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Allow passing RTLIB=compiler-rt to make

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Not all linux users will have libatomic installed.
When using clang as the system compiler with compiler-rt as the default
runtime library instead of libgcc, atomic builtins may be provided by compiler-rt.
This change allows such users to pass RTLIB=compiler-rt to make sure
the build doesn't error out on the missing (unnecessary) libatomic.

closes https://github.com/official-stockfish/Stockfish/pull/3597

No functional change
This commit is contained in:
Paul Mulders
2021-06-29 11:13:54 +02:00
committed by Joost VandeVondele
parent ec8dfe7315
commit 516ad1c9bf
1 changed files with 2 additions and 0 deletions
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src/Makefile
+2
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@@ -386,10 +386,12 @@ ifeq ($(COMP),clang)
ifneq ($(KERNEL),Darwin) ifneq ($(KERNEL),Darwin)
ifneq ($(KERNEL),OpenBSD) ifneq ($(KERNEL),OpenBSD)
ifneq ($(KERNEL),FreeBSD) ifneq ($(KERNEL),FreeBSD)
ifneq ($(RTLIB),compiler-rt)
LDFLAGS += -latomic LDFLAGS += -latomic
endif endif
endif endif
endif endif
endif
ifeq ($(arch),$(filter $(arch),armv7 armv8)) ifeq ($(arch),$(filter $(arch),armv7 armv8))
ifeq ($(OS),Android) ifeq ($(OS),Android)