[Lldb-commits] [lldb] 5e004b0 - [lldb/test] Update test/API/functionalities/load_lazy to macOS 12

[Vedant Kumar via lldb-commits]

Author: Vedant Kumar
Date: 2021-10-19T13:25:14-07:00
New Revision: 5e004b03f72a17f916b93792eb778dfa9e7a09cc

URL: https://github.com/llvm/llvm-project/commit/5e004b03f72a17f916b93792eb778dfa9e7a09cc
DIFF: https://github.com/llvm/llvm-project/commit/5e004b03f72a17f916b93792eb778dfa9e7a09cc.diff

LOG: [lldb/test] Update test/API/functionalities/load_lazy to macOS 12

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

Added: 
    

Modified: 
    lldb/test/API/functionalities/load_lazy/Makefile

Removed: 
    


################################################################################
diff  --git a/lldb/test/API/functionalities/load_lazy/Makefile b/lldb/test/API/functionalities/load_lazy/Makefile
index 7200114d03aeb..81bc7dcb4d05f 100644
--- a/lldb/test/API/functionalities/load_lazy/Makefile
+++ b/lldb/test/API/functionalities/load_lazy/Makefile
@@ -5,9 +5,20 @@ all: t2_0 t2_1 t1 a.out
 
 include Makefile.rules
 
+ifeq "$(OS)" "Darwin"
+	# 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.
+	LINKFLAGS := "-Wl,-weak-lt2_0"
+else
+	LINKFLAGS := "-lt2_0"
+endif
+
 t1: t2_0
 	$(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
-		DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. -lt2_0"
+		DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. $(LINKFLAGS)"
 
 t2_0:
 	$(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \