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Diffstat (limited to 'src/serd_config.h')
| -rw-r--r-- | src/serd_config.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/serd_config.h b/src/serd_config.h new file mode 100644 index 00000000..0038a981 --- /dev/null +++ b/src/serd_config.h @@ -0,0 +1,115 @@ +/* + Copyright 2021 David Robillard <http://drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/* + Configuration header that defines reasonable defaults at compile time. + + This allows compile-time configuration from the command line (typically via + the build system) while still allowing the source to be built without any + configuration. The build system can define SERD_NO_DEFAULT_CONFIG to disable + defaults, in which case it must define things like HAVE_FEATURE to enable + features. The design here ensures that compiler warnings or + include-what-you-use will catch any mistakes. +*/ + +#ifndef SERD_CONFIG_H +#define SERD_CONFIG_H + +// Define version unconditionally so a warning will catch a mismatch +#define SERD_VERSION "0.30.7" + +#if !defined(SERD_NO_DEFAULT_CONFIG) + +// We need unistd.h to check _POSIX_VERSION +# ifndef SERD_NO_POSIX +# ifdef __has_include +# if __has_include(<unistd.h>) +# include <unistd.h> +# endif +# elif defined(__unix__) +# include <unistd.h> +# endif +# endif + +// C99 and C++11: aligned_alloc() +# ifndef HAVE_ALIGNED_ALLOC +# if !defined(__APPLE__) && !defined(_WIN32) +# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L +# define HAVE_ALIGNED_ALLOC +# elif defined(__cplusplus) && __cplusplus >= 201103L) +# define HAVE_ALIGNED_ALLOC +# endif +# endif +# endif + +// POSIX.1-2001: fileno() +# ifndef HAVE_FILENO +# if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L +# define HAVE_FILENO +# endif +# endif + +// POSIX.1-2001: posix_fadvise() +# ifndef HAVE_POSIX_FADVISE +# ifndef __APPLE__ +# if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L +# define HAVE_POSIX_FADVISE +# endif +# endif +# endif + +// POSIX.1-2001: posix_memalign() +# ifndef HAVE_POSIX_MEMALIGN +# if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L +# define HAVE_POSIX_MEMALIGN +# endif +# endif + +#endif // !defined(SERD_NO_DEFAULT_CONFIG) + +/* + Make corresponding USE_FEATURE defines based on the HAVE_FEATURE defines from + above or the command line. The code checks for these using #if (not #ifdef), + so there will be an undefined warning if it checks for an unknown feature, + and this header is always required by any code that checks for features, even + if the build system defines them all. +*/ + +#ifdef HAVE_ALIGNED_ALLOC +# define USE_ALIGNED_ALLOC 1 +#else +# define USE_ALIGNED_ALLOC 0 +#endif + +#ifdef HAVE_FILENO +# define USE_FILENO 1 +#else +# define USE_FILENO 0 +#endif + +#ifdef HAVE_POSIX_FADVISE +# define USE_POSIX_FADVISE 1 +#else +# define USE_POSIX_FADVISE 0 +#endif + +#ifdef HAVE_POSIX_MEMALIGN +# define USE_POSIX_MEMALIGN 1 +#else +# define USE_POSIX_MEMALIGN 0 +#endif + +#endif // SERD_CONFIG_H |