(selection-coding-system): Fix docstring.

[gnu-emacs] / src / s / aix3-2-5.h

diff --git a/src/s/aix3-2-5.h b/src/s/aix3-2-5.h
index 7490b27abd9dd0f9bd8a8f3f0b875e31fb025474..6c8458cc8a4c3302c4508ded566799b9d68e4b7d 100644 (file)
--- a/src/s/aix3-2-5.h
+++ b/src/s/aix3-2-5.h
@@ -5,12 +5,13 @@
 /* For AIX, it turns out compiling emacs under AIX 3.2.4 REQUIRES "cc -g"
    because "cc -O" crashes. Under AIX 3.2.5, "cc -O" is required because
    "cc -g" crashes. Go figure.  --floppy@merlin.mit.edu */
-#ifndef __GNUC__
+/* The above isn't generally true.  If it occurs with some compiler
+   release, seek a fixed version, be it XLC or GCC.  The XLC version
+   isn't tied to the OS version on AIX any more than elsewhere.  XLC
+   (the IBM compiler) can use -g with -O.  (-O3 is also a possibility
+   for the optimization level.)  -- fx, after David Edelsohn.  */
 #undef C_DEBUG_SWITCH
-#undef C_OPTIMIZE_SWITCH
-#define C_DEBUG_SWITCH -O
-#define C_OPTIMIZE_SWITCH -O
-#endif
+#define C_DEBUG_SWITCH -g -O
 
 /* Perry Smith <pedz@ddivt1.austin.ibm.com> says these are correct.  */
 #define SIGNALS_VIA_CHARACTERS
@@ -27,3 +28,6 @@
 /* Bill Woodward <wpwood@austin.ibm.com> says:
    libIM *must* precede libXm, to avoid getting aixLoadIM error messages.  */
 #define LIB_MOTIF -lIM -lXm
+
+/* arch-tag: 692b3acb-5383-4cfb-93f6-378b5c48c75e
+   (do not change this comment) */