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"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@xxxxxxxxxxxxxxxxxxxxxxxTo unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxFedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelinesDo not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure--Sérgio M. B.
_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
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@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
_______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx 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@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
