abi-breaking.h revision 1.3
1/*===------- llvm/Config/abi-breaking.h - llvm configuration -------*- C -*-===*/ 2/* */ 3/* The LLVM Compiler Infrastructure */ 4/* */ 5/* This file is distributed under the University of Illinois Open Source */ 6/* License. See LICENSE.TXT for details. */ 7/* */ 8/*===----------------------------------------------------------------------===*/ 9 10/* This file controls the C++ ABI break introduced in LLVM public header. */ 11 12#ifndef LLVM_ABI_BREAKING_CHECKS_H 13#define LLVM_ABI_BREAKING_CHECKS_H 14 15/* Define to enable checks that alter the LLVM C++ ABI */ 16#define LLVM_ENABLE_ABI_BREAKING_CHECKS 0 17 18/* Define to enable reverse iteration of unordered llvm containers */ 19#define LLVM_ENABLE_REVERSE_ITERATION 0 20 21/* Allow selectively disabling link-time mismatch checking so that header-only 22 ADT content from LLVM can be used without linking libSupport. */ 23#if !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 24 25// ABI_BREAKING_CHECKS protection: provides link-time failure when clients build 26// mismatch with LLVM 27#if defined(_MSC_VER) 28// Use pragma with MSVC 29#define LLVM_XSTR(s) LLVM_STR(s) 30#define LLVM_STR(s) #s 31#pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS)) 32#undef LLVM_XSTR 33#undef LLVM_STR 34#elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch 35// FIXME: Implement checks without weak. 36#elif defined(__cplusplus) 37namespace llvm { 38#if LLVM_ENABLE_ABI_BREAKING_CHECKS 39extern int EnableABIBreakingChecks; 40__attribute__((weak, visibility ("hidden"))) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks; 41#else 42extern int DisableABIBreakingChecks; 43__attribute__((weak, visibility ("hidden"))) int *VerifyDisableABIBreakingChecks = &DisableABIBreakingChecks; 44#endif 45} 46#endif // _MSC_VER 47 48#endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 49 50#endif 51