* configure.in: Add check for _etext.

* maint.c (maintenance_set_profile_cmd): Use etext if _etext isn't
available.
* config.in, configure: regenerated.

gdb/ChangeLog

@@ -1,3 +1,10 @@
+2003-02-14  Mark Kettenis  <kettenis@gnu.org>
+
+	* configure.in: Add check for _etext.
+	* maint.c (maintenance_set_profile_cmd): Use etext if _etext isn't
+	available.
+	* config.in, configure: regenerated.
+
 2003-02-14  Daniel Jacobowitz  <drow@mvista.com>
 
 	* dwarf2read.c (dwarf2_get_pc_bounds): Offset addresses by base.

gdb/config.in

@@ -431,6 +431,9 @@
 /* Define to BFD's default target vector.  */
 #undef DEFAULT_BFD_VEC
 
+/* Define to 1 if your system has the _etext variable.  */
+#undef HAVE__ETEXT
+
 /* Define to 1 to avoid a clash between <widec.h> and <wchar.h> on
    Solaris 2.[78] when using GCC.  */
 #undef _MSE_INT_H

gdb/configure.in

@@ -204,6 +204,16 @@ AC_ARG_ENABLE(profiling,
  [enable_profiling=no])
 
 AC_CHECK_FUNCS(monstartup _mcleanup)
+AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
+[AC_TRY_LINK(
+[#include <stdlib.h>
+extern char _etext;
+],
+[free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
+if test $ac_cv_var__etext = yes; then
+  AC_DEFINE(HAVE__ETEXT, 1,
+            [Define to 1 if your system has the _etext variable. ])
+fi
 if test "$enable_profiling" = yes ; then
   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)

gdb/maint.c

@@ -645,6 +645,14 @@ static int maintenance_profile_p;
 
 #if defined (HAVE_MONSTARTUP) && defined (HAVE__MCLEANUP)
 
+#ifdef HAVE__ETEXT
+extern char _etext;
+#define TEXTEND &_etext
+#else
+extern char etext;
+#define TEXTEND &etext
+#endif
+
 static int profiling_state;
 
 static void
@@ -669,7 +677,6 @@ maintenance_set_profile_cmd (char *args, int from_tty, struct cmd_list_element *
       static int profiling_initialized;
 
       extern void monstartup (unsigned long, unsigned long);
-      extern char _etext;
       extern int main();
 
       if (!profiling_initialized)
@@ -680,7 +687,7 @@ maintenance_set_profile_cmd (char *args, int from_tty, struct cmd_list_element *
 
       /* "main" is now always the first function in the text segment, so use
 	 its address for monstartup.  */
-      monstartup ((unsigned long) &main, (unsigned long) &_etext);
+      monstartup ((unsigned long) &main, (unsigned long) TEXTEND);
     }
   else
     {