Node:Version Supported, Next:Sysconf, Previous:System Options, Up:System Configuration
long int _POSIX_VERSION | Macro |
This constant represents the version of the POSIX.1 standard to which
the implementation conforms. For an implementation conforming to the
1995 POSIX.1 standard, the value is the integer 199506L .
Usage Note: Don't try to test whether the system supports POSIX
by including The GNU C compiler predefines the symbol |
long int _POSIX2_C_VERSION | Macro |
This constant represents the version of the POSIX.2 standard which the
library and system kernel support. We don't know what value this will
be for the first version of the POSIX.2 standard, because the value is
based on the year and month in which the standard is officially adopted.
The value of this symbol says nothing about the utilities installed on the system. Usage Note: You can use this macro to tell whether a POSIX.1
system library supports POSIX.2 as well. Any POSIX.1 system contains
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