From 4dbc7773ffc2049ca43f3022d5e5e209fd57e2b0 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Fri, 6 Aug 1993 20:45:36 +0000
Subject: [PATCH] Permit relative path for standard_startfile_prefix

From-SVN: r5091
---
 gcc/gcc.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/gcc/gcc.c b/gcc/gcc.c
index 1c17bb98d44..2d2f5197ec0 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -3718,8 +3718,28 @@ main (argc, argv)
       add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
 #endif
 
-      add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
-		  NULL_PTR);
+      /* If standard_startfile_prefix is relative, base it on
+	 standard_exec_prefix.  This lets us move the installed tree
+	 as a unit.  If GCC_EXEC_PREFIX is defined, base
+	 standard_startfile_prefix on that as well.  */
+      if (*standard_startfile_prefix == '/')
+	add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
+		    NULL_PTR);
+      else
+	{
+	  if (gcc_exec_prefix)
+	    add_prefix (&startfile_prefix,
+			concat (gcc_exec_prefix,
+				machine_suffix,
+				standard_startfile_prefix),
+			0, 0, NULL_PTR);
+	  add_prefix (&startfile_prefix,
+		      concat (standard_exec_prefix,
+			      machine_suffix,
+			      standard_startfile_prefix),
+		      0, 0, NULL_PTR);
+	}		       
+
       add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
 		  NULL_PTR);
       add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
-- 
2.30.2