[gcc r15-3374] lto-wrapper: Honor -save-temps for ltrans' makefile

[Tobias Burnus]

https://gcc.gnu.org/g:6640a59fed48ed4e485d4a970f3ca9ed9e908640

commit r15-3374-g6640a59fed48ed4e485d4a970f3ca9ed9e908640
Author: Tobias Burnus <tburnus@baylibre.com>
Date:   Mon Sep 2 10:28:29 2024 +0200

    lto-wrapper: Honor -save-temps for ltrans' makefile
    
    gcc/ChangeLog:
    
            * lto-wrapper.cc (run_gcc): Honor -save-temps for
            makefile name.

Diff:
---
 gcc/lto-wrapper.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/lto-wrapper.cc b/gcc/lto-wrapper.cc
index 6bfc96590a5a..c07765b37a28 100644
--- a/gcc/lto-wrapper.cc
+++ b/gcc/lto-wrapper.cc
@@ -1994,7 +1994,10 @@ cont:
 
       if (parallel)
 	{
-	  makefile = make_temp_file (".mk");
+	  if (save_temps)
+	    makefile = concat (dumppfx, "ltrans.mk", NULL);
+	  else
+	    makefile = make_temp_file (".mk");
 	  mstream = fopen (makefile, "w");
 	  qsort (ltrans_priorities, nr, sizeof (int) * 2, cmp_priority);
 	}