in debug mode with O0 building gc fails on 32 bit fedora

[jakobkroeker]

ops_stack.Tpo -c -o atomic_ops_stack.o atomic_ops_stack.c
In file included from atomic_ops.h:212:0,
                 from atomic_ops_stack.h:32,
                 from atomic_ops_stack.c:23:
atomic_ops/sysdeps/gcc/x86.h: In Funktion »AO_compare_double_and_swap_double_full«:
atomic_ops/sysdeps/gcc/x86.h:149:5: Fehler: in der Klasse »GENERAL_REGS« konnte während des Neuladens von »asm« kein Register gefunden werden
atomic_ops/sysdeps/gcc/x86.h:149:5: Fehler: »asm«-Operand hat unmögliche Nebenbedingungen

workaround:
compile gc with -fomit-frame-pointer