[Bug 2011487] [NEW] riscv64 libgccjit stopped working

[Sergio Durigan Junior]

Public bug reported:

Hi,

This bug is affecting Emacs, as can be seen here:

https://launchpad.net/ubuntu/+source/emacs/1:28.2+1-12ubuntu1/+build/25649207

I was able to track this down to a problem with libgccjit and
LIBRARY_PATH on riscv64.  Basically, compiling the example program from
https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html and running it
leads to:

$ gcc /tmp/1.c -lgccjit
$ ./a.out
ld: cannot find crtbeginS.o: No such file or directory
libgccjit.so: error: error invoking gcc driver
NULL result

If we explicitly specify LIBRARY_PATH, it works:

$ LIBRARY_PATH=/usr/lib/gcc/ ./a.out
hello world

** Affects: emacs (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gcc-12 (Ubuntu)
     Importance: High
         Status: New


** Tags: update-excuse

** Also affects: emacs (Ubuntu)
   Importance: Undecided
       Status: New

** Tags added: update-excuse

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https://bugs.launchpad.net/bugs/2011487

Title:
  riscv64 libgccjit stopped working

Status in emacs package in Ubuntu:
  New
Status in gcc-12 package in Ubuntu:
  New

Bug description:
  Hi,

  This bug is affecting Emacs, as can be seen here:

  https://launchpad.net/ubuntu/+source/emacs/1:28.2+1-12ubuntu1/+build/25649207

  I was able to track this down to a problem with libgccjit and
  LIBRARY_PATH on riscv64.  Basically, compiling the example program
  from https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html and
  running it leads to:

  $ gcc /tmp/1.c -lgccjit
  $ ./a.out
  ld: cannot find crtbeginS.o: No such file or directory
  libgccjit.so: error: error invoking gcc driver
  NULL result

  If we explicitly specify LIBRARY_PATH, it works:

  $ LIBRARY_PATH=/usr/lib/gcc/ ./a.out
  hello world

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