Use of LTO causes linker to fail due to multiple definitions of compiler RTS functions

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    • Type: Bug
    • Resolution: Unresolved
    • Priority: Urgent

      Extract the attached zip file to an empty directory.  Build it ...

      % tiarmclang @lc.txt
error: symbol "ldexp" redefined: first defined in
   ".\{CE08F262-89FB-4696-B4B8-3E7DDD12BA40}"; redefined in
   "C:\ti\compilers\ti-cgt-armllvm_4.0.4.LTS\lib\armv7r-ti-none-eabihf/c/libc.a
   <s_scalbn.c.obj>"
error: symbol "ldexpl" redefined: first defined in
   ".\{CE08F262-89FB-4696-B4B8-3E7DDD12BA40}"; redefined in
   "C:\ti\compilers\ti-cgt-armllvm_4.0.4.LTS\lib\armv7r-ti-none-eabihf/c/libc.a
   <s_scalbn.c.obj>"
"j721s2_linker_safertos.cmd", line 90: warning: no matching section
"j721s2_linker_safertos.cmd", line 136: warning: no matching section
<many more similar diagnostics skipped>
error: errors encountered during linking; "adc5_spu.elf" not built
tiarmclang: error: tiarmlnk command failed with exit code 1 (use -v to see invocation)

      The function ldexp is from the compiler RTS library. The diagnostic says it is defined in both the LTO temporary file and the compiler RTS library.

      Build with version 3.2.2.LTS and the build succeeds.  (Note the warning diagnostics are still issued.)

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            TI User
            Reporter:
            TI User
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              Created:
              Updated:

                Connection: Intermediate to External PROD System
                EXTSYNC-6076 - Use of LTO causes linker to fail du...
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