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Diffstat (limited to 'debian/patches/gcc-lto-pick-compile-time-g-doc.diff')
| -rw-r--r-- | debian/patches/gcc-lto-pick-compile-time-g-doc.diff | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/debian/patches/gcc-lto-pick-compile-time-g-doc.diff b/debian/patches/gcc-lto-pick-compile-time-g-doc.diff new file mode 100644 index 0000000..08235e6 --- /dev/null +++ b/debian/patches/gcc-lto-pick-compile-time-g-doc.diff @@ -0,0 +1,29 @@ +# DP: Make LTO link pick up compile-time -g (documentation) + +https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00501.html + +2019-09-09 Richard Biener <rguenther@suse.de> + + * lto-opts.c (lto_write_options): Stream -g when debug is enabled. + * lto-wrapper.c (merge_and_complain): Pick up -g. + (append_compiler_options): Likewise. + (run_gcc): Re-instantiate handling -g0 at link-time. + * doc/invoke.texi (flto): Document debug info generation. + +--- a/src/gcc/doc/invoke.texi ++++ b/src/gcc/doc/invoke.texi +@@ -10335,6 +10335,14 @@ conflicting translation units. Specific + precedence; and for example @option{-ffp-contract=off} takes precedence + over @option{-ffp-contract=fast}. You can override them at link time. + ++To enable debug info generation you need to supply @option{-g} at ++compile-time. If any of the input files at link time were built ++with debug info generation enabled the link will enable debug info ++generation as well. Any elaborate debug info settings ++like the dwarf level @option{-gdwarf-5} need to be explicitely repeated ++at the linker command line and mixing different settings in different ++translation units is discouraged. ++ + If LTO encounters objects with C linkage declared with incompatible + types in separate translation units to be linked together (undefined + behavior according to ISO C99 6.2.7), a non-fatal diagnostic may be |