gcc.c (spec_function): Add remove-outfile.

2010-08-17  Jack Howarth <howarth@bromo.med.uc.edu>

	* gcc.c (spec_function): Add remove-outfile.
	(remove_outfile_spec_function): New function.
	* config/darwin.h (LINK_SPEC): Add removal of
	-ldl, -lm and -lpthread.
	* invoke.texi (replace-outfile): Document.

From-SVN: r163305

1 files changed, 23 insertions, 0 deletions

diff --git a/gcc/gcc.c b/gcc/gcc.c
index c2c87fe..a96d497 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -317,6 +317,7 @@ static const char *getenv_spec_function (int, const char **);
 static const char *if_exists_spec_function (int, const char **);
 static const char *if_exists_else_spec_function (int, const char **);
 static const char *replace_outfile_spec_function (int, const char **);
+static const char *remove_outfile_spec_function (int, const char **);
 static const char *version_compare_spec_function (int, const char **);
 static const char *include_spec_function (int, const char **);
 static const char *find_file_spec_function (int, const char **);
@@ -1615,6 +1616,7 @@ static const struct spec_function static_spec_functions[] =
   { "if-exists",		if_exists_spec_function },
   { "if-exists-else",		if_exists_else_spec_function },
   { "replace-outfile",		replace_outfile_spec_function },
+  { "remove-outfile",		remove_outfile_spec_function },
   { "version-compare",		version_compare_spec_function },
   { "include",			include_spec_function },
   { "find-file",		find_file_spec_function },
@@ -8274,6 +8276,27 @@ replace_outfile_spec_function (int argc, const char **argv)
   return NULL;
 }
 
+/* remove-outfile built-in spec function.
+ *
+ *    This looks for the first argument in the outfiles array's name and
+ *       removes it.  */
+
+static const char *
+remove_outfile_spec_function (int argc, const char **argv)
+{
+  int i;
+  /* Must have exactly one argument.  */
+  if (argc != 1)
+    abort ();
+
+  for (i = 0; i < n_infiles; i++)
+    {
+      if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
+        outfiles[i] = NULL;
+    }
+  return NULL;
+}
+
 /* Given two version numbers, compares the two numbers.
    A version number must match the regular expression
    ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*