diff options
Diffstat (limited to 'programs/platform.h')
| -rw-r--r-- | programs/platform.h | 81 |
1 files changed, 63 insertions, 18 deletions
diff --git a/programs/platform.h b/programs/platform.h index c86d289f5414..155ebcd1eb9c 100644 --- a/programs/platform.h +++ b/programs/platform.h @@ -50,53 +50,70 @@ extern "C" { /* ********************************************************* * Turn on Large Files support (>4GB) for 32-bit Linux/Unix ***********************************************************/ -#if !defined(__64BIT__) || defined(__MINGW32__) /* No point defining Large file for 64 bit but MinGW-w64 requires it */ +#if !defined(__64BIT__) || defined(__MINGW32__) /* No point defining Large file for 64 bit but MinGW-w64 requires it */ # if !defined(_FILE_OFFSET_BITS) -# define _FILE_OFFSET_BITS 64 /* turn off_t into a 64-bit type for ftello, fseeko */ +# define _FILE_OFFSET_BITS 64 /* turn off_t into a 64-bit type for ftello, fseeko */ # endif -# if !defined(_LARGEFILE_SOURCE) /* obsolete macro, replaced with _FILE_OFFSET_BITS */ -# define _LARGEFILE_SOURCE 1 /* Large File Support extension (LFS) - fseeko, ftello */ +# if !defined(_LARGEFILE_SOURCE) /* obsolete macro, replaced with _FILE_OFFSET_BITS */ +# define _LARGEFILE_SOURCE 1 /* Large File Support extension (LFS) - fseeko, ftello */ # endif # if defined(_AIX) || defined(__hpux) -# define _LARGE_FILES /* Large file support on 32-bits AIX and HP-UX */ +# define _LARGE_FILES /* Large file support on 32-bits AIX and HP-UX */ # endif #endif /* ************************************************************ * Detect POSIX version -* PLATFORM_POSIX_VERSION = -1 for non-Unix e.g. Windows -* PLATFORM_POSIX_VERSION = 0 for Unix-like non-POSIX -* PLATFORM_POSIX_VERSION >= 1 is equal to found _POSIX_VERSION +* PLATFORM_POSIX_VERSION = 0 for non-Unix e.g. Windows +* PLATFORM_POSIX_VERSION = 1 for Unix-like but non-POSIX +* PLATFORM_POSIX_VERSION > 1 is equal to found _POSIX_VERSION +* Value of PLATFORM_POSIX_VERSION can be forced on command line ***************************************************************/ -#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)) /* UNIX-like OS */ \ - || defined(__midipix__) || defined(__VMS)) +#ifndef PLATFORM_POSIX_VERSION + # if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \ || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */ + /* exception rule : force posix version to 200112L, + * note: it's better to use unistd.h's _POSIX_VERSION whenever possible */ # define PLATFORM_POSIX_VERSION 200112L -# else + +/* try to determine posix version through official unistd.h's _POSIX_VERSION (http://pubs.opengroup.org/onlinepubs/7908799/xsh/unistd.h.html). + * note : there is no simple way to know in advance if <unistd.h> is present or not on target system, + * Posix specification mandates its presence and its content, but target system must respect this spec. + * It's necessary to _not_ #include <unistd.h> whenever target OS is not unix-like + * otherwise it will block preprocessing stage. + * The following list of build macros tries to "guess" if target OS is likely unix-like, and therefore can #include <unistd.h> + */ +# elif !defined(_WIN32) \ + && (defined(__unix__) || defined(__unix) \ + || defined(__midipix__) || defined(__VMS) || defined(__HAIKU__)) + # if defined(__linux__) || defined(__linux) # ifndef _POSIX_C_SOURCE -# define _POSIX_C_SOURCE 200112L /* use feature test macro */ +# define _POSIX_C_SOURCE 200112L /* feature test macro : https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html */ # endif # endif # include <unistd.h> /* declares _POSIX_VERSION */ # if defined(_POSIX_VERSION) /* POSIX compliant */ # define PLATFORM_POSIX_VERSION _POSIX_VERSION # else -# define PLATFORM_POSIX_VERSION 0 +# define PLATFORM_POSIX_VERSION 1 # endif + +# else /* non-unix target platform (like Windows) */ +# define PLATFORM_POSIX_VERSION 0 # endif -#endif -#if !defined(PLATFORM_POSIX_VERSION) -# define PLATFORM_POSIX_VERSION -1 -#endif +#endif /* PLATFORM_POSIX_VERSION */ /*-********************************************* * Detect if isatty() and fileno() are available ************************************************/ -#if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 1)) || (PLATFORM_POSIX_VERSION >= 200112L) || defined(__DJGPP__) +#if (defined(__linux__) && (PLATFORM_POSIX_VERSION > 1)) \ + || (PLATFORM_POSIX_VERSION >= 200112L) \ + || defined(__DJGPP__) \ + || defined(__MSYS__) # include <unistd.h> /* isatty */ # define IS_CONSOLE(stdStream) isatty(fileno(stdStream)) #elif defined(MSDOS) || defined(OS2) || defined(__CYGWIN__) @@ -145,6 +162,34 @@ static __inline int IS_CONSOLE(FILE* stdStream) { #endif +#ifndef ZSTD_START_SYMBOLLIST_FRAME +# ifdef __linux__ +# define ZSTD_START_SYMBOLLIST_FRAME 2 +# elif defined __APPLE__ +# define ZSTD_START_SYMBOLLIST_FRAME 4 +# else +# define ZSTD_START_SYMBOLLIST_FRAME 0 +# endif +#endif + + +#ifndef ZSTD_SETPRIORITY_SUPPORT + /* mandates presence of <sys/resource.h> and support for setpriority() : http://man7.org/linux/man-pages/man2/setpriority.2.html */ +# define ZSTD_SETPRIORITY_SUPPORT (PLATFORM_POSIX_VERSION >= 200112L) +#endif + + +#ifndef ZSTD_NANOSLEEP_SUPPORT + /* mandates support of nanosleep() within <time.h> : http://man7.org/linux/man-pages/man2/nanosleep.2.html */ +# if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) \ + || (PLATFORM_POSIX_VERSION >= 200112L) +# define ZSTD_NANOSLEEP_SUPPORT 1 +# else +# define ZSTD_NANOSLEEP_SUPPORT 0 +# endif +#endif + + #if defined (__cplusplus) } #endif |