Add PNaCl target info to the makefile target cfgs and initialize the PNaCl target machine if available.

configure

@@ -616,6 +616,7 @@ valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path (de
 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
+valopt nacl-cross-path  "" "NaCl SDK path (Pepper Canary is recommended). Must be absolute!"
 valopt release-channel "dev" "the name of the release channel to build"
 valopt musl-root "/usr/local" "MUSL root installation directory"
 
@@ -1147,7 +1148,12 @@ do
                 fi
             done
             ;;
-
+        *-unknown-nacl)
+	    if [ -z "$CFG_NACL_CROSS_PATH" ]
+	    then
+		err "I need the NaCl SDK path! (use --nacl-cross-path)"
+	    fi
+	    ;;
         arm-apple-darwin)
             if [ $CFG_OSTYPE != apple-darwin ]
             then
@@ -1749,6 +1755,7 @@ putvar CFG_DISABLE_MANAGE_SUBMODULES
 putvar CFG_AARCH64_LINUX_ANDROID_NDK
 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
 putvar CFG_I686_LINUX_ANDROID_NDK
+putvar CFG_NACL_CROSS_PATH
 putvar CFG_MANDIR
 putvar CFG_USING_LIBCPP
 

mk/cfg/le32-unknown-nacl.mk

@@ -0,0 +1,40 @@
+# le32-unknown-nacl (portable, PNaCl)
+ifneq ($(CFG_NACL_CROSS_PATH),)
+
+CC_le32-unknown-nacl=$(shell $(CFG_PYTHON) $(CFG_NACL_CROSS_PATH)/tools/nacl_config.py -t pnacl --tool cc)
+CXX_le32-unknown-nacl=$(shell $(CFG_PYTHON) $(CFG_NACL_CROSS_PATH)/tools/nacl_config.py -t pnacl --tool c++)
+CPP_le32-unknown-nacl=$(CXX_le32-unknown-nacl) -E
+AR_le32-unknown-nacl=$(shell $(CFG_PYTHON) $(CFG_NACL_CROSS_PATH)/tools/nacl_config.py -t pnacl --tool ar)
+
+CFG_PNACL_TOOLCHAIN := $(abspath $(dir $(AR_le32-unknown-nacl)/../))
+
+# Note: pso's aren't supported by PNaCl.
+CFG_LIB_NAME_le32-unknown-nacl=lib$(1).pso
+CFG_STATIC_LIB_NAME_le32-unknown-nacl=lib$(1).a
+CFG_LIB_GLOB_le32-unknown-nacl=lib$(1)-*.pso
+CFG_LIB_DSYM_GLOB_le32-unknown-nacl=lib$(1)-*.dylib.dSYM
+CFG_GCCISH_CFLAGS_le32-unknown-nacl := -Wall -Wno-unused-variable -Wno-unused-value $(shell $(CFG_PYTHON) $(CFG_NACL_CROSS_PATH)/tools/nacl_config.py -t pnacl --cflags) -D_YUGA_LITTLE_ENDIAN=1 -D_YUGA_BIG_ENDIAN=0
+CFG_GCCISH_CXXFLAGS_le32-unknown-nacl := -stdlib=libc++ $(CFG_GCCISH_CFLAGS_le32-unknown-nacl)
+CFG_GCCISH_LINK_FLAGS_le32-unknown-nacl := -static -pthread -lm
+CFG_GCCISH_DEF_FLAG_le32-unknown-nacl := -Wl,--export-dynamic,--dynamic-list=
+CFG_GCCISH_PRE_LIB_FLAGS_le32-unknown-nacl := -Wl,-no-whole-archive
+CFG_GCCISH_POST_LIB_FLAGS_le32-unknown-nacl :=
+CFG_DEF_SUFFIX_le32-unknown-nacl := .le32.nacl.def
+CFG_INSTALL_NAME_le32-unknown-nacl =
+CFG_EXE_SUFFIX_le32-unknown-nacl = .pexe
+CFG_WINDOWSY_le32-unknown-nacl :=
+CFG_UNIXY_le32-unknown-nacl := 1
+CFG_NACLY_le32-unknown-nacl := 1
+CFG_PATH_MUNGE_le32-unknown-nacl := true
+CFG_LDPATH_le32-unknown-nacl :=
+CFG_RUN_le32-unknown-nacl=$(2)
+CFG_RUN_TARG_le32-unknown-nacl=$(call CFG_RUN_le32-unknown-nacl,,$(2))
+RUSTC_FLAGS_le32-unknown-nacl:=
+RUSTC_CROSS_FLAGS_le32-unknown-nacl=-L $(CFG_NACL_CROSS_PATH)/lib/pnacl/Release -L $(CFG_PNACL_TOOLCHAIN)/lib/clang/3.7.0/lib/le32-nacl -L $(CFG_PNACL_TOOLCHAIN)/le32-nacl/usr/lib -L $(CFG_PNACL_TOOLCHAIN)/le32-nacl/lib
+CFG_GNU_TRIPLE_le32-unknown-nacl := le32-unknown-nacl
+
+# strdup isn't defined unless -std=gnu++11 is used :/
+LLVM_FILTER_CXXFLAGS_le32-unknown-nacl := -std=c++11
+LLVM_EXTRA_CXXFLAGS_le32-unknown-nacl := -std=gnu++11
+
+endif

mk/main.mk

@@ -276,7 +276,7 @@ endif
 # LLVM macros
 ######################################################################
 
-LLVM_OPTIONAL_COMPONENTS=x86 arm aarch64 mips powerpc
+LLVM_OPTIONAL_COMPONENTS=x86 arm aarch64 mips powerpc pnacl
 LLVM_REQUIRED_COMPONENTS=ipo bitreader bitwriter linker asmparser mcjit \
                 interpreter instrumentation
 

src/librustc_llvm/lib.rs

@@ -2011,32 +2011,6 @@ extern {
     pub fn LLVMIsAAllocaInst(value_ref: ValueRef) -> ValueRef;
     pub fn LLVMIsAConstantInt(value_ref: ValueRef) -> ValueRef;
 
-    pub fn LLVMInitializeX86TargetInfo();
-    pub fn LLVMInitializeX86Target();
-    pub fn LLVMInitializeX86TargetMC();
-    pub fn LLVMInitializeX86AsmPrinter();
-    pub fn LLVMInitializeX86AsmParser();
-    pub fn LLVMInitializeARMTargetInfo();
-    pub fn LLVMInitializeARMTarget();
-    pub fn LLVMInitializeARMTargetMC();
-    pub fn LLVMInitializeARMAsmPrinter();
-    pub fn LLVMInitializeARMAsmParser();
-    pub fn LLVMInitializeAArch64TargetInfo();
-    pub fn LLVMInitializeAArch64Target();
-    pub fn LLVMInitializeAArch64TargetMC();
-    pub fn LLVMInitializeAArch64AsmPrinter();
-    pub fn LLVMInitializeAArch64AsmParser();
-    pub fn LLVMInitializeMipsTargetInfo();
-    pub fn LLVMInitializeMipsTarget();
-    pub fn LLVMInitializeMipsTargetMC();
-    pub fn LLVMInitializeMipsAsmPrinter();
-    pub fn LLVMInitializeMipsAsmParser();
-    pub fn LLVMInitializePowerPCTargetInfo();
-    pub fn LLVMInitializePowerPCTarget();
-    pub fn LLVMInitializePowerPCTargetMC();
-    pub fn LLVMInitializePowerPCAsmPrinter();
-    pub fn LLVMInitializePowerPCAsmParser();
-
     pub fn LLVMRustAddPass(PM: PassManagerRef, Pass: *const c_char) -> bool;
     pub fn LLVMRustCreateTargetMachine(Triple: *const c_char,
                                        CPU: *const c_char,
@@ -2144,6 +2118,53 @@ extern {
     pub fn LLVMRustGetModuleDataLayout(M: ModuleRef) -> TargetDataRef;
 }
 
+#[cfg(have_component_x86)]
+extern {
+    pub fn LLVMInitializeX86TargetInfo();
+    pub fn LLVMInitializeX86Target();
+    pub fn LLVMInitializeX86TargetMC();
+    pub fn LLVMInitializeX86AsmPrinter();
+    pub fn LLVMInitializeX86AsmParser();
+}
+#[cfg(have_component_arm)]
+extern {
+    pub fn LLVMInitializeARMTargetInfo();
+    pub fn LLVMInitializeARMTarget();
+    pub fn LLVMInitializeARMTargetMC();
+    pub fn LLVMInitializeARMAsmPrinter();
+    pub fn LLVMInitializeARMAsmParser();
+}
+#[cfg(have_component_aarch64)]
+extern {
+    pub fn LLVMInitializeAArch64TargetInfo();
+    pub fn LLVMInitializeAArch64Target();
+    pub fn LLVMInitializeAArch64TargetMC();
+    pub fn LLVMInitializeAArch64AsmPrinter();
+    pub fn LLVMInitializeAArch64AsmParser();
+}
+#[cfg(have_component_mips)]
+extern {
+    pub fn LLVMInitializeMipsTargetInfo();
+    pub fn LLVMInitializeMipsTarget();
+    pub fn LLVMInitializeMipsTargetMC();
+    pub fn LLVMInitializeMipsAsmPrinter();
+    pub fn LLVMInitializeMipsAsmParser();
+}
+#[cfg(have_component_powerpc)]
+extern {
+    pub fn LLVMInitializePowerPCTargetInfo();
+    pub fn LLVMInitializePowerPCTarget();
+    pub fn LLVMInitializePowerPCTargetMC();
+    pub fn LLVMInitializePowerPCAsmPrinter();
+    pub fn LLVMInitializePowerPCAsmParser();
+}
+#[cfg(have_component_pnacl)]
+extern {
+    pub fn LLVMInitializePNaClTargetInfo();
+    pub fn LLVMInitializePNaClTarget();
+    pub fn LLVMInitializePNaClTargetMC();
+}
+
 // LLVM requires symbols from this library, but apparently they're not printed
 // during llvm-config?
 #[cfg(windows)]
@@ -2357,6 +2378,20 @@ pub fn initialize_available_targets() {
     init_target!(have_component_aarch64 AArch64);
     init_target!(have_component_arm ARM);
     init_target!(have_component_x86 X86);
+
+    // PNaCl doesn't provide some of the optional target components, so we
+    // manually initialize it here.
+    #[cfg(have_component_pnacl)]
+    fn init_pnacl() {
+        unsafe {
+            LLVMInitializePNaClTargetInfo();
+            LLVMInitializePNaClTarget();
+            LLVMInitializePNaClTargetMC();
+        }
+    }
+    #[cfg(not(have_component_pnacl))]
+    fn init_pnacl() { }
+    init_pnacl();
 }
 
 // The module containing the native LLVM dependencies, generated by the build system