* coff-mips.c (mips_relocate_section): Don't convert a reloc

[deliverable/binutils-gdb.git] / readline / sysdep-norm.h

diff --git a/readline/sysdep-norm.h b/readline/sysdep-norm.h
index 158b50406eeb9c6110452556e9e812ff89e8c09a..cb89f437797bfc43d8de4f2cabc70c78a0385123 100644 (file)
--- a/readline/sysdep-norm.h
+++ b/readline/sysdep-norm.h
@@ -1,4 +1,10 @@
 /* System-dependent stuff, for ``normal'' systems */
+/* If you think you need to change this file, then you are wrong.  In order to
+   avoid a huge ugly mass of nested #ifdefs, you should create a new file just
+   for your system, which contains exactly those #includes and definitions that
+   your system needs, AND NOTHING MORE!  Then, add that file to the appropriate
+   place in configure.in, and viola, you are done.  sysdep-sunos4.h is a good
+   example of how to do this. */
 
 #ifdef __GNUC__
 #define alloca __builtin_alloca
@@ -6,8 +12,10 @@
 #if defined (sparc) && defined (sun)
 #include <alloca.h>
 #endif
+#ifndef alloca                         /* May be a macro, with args. */
 extern char *alloca ();
 #endif
+#endif
 
 #include <sys/types.h>                 /* Needed by dirent.h */