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 /* Define to disable the link-time checking of mismatch for 20 LLVM_ENABLE_ABI_BREAKING_CHECKS */ 21 #define LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 0 22 #if !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 23 24 // ABI_BREAKING_CHECKS protection: provides link-time failure when clients build 25 // mismatch with LLVM 26 #if defined(_MSC_VER) 27 // Use pragma with MSVC 28 #define LLVM_XSTR(s) LLVM_STR(s) 29 #define LLVM_STR(s) #s 30 #pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS)) 31 #undef LLVM_XSTR 32 #undef LLVM_STR 33 #elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch 34 // FIXME: Implement checks without weak. 35 #elif defined(__cplusplus) 36 namespace llvm { 37 #if LLVM_ENABLE_ABI_BREAKING_CHECKS 38 extern int EnableABIBreakingChecks; 39 __attribute__((weak, visibility ("hidden"))) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks; 40 #else 41 extern int DisableABIBreakingChecks; 42 __attribute__((weak, visibility ("hidden"))) int *VerifyDisableABIBreakingChecks = &DisableABIBreakingChecks; 43 #endif 44 } 45 #endif // _MSC_VER 46 47 #endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 48 49 #endif 50