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portability macro flags updates, for Haiku

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some non-trivial changes to platform.h and util.h,
initially related to compilation for Haiku,
but I used this opportunity to make them cleaner
and add some documentation.

Noticed several tests that could be improved
(too harsh conditions, useless exception, etc.)
but I did not dare modifying too many tests just before release.
This commit is contained in:
Yann Collet
2018-10-03 14:54:33 -07:00
parent bc93b801f0
commit 549c19b42e
2 changed files with 66 additions and 31 deletions
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58
programs/platform.h
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@ -65,39 +65,52 @@ extern "C" {
/* ************************************************************
* 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) || defined(__HAIKU__))
#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 */ \
|| defined(__HAIKU__)
|| 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
# endif
#endif
#if !defined(PLATFORM_POSIX_VERSION)
# define PLATFORM_POSIX_VERSION -1
#endif
# else /* non-unix target platform (like Windows) */
# define PLATFORM_POSIX_VERSION 0
# endif
#endif /* PLATFORM_POSIX_VERSION */
/*-*********************************************
* Detect if isatty() and fileno() are available
************************************************/
#if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 1)) \
#if (defined(__linux__) && (PLATFORM_POSIX_VERSION > 1)) \
|| (PLATFORM_POSIX_VERSION >= 200112L) \
|| defined(__DJGPP__) \
|| defined(__MSYS__)
@ -160,6 +173,19 @@ static __inline int IS_CONSOLE(FILE* stdStream) {
#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 */
# define ZSTD_NANOSLEEP_SUPPORT (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) \
|| (PLATFORM_POSIX_VERSION >= 200112L)
#endif
#if defined (__cplusplus)
}
#endif