090d3f5ab3
Use `-fasynchronous-unwind-tables' rather than `-fexceptions -fnon-call-exceptions' in LIB2_DIVMOD_FUNCS compilation flags so as to provide unwind tables for the affected functions while not pulling the unwinder proper, which is not required here. Beyond saving program space it fixes a RISC-V glibc build error due to unsatisfied `malloc' and `free' references from the unwinder causing link errors with `ld.so' where libgcc has been built at -O0. libgcc/ * config/riscv/t-elf (LIB2_DIVMOD_EXCEPTION_FLAGS): New variable.
9 lines
334 B
Plaintext
9 lines
334 B
Plaintext
LIB2ADD += $(srcdir)/config/riscv/save-restore.S \
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$(srcdir)/config/riscv/muldi3.S \
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$(srcdir)/config/riscv/multi3.c \
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$(srcdir)/config/riscv/div.S \
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$(srcdir)/config/riscv/atomic.c \
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# Avoid the full unwinder being pulled along with the division libcalls.
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LIB2_DIVMOD_EXCEPTION_FLAGS := -fasynchronous-unwind-tables
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