improved patch to fix a POSIX compliance bug in gcc.c

[Jens Schweikhardt <schweikh at schweikhardt dot net>]

hello, world\n
  
once again an improvement (not to the C code) but an added
ChangeLog entry plus a patch for the texinfo doc. I hope this
satifies the requirements to get this patch committed. If there
is something wrong with it or missing *please* let me know.
  
Regards,
  
        Jens

ChangeLog:

 * gcc.c (process_command): Allow -l lib in addition to -llib
   for POSIX compliance.

 * invoke.texi: update section on Link Options accordingly.

--- gcc.c.orig	Fri Feb  9 22:22:06 2001
+++ gcc.c	Sat Feb 10 09:50:47 2001
@@ -3290,6 +3290,14 @@
 	  n_infiles++;
 	  i++;
 	}
+      else if (strcmp (argv[i], "-l") == 0)
+	{
+	  if (i + 1 == argc)
+	    fatal ("argument to `-l' is missing");
+
+	  n_infiles++;
+	  i++;
+	}
       else if (strncmp (argv[i], "-l", 2) == 0)
 	n_infiles++;
       else if (strcmp (argv[i], "-save-temps") == 0)
@@ -3730,6 +3738,14 @@
 	{
 	  infiles[n_infiles].language = "*";
 	  infiles[n_infiles++].name = argv[++i];
+	}
+      else if (strcmp (argv[i], "-l") == 0)
+	{ /* POSIX allows separation of -l and the lib arg;
+	     canonicalize by concatenating -l with its arg */
+	  register char *libarg = xmalloc (3 + strlen (argv[++i]));
+	  sprintf (libarg, "-l%s", argv[i]);
+	  infiles[n_infiles].language = "*";
+	  infiles[n_infiles++].name = libarg;
 	}
       else if (strncmp (argv[i], "-l", 2) == 0)
 	{




--- invoke.texi.old	Sun Mar  4 18:25:35 2001
+++ invoke.texi	Sun Mar  4 18:52:17 2001
@@ -3604,10 +3604,13 @@
 
 @cindex Libraries
 @item -l@var{library}
-Search the library named @var{library} when linking.
+@itemx -l @var{library}
+Search the library named @var{library} when linking.  (The second
+alternative with the library as a separate argument is only for
+POSIX compliance and is not recommended.)
 
 It makes a difference where in the command you write this option; the
-linker searches processes libraries and object files in the order they
+linker searches and processes libraries and object files in the order they
 are specified.  Thus, @samp{foo.o -lz bar.o} searches library @samp{z}
 after file @file{foo.o} but before @file{bar.o}.  If @file{bar.o} refers
 to functions in @samp{z}, those functions may not be loaded.