Shared Source CLI Essentials

PAL and Platform Macros

The Unix PAL and the portions of the build that contain non-Windows code use a set of macros to probe for platform configuration. They are defined when a host operating system implements particular features, detailed and described in pal/unix/configure.in. These #defines include:

_PPC_

This is defined when compiling for Motorola PowerPC.

_X86_

This is defined when compiling for Intel x86.

BIGENDIAN

This is defined on big-endian platforms, and undefined on little-endian platforms.

HAVE_CASE_SENSITIVE_FILESYSTEM

This macro is defined to differentiate filesystems that are case-sensitive, such as FreeBSD, from filesystems that are case-insensitive, such as Windows or HFS+, the default and most frequently used Mac OS X filesystem.

HAVE_CFSTRING

This is defined if Mac OS X CoreFoundation CFString is present.

HAVE_COMPATIBLE_ASIN

HAVE_COMPATIBLE_ACOS

HAVE_COMPATIBLE_*

This is defined when C runtime math functions produce Windows-compatible results for edge-case values.

HAVE_POLL

This is defined if the poll( ) system call is implemented.

HAVE_STRTOK_R

This is defined if the strok_r( ) API is implemented.

MMAP_IGNORES_HINT

This is set when the mmap( ) system call ignores its hint argument.

PAL_TRY

PAL_EXCEPT

PAL_EXCEPT_EX

PAL_EXCEPT_FILTER

PAL_EXCEPT_FILTER_EX

PAL_FINALLY

PAL_FINALLY_EX

PAL_ENDTRY

The file pal/rotor_pal.h contains the API definitions for the PAL, as well as these macros, which result in calls against the PAL’s exception-handling ...