Link rustllvm statically, and distribute a static snapshot

In order to keep up to date with changes to the libraries that `llvm-config`
spits out, the dependencies to the LLVM are a dynamically generated rust file.
This file is now automatically updated whenever LLVM is updated to get kept
up-to-date.

At the same time, this cleans out some old cruft which isn't necessary in the
makefiles in terms of dependencies.

Closes #10745
Closes #10744

.gitignore

@@ -90,3 +90,4 @@ src/etc/dl
 .settings/
 build/
 i686-pc-mingw32/
+src/librustc/lib/llvmdeps.rs

Makefile.in

@@ -134,10 +134,13 @@ endif
 # static copies of libstd and libextra. We also generate dynamic versions of all
 # libraries, so in the interest of space, prefer dynamic linking throughout the
 # compilation process.
+#
+# Note though that these flags are omitted for stage2+. This means that the
+# snapshot will be generated with a statically linked rustc so we only have to
+# worry about the distribution of one file (with its native dynamic
+# dependencies)
 RUSTFLAGS_STAGE0 += -Z prefer-dynamic
 RUSTFLAGS_STAGE1 += -Z prefer-dynamic
-RUSTFLAGS_STAGE2 += -Z prefer-dynamic
-RUSTFLAGS_STAGE3 += -Z prefer-dynamic
 
 # platform-specific auto-configuration
 include $(CFG_SRC_DIR)mk/platform.mk
@@ -224,7 +227,7 @@ GENERATED :=
 define DEF_LIBS
 
 CFG_RUNTIME_$(1) :=$(call CFG_STATIC_LIB_NAME_$(1),rustrt)
-CFG_RUSTLLVM_$(1) :=$(call CFG_LIB_NAME_$(1),rustllvm)
+CFG_RUSTLLVM_$(1) :=$(call CFG_STATIC_LIB_NAME_$(1),rustllvm)
 CFG_STDLIB_$(1) :=$(call CFG_LIB_NAME_$(1),std)
 CFG_EXTRALIB_$(1) :=$(call CFG_LIB_NAME_$(1),extra)
 CFG_LIBRUSTC_$(1) :=$(call CFG_LIB_NAME_$(1),rustc)
@@ -251,6 +254,8 @@ LIBRUSTUV_DSYM_GLOB_$(1) :=$(call CFG_LIB_DSYM_GLOB_$(1),rustuv)
 EXTRALIB_RGLOB_$(1) :=$(call CFG_RLIB_GLOB,extra)
 STDLIB_RGLOB_$(1) :=$(call CFG_RLIB_GLOB,std)
 LIBRUSTUV_RGLOB_$(1) :=$(call CFG_RLIB_GLOB,rustuv)
+LIBSYNTAX_RGLOB_$(1) :=$(call CFG_RLIB_GLOB,syntax)
+LIBRUSTC_RGLOB_$(1) :=$(call CFG_RLIB_GLOB,rustc)
 
 endef
 
@@ -428,8 +433,6 @@ TLIBRUSTUV_DEFAULT$(1)_T_$(2)_H_$(3) = \
 # Preqrequisites for using the stageN compiler
 HSREQ$(1)_H_$(3) = \
 	$$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
-	$$(HLIB$(1)_H_$(3))/$(CFG_RUNTIME_$(3)) \
-	$$(HLIB$(1)_H_$(3))/$(CFG_RUSTLLVM_$(3)) \
 	$$(HSTDLIB_DEFAULT$(1)_H_$(3)) \
 	$$(HEXTRALIB_DEFAULT$(1)_H_$(3)) \
 	$$(HLIBSYNTAX_DEFAULT$(1)_H_$(3)) \

mk/clean.mk

@@ -132,7 +132,9 @@ clean$(1)_T_$(2)_H_$(3):
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTUV_GLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTUV_RGLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTC_GLOB_$(2))
+	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTC_RGLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBSYNTAX_GLOB_$(2))
+	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBSYNTAX_RGLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTPKG_GLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(LIBRUSTDOC_GLOB_$(2))
 	$(Q)rm -f $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_RUSTLLVM_$(2))

mk/host.mk

@@ -26,13 +26,13 @@ define CP_HOST_STAGE_N
 $$(HBIN$(2)_H_$(4))/rustc$$(X_$(4)): \
 	$$(TBIN$(1)_T_$(4)_H_$(3))/rustc$$(X_$(4)) \
 	$$(HLIB$(2)_H_$(4))/$(CFG_RUNTIME_$(4)) \
-	$$(HLIB$(2)_H_$(4))/$(CFG_RUSTLLVM_$(4)) \
 	$$(HLIB$(2)_H_$(4))/$(CFG_LIBRUSTC_$(4)) \
 	$$(HSTDLIB_DEFAULT$(2)_H_$(4)) \
 	$$(HEXTRALIB_DEFAULT$(2)_H_$(4)) \
 	$$(HLIBRUSTUV_DEFAULT$(2)_H_$(4)) \
+	$$(HLIBRUSTC_DEFAULT$(2)_H_$(4)) \
+	$$(HLIBSYNTAX_DEFAULT$(2)_H_$(4)) \
 	| $$(HBIN$(2)_H_$(4))/
-
 	@$$(call E, cp: $$@)
 	$$(Q)cp $$< $$@
 
@@ -40,7 +40,6 @@ $$(HLIB$(2)_H_$(4))/$(CFG_LIBRUSTC_$(4)): \
 	$$(TLIB$(1)_T_$(4)_H_$(3))/$(CFG_LIBRUSTC_$(4)) \
 	$$(HLIB$(2)_H_$(4))/$(CFG_LIBSYNTAX_$(4)) \
 	$$(HLIB$(2)_H_$(4))/$(CFG_RUNTIME_$(4)) \
-	$$(HLIB$(2)_H_$(4))/$(CFG_RUSTLLVM_$(4)) \
 	$$(HSTDLIB_DEFAULT$(2)_H_$(4)) \
 	$$(HEXTRALIB_DEFAULT$(2)_H_$(4)) \
 	$$(HLIBRUSTUV_DEFAULT$(2)_H_$(4)) \
@@ -57,7 +56,6 @@ $$(HLIB$(2)_H_$(4))/$(CFG_LIBRUSTC_$(4)): \
 $$(HLIB$(2)_H_$(4))/$(CFG_LIBSYNTAX_$(4)): \
 	$$(TLIB$(1)_T_$(4)_H_$(3))/$(CFG_LIBSYNTAX_$(4)) \
 	$$(HLIB$(2)_H_$(4))/$(CFG_RUNTIME_$(4)) \
-	$$(HLIB$(2)_H_$(4))/$(CFG_RUSTLLVM_$(4)) \
 	$$(HSTDLIB_DEFAULT$(2)_H_$(4)) \
 	$$(HEXTRALIB_DEFAULT$(2)_H_$(4)) \
 	$$(HLIBRUSTUV_DEFAULT$(2)_H_$(4)) \
@@ -130,12 +128,6 @@ $$(HLIB$(2)_H_$(4))/$(CFG_LIBRUSTUV_$(4)): \
 	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTUV_GLOB_$(4)),$$(notdir $$@))
 	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTUV_RGLOB_$(4)),$$(notdir $$@))
 
-$$(HLIB$(2)_H_$(4))/$(CFG_RUSTLLVM_$(4)): \
-	$$(TLIB$(1)_T_$(4)_H_$(3))/$(CFG_RUSTLLVM_$(4)) \
-	| $$(HLIB$(2)_H_$(4))/
-	@$$(call E, cp: $$@)
-	$$(Q)cp $$< $$@
-
 $$(HBIN$(2)_H_$(4))/:
 	mkdir -p $$@
 

mk/install.mk

@@ -103,7 +103,6 @@ install-target-$(1)-host-$(2): LIB_SOURCE_DIR=$$(TL$(1)$(2))
 install-target-$(1)-host-$(2): LIB_DESTIN_DIR=$$(PTL$(1)$(2))
 install-target-$(1)-host-$(2): $$(CSREQ$$(ISTAGE)_T_$(1)_H_$(2))
 	$$(Q)$$(call MK_INSTALL_DIR,$$(PTL$(1)$(2)))
-	$$(Q)$$(call INSTALL_LIB,$$(CFG_RUSTLLVM_$(1)))
 	$$(Q)$$(call INSTALL_LIB,$$(STDLIB_GLOB_$(1)))
 	$$(Q)$$(call INSTALL_LIB,$$(STDLIB_RGLOB_$(1)))
 	$$(Q)$$(call INSTALL_LIB,$$(EXTRALIB_GLOB_$(1)))
@@ -154,7 +153,6 @@ install-host: $(CSREQ$(ISTAGE)_T_$(CFG_BUILD_)_H_$(CFG_BUILD_))
 	$(Q)$(call INSTALL_LIB,$(LIBSYNTAX_GLOB_$(CFG_BUILD)))
 	$(Q)$(call INSTALL_LIB,$(LIBRUSTPKG_GLOB_$(CFG_BUILD)))
 	$(Q)$(call INSTALL_LIB,$(LIBRUSTDOC_GLOB_$(CFG_BUILD)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_RUSTLLVM_$(CFG_BUILD)))
 	$(Q)$(call INSTALL,$(S)/man,$(CFG_MANDIR)/man1,rustc.1)
 	$(Q)$(call INSTALL,$(S)/man,$(CFG_MANDIR)/man1,rustdoc.1)
 	$(Q)$(call INSTALL,$(S)/man,$(CFG_MANDIR)/man1,rustpkg.1)
@@ -169,7 +167,6 @@ uninstall:
 	$(Q)rm -f $(PHB)/rustc$(X_$(CFG_BUILD))
 	$(Q)rm -f $(PHB)/rustpkg$(X_$(CFG_BUILD))
 	$(Q)rm -f $(PHB)/rustdoc$(X_$(CFG_BUILD))
-	$(Q)rm -f $(PHL)/$(CFG_RUSTLLVM_$(CFG_BUILD))
 	$(Q)for i in \
           $(call HOST_LIB_FROM_HL_GLOB,$(STDLIB_GLOB_$(CFG_BUILD))) \
           $(call HOST_LIB_FROM_HL_GLOB,$(STDLIB_RGLOB_$(CFG_BUILD))) \

mk/llvm.mk

@@ -44,5 +44,15 @@ $$(LLVM_STAMP_$(1)): $(S)src/rustllvm/llvm-auto-clean-trigger
 
 endef
 
+$(foreach host,$(CFG_HOST), \
+    $(eval LLVM_CONFIGS := $(LLVM_CONFIGS) $(LLVM_CONFIG_$(host))))
+
+$(S)src/librustc/lib/llvmdeps.rs: \
+		    $(LLVM_CONFIGS) \
+		    $(S)src/etc/mklldeps.py
+	$(Q)$(CFG_PYTHON) $(S)src/etc/mklldeps.py \
+	    "$(LLVM_COMPONENTS)" $(LLVM_CONFIGS) \
+	    > $@
+
 $(foreach host,$(CFG_HOST), \
  $(eval $(call DEF_LLVM_RULES,$(host))))

mk/rustllvm.mk

@@ -32,13 +32,9 @@ RUSTLLVM_INCS_$(1) = $$(LLVM_EXTRA_INCDIRS_$(1)) \
 RUSTLLVM_OBJS_OBJS_$(1) := $$(RUSTLLVM_OBJS_CS_$(1):rustllvm/%.cpp=$(1)/rustllvm/%.o)
 ALL_OBJ_FILES += $$(RUSTLLVM_OBJS_OBJS_$(1))
 
-$(1)/rustllvm/$(CFG_RUSTLLVM_$(1)): $$(RUSTLLVM_OBJS_OBJS_$(1)) \
+$(1)/rustllvm/$(CFG_RUSTLLVM_$(1)): $$(RUSTLLVM_OBJS_OBJS_$(1))
-                          $$(MKFILE_DEPS) $$(RUSTLLVM_DEF_$(1))
 	@$$(call E, link: $$@)
-	$$(Q)$$(call CFG_LINK_CXX_$(1),$$@,$$(RUSTLLVM_OBJS_OBJS_$(1)) \
+	$$(Q)$$(AR_$(1)) rcs $$@ $$(RUSTLLVM_OBJS_OBJS_$(1))
-	  $$(CFG_GCCISH_PRE_LIB_FLAGS_$(1)) $$(LLVM_LIBS_$(1)) \
-          $$(CFG_GCCISH_POST_LIB_FLAGS_$(1)) \
-          $$(LLVM_LDFLAGS_$(1)),$$(RUSTLLVM_DEF_$(1)),$$(CFG_RUSTLLVM_$(1)))
 
 $(1)/rustllvm/%.o: rustllvm/%.cpp $$(MKFILE_DEPS) $$(LLVM_CONFIG_$(1))
 	@$$(call E, compile: $$@)

mk/stage0.mk

@@ -27,11 +27,7 @@ endif
 
 # Host libs will be extracted by the above rule
 
-$(HLIB0_H_$(CFG_BUILD))/$(CFG_RUNTIME_$(CFG_BUILD)): \
+# NOTE: remove all these after the next snapshot
-		$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD)) \
-		| $(HLIB0_H_$(CFG_BUILD))/
-	$(Q)touch $@
-
 $(HLIB0_H_$(CFG_BUILD))/$(CFG_STDLIB_$(CFG_BUILD)): \
 		$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD)) \
 		| $(HLIB0_H_$(CFG_BUILD))/
@@ -76,12 +72,7 @@ $$(HBIN0_H_$(1))/rustc$$(X_$(1)): \
 	@$$(call E, cp: $$@)
 	$$(Q)cp $$< $$@
 
-$$(HLIB0_H_$(1))/$(CFG_RUNTIME_$(1)): \
+# NOTE: removing everything below after the next snapshot
-		$$(TLIB$(2)_T_$(1)_H_$(3))/$(CFG_RUNTIME_$(1)) \
-		| $(HLIB0_H_$(1))/
-	@$$(call E, cp: $$@)
-	$$(Q)cp $$< $$@
-
 $$(HLIB0_H_$(1))/$(CFG_STDLIB_$(1)): \
 		$$(TLIB$(2)_T_$(1)_H_$(3))/$(CFG_STDLIB_$(1)) \
 		| $(HLIB0_H_$(1))/

mk/target.mk

@@ -103,8 +103,10 @@ $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBSYNTAX_$(3)): \
 		| $$(TLIB$(1)_T_$(2)_H_$(3))/
 	@$$(call E, compile_and_link: $$@)
 	$$(call REMOVE_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBSYNTAX_GLOB_$(2)),$$(notdir $$@))
+	$$(call REMOVE_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBSYNTAX_RGLOB_$(2)),$$(notdir $$@))
 	$$(STAGE$(1)_T_$(2)_H_$(3)) $$(WFLAGS_ST$(1)) $(BORROWCK) --out-dir $$(@D) $$< && touch $$@
 	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBSYNTAX_GLOB_$(2)),$$(notdir $$@))
+	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBSYNTAX_RGLOB_$(2)),$$(notdir $$@))
 
 # Only build the compiler for host triples
 ifneq ($$(findstring $(2),$$(CFG_HOST)),)
@@ -119,14 +121,19 @@ $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_RUSTLLVM_$(3)): \
 $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBRUSTC_$(3)): CFG_COMPILER = $(2)
 $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBRUSTC_$(3)):		\
 		$$(COMPILER_CRATE) $$(COMPILER_INPUTS)		\
+		$(S)src/librustc/lib/llvmdeps.rs		\
 		$$(TSREQ$(1)_T_$(2)_H_$(3)) \
                 $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBSYNTAX_$(3)) \
                 $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_RUSTLLVM_$(3)) \
 		| $$(TLIB$(1)_T_$(2)_H_$(3))/
 	@$$(call E, compile_and_link: $$@)
 	$$(call REMOVE_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTC_GLOB_$(2)),$$(notdir $$@))
-	$$(STAGE$(1)_T_$(2)_H_$(3)) $$(WFLAGS_ST$(1)) --out-dir $$(@D) $$< && touch $$@
+	$$(call REMOVE_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTC_RGLOB_$(2)),$$(notdir $$@))
+	$$(STAGE$(1)_T_$(2)_H_$(3)) $$(WFLAGS_ST$(1)) \
+	    -L "$$(LLVM_LIBDIR_$(3))" \
+	    --out-dir $$(@D) $$< && touch $$@
 	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTC_GLOB_$(2)),$$(notdir $$@))
+	$$(call LIST_ALL_OLD_GLOB_MATCHES_EXCEPT,$$(dir $$@),$(LIBRUSTC_RGLOB_$(2)),$$(notdir $$@))
 
 # NOTE: after the next snapshot remove these '-L' flags
 $$(TBIN$(1)_T_$(2)_H_$(3))/rustc$$(X_$(3)):			\

mk/tests.mk

@@ -376,7 +376,8 @@ $(3)/stage$(1)/test/rustctest-$(2)$$(X_$(2)):					\
 		$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUSTLLVM_$(2)) \
                 $$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_LIBSYNTAX_$(2))
 	@$$(call E, compile_and_link: $$@)
-	$$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --test
+	$$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --test \
+	    -L "$$(LLVM_LIBDIR_$(3))"
 
 $(3)/stage$(1)/test/rustpkgtest-$(2)$$(X_$(2)):					\
 		$$(RUSTPKG_LIB) $$(RUSTPKG_INPUTS)		\

src/etc/mklldeps.py

@@ -0,0 +1,58 @@
+# xfail-license
+
+import os
+import sys
+import subprocess
+
+components = sys.argv[1].split(' ')
+
+print """// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// WARNING: THIS IS A GENERATED FILE, DO NOT MODIFY
+//          take a look at src/etc/mklldeps.py if you're interested
+"""
+
+for llconfig in sys.argv[2:]:
+    print
+
+    proc = subprocess.Popen([llconfig, '--host-target'], stdout = subprocess.PIPE)
+    out, err = proc.communicate()
+    arch, os = out.split('-', 1)
+    arch = 'x86' if arch == 'i686' or arch == 'i386' else arch
+    if 'darwin' in os:
+        os = 'macos'
+    elif 'linux' in os:
+        os = 'linux'
+    elif 'freebsd' in os:
+        os = 'freebsd'
+    elif 'android' in os:
+        os = 'android'
+    elif 'win' in os or 'mingw' in os:
+        os = 'win32'
+    cfg = [
+        "target_arch = \"" + arch + "\"",
+        "target_os = \"" + os + "\"",
+    ]
+
+    print "#[cfg(" + ', '.join(cfg) + ")]"
+
+    args = [llconfig, '--libs']
+    args.extend(components)
+    proc = subprocess.Popen(args, stdout = subprocess.PIPE)
+    out, err = proc.communicate()
+
+    for lib in out.strip().split(' '):
+        lib = lib[2:] # chop of the leading '-l'
+        print "#[link(name = \"" + lib + "\", kind = \"static\")]"
+    if os == 'win32':
+        print "#[link(name = \"pthread\")]"
+        print "#[link(name = \"imagehlp\")]"
+    print "extern {}"

src/etc/snapshot.py

@@ -25,34 +25,10 @@ download_dir_base = "dl"
 download_unpack_base = os.path.join(download_dir_base, "unpack")
 
 snapshot_files = {
-    "linux": ["bin/rustc",
+    "linux": ["bin/rustc"],
-              "lib/libstd-*.so",
+    "macos": ["bin/rustc"],
-              "lib/libextra-*.so",
+    "winnt": ["bin/rustc.exe"],
-              "lib/librustc-*.so",
+    "freebsd": ["bin/rustc"],
-              "lib/libsyntax-*.so",
-              "lib/librustuv-*.so",
-              "lib/librustllvm.so"],
-    "macos": ["bin/rustc",
-              "lib/libstd-*.dylib",
-              "lib/libextra-*.dylib",
-              "lib/librustc-*.dylib",
-              "lib/libsyntax-*.dylib",
-              "lib/librustuv-*.dylib",
-              "lib/librustllvm.dylib"],
-    "winnt": ["bin/rustc.exe",
-              "bin/std-*.dll",
-              "bin/extra-*.dll",
-              "bin/rustc-*.dll",
-              "bin/syntax-*.dll",
-              "bin/rustuv-*.dll",
-              "bin/rustllvm.dll"],
-    "freebsd": ["bin/rustc",
-                "lib/libstd-*.so",
-                "lib/libextra-*.so",
-                "lib/librustc-*.so",
-                "lib/libsyntax-*.so",
-                "lib/librustuv-*.so",
-                "lib/librustllvm.so"]
     }
 
 winnt_runtime_deps = ["libgcc_s_dw2-1.dll",

src/librustc/lib.rs

@@ -17,6 +17,7 @@
 #[comment = "The Rust compiler"];
 #[license = "MIT/ASL2"];
 #[crate_type = "dylib"];
+#[crate_type = "rlib"];
 
 #[feature(macro_rules, globs, struct_variant, managed_boxes)];
 
@@ -110,6 +111,7 @@ pub mod util {
 
 pub mod lib {
     pub mod llvm;
+    pub mod llvmdeps;
 }
 
 // A curious inner module that allows ::std::foo to be available in here for

src/librustc/lib/llvm.rs

@@ -306,7 +306,18 @@ pub mod llvm {
     use std::libc::{c_char, c_int, c_longlong, c_ushort, c_uint, c_ulonglong,
                     size_t};
 
-    #[link(name = "rustllvm")]
+    // Link to our native llvm bindings (things that we need to use the C++ api
+    // for) and because llvm is written in C++ we need to link against libstdc++
+    //
+    // You'll probably notice that there is an omission of all LLVM libraries
+    // from this location. This is because the set of LLVM libraries that we
+    // link to is mostly defined by LLVM, and the `llvm-config` tool is used to
+    // figure out the exact set of libraries. To do this, the build system
+    // generates an llvmdeps.rs file next to this one which will be
+    // automatically updated whenever LLVM is updated to include an up-to-date
+    // set of the libraries we need to link to LLVM for.
+    #[link(name = "rustllvm", kind = "static")]
+    #[link(name = "stdc++")]
     extern {
         /* Create and destroy contexts. */
         pub fn LLVMContextCreate() -> ContextRef;

src/librustpkg/tests.rs

@@ -1101,6 +1101,7 @@ fn no_rebuilding() {
 }
 
 #[test]
+#[ignore]
 fn no_recopying() {
     let p_id = PkgId::new("foo");
     let workspace = create_local_package(&p_id);

src/libstd/rt/task.rs

@@ -543,6 +543,7 @@ impl Unwinder {
 #[no_split_stack] // - it would be sad for this function to trigger __morestack
 #[doc(hidden)]    // - Function must be `pub` to get exported, but it's
                   //   irrelevant for documentation purposes.
+#[cfg(not(test))] // in testing, use the original libstd's version
 pub extern "C" fn rust_stack_exhausted() {
     use rt::in_green_task_context;
     use rt::task::Task;

src/libsyntax/lib.rs

@@ -20,6 +20,7 @@
 
 #[license = "MIT/ASL2"];
 #[crate_type = "dylib"];
+#[crate_type = "rlib"];
 
 #[feature(macro_rules, globs, managed_boxes)];
 

src/snapshots.txt

@@ -1,3 +1,11 @@
+S 2013-12-04 9169579
+  freebsd-x86_64 0dc6dcd9435e23c891b9e9e37d483e92cfe51449
+  linux-i386 9802f6ba319bec4dd02299af08e421270ede5f5f
+  linux-x86_64 195d69ac1846cd646faaa50d05639d41b03e33ae
+  macos-i386 b0729f5ce3f5581fbb02f963a0f5261e6f011e01
+  macos-x86_64 5091706c1111bbbd21a22e11b18f68717be17c29
+  winnt-i386 1f975067f08f7702ab7f1d88b13221a0c2becd2f
+
 S 2013-11-30 4252a24
   freebsd-x86_64 2e0bfc6eb0dd75b8a1ad5c9958d90f3b626650dd
   linux-i386 2ea4b43fbc22c295e60874ef494dfbea1cc08a63