Re: Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
That was it! I somehow missed that change to the macros and undermining _auto_set_build_flags fixed it. Thanks! On 29 Mar 2022, at 4:38, Sérgio Basto wrote: On Mon, 2022-03-28 at 16:43 -0500, Ron Olson wrote: Hey all- I’m unable to build Swift on Fedora 36 and Rawhide while it does build on F35. I’ve been able to condense the entire issue down to the following sample code that demonstrates the problem: nothing.S: #define ASM_TYPE_FUNCTION(symbol) .type symbol, %function #define ASM_SIZE(symbol) .size symbol, .-symbol #define ASM_SYMBOL(symbol) symbol #define ASM_WRAPPER_NAME(symbol) _interceptor##symbol .comm _ZN14__interception10real_vforkE,8,8 .globl ASM_WRAPPER_NAME(vfork) ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork)) ASM_WRAPPER_NAME(vfork): // Commenting out the line below makes it work call *_ZN14__interception10real_vforkE(%rip) ASM_SIZE(vfork) And compiling this code with: clang++ -fPIC -shared ./nothing.S Results in the error: /usr/bin/ld: /tmp/fun-1b3a0d.o: warning: relocation against _ZN14__interception10real_vforkE' in read-only section .text' /usr/bin/ld: /tmp/fun-1b3a0d.o: relocation R_X86_64_PC32 against symbol `_ZN14__interception10real_vforkE' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: bad value https://bugzilla.redhat.com/show_bug.cgi?id=1304277#c3 "relocation R_X86_64_PC32 against undefined symbol" happens when LDFLAGS are set with hardening and CFLAGS not . maybe is an effect of https://fedoraproject.org/wiki/Changes/SetBuildFlagsBuildCheck have you tried %undefine _auto_set_build_flags ? The issue is that I’m explicitly passing -fPIC but it seems to either be ignored or overridden somehow. I’m not well versed on assembly to make any kind of educated guess about what might be the problem/solution so I’m hoping someone more familiar might be able to shed some light on the issue. Thanks! Ron ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure -- Sérgio M. B. ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
Re: Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
On Mon, 2022-03-28 at 16:43 -0500, Ron Olson wrote: > Hey all- > I’m unable to build Swift on Fedora 36 and Rawhide while it does > build on F35. I’ve been able to condense the entire issue down to the > following sample code that demonstrates the problem: > nothing.S: > #define ASM_TYPE_FUNCTION(symbol) .type symbol, %function > #define ASM_SIZE(symbol) .size symbol, .-symbol > #define ASM_SYMBOL(symbol) symbol > #define ASM_WRAPPER_NAME(symbol) _interceptor##symbol > .comm _ZN14__interception10real_vforkE,8,8 > .globl ASM_WRAPPER_NAME(vfork) > ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork)) > ASM_WRAPPER_NAME(vfork): > // Commenting out the line below makes it work > call *_ZN14__interception10real_vforkE(%rip) > ASM_SIZE(vfork) > And compiling this code with: > clang++ -fPIC -shared ./nothing.S > Results in the error: > /usr/bin/ld: /tmp/fun-1b3a0d.o: warning: relocation against > _ZN14__interception10real_vforkE' in read-only section .text' > /usr/bin/ld: /tmp/fun-1b3a0d.o: relocation R_X86_64_PC32 against > symbol `_ZN14__interception10real_vforkE' can not be used when making > a shared object; recompile with -fPIC > /usr/bin/ld: final link failed: bad value https://bugzilla.redhat.com/show_bug.cgi?id=1304277#c3 "relocation R_X86_64_PC32 against undefined symbol" happens when LDFLAGS are set with hardening and CFLAGS not . maybe is an effect of https://fedoraproject.org/wiki/Changes/SetBuildFlagsBuildCheck have you tried %undefine _auto_set_build_flags ? > The issue is that I’m explicitly passing -fPIC but it seems to either > be ignored or overridden somehow. I’m not well versed on assembly to > make any kind of educated guess about what might be the > problem/solution so I’m hoping someone more familiar might be able to > shed some light on the issue. > Thanks! > Ron > ___ > devel mailing list -- devel@lists.fedoraproject.org > To unsubscribe send an email to devel-le...@lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: > https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org > Do not reply to spam on the list, report it: > https://pagure.io/fedora-infrastructure -- Sérgio M. B. ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
Re: Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
On Mon, Mar 28, 2022 at 3:44 PM Ron Olson wrote: > I’m unable to build Swift on Fedora 36 and Rawhide while it does build on > F35. I’ve been able to condense the entire issue down to the following sample > code that demonstrates the problem: This looks like https://stackoverflow.com/questions/48369771/relocation-r-x86-64-pc32-against-symbol-when-calling-function-from-inline-assemb. -- Jerry James http://www.jamezone.org/ ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
Re: Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
On 3/28/22 17:43, Ron Olson wrote: > Hey all- > > I’m unable to build Swift on Fedora 36 and Rawhide while it does build > on F35. I’ve been able to condense the entire issue down to the > following sample code that demonstrates the problem: Does using lld or gold help? -- Sincerely, Demi Marie Obenour (she/her/hers) OpenPGP_0xB288B55FFF9C22C1.asc Description: OpenPGP public key OpenPGP_signature Description: OpenPGP digital signature ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
Re: Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
FWIW, I get the same result if using GCC. On 28 Mar 2022, at 16:43, Ron Olson wrote: Hey all- I’m unable to build Swift on Fedora 36 and Rawhide while it does build on F35. I’ve been able to condense the entire issue down to the following sample code that demonstrates the problem: nothing.S: #define ASM_TYPE_FUNCTION(symbol) .type symbol, %function #define ASM_SIZE(symbol) .size symbol, .-symbol #define ASM_SYMBOL(symbol) symbol #define ASM_WRAPPER_NAME(symbol) __interceptor_##symbol .comm _ZN14__interception10real_vforkE,8,8 .globl ASM_WRAPPER_NAME(vfork) ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork)) ASM_WRAPPER_NAME(vfork): // Commenting out the line below makes it work call*_ZN14__interception10real_vforkE(%rip) ASM_SIZE(vfork) And compiling this code with: clang++ -fPIC -shared ./nothing.S Results in the error: /usr/bin/ld: /tmp/fun-1b3a0d.o: warning: relocation against `_ZN14__interception10real_vforkE' in read-only section `.text' /usr/bin/ld: /tmp/fun-1b3a0d.o: relocation R_X86_64_PC32 against symbol `_ZN14__interception10real_vforkE' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: bad value The issue is that I’m explicitly passing -fPIC but it seems to either be ignored or overridden somehow. I’m not well versed on assembly to make any kind of educated guess about what might be the problem/solution so I’m hoping someone more familiar might be able to shed some light on the issue. Thanks! Ron___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
Troubleshooting building Swift on Fedora, take 2; assembly language is not my friend
Hey all- I’m unable to build Swift on Fedora 36 and Rawhide while it does build on F35. I’ve been able to condense the entire issue down to the following sample code that demonstrates the problem: nothing.S: #define ASM_TYPE_FUNCTION(symbol) .type symbol, %function #define ASM_SIZE(symbol) .size symbol, .-symbol #define ASM_SYMBOL(symbol) symbol #define ASM_WRAPPER_NAME(symbol) __interceptor_##symbol .comm _ZN14__interception10real_vforkE,8,8 .globl ASM_WRAPPER_NAME(vfork) ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork)) ASM_WRAPPER_NAME(vfork): // Commenting out the line below makes it work call*_ZN14__interception10real_vforkE(%rip) ASM_SIZE(vfork) And compiling this code with: clang++ -fPIC -shared ./nothing.S Results in the error: /usr/bin/ld: /tmp/fun-1b3a0d.o: warning: relocation against `_ZN14__interception10real_vforkE' in read-only section `.text' /usr/bin/ld: /tmp/fun-1b3a0d.o: relocation R_X86_64_PC32 against symbol `_ZN14__interception10real_vforkE' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: bad value The issue is that I’m explicitly passing -fPIC but it seems to either be ignored or overridden somehow. I’m not well versed on assembly to make any kind of educated guess about what might be the problem/solution so I’m hoping someone more familiar might be able to shed some light on the issue. Thanks! Ron___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
