0 siblings, 1 reply; 5+ messages in thread From: Khem Raj @ 2020-12-14 22:09 UTC (permalink / raw) To: openembedded-core On 12/14/20 3:14 AM, Christian Eggers wrote: > Branch: dunfell > Arch: arm > > When I set -fuse-ld=gold with the Yocto SDK, the bfd linker is used anyway: > >> . /opt/poky-tiny/3.1.4/environment-setup-cortexa7t2hf-neon-vfpv4-poky-linux-musleabi >> ${CC} -fuse-ld=gold -Wl,--threads -o test test.c > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: unrecognized option '--threads' > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: use the --help option for usage information > > When I call the "real-ld" with -h, I can see that it's the BFD linker. > >> ${CC} -print-prog-name=ld > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > >> ${CC} -fuse-ld=bfd -print-prog-name=ld > ld.bfd > >> ${CC} -fuse-ld=gold -print-prog-name=ld > ld.gold > > Compared to other cross toolchains I use, the output of the previous two commands > miss the full path to the linker. The gold linker is part of my SDK: > >> arm-poky-linux-musleabi-ld.gold --help > Usage: arm-poky-linux-musleabi-ld.gold [options] file... > Options: > --help Report usage information > ... > > How can I use the gold linker from gcc (without making it default)? > This is kind of known and kind of works as intended, see https://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gcc/gcc-cross-canadian.inc#n132 You might want to try commenting it out and see if it works for you in resulting SDK > regards > Christian > > > > ________________________________ > [http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg] <https://microsites.arri.com/stellar/> > > Get all the latest information from www.arri.com<https://www.arri.com/>, Facebook<https://www.facebook.com/TeamARRI>, Twitter<https://twitter.com/ARRIChannel>, Instagram<https://instagram.com/arri> and YouTube<https://www.youtube.com/user/ARRIChannel>. > > Arnold & Richter Cine Technik GmbH & Co. Betriebs KG > Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRA 57918 > Persönlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH > Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRB 54477 > Geschäftsführer: Dr. Michael Neuhäuser; Stephan Schenk; Walter Trauninger; Markus Zeiler > > > > > ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <CABcZAN=QdWzV=LObrdHMWfcDx_1VV3Ce-i_nYL3H7WYUcCtSSA@mail.gmail.com>]
* Re: [OE-core] [SDK] How to use the gold linker [not found] ` <CABcZAN=QdWzV=LObrdHMWfcDx_1VV3Ce-i_nYL3H7WYUcCtSSA@mail.gmail.com> @ 2020-12-15 17:15 ` Khem Raj 2020-12-18 11:30 ` Christian Eggers 0 siblings, 1 reply; 5+ messages in thread From: Khem Raj @ 2020-12-15 17:15 UTC (permalink / raw) To: Christopher Larson; +Cc: Patches and discussions about the oe-core layer On 12/15/20 8:50 AM, Christopher Larson wrote: > This can be fixed via two changes, first removing real-ld, then adding > the missing links to fix -fuse-ld=. I have this in one of my > not-yet-submitted bbappends: > > # Remove real-ld, as it prevents checking for ld or gold in the > search path > rm -f ${dest}real-ld$suffix > # Then add links to fix builds with -fuse-ld= > ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.gold$suffix > ${dest}ld.gold$suffix > ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.bfd$suffix ${dest}ld.bfd$suffix > right this looks ok. Can you submit this for upstreaming please > On Mon, Dec 14, 2020 at 3:09 PM Khem Raj <raj.khem@gmail.com > <mailto:raj.khem@gmail.com>> wrote: > > > > On 12/14/20 3:14 AM, Christian Eggers wrote: > > Branch: dunfell > > Arch: arm > > > > When I set -fuse-ld=gold with the Yocto SDK, the bfd linker is > used anyway: > > > >> . > /opt/poky-tiny/3.1.4/environment-setup-cortexa7t2hf-neon-vfpv4-poky-linux-musleabi > >> ${CC} -fuse-ld=gold -Wl,--threads -o test test.c > > > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: > unrecognized option '--threads' > > > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/real-ld: > use the --help option for usage information > > > > When I call the "real-ld" with -h, I can see that it's the BFD > linker. > > > >> ${CC} -print-prog-name=ld > > > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > > > >> ${CC} -fuse-ld=bfd -print-prog-name=ld > > ld.bfd > > > >> ${CC} -fuse-ld=gold -print-prog-name=ld > > ld.gold > > > > Compared to other cross toolchains I use, the output of the > previous two commands > > miss the full path to the linker. The gold linker is part of my SDK: > > > >> arm-poky-linux-musleabi-ld.gold --help > > Usage: arm-poky-linux-musleabi-ld.gold [options] file... > > Options: > > --help Report usage information > > ... > > > > How can I use the gold linker from gcc (without making it default)? > > > > This is kind of known and kind of works as intended, see > https://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gcc/gcc-cross-canadian.inc#n132 > <https://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gcc/gcc-cross-canadian.inc#n132> > > You might want to try commenting it out and see if it works for you in > resulting SDK > > regards > > Christian > > > > > > > > ________________________________ > > > [http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg <http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg>] <https://microsites.arri.com/stellar/ <https://microsites.arri.com/stellar/>> > > > > Get all the latest information from www.arri.com > <http://www.arri.com><https://www.arri.com/ > <https://www.arri.com/>>, Facebook<https://www.facebook.com/TeamARRI > <https://www.facebook.com/TeamARRI>>, > Twitter<https://twitter.com/ARRIChannel > <https://twitter.com/ARRIChannel>>, > Instagram<https://instagram.com/arri <https://instagram.com/arri>> > and YouTube<https://www.youtube.com/user/ARRIChannel > <https://www.youtube.com/user/ARRIChannel>>. > > > > Arnold & Richter Cine Technik GmbH & Co. Betriebs KG > > Sitz: München - Registergericht: Amtsgericht München - > Handelsregisternummer: HRA 57918 > > Persönlich haftender Gesellschafter: Arnold & Richter Cine > Technik GmbH > > Sitz: München - Registergericht: Amtsgericht München - > Handelsregisternummer: HRB 54477 > > Geschäftsführer: Dr. Michael Neuhäuser; Stephan Schenk; Walter > Trauninger; Markus Zeiler > > > > > > > > > > > > > > > > -- > Christopher Larson > kergoth at gmail dot com > Founder - BitBake, OpenEmbedded, OpenZaurus > Senior Software Engineer, Mentor Graphics ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [OE-core] [SDK] How to use the gold linker 2020-12-15 17:15 ` Khem Raj @ 2020-12-18 11:30 ` Christian Eggers 2020-12-18 16:32 ` Khem Raj 0 siblings, 1 reply; 5+ messages in thread From: Christian Eggers @ 2020-12-18 11:30 UTC (permalink / raw) To: openembedded-core; +Cc: Khem Raj, Christopher Larson Hi Khem, hi Christopher, On Tuesday, 15 December 2020, 18:15:52 CET, Khem Raj wrote: > > On 12/15/20 8:50 AM, Christopher Larson wrote: > > This can be fixed via two changes, first removing real-ld, then adding > > the missing links to fix -fuse-ld=. I have this in one of my > > not-yet-submitted bbappends: > > > > # Remove real-ld, as it prevents checking for ld or gold in the > > search path > > rm -f ${dest}real-ld$suffix > > # Then add links to fix builds with -fuse-ld= > > ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.gold$suffix > > ${dest}ld.gold$suffix > > ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.bfd$suffix ${dest}ld.bfd$suffix > > > > right this looks ok. Can you submit this for upstreaming please while this change works "fine for me" (I can now use ld.gold which is about 3 times faster for my project), there are side effects: > ${CC} -fuse-ld=bfd -print-prog-name=ld /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld.bfd > ${CC} -fuse-ld=bfd -o test test.c works fine > ${CC} -fuse-ld=gold -print-prog-name=ld /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld.gold > ${CC} -fuse-ld=gold -o test test.c also works fine > ${CC} print-prog-name=ld /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > ${CC} -o test test.c collect2: fatal error: cannot find ‘ld’ compilation terminated. > ls -l /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld -> ../../../../../bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-ld regards Christian ________________________________ [http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg] <https://microsites.arri.com/stellar/> Get all the latest information from www.arri.com<https://www.arri.com/>, Facebook<https://www.facebook.com/TeamARRI>, Twitter<https://twitter.com/ARRIChannel>, Instagram<https://instagram.com/arri> and YouTube<https://www.youtube.com/user/ARRIChannel>. Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRA 57918 Persönlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRB 54477 Geschäftsführer: Dr. Michael Neuhäuser; Stephan Schenk; Walter Trauninger; Markus Zeiler ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [OE-core] [SDK] How to use the gold linker 2020-12-18 11:30 ` Christian Eggers @ 2020-12-18 16:32 ` Khem Raj 0 siblings, 0 replies; 5+ messages in thread From: Khem Raj @ 2020-12-18 16:32 UTC (permalink / raw) To: Christian Eggers, openembedded-core; +Cc: Christopher Larson On 12/18/20 3:30 AM, Christian Eggers wrote: > Hi Khem, hi Christopher, > > On Tuesday, 15 December 2020, 18:15:52 CET, Khem Raj wrote: >> >> On 12/15/20 8:50 AM, Christopher Larson wrote: >>> This can be fixed via two changes, first removing real-ld, then adding >>> the missing links to fix -fuse-ld=. I have this in one of my >>> not-yet-submitted bbappends: >>> >>> # Remove real-ld, as it prevents checking for ld or gold in the >>> search path >>> rm -f ${dest}real-ld$suffix >>> # Then add links to fix builds with -fuse-ld= >>> ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.gold$suffix >>> ${dest}ld.gold$suffix >>> ln -sf ${BINRELPATH}/${TARGET_PREFIX}ld.bfd$suffix ${dest}ld.bfd$suffix >>> >> >> right this looks ok. Can you submit this for upstreaming please > > while this change works "fine for me" (I can now use ld.gold which is about > 3 times faster for my project), there are side effects: > >> ${CC} -fuse-ld=bfd -print-prog-name=ld > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld.bfd > >> ${CC} -fuse-ld=bfd -o test test.c > works fine > >> ${CC} -fuse-ld=gold -print-prog-name=ld > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld.gold > >> ${CC} -fuse-ld=gold -o test test.c > also works fine > >> ${CC} print-prog-name=ld > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > >> ${CC} -o test test.c > collect2: fatal error: cannot find ‘ld’ > compilation terminated. > >> ls -l /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld > /opt/poky-tiny/3.1.4/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.3.0/ld -> ../../../../../bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-ld > we could patch it out in gcc sources so always use the real one because the default is one of gold or bfd linker anyway > > > regards > Christian > > > > > ________________________________ > [http://assets.arri.com/media/sign/2020-04-03-E-mail-signature-Stellar2_V1.jpg] <https://microsites.arri.com/stellar/> > > Get all the latest information from www.arri.com<https://www.arri.com/>, Facebook<https://www.facebook.com/TeamARRI>, Twitter<https://twitter.com/ARRIChannel>, Instagram<https://instagram.com/arri> and YouTube<https://www.youtube.com/user/ARRIChannel>. > > Arnold & Richter Cine Technik GmbH & Co. Betriebs KG > Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRA 57918 > Persönlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH > Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRB 54477 > Geschäftsführer: Dr. Michael Neuhäuser; Stephan Schenk; Walter Trauninger; Markus Zeiler > ^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-12-14 11:14 [SDK] How to use the gold linker Christian Eggers
2020-12-14 22:09 ` [OE-core] " Khem Raj
[not found] ` <CABcZAN=QdWzV=LObrdHMWfcDx_1VV3Ce-i_nYL3H7WYUcCtSSA@mail.gmail.com>
2020-12-15 17:15 ` Khem Raj
2020-12-18 11:30 ` Christian Eggers
2020-12-18 16:32 ` Khem Raj
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