109bfd043SDimitry Andric /*===------- llvm/Config/abi-breaking.h - llvm configuration -------*- C -*-===*/ 209bfd043SDimitry Andric /* */ 386aa9539SDimitry Andric /* Part of the LLVM Project, under the Apache License v2.0 with LLVM */ 486aa9539SDimitry Andric /* Exceptions. */ 586aa9539SDimitry Andric /* See https://llvm.org/LICENSE.txt for license information. */ 686aa9539SDimitry Andric /* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception */ 709bfd043SDimitry Andric /* */ 809bfd043SDimitry Andric /*===----------------------------------------------------------------------===*/ 909bfd043SDimitry Andric 1009bfd043SDimitry Andric /* This file controls the C++ ABI break introduced in LLVM public header. */ 1109bfd043SDimitry Andric 1209bfd043SDimitry Andric #ifndef LLVM_ABI_BREAKING_CHECKS_H 1309bfd043SDimitry Andric #define LLVM_ABI_BREAKING_CHECKS_H 1409bfd043SDimitry Andric 1509bfd043SDimitry Andric /* Define to enable checks that alter the LLVM C++ ABI */ 16*1c83996bSDimitry Andric #ifdef NDEBUG 17*1c83996bSDimitry Andric #define LLVM_ENABLE_ABI_BREAKING_CHECKS 0 18*1c83996bSDimitry Andric #else 1909bfd043SDimitry Andric #define LLVM_ENABLE_ABI_BREAKING_CHECKS 1 20*1c83996bSDimitry Andric #endif 2109bfd043SDimitry Andric 22edd7eaddSDimitry Andric /* Define to enable reverse iteration of unordered llvm containers */ 23edd7eaddSDimitry Andric #define LLVM_ENABLE_REVERSE_ITERATION 0 24edd7eaddSDimitry Andric 255897d2f0SDimitry Andric /* Allow selectively disabling link-time mismatch checking so that header-only 265897d2f0SDimitry Andric ADT content from LLVM can be used without linking libSupport. */ 27e8d8bef9SDimitry Andric #if !defined(LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING) || !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 2809bfd043SDimitry Andric 2909bfd043SDimitry Andric // ABI_BREAKING_CHECKS protection: provides link-time failure when clients build 3009bfd043SDimitry Andric // mismatch with LLVM 3109bfd043SDimitry Andric #if defined(_MSC_VER) 3209bfd043SDimitry Andric // Use pragma with MSVC 3309bfd043SDimitry Andric #define LLVM_XSTR(s) LLVM_STR(s) 3409bfd043SDimitry Andric #define LLVM_STR(s) #s 3509bfd043SDimitry Andric #pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS)) 3609bfd043SDimitry Andric #undef LLVM_XSTR 3709bfd043SDimitry Andric #undef LLVM_STR 3809bfd043SDimitry Andric #elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch 3909bfd043SDimitry Andric // FIXME: Implement checks without weak. 4009bfd043SDimitry Andric #elif defined(__cplusplus) 4186aa9539SDimitry Andric #if !(defined(_AIX) && defined(__GNUC__) && !defined(__clang__)) 4286aa9539SDimitry Andric #define LLVM_HIDDEN_VISIBILITY __attribute__ ((visibility("hidden"))) 4386aa9539SDimitry Andric #else 4486aa9539SDimitry Andric // GCC on AIX does not support visibility attributes. Symbols are not 4586aa9539SDimitry Andric // exported by default on AIX. 4686aa9539SDimitry Andric #define LLVM_HIDDEN_VISIBILITY 4786aa9539SDimitry Andric #endif 4809bfd043SDimitry Andric namespace llvm { 4909bfd043SDimitry Andric #if LLVM_ENABLE_ABI_BREAKING_CHECKS 5009bfd043SDimitry Andric extern int EnableABIBreakingChecks; 5186aa9539SDimitry Andric LLVM_HIDDEN_VISIBILITY 5286aa9539SDimitry Andric __attribute__((weak)) int *VerifyEnableABIBreakingChecks = 5386aa9539SDimitry Andric &EnableABIBreakingChecks; 5409bfd043SDimitry Andric #else 5509bfd043SDimitry Andric extern int DisableABIBreakingChecks; 5686aa9539SDimitry Andric LLVM_HIDDEN_VISIBILITY 5786aa9539SDimitry Andric __attribute__((weak)) int *VerifyDisableABIBreakingChecks = 5886aa9539SDimitry Andric &DisableABIBreakingChecks; 5909bfd043SDimitry Andric #endif 6009bfd043SDimitry Andric } 6186aa9539SDimitry Andric #undef LLVM_HIDDEN_VISIBILITY 6209bfd043SDimitry Andric #endif // _MSC_VER 6309bfd043SDimitry Andric 6409bfd043SDimitry Andric #endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 6509bfd043SDimitry Andric 6609bfd043SDimitry Andric #endif 67