107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/* ws_diag_control.h
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* Turn compiler diagnostic messages on and off.
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*
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* From FreeRADIUS build.h.
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*
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* @copyright 2013 The FreeRADIUS server project
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*
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* That project is covered by the GPLv2, so:
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __WS_DIAG_CONTROL_H__
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#define __WS_DIAG_CONTROL_H__
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#include "ws_compiler_tests.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define XSTRINGIFY(x) #x
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/*
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* Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
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*/
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#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y)
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#define DIAG_DO_PRAGMA(x) _Pragma (#x)
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#if defined(__clang__)
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/*
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* Clang, so we'd use _Pragma("clang diagnostic XXX"), if it's
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* supported.
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*/
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#if WS_IS_AT_LEAST_CLANG_VERSION(2,8)
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/*
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* This is Clang 2.8 or later: we can use "clang diagnostic ignored -Wxxx"
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* and "clang diagnostic push/pop".
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*/
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#define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x)
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#define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
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#define DIAG_ON(x) DIAG_PRAGMA(pop)
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#endif
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#elif defined(__GNUC__)
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/*
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* GCC, or a compiler (other than Clang) that claims to be GCC.
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* We assume that the compiler accepts _Pragma("GCC diagnostic xxx")
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* even if it's only claiming to be GCC.
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*/
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#if WS_IS_AT_LEAST_GNUC_VERSION(4,8)
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/*
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* This is GCC 4.8 or later, or a compiler claiming to be that.
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* We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2)
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* and "GCC diagnostic push/pop" (introduced in 4.6), *and* gcc
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* supports "-Wpedantic" (introduced in 4.8), allowing us to
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* turn off pedantic warnings with DIAG_OFF().
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*/
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#define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
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#define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
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#define DIAG_ON(x) DIAG_PRAGMA(pop)
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#endif
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#endif
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#ifndef DIAG_OFF
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/*
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* This is none of the above; we don't have any way to turn diagnostics
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* on or off.
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*
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* XXX - you can do that in MSVC, but it's done differently; we'd
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* have to have macros for *particular* diagnostics, using the
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* warning flag for GCC and Clang and the error number for MSVC.
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*/
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#define DIAG_OFF(x)
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#define DIAG_ON(x)
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#endif
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/* Use for clang specific pragmas, so we can keep -Wpragmas enabled */
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#ifdef __clang__
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# define DIAG_OFF_CLANG(x) DIAG_OFF(x)
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# define DIAG_ON_CLANG(x) DIAG_ON(x)
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#else
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# define DIAG_OFF_CLANG(x)
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# define DIAG_ON_CLANG(x)
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#endif
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/*
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* For dealing with APIs which are only deprecated in macOS (like the
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* OpenSSL and MIT/Heimdal Kerberos APIs).
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*
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* Dear Apple: this is a cross-platform program, and we're not
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* going to use your Shiny New Frameworks on macOS unless there's
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* a sufficiently clear benefit to make it worth our while to have
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* both macOS and non-macOS versions of the code.
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*/
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#ifdef __APPLE__
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# define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
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# define USES_APPLE_RST DIAG_ON(deprecated-declarations)
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#else
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# define USES_APPLE_DEPRECATED_API
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# define USES_APPLE_RST
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __WS_DIAG_CONTROL_H__ */
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