No Subject

[Andris Pavenis <andris@stargate.astr.lu.lv>]

Hi!

Tried gdb-4.17.85 on i586-pc-linux-gnu (with glibc-2.1) and met following
problem that was no with gdb-4.17:

Some global symbols are defined in gdb/main.c (eg. gdb_stdout,
gdb-stderr, etc). As the result if I'm building all except main.c in
object library to use with some IDE that uses gdb for debugging 
(rhide-1.4.7),  I'm getting unresolved references. 

So I'm suggesting rather ugly hack (moving these definitions to top.c
and puting there static constructor that initializes gdb_std*). I agree does
not look nice, but I'm sending it only to point to possible problem.
I cannot use _initialize_* here as files must be defined before running
all _initialize_* procedures.

An alternative idea could be duplicating init code and global vrariables in
rhide.

Andris


--- main.c~1	Wed Feb 24 22:55:05 1999
+++ main.c	Mon Mar  8 16:38:44 1999
@@ -54,18 +54,6 @@
 
 int display_space;
 
-/* Whether this is the command line version or not */
-int tui_version = 0;
-
-/* Whether xdb commands will be handled */
-int xdb_commands = 0;
-
-/* Whether dbx commands will be handled */
-int dbx_commands = 0;
-
-GDB_FILE *gdb_stdout;
-GDB_FILE *gdb_stderr;
-
 /* Whether to enable writing into executable and core files */
 extern int write_files;
 
@@ -161,20 +149,6 @@
 
   getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
   current_directory = gdb_dirbuf;
-
-  gdb_file_size = sizeof(GDB_FILE);
-
-  gdb_stdout = (GDB_FILE *)xmalloc (gdb_file_size);
-  gdb_stdout->ts_streamtype = afile;
-  gdb_stdout->ts_filestream = stdout;
-  gdb_stdout->ts_strbuf = NULL;
-  gdb_stdout->ts_buflen = 0;
-
-  gdb_stderr = (GDB_FILE *)xmalloc (gdb_file_size);
-  gdb_stderr->ts_streamtype = afile;
-  gdb_stderr->ts_filestream = stderr;
-  gdb_stderr->ts_strbuf = NULL;
-  gdb_stderr->ts_buflen = 0;
 
   /* Parse arguments and options.  */
   {
--- top.c~1	Fri Jan 29 11:46:03 1999
+++ top.c	Mon Mar  8 16:37:03 1999
@@ -53,6 +53,19 @@
 
 extern void initialize_utils PARAMS ((void));
 
+
+/* Whether this is the command line version or not */
+int tui_version = 0;
+
+/* Whether xdb commands will be handled */
+int xdb_commands = 0;
+
+/* Whether dbx commands will be handled */
+int dbx_commands = 0;
+
+GDB_FILE *gdb_stdout;
+GDB_FILE *gdb_stderr;
+
 /* Prototypes for local functions */
 
 static void dont_repeat_command PARAMS ((char *, int));
@@ -467,6 +480,28 @@
 SIGJMP_BUF error_return;
 /* Where to go for return_to_top_level (RETURN_QUIT).  */
 SIGJMP_BUF quit_return;
+
+
+
+void __attribute__((constructor))
+_init_gdb_stdio (void)
+{
+  int gdb_file_size;
+  gdb_file_size = sizeof(GDB_FILE);
+
+  gdb_stdout = (GDB_FILE *)xmalloc (gdb_file_size);
+  gdb_stdout->ts_streamtype = afile;
+  gdb_stdout->ts_filestream = stdout;
+  gdb_stdout->ts_strbuf = NULL;
+  gdb_stdout->ts_buflen = 0;
+
+  gdb_stderr = (GDB_FILE *)xmalloc (gdb_file_size);
+  gdb_stderr->ts_streamtype = afile;
+  gdb_stderr->ts_filestream = stderr;
+  gdb_stderr->ts_strbuf = NULL;
+  gdb_stderr->ts_buflen = 0;
+}
+
 
 /* Return for reason REASON.  This generally gets back to the command
    loop, but can be caught via catch_errors.  */