Diff below adds the relevant arm-specific code to the build. It leaves out the VFP bits. Those don't compile with our current toolchain (gcc/binutils) and I believe they're only necessary for the hard-float ABI anyway.
ok? Index: Makefile =================================================================== RCS file: /cvs/src/lib/libcompiler_rt/Makefile,v retrieving revision 1.1 diff -u -p -r1.1 Makefile --- Makefile 5 Sep 2016 11:38:16 -0000 1.1 +++ Makefile 19 Sep 2016 08:28:57 -0000 @@ -164,6 +164,53 @@ SRCS+= ${file}.c . endif .endfor +.if ${RTARCH} == "arm" +SRCS+= aeabi_cdcmp.S \ + aeabi_cdcmpeq_check_nan.c \ + aeabi_cfcmp.S \ + aeabi_cfcmpeq_check_nan.c \ + aeabi_dcmp.S \ + aeabi_div0.c \ + aeabi_drsub.c \ + aeabi_fcmp.S \ + aeabi_frsub.c \ + aeabi_idivmod.S \ + aeabi_ldivmod.S \ + aeabi_memcmp.S \ + aeabi_memcpy.S \ + aeabi_memmove.S \ + aeabi_memset.S \ + aeabi_uidivmod.S \ + aeabi_uldivmod.S \ + bswapdi2.S \ + bswapsi2.S \ + switch16.S \ + switch32.S \ + switch8.S \ + switchu8.S \ + sync_fetch_and_add_4.S \ + sync_fetch_and_add_8.S \ + sync_fetch_and_and_4.S \ + sync_fetch_and_and_8.S \ + sync_fetch_and_max_4.S \ + sync_fetch_and_max_8.S \ + sync_fetch_and_min_4.S \ + sync_fetch_and_min_8.S \ + sync_fetch_and_nand_4.S \ + sync_fetch_and_nand_8.S \ + sync_fetch_and_or_4.S \ + sync_fetch_and_or_8.S \ + sync_fetch_and_sub_4.S \ + sync_fetch_and_sub_8.S \ + sync_fetch_and_umax_4.S \ + sync_fetch_and_umax_8.S \ + sync_fetch_and_umin_4.S \ + sync_fetch_and_umin_8.S \ + sync_fetch_and_xor_4.S \ + sync_fetch_and_xor_8.S \ + sync_synchronize.S +.endif + .if ${RTARCH} == "ppc" SRCS+= divtc3.c \ fixtfdi.c \