On 3/1/23 04:35, Khem Raj via Gcc-patches wrote:
Currently, if the gcc toolchain is relocated and installed from shared state
cache, then you try and compile
preprocessed source (.i or .ii files), the compiler will try and access the
builtin sysroot location
rather than the --sysroot option specified on the commandline. If access to
that directory is
permission denied (unreadable), gcc will error.
This happens when ccache is in use due to the fact it uses preprocessed source
files.
The fix below adds %I to the cpp-output spec macro so the default substitutions
for -iprefix,
-isystem, -isysroot happen and the correct sysroot is used.
Given this doesn't appear to fix a regression and is pretty narrow in
terms of affected users, I'm going to defer to gcc-14.
I think this is probably OK once development re-opens.
jeff
