libobjc2 failure on ubuntu24 on arm

[Andreas Fink]

Hello all

I try to build a gnustep app under Ubuntu24 on arm.
compiling and installing gnustep worked as normal but when I try to run my own 
code I get failures during ./configure phase

checking whether we are cross compiling... configure: error: in 
`/Users/afink/development/gitlab/ulibsctp':
configure: error: cannot run C compiled programs.

so I analyzed what it does there and it runs a simple test case I can reproduce

test.c:

int main(int argc,char **argv)
{
        return 0;
}


# /usr/bin/clang -o conftest  -std=c99 -fPIC -DLINUX -D_XOPEN_SOURCE=700 
-D_POSIX_SOURCE -D_DEFAULT_SOURCE -DSCTP_IN_KERNEL=1 -Wno-trigraphs  
-Wno-missing-field-initializers -Wmissing-prototypes 
-Wno-implicit-atomic-properties -Wno-arc-repeated-use-of-weak 
-Wduplicate-method-match -Wno-missing-braces -Wparentheses -Wswitch 
-Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable 
-Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow 
-Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion 
-Wbool-conversion -Wenum-conversion -Wpointer-sign -Wno-newline-eof 
-Wno-selector -Wno-strict-selector-match -Wundeclared-selector 
-Wno-deprecated-implementations -Wprotocol -Wdeprecated-declarations 
-Wno-sign-conversion  -fobjc-arc -I/usr/GNUstep/System/Library/Headers/ -MMD 
-MP -DGNUSTEP -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNUSTEP_RUNTIME=1 
-D_NONFRAGILE_ABI=1 -DGNUSTEP_BASE_LIBRARY=1 -fno-strict-aliasing -fexceptions 
-fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS -pthread -fPIC -Wall -DGSWARN 
-DGSDIAGNOSE -Wno-import -I /usr/include -fblocks -fobjc-runtime=gnustep-2.0 
-fblocks -fconstant-string-class=NSConstantString -I. 
-I/root/GNUstep/Library/Headers -I/usr/GNUstep/Local/Library/Headers 
-I/usr/GNUstep/System/Library/Headers -I/usr/local/include 
-I/usr/GNUstep/System/Library/Headers/ -DHAVE_OPENSSL=1   -fuse-ld=gold 
-fuse-ld=gold -pthread -fexceptions -rdynamic -fobjc-runtime=gnustep-2.0 
-fblocks -L/root/GNUstep/Library/Libraries 
-L/usr/GNUstep/Local/Library/Libraries -L/usr/GNUstep/System/Library/Libraries 
-lgnustep-base -lpthread -l:libobjc.so.4.6 -lm -lobjc -lavahi-client 
-lavahi-core -lavahi-common -lgnustep-base -ldl -lsctp -lbsd -luuid -lssl 
-lcrypto  test.c
clang: warning: argument unused during compilation: '-fobjc-exceptions' 
[-Wunused-command-line-argument]

]# ./conftest
Segmentation fault (core dumped)


# lldb conftest
(lldb) target create "conftest"
Current executable set to '/Users/afink/development/gitlab/ulibsctp/conftest' 
(aarch64).
(lldb) run
Process 1686 launched: '/Users/afink/development/gitlab/ulibsctp/conftest' 
(aarch64)
Process 1686 stopped
* thread #1, name = 'conftest', stop reason = signal SIGSEGV: address not 
mapped to object (fault address: 0x0)
    frame #0: 0x0000fffff7f8f2d8 libobjc.so.4.6`selector_lookup(char const*, 
char const*) [inlined] 
tsl::rh::power_of_two_growth_policy<2ul>::bucket_for_hash(this=0x0000000000000000,
 hash=18399730721004063734) const at robin_growth_policy.h:115:19
(lldb)


Anyone having a clue whats going terriblly wrong here?