Build failures for MacOS

This ticket is a collection of the following archs that fail to build:

• bfin
• lm32
• mips
• or1k
• powerpc
• v850

bfin

../../../sourceware-mirror-binutils-gdb-7ab567f/sim/bfin/dv-bfin_dma.c:124:35: error: implicitly declaring library function 'abs' with type 'int (int)' [-Werror,-Wimplicit-function-declaration]
  if (dma->ele_size != (unsigned) abs (dma->x_modify))

lm32

../../../sourceware-mirror-binutils-gdb-7ab567f/sim/lm32/dv-lm32cpu.c:151:8: error: implicit declaration of function 'lm32bf_h_csr_get' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  im = lm32bf_h_csr_get (cpu, LM32_CSR_IM);

mip

../../../sourceware-mirror-binutils-gdb-7ab567f/sim/mips/cp1.c:495:7: error: implicitly declaring library function 'abort' with type 'void (void) __attribute

or1k

../../../sourceware-mirror-binutils-gdb-7ab567f/sim/or1k/../common/cgen-trace.c:213:6: error: implicitly declaring library function 'abort' with type 'void (void) __attribute__((noreturn))' [-Werror,-Wimplicit-function-declaration]
            abort ();

powerpc

semantics.c:42:7: error: implicit declaration of function 'tree_find_property' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  if (tree_find_property(root, "/options/mpc860c0"))

v850

../../../sourceware-mirror-binutils-gdb-7ab567f/sim/v850/simops.c:1651:6: error: implicit declaration of function 'free' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
            free (path);