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1234bb1850
Update to newest recommended license notices from the FSF. Everything stays LGPLv3+ except guile-readline which is GPLv3+.
96 lines
3.5 KiB
C
96 lines
3.5 KiB
C
#ifndef SCM_INLINE_H
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#define SCM_INLINE_H
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/* Copyright 2001-2004,2006,2008-2013,2018
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Free Software Foundation, Inc.
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This file is part of Guile.
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Guile is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Guile is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Guile. If not, see
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<https://www.gnu.org/licenses/>. */
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/* This file is for inline functions. On platforms that don't support
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inlining functions, they are turned into ordinary functions. On
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platforms that do support inline functions, the definitions are still
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compiled into the library, once, in inline.c. */
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#include "libguile/scm.h"
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/* Define SCM_C_INLINE_KEYWORD so that it can be used as a replacement
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for the "inline" keyword, expanding to nothing when "inline" is not
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available.
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*/
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#ifdef SCM_C_INLINE
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#define SCM_C_INLINE_KEYWORD SCM_C_INLINE
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#else
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#define SCM_C_INLINE_KEYWORD
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#endif
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/* We would like gnu89 extern inline semantics, not C99 extern inline
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semantics, so that we can be sure to avoid reifying definitions of
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inline functions in all compilation units, which is a possibility at
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low optimization levels, or if a user takes the address of an inline
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function.
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Hence the `__gnu_inline__' attribute, in accordance with:
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http://gcc.gnu.org/gcc-4.3/porting_to.html .
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With GCC 4.2, `__GNUC_STDC_INLINE__' is never defined (because C99 inline
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semantics are not supported), but a warning is issued in C99 mode if
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`__gnu_inline__' is not used.
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Apple's GCC build >5400 (since Xcode 3.0) doesn't support GNU inline in
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C99 mode and doesn't define `__GNUC_STDC_INLINE__'. Fall back to "static
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inline" in that case. */
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# if (defined __GNUC__) && (!(((defined __APPLE_CC__) && (__APPLE_CC__ > 5400)) && __STDC_VERSION__ >= 199901L))
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# if (defined __GNUC_STDC_INLINE__) || (__GNUC__ == 4 && __GNUC_MINOR__ == 2)
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# define SCM_C_EXTERN_INLINE \
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extern __inline__ __attribute__ ((__gnu_inline__))
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# else
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# define SCM_C_EXTERN_INLINE extern __inline__
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# endif
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# endif
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/* SCM_INLINE is a macro prepended to all public inline function
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declarations. Implementations of those functions should also be in
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the header file, prefixed by SCM_INLINE_IMPLEMENTATION, and protected
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by SCM_CAN_INLINE. Non-inline definitions will be reified into
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inline.c. See strings.h for an example usage, for scm_is_string. */
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#if defined SCM_IMPLEMENT_INLINES
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/* Reifying functions to a file, whether or not inlining is available. */
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# define SCM_CAN_INLINE 0
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# define SCM_INLINE SCM_API
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# define SCM_INLINE_IMPLEMENTATION
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#elif defined SCM_C_INLINE
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/* Declarations when inlining is available. */
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# define SCM_CAN_INLINE 1
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# ifdef SCM_C_EXTERN_INLINE
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# define SCM_INLINE SCM_C_EXTERN_INLINE
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# else
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/* Fall back to static inline if GNU "extern inline" is unavailable. */
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# define SCM_INLINE static SCM_C_INLINE
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# endif
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# define SCM_INLINE_IMPLEMENTATION SCM_INLINE
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#else
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/* Declarations when inlining is not available. */
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# define SCM_CAN_INLINE 0
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# define SCM_INLINE SCM_API
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/* Don't define SCM_INLINE_IMPLEMENTATION; it should never be seen in
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this case. */
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#endif
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#endif /* SCM_INLINE_H */
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