Add libstdc++ to list of preloaded libraries

Make.inc

@@ -137,6 +137,7 @@ unexport O
 
 # Make sure the user didn't try to specify a path that will confuse the shell / make
 METACHARACTERS := ][?*{}() $$%:;&|!\#,\\`\":
+# ` # <-- This line fixes syntax highlighting in Emacs
 ifneq (,$(findstring ',$(value BUILDROOT)))
 $(error cowardly refusing to build into directory with a single-quote in the path)
 endif
@@ -1495,6 +1496,12 @@ ifneq ($(findstring $(OS),Linux FreeBSD),)
 LIBGCC_NAME := libgcc_s.$(SHLIB_EXT).1
 endif
 
+ifeq ($(OS),WINNT)
+LIBSTDCXX_NAME := libstdc++-6.$(SHLIB_EXT)
+else
+LIBSTDCXX_NAME := libstdc++.$(SHLIB_EXT)
+endif
+
 # USE_SYSTEM_CSL causes it to get symlinked into build_private_shlibdir
 ifeq ($(USE_SYSTEM_CSL),1)
 LIBGCC_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_private_shlibdir)/$(LIBGCC_NAME))
@@ -1513,9 +1520,18 @@ LIBM_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_shlibdir)/$(LIB
 endif
 LIBM_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
 
+# USE_SYSTEM_CSL causes it to get symlinked into build_private_shlibdir
+ifeq ($(USE_SYSTEM_CSL),1)
+LIBSTDCXX_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_private_shlibdir)/$(LIBSTDCXX_NAME))
+else
+LIBSTDCXX_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_shlibdir)/$(LIBSTDCXX_NAME))
+endif
+LIBSTDCXX_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBSTDCXX_NAME))
+
 # We list:
 #  * libgcc_s, because FreeBSD needs to load ours, not the system one.
 #  * libopenlibm, because Windows has an untrustworthy libm, and we want to use ours more than theirs
+#  * libstdc++, because the wrong version of this library may be picked up if others are available in the system, causing `ccall` not to find a compiler
 #  * libjulia-internal, which must always come second-to-last.
 #  * libjulia-codegen, which must always come last
 #
@@ -1525,10 +1541,10 @@ LIBM_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBMN
 # That second point will no longer be true for most deps once they are placed within Artifacts directories.
 # Note that we prefix `libjulia-codegen` and `libjulia-internal` with `@` to signify to the loader that it
 # should not automatically dlopen() it in its loading loop.
-LOADER_BUILD_DEP_LIBS = $(LIBGCC_BUILD_DEPLIB):$(LIBM_BUILD_DEPLIB):@$(LIBJULIAINTERNAL_BUILD_DEPLIB):@$(LIBJULIACODEGEN_BUILD_DEPLIB):
-LOADER_DEBUG_BUILD_DEP_LIBS = $(LIBGCC_BUILD_DEPLIB):$(LIBM_BUILD_DEPLIB):@$(LIBJULIAINTERNAL_DEBUG_BUILD_DEPLIB):@$(LIBJULIACODEGEN_DEBUG_BUILD_DEPLIB):
-LOADER_INSTALL_DEP_LIBS = $(LIBGCC_INSTALL_DEPLIB):$(LIBM_INSTALL_DEPLIB):@$(LIBJULIAINTERNAL_INSTALL_DEPLIB):@$(LIBJULIACODEGEN_INSTALL_DEPLIB):
-LOADER_DEBUG_INSTALL_DEP_LIBS = $(LIBGCC_INSTALL_DEPLIB):$(LIBM_INSTALL_DEPLIB):@$(LIBJULIAINTERNAL_DEBUG_INSTALL_DEPLIB):@$(LIBJULIACODEGEN_DEBUG_INSTALL_DEPLIB):
+LOADER_BUILD_DEP_LIBS = $(LIBGCC_BUILD_DEPLIB):$(LIBM_BUILD_DEPLIB):$(LIBSTDCXX_BUILD_DEPLIB):@$(LIBJULIAINTERNAL_BUILD_DEPLIB):@$(LIBJULIACODEGEN_BUILD_DEPLIB):
+LOADER_DEBUG_BUILD_DEP_LIBS = $(LIBGCC_BUILD_DEPLIB):$(LIBM_BUILD_DEPLIB):$(LIBSTDCXX_BUILD_DEPLIB):@$(LIBJULIAINTERNAL_DEBUG_BUILD_DEPLIB):@$(LIBJULIACODEGEN_DEBUG_BUILD_DEPLIB):
+LOADER_INSTALL_DEP_LIBS = $(LIBGCC_INSTALL_DEPLIB):$(LIBM_INSTALL_DEPLIB):$(LIBSTDCXX_INSTALL_DEPLIB):@$(LIBJULIAINTERNAL_INSTALL_DEPLIB):@$(LIBJULIACODEGEN_INSTALL_DEPLIB):
+LOADER_DEBUG_INSTALL_DEP_LIBS = $(LIBGCC_INSTALL_DEPLIB):$(LIBM_INSTALL_DEPLIB):$(LIBSTDCXX_INSTALL_DEPLIB):@$(LIBJULIAINTERNAL_DEBUG_INSTALL_DEPLIB):@$(LIBJULIACODEGEN_DEBUG_INSTALL_DEPLIB):
 
 # Colors for make
 ifndef VERBOSE