[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a change in pull request #933: sim: Suppress "has no symbols" warnings for macOS

[GitBox <gi...@apache.org>]

xiaoxiang781216 commented on a change in pull request #933:
URL: https://github.com/apache/incubator-nuttx/pull/933#discussion_r418483568



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File path: binfmt/Makefile
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@@ -47,6 +47,7 @@ BINFMT_ASRCS  =
 BINFMT_CSRCS  = binfmt_globals.c binfmt_initialize.c binfmt_register.c binfmt_unregister.c
 BINFMT_CSRCS += binfmt_loadmodule.c binfmt_unloadmodule.c binfmt_execmodule.c
 BINFMT_CSRCS += binfmt_exec.c binfmt_copyargv.c binfmt_dumpmodule.c
+BINFMT_CSRCS += dummy.c

Review comment:
       We hit the similar issue with ceva toolchain before, and find a general solution:
   # cofflib -r will core dump if the library contain an object file
   # without any public symbol, so let's always generate a dummy global
   # function to overcome this issue.
   ARCHCPUFLAGS += -DCKSUM_SELF=$(if $<,$(word 1,$(shell cksum $<)))
   ARCHCPUFLAGS += -include dummy.h
   Here is two related files:
   https://github.com/FishsemiCode/nuttx/blob/song-u1/arch/ceva/src/tl4/Toolchain.defs
   https://github.com/FishsemiCode/nuttx/blob/song-u1/arch/ceva/src/tl4/dummy.h
   Without a general solution, we have to fix the same issue again and again.




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