5e004b03f7
In macOS 12, dyld switched to using chained fixups. As a result, all symbols are bound at launch and there are no lazy pointers any more. Since we wish to import/dlopen() a dylib with missing symbols, we need to use a weak import. This applies to all macOS 12-aligned OS releases, e.g. iOS 15, etc. rdar://81295101 Differential Revision: https://reviews.llvm.org/D112034
30 lines
852 B
Makefile
30 lines
852 B
Makefile
CXX_SOURCES := main.cpp
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USE_LIBDL := 1
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all: t2_0 t2_1 t1 a.out
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include Makefile.rules
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ifeq "$(OS)" "Darwin"
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# In macOS 12, dyld switched to using chained fixups. As a result, all
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# symbols are bound at launch and there are no lazy pointers any more.
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# Since we wish to import/dlopen() a dylib with missing symbols, we need
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# to use a weak import. This applies to all macOS 12-aligned OS releases,
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# e.g. iOS 15, etc.
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LINKFLAGS := "-Wl,-weak-lt2_0"
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else
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LINKFLAGS := "-lt2_0"
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endif
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t1: t2_0
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$(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
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DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. $(LINKFLAGS)"
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t2_0:
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$(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
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DYLIB_ONLY=YES DYLIB_C_SOURCES=t2_0.c DYLIB_NAME=t2_0
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t2_1:
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$(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
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DYLIB_ONLY=YES DYLIB_C_SOURCES=t2_1.c DYLIB_NAME=t2_1
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