gcc.h (DEFAULT_WORD_SWITCH_TAKES_ARG): Add isysroot.

        PR/18555
        * gcc.h (DEFAULT_WORD_SWITCH_TAKES_ARG): Add isysroot.
        * config/darwin-c.c (darwin_register_frameworks): Use sysroot.

        testsuite
        * gcc.dg/cpp/isysroot-1.c: New test.
        * gcc.dg/cpp/usr/include/stdio.h: New file.
        * gcc.dg/cpp/isysroot-2.c: New test.
        * gcc.dg/cpp/System/Library/Framework/Carbon.framework/Headers/Carbon.h:
        New file.

From-SVN: r91178

gcc/ChangeLog

 2004-11-24  Devang Patel  <dpatel@apple.com>
 
+	PR/18555
+	* gcc.h (DEFAULT_WORD_SWITCH_TAKES_ARG): Add isysroot.
+	* config/darwin-c.c (darwin_register_frameworks): Use sysroot.
+
+2004-11-24  Devang Patel  <dpatel@apple.com>
+
 	* gcc.c (process_command): Supply -v to linker.
 	
 2004-11-24  David Edelsohn  <edelsohn@gnu.org>

gcc/config/darwin-c.c

@@ -468,7 +468,7 @@ darwin_register_objc_includes (const char *sysroot, const char *iprefix,
    frameworks had been registered.  */
 
 void
-darwin_register_frameworks (const char *sysroot ATTRIBUTE_UNUSED,
+darwin_register_frameworks (const char *sysroot,
 			    const char *iprefix ATTRIBUTE_UNUSED, int stdinc)
 {
   if (stdinc)
@@ -478,8 +478,13 @@ darwin_register_frameworks (const char *sysroot ATTRIBUTE_UNUSED,
       /* Setup default search path for frameworks.  */
       for (i=0; i<sizeof (framework_defaults)/sizeof(const char *); ++i)
 	{
+	  char *str;
+	  if (sysroot)
+	    str = concat (sysroot, xstrdup (framework_defaults [i]), NULL);
+	  else
+	    str = xstrdup (framework_defaults[i]);
 	  /* System Framework headers are cxx aware.  */
-	  add_system_framework_path (xstrdup (framework_defaults[i]));
+	  add_system_framework_path (str);
 	}
     }
 

gcc/gcc.h

@@ -49,6 +49,7 @@ struct spec_function
   || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
   || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
   || !strcmp (STR, "iquote") || !strcmp (STR, "isystem") \
+  || !strcmp (STR, "isysroot") \
   || !strcmp (STR, "-param") || !strcmp (STR, "specs") \
   || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
 

gcc/testsuite/ChangeLog

+2004-11-24  Devang Patel  <dpatel@apple.com>
+
+	PR/18555
+	* gcc.dg/cpp/isysroot-1.c: New test.
+	* gcc.dg/cpp/usr/include/stdio.h: New file.
+	* gcc.dg/cpp/isysroot-2.c: New test.
+	* gcc.dg/cpp/System/Library/Framework/Carbon.framework/Headers/Carbon.h:
+	New file.
+
 2004-11-24  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
 
 	PR c++/8929

gcc/testsuite/gcc.dg/cpp/System/Library/Frameworks/Carbon.framework/Headers/Carbon.h

+/* Used by gcc.dg/cpp/isysroot-2.c to test isysroot.  */
+void foo()
+{
+}

gcc/testsuite/gcc.dg/cpp/isysroot-1.c

+/* { dg-options "-isysroot ${srcdir}/gcc.dg/cpp" } */
+/* { dg-do compile } */
+
+#include <stdio.h>
+int main()
+{
+  /* Special stdio.h supplies function foo.  */
+  void (*x)(void) = foo;
+  return 0;
+}

gcc/testsuite/gcc.dg/cpp/isysroot-2.c

+/* { dg-options "-isysroot ${srcdir}/gcc.dg/cpp" { target *-*-darwin* } } */
+/* { dg-do compile } */
+
+#include <Carbon/Carbon.h>
+int main()
+{
+  /* Special Carbon.h supplies function foo.  */
+  void (*x)(void) = foo;
+  return 0;
+}

gcc/testsuite/gcc.dg/cpp/usr/include/stdio.h

+/* Used by gcc.dg/cpp/isysroot-1.c to test isysroot.  */
+void foo()
+{
+}