From cf4b82a7c8ab83bc3f75c252f246f82581efd4db Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 5 Aug 2024 10:29:11 +0200
Subject: [PATCH] improve generator logging

---
 src/include/options-generator.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/include/options-generator.c b/src/include/options-generator.c
index 68fd9d5d..cf3da24e 100644
--- a/src/include/options-generator.c
+++ b/src/include/options-generator.c
@@ -714,8 +714,9 @@ main (int argc,
     if (NULL == f)
     {
       fprintf (stderr,
-               "Failed to open %s\n",
-               fn);
+               "Failed to open %s: %s\n",
+               fn,
+               strerror (errno));
       free (fn);
       return 2;
     }
@@ -976,8 +977,9 @@ TOP:
     if (NULL == f)
     {
       fprintf (stderr,
-               "Failed to open `%s'\n",
-               doc_in);
+               "Failed to open `%s': %s\n",
+               doc_in,
+               strerror (errno));
       return 2;
     }
     fprintf (f,
@@ -1006,8 +1008,9 @@ TOP:
     if (NULL == f)
     {
       fprintf (stderr,
-               "Failed to open `%s'\n",
-               so_c);
+               "Failed to open `%s': %s\n",
+               so_c,
+               strerror (errno));
       return 2;
     }
     fprintf (f,
@@ -1144,8 +1147,9 @@ TOP:
     if (NULL == f)
     {
       fprintf (stderr,
-               "Failed to open `%s'\n",
-               do_h);
+               "Failed to open `%s': %s\n",
+               do_h,
+               strerror (errno));
       return 2;
     }
     fprintf (f,