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