* static libgfortran linker warnings @ 2021-04-21 6:34 NightStrike 2021-04-21 8:59 ` Bernhard Reutner-Fischer 0 siblings, 1 reply; 7+ messages in thread From: NightStrike @ 2021-04-21 6:34 UTC (permalink / raw) To: fortran When linking with -static-libgfortran, I get warnings from ld of the form "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I can't find those -z options documented anywhere. Why is gfortran adding them? ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 6:34 static libgfortran linker warnings NightStrike @ 2021-04-21 8:59 ` Bernhard Reutner-Fischer 2021-04-21 9:29 ` NightStrike 0 siblings, 1 reply; 7+ messages in thread From: Bernhard Reutner-Fischer @ 2021-04-21 8:59 UTC (permalink / raw) To: NightStrike via Fortran On Wed, 21 Apr 2021 02:34:43 -0400 NightStrike via Fortran <fortran@gcc.gnu.org> wrote: > When linking with -static-libgfortran, I get warnings from ld of the form > "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I > can't find those -z options documented anywhere. Why is gfortran adding > them? -z are options to ld. Which linker do you use, on which OS? If you use binutils, you can pass -Wl,--verbose to the compiler to instruct the linker to dump the linker script while linking. This should show where the -z comes from: gfortran foo.f90 -static-libgfortran -Wl,--verbose ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 8:59 ` Bernhard Reutner-Fischer @ 2021-04-21 9:29 ` NightStrike 2021-04-21 10:06 ` Bernhard Reutner-Fischer 2021-04-21 10:16 ` Tobias Burnus 0 siblings, 2 replies; 7+ messages in thread From: NightStrike @ 2021-04-21 9:29 UTC (permalink / raw) To: Bernhard Reutner-Fischer; +Cc: NightStrike via Fortran On Wed, Apr 21, 2021 at 4:59 AM Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> wrote: > On Wed, 21 Apr 2021 02:34:43 -0400 > NightStrike via Fortran <fortran@gcc.gnu.org> wrote: > > > When linking with -static-libgfortran, I get warnings from ld of the form > > "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I > > can't find those -z options documented anywhere. Why is gfortran adding > > them? > > -z are options to ld. > Which linker do you use, on which OS? binutils 2.32 (stock build from source) on CentOS 7. > If you use binutils, you can pass -Wl,--verbose to the compiler to > instruct the linker to dump the linker script while linking. This should > show where the -z comes from: > gfortran foo.f90 -static-libgfortran -Wl,--verbose I didn't do this per se, but I did gfortran -v, and saw that it was an option to collect2. I can try your method when the system is available again tomorrow. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 9:29 ` NightStrike @ 2021-04-21 10:06 ` Bernhard Reutner-Fischer 2021-04-21 21:24 ` NightStrike 2021-04-21 10:16 ` Tobias Burnus 1 sibling, 1 reply; 7+ messages in thread From: Bernhard Reutner-Fischer @ 2021-04-21 10:06 UTC (permalink / raw) To: NightStrike; +Cc: rep.dot.nop, NightStrike via Fortran On Wed, 21 Apr 2021 05:29:28 -0400 NightStrike <nightstrike@gmail.com> wrote: > On Wed, Apr 21, 2021 at 4:59 AM Bernhard Reutner-Fischer > <rep.dot.nop@gmail.com> wrote: > > On Wed, 21 Apr 2021 02:34:43 -0400 > > NightStrike via Fortran <fortran@gcc.gnu.org> wrote: > > > > > When linking with -static-libgfortran, I get warnings from ld of the form > > > "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I > > > can't find those -z options documented anywhere. Why is gfortran adding > > > them? > > > > -z are options to ld. > > Which linker do you use, on which OS? > > binutils 2.32 (stock build from source) on CentOS 7. > > > If you use binutils, you can pass -Wl,--verbose to the compiler to > > instruct the linker to dump the linker script while linking. This should > > show where the -z comes from: > > gfortran foo.f90 -static-libgfortran -Wl,--verbose > > I didn't do this per se, but I did gfortran -v, and saw that it was an > option to collect2. I can try your method when the system is > available again tomorrow. gcc/configure.ac suggests that -z ignore / -z record is the native solaris ld parlance for --as-needed / --no-as-needed See "AC_CACHE_CHECK(linker --as-needed support". No idea why your gcc build thought that the ignore/record tuple is the correct thing to use for as-needed/no-as-needed. Maybe check your config.log around the '--as-needed support' checks for clues. I wouldn't suggest to hand edit your libgfortran.spec to use *lib: %{static-libgfortran:--as-needed} -lquadmath %{static-libgfortran:--no-as-needed} -lm %(libgcc) %(liborig) but i guess that would silence your linker warnings, too. HTH, ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 10:06 ` Bernhard Reutner-Fischer @ 2021-04-21 21:24 ` NightStrike 0 siblings, 0 replies; 7+ messages in thread From: NightStrike @ 2021-04-21 21:24 UTC (permalink / raw) To: Bernhard Reutner-Fischer; +Cc: NightStrike via Fortran On Wed, Apr 21, 2021 at 6:06 AM Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> wrote: > > On Wed, 21 Apr 2021 05:29:28 -0400 > NightStrike <nightstrike@gmail.com> wrote: > > > On Wed, Apr 21, 2021 at 4:59 AM Bernhard Reutner-Fischer > > <rep.dot.nop@gmail.com> wrote: > > > On Wed, 21 Apr 2021 02:34:43 -0400 > > > NightStrike via Fortran <fortran@gcc.gnu.org> wrote: > > > > > > > When linking with -static-libgfortran, I get warnings from ld of the form > > > > "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I > > > > can't find those -z options documented anywhere. Why is gfortran adding > > > > them? > > > > > > -z are options to ld. > > > Which linker do you use, on which OS? > > > > binutils 2.32 (stock build from source) on CentOS 7. > > > > > If you use binutils, you can pass -Wl,--verbose to the compiler to > > > instruct the linker to dump the linker script while linking. This should > > > show where the -z comes from: > > > gfortran foo.f90 -static-libgfortran -Wl,--verbose > > > > I didn't do this per se, but I did gfortran -v, and saw that it was an > > option to collect2. I can try your method when the system is > > available again tomorrow. > > gcc/configure.ac suggests that -z ignore / -z record is the native > solaris ld parlance for --as-needed / --no-as-needed > See "AC_CACHE_CHECK(linker --as-needed support". > > No idea why your gcc build thought that the ignore/record tuple is the > correct thing to use for as-needed/no-as-needed. Maybe check your > config.log around the '--as-needed support' checks for clues. > > I wouldn't suggest to hand edit your libgfortran.spec to use > *lib: %{static-libgfortran:--as-needed} -lquadmath %{static-libgfortran:--no-as-needed} -lm %(libgcc) %(liborig) > but i guess that would silence your linker warnings, too. > HTH, FWIW: ./ld: supported targets: elf64-x86-64 elf32-i386 elf32-iamcu elf32-x86-64 pei-i386 pei-x86-64 elf64-l1om elf64-k1om elf64-little elf64-big elf32-little elf32-big plugin srec symbolsrec verilog tekhex binary ihex ./ld: supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu elf_l1om elf_k1om ./ld: emulation specific options: ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 9:29 ` NightStrike 2021-04-21 10:06 ` Bernhard Reutner-Fischer @ 2021-04-21 10:16 ` Tobias Burnus 2021-04-21 21:34 ` NightStrike 1 sibling, 1 reply; 7+ messages in thread From: Tobias Burnus @ 2021-04-21 10:16 UTC (permalink / raw) To: NightStrike; +Cc: fortran, Bernhard Reutner-Fischer >> On Wed, 21 Apr 2021 02:34:43 -0400 >> NightStrike via Fortran <fortran@gcc.gnu.org> wrote: >>> When linking with -static-libgfortran, I get warnings from ld of the form >>> "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I >>> can't find those -z options documented anywhere. Why is gfortran adding >>> them? >> -z are options to ld. libgfortran/acinclude.m4 contains: dnl Check whether -Wl,--as-needed resp. -Wl,-zignore is supported That's where -z could come from. – Could you check what is in the installed file libgfortran.spec? On my Linux, it has: %{static-libgfortran:--as-needed} If you have a '-z ignore' there, it would be interesting to understand why – and what 'libgfortran/config.log' shows. >> Which linker do you use, on which OS? > binutils 2.32 (stock build from source) on CentOS 7. Here: Ubuntu with binutils 2.34. Tobias ----------------- Mentor Graphics (Deutschland) GmbH, Arnulfstrasse 201, 80634 München Registergericht München HRB 106955, Geschäftsführer: Thomas Heurung, Frank Thürauf ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: static libgfortran linker warnings 2021-04-21 10:16 ` Tobias Burnus @ 2021-04-21 21:34 ` NightStrike 0 siblings, 0 replies; 7+ messages in thread From: NightStrike @ 2021-04-21 21:34 UTC (permalink / raw) To: Tobias Burnus; +Cc: fortran, Bernhard Reutner-Fischer On Wed, Apr 21, 2021 at 6:17 AM Tobias Burnus <tobias@codesourcery.com> wrote: > > > >> On Wed, 21 Apr 2021 02:34:43 -0400 > >> NightStrike via Fortran <fortran@gcc.gnu.org> wrote: > >>> When linking with -static-libgfortran, I get warnings from ld of the form > >>> "ld: warning: -z ignore ignored" and "ld: warning: -z record ignored". I > >>> can't find those -z options documented anywhere. Why is gfortran adding > >>> them? > >> -z are options to ld. > > libgfortran/acinclude.m4 contains: > > dnl Check whether -Wl,--as-needed resp. -Wl,-zignore is supported > > That's where -z could come from. – Could you check what is in the > installed file libgfortran.spec? On my Linux, it has: > > %{static-libgfortran:--as-needed} > > If you have a '-z ignore' there, it would be interesting to understand > why – and what 'libgfortran/config.log' shows. > > >> Which linker do you use, on which OS? > > binutils 2.32 (stock build from source) on CentOS 7. > > Here: Ubuntu with binutils 2.34. %rename lib liborig *lib: %{static-libgfortran:-zignore} -lquadmath %{static-libgfortran:-zrecord} -lm %(libgcc) %(liborig) Clearly, I built it wrong. I just would like to know how I did so. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-04-21 21:35 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-04-21 6:34 static libgfortran linker warnings NightStrike 2021-04-21 8:59 ` Bernhard Reutner-Fischer 2021-04-21 9:29 ` NightStrike 2021-04-21 10:06 ` Bernhard Reutner-Fischer 2021-04-21 21:24 ` NightStrike 2021-04-21 10:16 ` Tobias Burnus 2021-04-21 21:34 ` NightStrike
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