<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/148154>148154</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            running clang via `ld-linux-x86-64.so.2 clang test.c` is't work
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          leleliu008
      </td>
    </tr>
</table>

<pre>
    run clang as `/home/leleliu008/Downloads/glibc/lib/ld-linux-x86-64.so.2 ./clang -v -c test.c`

I got following:

```
clang version 18.1.8
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/leleliu008/Downloads/llvm+clang-18.1.8-linux-glibc-x86_64.release.old/bin/.
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/13
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/13
Candidate multilib: .;@m64
Selected multilib: .;@m64
 (in-process)
 "/home/leleliu008/Downloads/glibc/lib/ld-linux-x86-64.so.2" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name test.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/leleliu008/Downloads/llvm+clang-18.1.8-linux-glibc-x86_64.release.old/bin -v -fcoverage-compilation-dir=/home/leleliu008/Downloads/llvm+clang-18.1.8-linux-glibc-x86_64.release.old/bin -resource-dir /home/leleliu008/Downloads/llvm+clang+lld-18.1.8-linux-glibc-x86_64.release/lib/clang/18 -internal-isystem /home/leleliu008/Downloads/llvm+clang+lld-18.1.8-linux-glibc-x86_64.release/lib/clang/18/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o test.o -x c test.c
clang -cc1 version 18.1.8 based upon LLVM 18.1.8 default target x86_64-unknown-linux-gnu
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/leleliu008/Downloads/llvm+clang+lld-18.1.8-linux-glibc-x86_64.release/lib/clang/18/include
 /usr/local/include
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
```

As you can see, `cc1` is invoked via `/home/leleliu008/Downloads/glibc/lib/ld-linux-x86-64.so.2" -cc1`

I guess clang use `/proc/self/exe` to determine self path on GNU/Linux.

Why I use this way to run clang?

Becase this is the most portable way to run dynamically linked executables on all GNU/Linux.
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzEV0tv2zwW_TX05uIKEmU7ysILx646BfrNYjrTLgOavJLZUKRAUo797weUlEenSR-Yth9gyDZ1eM8heV8UIejWEm3Y6oat9gsxxKPzG0OGjB7yvFocnLps_GBBGmFbEAHYOme8PrqOGK-fkIzXe3dvjRMqMF63Rh9kAuhDeio02g5nPFdrXC-z4DIOGeP1ZBVPgBIihZjJZD7fsnz7DloXoXHGuHttW1Zup_EEmD75dpp-Ih-0s1BUWZFVLN_-W_iWIiu3cK7Wt-slDvbOuns7i2jtkEBHT0JB5xSZBO1d0OfEa0MUxpDaa5_Gf2Cxxpw6xm9GNTipeKBK24CTisyTIREoc0YxXh-0ZbzOWL6t3WAVSGGVViISvN3tQE8qRNTOziqG4B83tJVpc-fVPa2K10XJ8u0HMiQjqf_f0u5RVDeYqNOUcgsZK2_YMu_Wy-dkryKA8Upb7L2TFALj19MY_yVuxDgHlLIAjF73hl49ckDqdER3-AzYeTLijMIYQKWDOBjCxhMBSkPCowgRD9Q4T3gQ8o6sesKlw8YTed1o8uOwFF7hSZiB0IqOAmAntMVGm2lg9uyJ1snxJHD0O-i1BOy1REMnMsCnPzpgrwmwa7zoCHunbSTPyv0ouOlEPCJ5bx1g0_QonY1eyMjKvbOAjXXok0tp22LCAnbS2RD9IKPzKIwWIalsBnuvrcKY1hVYueeAcQwdlP0A0yYDxsHSONCSJZ8EKzoMbUs-vRpDc9-qA2AzjqN0Xa8nf0OVYmj_G0NozB2NdCfyoqU_ze0puMFLSlw_mygYvzFGfZ_v0fvnWXVRAY4OYYVBHS4hUvcHyRmvtZVmUPSyjDm5OCnMD0K_m4d4nWVfP17Afs1G5_RDfs06Q1-w8-3ZP08B2JD3zqPRnY5QXAM2rR0kznWLlftlxrMCsAl3ukenPMojyTvUFtuuGf3bOI9Ki9a6ELVMwSuU8kG3gPvb27e73e0_th_f3O4_bf9V89td_e52--EvVu4LQDflHwd4hscq-1A7x9T5ZQGFgwikYOidhffvP_71MKyoEYOJMKWIb5VW3VrntW3BOktnHSLZCEp7SvnnMqf-33X4yfoPSvhiBuPlw4ExzrPEwiGQ8PIIIQofAxzJ09yHPAOXuwQu37wK_luCc-Z9MRq_ePd6ILwIy7dvrALXPKzW6BCz_2nLWL7dBri4ITU1EIgY36W-UcqCrXPQAbQ9uTtScNLilzWUD53A8w5yoBDm1nUINFOlRoTxOpBpGK_pTElUdKAoku-0JUivoE-l01l4-8__MF6_T3TZZPjT8QLvRoPxqAPci0ua_tgls7KecDckxQNIB4hHgs6FCL3zY819PlNdrOi0FMZcwGibNofOJIepOCcdqfg_17JQm1Jdl9diQZviasU5L6uqWhw3y6pommJVVDJfF0W5UkqIlVKS1oILXq4WesNzvsqviiKvVgWvMs7zqirzq4rn4upQSLbMqRPaZMktM-fbhQ5hoE2xrIrVcmHEgUwYLw2cz87H0_3Bb8bu6DC0gS3z5BrhyUTU0VC6S6SeYT6U-fxfvB9MiMdbAejA-FWEe-fvFoM3m2OMfUgRxuvkHzoeh0MmXfcYTeNXajs_k4zJhdMaki_Nyzht-H8DAAD__0YLOPI">