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elf: Minimize library dependencies of tst-nolink-libc.c 

On 32-bit Arm, -fasynchronous-unwind-tables creates a reference
to the symbol __aeabi_unwind_cpp_pr0.  Compile the tests without
this flag even if it is passed as part of CC, to avoid linker
failures.
This commit is contained in:
Florian Weimer 2025-01-08 16:55:31 +01:00
parent a4c414796a
commit 39183f47d8
1 changed files with 4 additions and 2 deletions
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6
elf/Makefile
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@ -3377,8 +3377,10 @@ endif
# a port adds them to the tests variables. Neither test variant is
# linked against libc.so, but tst-nolink-libc-1 is linked against
# ld.so. The test is always run directly, not under the dynamic
# linker.
CFLAGS-tst-nolink-libc.c += $(no-stack-protector)
# linker. It is necessary to minimize run-time dependencies, by
# disabling stack protection and unwinding.
CFLAGS-tst-nolink-libc.c += $(no-stack-protector) \
-fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables
$(objpfx)tst-nolink-libc-1: $(objpfx)tst-nolink-libc.o $(objpfx)ld.so
$(LINK.o) -nostdlib -nostartfiles -o $@ $< \
-Wl,--dynamic-linker=$(objpfx)ld.so,--no-as-needed $(objpfx)ld.so