Currently the lto plugin has a somewhat obscure incantation to get it to save its temp files, and at least one is not named in any sensible way for development examination.
This patch makes it follow the same approach as collect2.
-save-temps causes the temp file to be named meaningfully, and for the relevant
input files to be saved in CWD.
-v, —version causes the save actions to be output to stderr.
——
one can get this to happen by just putting -save-temps, -v on the regular link
line or (for compatibility with the way the -debug flag works, by appending
-plugin-opt=-save-temps, etc.
(the latter change might be a bit OTT, I was in two minds about deleting that
part, but …)
tested on x86_64-linux-gnu.
OK for trunk?
Iain
lto-plugin/
* lto-plugin.c (exec_lto_wrapper): Make the wrapper
arguments filename more user-friendly.
(file_exists, maybe_unlink): New.
(cleanup_handler): Use maybe unlink to handle the
case when temps should be saved.
(process_option): Look for -v, —version, -save-temps.
(onload): Record the linker output file name.
Check for -v, —version, -save-temps in GCC collect
options environment.
lto-plugin-save-temps.diff
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