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synced 2022-11-09 12:17:21 -05:00
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
88 lines
2 KiB
Makefile
88 lines
2 KiB
Makefile
V = 0
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V0 = $(V:0=)
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Q1 = $(V:1=)
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Q = $(Q1:0=@)
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ECHO1 = $(V:1=@@NULLCMD@)
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ECHO = $(ECHO1:0=@echo)
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encsrcdir = @srcdir@
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topdir = .
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prefix = @prefix@
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exec_prefix = @exec_prefix@
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libdir = @libdir@
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top_srcdir = $(encsrcdir:/enc=)
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srcdir = $(top_srcdir)
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tooldir = $(top_srcdir)/tool
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arch = @arch@
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EXTOUT = @EXTOUT@
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hdrdir = $(srcdir)/include
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arch_hdrdir = $(EXTOUT)/include/$(arch)
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ENCSODIR = $(EXTOUT)/$(arch)/enc
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TRANSSODIR = $(ENCSODIR)/trans
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DLEXT = @DLEXT@
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OBJEXT = @OBJEXT@
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LIBEXT = @LIBEXT@
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EXEEXT = @EXEEXT@
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TIMESTAMPDIR = $(EXTOUT)/.timestamp
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ENC_TRANS_D = $(TIMESTAMPDIR)/.enc-trans.time
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ENC_TRANS_SO_D = $(TIMESTAMPDIR)/.enc-trans.so.time
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BUILTIN_ENCS = enc/ascii.c enc/us_ascii.c\
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enc/unicode.c enc/utf_8.c
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BUILTIN_TRANSES = enc/trans/newline.trans
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RUBY_SO_NAME = @RUBY_SO_NAME@
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LIBRUBY = @LIBRUBY@
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LIBRUBYARG_SHARED = @LIBRUBYARG_SHARED@
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LIBRUBYARG_STATIC = $(LIBRUBYARG_SHARED)
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BUILTRUBY = $(topdir)/ruby$(EXEEXT)
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empty =
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AR = @AR@
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CC = @CC@
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ARFLAGS = @ARFLAGS@$(empty)
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RANLIB = @RANLIB@
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OUTFLAG = @OUTFLAG@$(empty)
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COUTFLAG = @COUTFLAG@$(empty)
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CFLAGS = $(CCDLFLAGS) @CFLAGS@ @ARCH_FLAG@
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cflags = @cflags@
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optflags = @optflags@
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debugflags = @debugflags@
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warnflags = @warnflags@
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CCDLFLAGS = @CCDLFLAGS@
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INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(top_srcdir)
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DEFS = @DEFS@
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CPPFLAGS = @CPPFLAGS@ -DONIG_ENC_REGISTER=rb_enc_register
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LDFLAGS = @LDFLAGS@
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LDSHARED = @LDSHARED@
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ldflags = $(LDFLAGS)
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dldflags = @DLDFLAGS@
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extdldflags = @EXTDLDFLAGS@
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archflag = @ARCH_FLAG@
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DLDFLAGS = $(ldflags) $(dldflags) $(extdldflags) $(archflag)
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RUBY = $(MINIRUBY)
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TARGET_NAME_ = $(@F) # BSD make seems unable to deal with @F with substitution
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TARGET_NAME = $(TARGET_NAME_:.@DLEXT@=)
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TARGET_ENTRY = @EXPORT_PREFIX@Init_$(TARGET_NAME)
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WORKDIRS = @WORKDIRS@
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NULLCMD = @NULLCMD@
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RM = @RM@
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RMDIR = @RMDIR@
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RMDIRS = @RMDIRS@
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MAKEDIRS = @MAKEDIRS@
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.SUFFIXES: .trans
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all:
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make-workdir:
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$(Q)$(MAKEDIRS) $(WORKDIRS)
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clean:
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distclean: clean
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$(Q)$(RM) enc.mk
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realclean: distclean clean-srcs
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