Provide InitializeAllTargets and InitializeNativeTarget functions in the

C bindings.  Change all the backend "Initialize" functions to have C linkage.
Change the "llvm/Config/Targets.def" header to use C-style comments to avoid
compile warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74026 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 58 insertions, 29 deletions

diff --git a/include/llvm-c/Target.h b/include/llvm-c/Target.h
index 5de5bc7..bb423bb 100644
--- a/include/llvm-c/Target.h
+++ b/include/llvm-c/Target.h
@@ -20,6 +20,7 @@
 #define LLVM_C_TARGET_H
 
 #include "llvm-c/Core.h"
+#include "llvm/Config/config.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -31,6 +32,34 @@ typedef int LLVMByteOrdering;
 typedef struct LLVMOpaqueTargetData *LLVMTargetDataRef;
 typedef struct LLVMStructLayout *LLVMStructLayoutRef;
 
+/* Declare all of the target-initialization functions that are available. */
+#define LLVM_TARGET(TargetName) void LLVMInitialize##TargetName##Target();
+#include "llvm/Config/Targets.def"
+
+/** LLVMInitializeAllTargets - The main program should call this function if it
+    wants to link in all available targets that LLVM is configured to
+    support. */
+static inline void LLVMInitializeAllTargets() {
+#define LLVM_TARGET(TargetName) LLVMInitialize##TargetName##Target();
+#include "llvm/Config/Targets.def"
+}
+  
+/** LLVMInitializeNativeTarget - The main program should call this function to
+    initialize the native target corresponding to the host.  This is useful 
+    for JIT applications to ensure that the target gets linked in correctly. */
+static inline int LLVMInitializeNativeTarget() {
+  /* If we have a native target, initialize it to ensure it is linked in. */
+#ifdef LLVM_NATIVE_ARCH
+#define DoInit2(TARG)   LLVMInitialize ## TARG ()
+#define DoInit(T) DoInit2(T)
+  DoInit(LLVM_NATIVE_ARCH);
+  return 0;
+#undef DoInit
+#undef DoInit2
+#else
+  return 1;
+#endif
+}  
 
 /*===-- Target Data -------------------------------------------------------===*/
 
diff --git a/include/llvm/Config/Targets.def.in b/include/llvm/Config/Targets.def.in
index a388472..d589ece 100644
--- a/include/llvm/Config/Targets.def.in
+++ b/include/llvm/Config/Targets.def.in
@@ -1,23 +1,23 @@
-//===- llvm/Config/Targets.def - LLVM Target Architectures ------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file enumerates all of the target architectures supported by
-// this build of LLVM. Clients of this file should define the
-// LLVM_TARGET macro to be a function-like macro with a single
-// parameter (the name of the target); including this file will then
-// enumerate all of the targets. 
-//
-// The set of targets supported by LLVM is generated at configuration
-// time, at which point this header is generated. Do not modify this
-// header directly.
-//
-//===----------------------------------------------------------------------===//
+/*===- llvm/Config/Targets.def - LLVM Target Architectures ------*- C++ -*-===*\
+|*                                                                            *|
+|*                     The LLVM Compiler Infrastructure                       *|
+|*                                                                            *|
+|* This file is distributed under the University of Illinois Open Source      *|
+|* License. See LICENSE.TXT for details.                                      *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This file enumerates all of the target architectures supported by          *|
+|* this build of LLVM. Clients of this file should define the                 *|
+|* LLVM_TARGET macro to be a function-like macro with a single                *|
+|* parameter (the name of the target); including this file will then          *|
+|* enumerate all of the targets.                                              *|
+|*                                                                            *|
+|* The set of targets supported by LLVM is generated at configuration         *|
+|* time, at which point this header is generated. Do not modify this          *|
+|* header directly.                                                           *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
 
 #ifndef LLVM_TARGET
 #  error Please define the macro LLVM_TARGET(TargetName)
diff --git a/include/llvm/Target/TargetSelect.h b/include/llvm/Target/TargetSelect.h
index 8aa314a..002d5fc 100644
--- a/include/llvm/Target/TargetSelect.h
+++ b/include/llvm/Target/TargetSelect.h
@@ -18,20 +18,21 @@
 
 #include "llvm/Config/config.h"
 
-namespace llvm {
+extern "C" {
   // Declare all of the target-initialization functions that are available.
-#define LLVM_TARGET(TargetName) void Initialize##TargetName##Target();
+#define LLVM_TARGET(TargetName) void LLVMInitialize##TargetName##Target();
 #include "llvm/Config/Targets.def"
   
   // Declare all of the available asm-printer initialization functions.
-  // Declare all of the target-initialization functions.
-#define LLVM_ASM_PRINTER(TargetName) void Initialize##TargetName##AsmPrinter();
+#define LLVM_ASM_PRINTER(TargetName) void LLVMInitialize##TargetName##AsmPrinter();
 #include "llvm/Config/AsmPrinters.def"
-  
+}
+
+namespace llvm {
   /// InitializeAllTargets - The main program should call this function if it
   /// wants to link in all available targets that LLVM is configured to support.
   inline void InitializeAllTargets() {
-#define LLVM_TARGET(TargetName) llvm::Initialize##TargetName##Target();
+#define LLVM_TARGET(TargetName) LLVMInitialize##TargetName##Target();
 #include "llvm/Config/Targets.def"
   }
   
@@ -39,18 +40,17 @@ namespace llvm {
   /// it wants all asm printers that LLVM is configured to support.  This will
   /// cause them to be linked into its executable.
   inline void InitializeAllAsmPrinters() {
-#define LLVM_ASM_PRINTER(TargetName) Initialize##TargetName##AsmPrinter();
+#define LLVM_ASM_PRINTER(TargetName) LLVMInitialize##TargetName##AsmPrinter();
 #include "llvm/Config/AsmPrinters.def"
   }
   
-  
   /// InitializeNativeTarget - The main program should call this function to
   /// initialize the native target corresponding to the host.  This is useful 
   /// for JIT applications to ensure that the target gets linked in correctly.
   inline bool InitializeNativeTarget() {
   // If we have a native target, initialize it to ensure it is linked in.
 #ifdef LLVM_NATIVE_ARCH
-#define DoInit2(TARG)   llvm::Initialize ## TARG ()
+#define DoInit2(TARG)   LLVMInitialize ## TARG ()
 #define DoInit(T) DoInit2(T)
     DoInit(LLVM_NATIVE_ARCH);
     return false;