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) 37 namespace llvm { 38 #if LLVM_ENABLE_ABI_BREAKING_CHECKS 39 extern int EnableABIBreakingChecks; 40 __attribute__((weak, visibility ("hidden"))) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks; 41 #else 42 extern 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