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8372643: Warning message on macos when building the JDK - (arm64) /tmp/lto.o unable to open object file: No such file or directory #28559

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8372643: Warning message on macos when building the JDK - (arm64) /tmp/lto.o unable to open object file: No such file or directory #28559

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66013e8
JDK-8372643
MBaesken Nov 28, 2025
508122b
Move -Wl,-object_path_lto setting, and specify a file at OBJECT_DIR
MBaesken Dec 3, 2025
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5 changes: 5 additions & 0 deletions make/common/native/Flags.gmk
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Original file line number Diff line number Diff line change
Expand Up @@ -229,6 +229,11 @@ define SetupLinkerFlags
# TOOLCHAIN_TYPE plus OPENJDK_TARGET_OS
ifeq ($$($1_LINK_TIME_OPTIMIZATION), true)
$1_EXTRA_LDFLAGS += $(LDFLAGS_LTO)
# Instruct the ld64 linker not to delete the temporary object file
# generated during Link Time Optimization
ifeq ($(call isTargetOs, macosx), true)
$1_EXTRA_LDFLAGS += -Wl,-object_path_lto,$$($1_OBJECT_DIR)/$$($1_NAME)_lto_helper.o
endif
endif

$1_EXTRA_LDFLAGS += $$($1_LDFLAGS_$(OPENJDK_TARGET_OS_TYPE)) $$($1_LDFLAGS_$(OPENJDK_TARGET_OS)) \
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