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; * etc/DEBUG: Say that debugging code compiled w/ -Og can be hard.

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Sean Whitton 2025-04-24 20:14:36 +08:00
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etc/DEBUG
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@ -19,11 +19,11 @@ such as --prefix):
./configure --enable-checking='yes,glyphs' --enable-check-lisp-object-type \
CFLAGS='-O0 -g3'
The -O0 flag is important, as debugging optimized code can be hard.
If the problem happens only with optimized code, you may need to
enable optimizations. If that happens, try using -Og first instead of
-O2, as -Og disables some optimizations that make debugging some code
exceptionally hard.
The -O0 flag is important, as debugging optimized code can be hard, even
in the case that the -Og compiler option is used. If the problem
happens only with optimized code, you may need to enable optimizations.
If that happens, try using -Og first instead of -O2, as -Og disables
some optimizations that make debugging some code exceptionally hard.
Older versions of GCC may need more than just the -g3 flag. For more,
search for "analyze failed assertions" below.