Remove configure check for unused fdopen.

2012-01-12  Janne Blomqvist  <jb@gcc.gnu.org>

	* configure.ac: Remove check for fdopen.
	* runtime/backtrace.c (CAN_PIPE): Fix comment, remove check for
	fdopen.
	* configure: Regenerated.
	* config.h.in: Regenerated.

From-SVN: r183124

libgfortran/ChangeLog

 2012-01-12  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* configure.ac: Remove check for fdopen.
+	* runtime/backtrace.c (CAN_PIPE): Fix comment, remove check for
+	fdopen.
+	* configure: Regenerated.
+	* config.h.in: Regenerated.
+
+2012-01-12  Janne Blomqvist  <jb@gcc.gnu.org>
 	    Tobias Burnus  <burnus@net-b.de>
 
 	PR libfortran/51803

libgfortran/config.h.in

@@ -363,9 +363,6 @@
 /* libm includes fabsl */
 #undef HAVE_FABSL
 
-/* Define to 1 if you have the `fdopen' function. */
-#undef HAVE_FDOPEN
-
 /* libm includes feenableexcept */
 #undef HAVE_FEENABLEEXCEPT
 

libgfortran/configure

@@ -2569,7 +2569,6 @@ as_fn_append ac_func_list " execve"
 as_fn_append ac_func_list " pipe"
 as_fn_append ac_func_list " dup2"
 as_fn_append ac_func_list " close"
-as_fn_append ac_func_list " fdopen"
 as_fn_append ac_func_list " strcasestr"
 as_fn_append ac_func_list " getrlimit"
 as_fn_append ac_func_list " gettimeofday"
@@ -12318,7 +12317,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12321 "configure"
+#line 12320 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12424,7 +12423,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12427 "configure"
+#line 12426 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -16533,8 +16532,6 @@ done
 
 
 
-
-
 # Check for C99 (and other IEEE) math functions
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for acosf in -lm" >&5
 $as_echo_n "checking for acosf in -lm... " >&6; }

libgfortran/configure.ac

@@ -263,7 +263,7 @@ AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_
 # Check for library functions.
 AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
 ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \
-alarm access fork execl wait setmode execve pipe dup2 close fdopen \
+alarm access fork execl wait setmode execve pipe dup2 close \
 strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
 getcwd localtime_r gmtime_r strerror_r getpwuid_r ttyname_r clock_gettime \
 readlink getgid getpid getppid getuid geteuid)

libgfortran/runtime/backtrace.c

@@ -40,13 +40,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include "unwind.h"
 
 
-/* Macros for common sets of capabilities: can we fork and exec, can
-   we use glibc-style backtrace functions, and can we use pipes.  */
+/* Macros for common sets of capabilities: can we fork and exec, and
+   can we use pipes to communicate with the subprocess.  */
 #define CAN_FORK (defined(HAVE_FORK) && defined(HAVE_EXECVE) \
 		  && defined(HAVE_WAIT))
 #define CAN_PIPE (CAN_FORK && defined(HAVE_PIPE) \
-		  && defined(HAVE_DUP2) && defined(HAVE_FDOPEN) \
-		  && defined(HAVE_CLOSE))
+		  && defined(HAVE_DUP2) && defined(HAVE_CLOSE))
 
 #ifndef PATH_MAX
 #define PATH_MAX 4096