diff options
Diffstat (limited to 'utils/bazel/llvm_configs/abi-breaking.h.cmake')
| -rw-r--r-- | utils/bazel/llvm_configs/abi-breaking.h.cmake | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/utils/bazel/llvm_configs/abi-breaking.h.cmake b/utils/bazel/llvm_configs/abi-breaking.h.cmake index 2d27e02..330f360 100644 --- a/utils/bazel/llvm_configs/abi-breaking.h.cmake +++ b/utils/bazel/llvm_configs/abi-breaking.h.cmake @@ -12,12 +12,41 @@ #ifndef LLVM_ABI_BREAKING_CHECKS_H #define LLVM_ABI_BREAKING_CHECKS_H +// llvm-config.h is required for LLVM_ENABLE_LLVM_EXPORT_ANNOTATIONS +#include "llvm/Config/llvm-config.h" + /* Define to enable checks that alter the LLVM C++ ABI */ #cmakedefine01 LLVM_ENABLE_ABI_BREAKING_CHECKS /* Define to enable reverse iteration of unordered llvm containers */ #cmakedefine01 LLVM_ENABLE_REVERSE_ITERATION +#if !defined(__has_attribute) +#define __has_attribute(attribute) 0 +#endif + +// Properly annotate EnableABIBreakingChecks or DisableABIBreakingChecks for +// export from shared library. +// TODO(https://github.com/llvm/llvm-project/issues/145406): eliminate need for +// two preprocessor definitions to gate LLVM_ABI macro definitions. +#if defined(LLVM_BUILD_STATIC) || !defined(LLVM_ENABLE_LLVM_EXPORT_ANNOTATIONS) +#define ABI_BREAKING_EXPORT_ABI +#else +#if defined(_WIN32) +#if defined(LLVM_EXPORTS) +#define ABI_BREAKING_EXPORT_ABI __declspec(dllexport) +#else +#define ABI_BREAKING_EXPORT_ABI __declspec(dllimport) +#endif +#else +#if __has_attribute(visibility) +#define ABI_BREAKING_EXPORT_ABI __attribute__((__visibility__("default"))) +#else +#define ABI_BREAKING_EXPORT_ABI +#endif +#endif +#endif + /* Allow selectively disabling link-time mismatch checking so that header-only ADT content from LLVM can be used without linking libSupport. */ #if !defined(LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING) || !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING @@ -43,12 +72,12 @@ #endif namespace llvm { #if LLVM_ENABLE_ABI_BREAKING_CHECKS -extern int EnableABIBreakingChecks; +ABI_BREAKING_EXPORT_ABI extern int EnableABIBreakingChecks; LLVM_HIDDEN_VISIBILITY __attribute__((weak)) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks; #else -extern int DisableABIBreakingChecks; +ABI_BREAKING_EXPORT_ABI extern int DisableABIBreakingChecks; LLVM_HIDDEN_VISIBILITY __attribute__((weak)) int *VerifyDisableABIBreakingChecks = &DisableABIBreakingChecks; |