109bfd043SDimitry Andric /* $FreeBSD$ */ 209bfd043SDimitry Andric /*===------- llvm/Config/abi-breaking.h - llvm configuration -------*- C -*-===*/ 309bfd043SDimitry Andric /* */ 4*86aa9539SDimitry Andric /* Part of the LLVM Project, under the Apache License v2.0 with LLVM */ 5*86aa9539SDimitry Andric /* Exceptions. */ 6*86aa9539SDimitry Andric /* See https://llvm.org/LICENSE.txt for license information. */ 7*86aa9539SDimitry Andric /* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception */ 809bfd043SDimitry Andric /* */ 909bfd043SDimitry Andric /*===----------------------------------------------------------------------===*/ 1009bfd043SDimitry Andric 1109bfd043SDimitry Andric /* This file controls the C++ ABI break introduced in LLVM public header. */ 1209bfd043SDimitry Andric 1309bfd043SDimitry Andric #ifndef LLVM_ABI_BREAKING_CHECKS_H 1409bfd043SDimitry Andric #define LLVM_ABI_BREAKING_CHECKS_H 1509bfd043SDimitry Andric 1609bfd043SDimitry Andric /* Define to enable checks that alter the LLVM C++ ABI */ 1709bfd043SDimitry Andric #define LLVM_ENABLE_ABI_BREAKING_CHECKS 1 1809bfd043SDimitry Andric 19edd7eaddSDimitry Andric /* Define to enable reverse iteration of unordered llvm containers */ 20edd7eaddSDimitry Andric #define LLVM_ENABLE_REVERSE_ITERATION 0 21edd7eaddSDimitry Andric 225897d2f0SDimitry Andric /* Allow selectively disabling link-time mismatch checking so that header-only 235897d2f0SDimitry Andric ADT content from LLVM can be used without linking libSupport. */ 2409bfd043SDimitry Andric #if !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 2509bfd043SDimitry Andric 2609bfd043SDimitry Andric // ABI_BREAKING_CHECKS protection: provides link-time failure when clients build 2709bfd043SDimitry Andric // mismatch with LLVM 2809bfd043SDimitry Andric #if defined(_MSC_VER) 2909bfd043SDimitry Andric // Use pragma with MSVC 3009bfd043SDimitry Andric #define LLVM_XSTR(s) LLVM_STR(s) 3109bfd043SDimitry Andric #define LLVM_STR(s) #s 3209bfd043SDimitry Andric #pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS)) 3309bfd043SDimitry Andric #undef LLVM_XSTR 3409bfd043SDimitry Andric #undef LLVM_STR 3509bfd043SDimitry Andric #elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch 3609bfd043SDimitry Andric // FIXME: Implement checks without weak. 3709bfd043SDimitry Andric #elif defined(__cplusplus) 38*86aa9539SDimitry Andric #if !(defined(_AIX) && defined(__GNUC__) && !defined(__clang__)) 39*86aa9539SDimitry Andric #define LLVM_HIDDEN_VISIBILITY __attribute__ ((visibility("hidden"))) 40*86aa9539SDimitry Andric #else 41*86aa9539SDimitry Andric // GCC on AIX does not support visibility attributes. Symbols are not 42*86aa9539SDimitry Andric // exported by default on AIX. 43*86aa9539SDimitry Andric #define LLVM_HIDDEN_VISIBILITY 44*86aa9539SDimitry Andric #endif 4509bfd043SDimitry Andric namespace llvm { 4609bfd043SDimitry Andric #if LLVM_ENABLE_ABI_BREAKING_CHECKS 4709bfd043SDimitry Andric extern int EnableABIBreakingChecks; 48*86aa9539SDimitry Andric LLVM_HIDDEN_VISIBILITY 49*86aa9539SDimitry Andric __attribute__((weak)) int *VerifyEnableABIBreakingChecks = 50*86aa9539SDimitry Andric &EnableABIBreakingChecks; 5109bfd043SDimitry Andric #else 5209bfd043SDimitry Andric extern int DisableABIBreakingChecks; 53*86aa9539SDimitry Andric LLVM_HIDDEN_VISIBILITY 54*86aa9539SDimitry Andric __attribute__((weak)) int *VerifyDisableABIBreakingChecks = 55*86aa9539SDimitry Andric &DisableABIBreakingChecks; 5609bfd043SDimitry Andric #endif 5709bfd043SDimitry Andric } 58*86aa9539SDimitry Andric #undef LLVM_HIDDEN_VISIBILITY 5909bfd043SDimitry Andric #endif // _MSC_VER 6009bfd043SDimitry Andric 6109bfd043SDimitry Andric #endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 6209bfd043SDimitry Andric 6309bfd043SDimitry Andric #endif 64