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emacs/admin/CPP-DEFINES
2007-12-14 12:41:12 +00:00

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Here are some of the cpp macros used, together with some short explanation
of their use. Feel free to add more macros and more categories.
** Distinguishing OSes **
MAC_OS Compiling for some version of Mac OS?
MAC_OS8 Compiling for Mac OS version 8. Requires MAC_OS?
MAC_OSX Compiling for Mac OS X? Is that also valid for Darwin?
MAC_OS_X ?? Apparently only used once in mac.c.
CYGWIN Compiling the Cygwin port.
__CYGWIN__ Ditto
MSDOS Compiling the MS-DOS port.
__MSDOS__ Ditto.
__DJGPP__ Major version number of the DJGPP library for the DOS port.
__DJGPP_MINOR__ Minor version number of the DJGPP library.
__GO32__ Compiling the DOS port with DJGPP v1.x (obsolete).
DOS_NT Compiling for either the MS-DOS or native MS-Windows port.
WINDOWSNT Compiling the native MS-Windows (W32) port.
__MINGW32__ Compiling the W32 port with the MinGW port of GCC.
_MSC_VER Compiling the W32 port with the Microsoft C compiler.
** Distinguishing GUIs **
HAVE_NTGUI Use the native W32 GUI for windows, frames, menus&scrollbars.
HAVE_CARBON Compile support for the Carbon GUI. Requires MAC_OS?
HAVE_X11 Compile support for the X11 GUI.
HAVE_X_WINDOWS Compile support for X Window system
X11 ?? Makefile.in suggests it's equivalent to HAVE_X11
USE_LUCID Use the Lucid toolkit for menus&scrollbars. Requires HAVE_X11.
USE_MOTIF Use the Motif toolkit for menus&scrollbars. Requires HAVE_X11.
USE_GTK Use the Gtk toolkit for menus&scrollbars. Requires HAVE_X11.
** Frame types **
FRAME_TERMCAP_P A tty (character terminal) frame.
FRAME_X_P A frame on X Window system.
FRAME_MSDOS_P An MS-DOS frame (used only by the DOS port).
FRAME_MAC_P A Mac frame.
FRAME_W32_P A frame using native MS-Windows GUI.
FRAME_WINDOW_P A GUI frame (like X, w32, etc.)
** Compile-time options **
REL_ALLOC Compile in the relocatable memory allocator ralloc.c.
SYSTEM_MALLOC Use the system library's malloc.
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