================
@@ -418,11 +437,28 @@ ifeq (1, $(USE_SYSTEM_STDLIB))
endif
endif
+# No C++ library has been specifieed. Use libstdc++ by default.
+ifeq (,$(filter 1, $(USE_LIBSTDCPP) $(USE_LIBCPP) $(USE_SYSTEM_STDLIB)))
+ # If no explicit request was made, but we have paths to a custom libcxx, use
+ # them.
+ ifneq ($(and $(LIBCPP_INCLUDE_DIR), $(LIBCPP_LIBRARY_DIR)),)
+ CXXFLAGS += -nostdlib++ -nostdinc++ -cxx-isystem $(LIBCPP_INCLUDE_DIR)
+ ifneq "$(LIBCPP_INCLUDE_TARGET_DIR)" ""
+ CXXFLAGS += -cxx-isystem $(LIBCPP_INCLUDE_TARGET_DIR)
+ endif
+ LDFLAGS += -L$(LIBCPP_LIBRARY_DIR) -Wl,-rpath,$(LIBCPP_LIBRARY_DIR) -lc++
-lc++abi
+ # Otherwise no C++ library has been specified. Use stdc++ by default.
+ else
+ USE_LIBSTDCPP := 1
----------------
labath wrote:
this default doesn't make sense for darwin and windows builds. Could we default
to the system library instead?
https://github.com/llvm/llvm-project/pull/99266
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