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Use full soname for libgcc_s in CPUProgram (#8642)

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Number after .so is abi version, it is always 1 for libgcc_s.
Most linux systems set default library versions via symlinks that are
simply followed to get actual elf, however conda does it via linker
scripts which ctypes doesn't follow (below contents of libgcc_s.so):
```
/* GNU ld script
   Use the shared library, but some functions are only in
   the static library.  */
GROUP ( libgcc_s.so.1 -lgcc )
```
ctypes.util.find_library thinks that this is the actual elf and
ctypes.CDLL just loads this text file as a shared library. The result
is:
```
  File "/home/me/src/tinygrad/tinygrad/device.py", line 223, in CPUProgram
    helper_handle = ctypes.CDLL(ctypes.util.find_library('System' if OSX else 'gcc_s'))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/miniforge3/envs/tinygrad/lib/python3.12/ctypes/__init__.py", line 379, in __init__
    self._handle = _dlopen(self._name, mode)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: /home/me/miniforge3/envs/tinygrad/lib/libgcc_s.so: invalid ELF header
```
This commit is contained in:
uuuvn
2025-01-16 11:56:52 +02:00
committed by GitHub
parent 611208cd8a
commit 00e5979897
1 changed files with 1 additions and 1 deletions
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2
tinygrad/device.py
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@@ -220,7 +220,7 @@ MAP_JIT = 0x0800
# CPUProgram is a jit/shellcode program that can be just mmapped and jumped to
class CPUProgram:
helper_handle = ctypes.CDLL(ctypes.util.find_library('System' if OSX else 'gcc_s'))
helper_handle = ctypes.CDLL(ctypes.util.find_library('System') if OSX else 'libgcc_s.so.1')
def __init__(self, name:str, lib:bytes):
# On apple silicon with SPRR enabled (it always is in macos) RWX pages are unrepresentable: https://blog.svenpeter.dev/posts/m1_sprr_gxf/