[google/gcc-4_9] Add gcc driver option -no-pie

[Sriraman Tallam]

Hi,

   A build tool we are using adds -pie by default and I am adding
-no-pie to override this when necessary.

Is this patch alright?  Would this be suitable for trunk?

Thanks
Sri
-------------- next part --------------
Add a negative for option -pie: -no-pie builds a position dependent executable.
Note that -no-pie also negates a prior -shared.


Index: testsuite/gcc.dg/option_no-pie.c
===================================================================
--- testsuite/gcc.dg/option_no-pie.c	(revision 0)
+++ testsuite/gcc.dg/option_no-pie.c	(revision 0)
@@ -0,0 +1,7 @@
+/* { dg-do link { target pie } } */
+/* { dg-options "-no-pie" } */
+
+int main(void)
+{
+  return 0;
+}
Index: common.opt
===================================================================
--- common.opt	(revision 212826)
+++ common.opt	(working copy)
@@ -2841,7 +2841,7 @@ x
 Driver Joined Separate
 
 shared
-Driver RejectNegative Negative(pie)
+Driver RejectNegative Negative(no-pie)
 Create a shared library
 
 shared-libgcc
@@ -2885,6 +2885,10 @@ Driver
 symbolic
 Driver
 
+no-pie
+Driver RejectNegative Negative(pie)
+Create a position dependent executable
+
 pie
 Driver RejectNegative Negative(shared)
 Create a position independent executable
Index: gcc.c
===================================================================
--- gcc.c	(revision 212826)
+++ gcc.c	(working copy)
@@ -672,9 +672,9 @@ proper position among the other output files.  */
 
 #ifndef LINK_PIE_SPEC
 #ifdef HAVE_LD_PIE
-#define LINK_PIE_SPEC "%{pie:-pie} "
+#define LINK_PIE_SPEC "%{pie:-pie} %{no-pie:}"
 #else
-#define LINK_PIE_SPEC "%{pie:} "
+#define LINK_PIE_SPEC "%{pie:} %{no-pie:}"
 #endif
 #endif
 
@@ -3135,6 +3135,7 @@ display_help (void)
   fputs (_("  -c                       Compile and assemble, but do not link\n"), stdout);
   fputs (_("  -o <file>                Place the output into <file>\n"), stdout);
   fputs (_("  -pie                     Create a position independent executable\n"), stdout);
+  fputs (_("  -no-pie                  Create a position dependent executable\n"), stdout);
   fputs (_("  -shared                  Create a shared library\n"), stdout);
   fputs (_("\
   -x <language>            Specify the language of the following input files\n\