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[libc] Support configurable errno modes (#98287)
Rather than selecting the errno implementation based on the platform which doesn't provide the necessary flexibility, make it configurable. The errno value location is returned by `int *__llvm_libc_errno()` which is a common design used by other C libraries.
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Original file line number | Diff line number | Diff line change |
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//===-- Implementation header for errno -------------------------*- C++ -*-===// | ||
// | ||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
// See https://llvm.org/LICENSE.txt for license information. | ||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#ifndef LLVM_LIBC_SRC_ERRNO_ERRNO_H | ||
#define LLVM_LIBC_SRC_ERRNO_ERRNO_H | ||
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extern "C" int *__llvm_libc_errno(); | ||
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#endif // LLVM_LIBC_SRC_ERRNO_ERRNO_H |
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