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50d81bfbc1
ld64 shipped with Xcode 14 emits a warning when using `-undefined dynamic_lookup`. ``` ld: warning: -undefined dynamic_lookup may not work with chained fixups ``` Actually, `-undefined dynamic_lookup` doesn't work when: 1. Link a *shared library* with the option 2. Link it with a program that uses the chained-fixup introduced from macOS 12 and iOS 15 because `-undefined dynamic_lookup` uses lazy-bindings and they won't be bound while dyld fixes-up by traversing chained-fixup info. However, we build exts as *bundles* and they are loaded only through `dlopen`, so it's safe to use `-undefined dynamic_lookup` in theory. So the warning produced by ld64 is false-positive, and it results failure of option checking in configuration. Therefore, it would be an option to ignore the warning during our configuration. On the other hand, `-undefined dynamic_lookup` is already deprecated on all darwin platforms except for macOS, so it's good time to get rid of the option. ld64 also provides `-bundle_loader <executable>` option, which allows to resolve symbols defined in the executable symtab while linking. It behaves almost the same with `-undefined dynamic_lookup`, but it makes the following changes: 1. Require that unresolved symbols among input objects must be defined in the executable. 2. Lazy symbol binding will lookup only the symtab of the bundle loader executable. (`-undefined dynamic_lookup` lookups all symtab as flat namespace) This patch adds `-bundle_loader $(RUBY)` when non-EXTSTATIC configuration by assuming ruby executable can be linked before building exts. See "New Features" subsection under "Linking" section for chained fixup https://developer.apple.com/documentation/xcode-release-notes/xcode-13-release-notes |
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| .. | ||
| jis | ||
| trans | ||
| unicode | ||
| ascii.c | ||
| big5.c | ||
| cesu_8.c | ||
| cp949.c | ||
| depend | ||
| ebcdic.h | ||
| emacs_mule.c | ||
| encdb.c | ||
| encinit.c.erb | ||
| euc_jp.c | ||
| euc_kr.c | ||
| euc_tw.c | ||
| gb2312.c | ||
| gb18030.c | ||
| gbk.c | ||
| iso_2022_jp.h | ||
| iso_8859.h | ||
| iso_8859_1.c | ||
| iso_8859_2.c | ||
| iso_8859_3.c | ||
| iso_8859_4.c | ||
| iso_8859_5.c | ||
| iso_8859_6.c | ||
| iso_8859_7.c | ||
| iso_8859_8.c | ||
| iso_8859_9.c | ||
| iso_8859_10.c | ||
| iso_8859_11.c | ||
| iso_8859_13.c | ||
| iso_8859_14.c | ||
| iso_8859_15.c | ||
| iso_8859_16.c | ||
| koi8_r.c | ||
| koi8_u.c | ||
| make_encmake.rb | ||
| Makefile.in | ||
| mktable.c | ||
| shift_jis.c | ||
| shift_jis.h | ||
| unicode.c | ||
| us_ascii.c | ||
| utf_7.h | ||
| utf_8.c | ||
| utf_16_32.h | ||
| utf_16be.c | ||
| utf_16le.c | ||
| utf_32be.c | ||
| utf_32le.c | ||
| windows_31j.c | ||
| windows_1250.c | ||
| windows_1251.c | ||
| windows_1252.c | ||
| windows_1253.c | ||
| windows_1254.c | ||
| windows_1257.c | ||
| x_emoji.h | ||