Detect presence of fdopendir in Configure

Configure

@@ -478,6 +478,7 @@ d_fd_set=''
 d_fds_bits=''
 d_fdclose=''
 d_fdim=''
+d_fdopendir=''
 d_fegetround=''
 d_ffs=''
 d_ffsl=''
@@ -13344,6 +13345,10 @@ esac
 set i_fcntl
 eval $setvar
 
+: see if fdopendir exists
+set fdopendir d_fdopendir
+eval $inlibc
+
 : see if fork exists
 set fork d_fork
 eval $inlibc
@@ -25052,6 +25057,7 @@ d_flockproto='$d_flockproto'
 d_fma='$d_fma'
 d_fmax='$d_fmax'
 d_fmin='$d_fmin'
+d_fdopendir='$d_fdopendir'
 d_fork='$d_fork'
 d_fp_class='$d_fp_class'
 d_fp_classify='$d_fp_classify'

Cross/config.sh-arm-linux

@@ -212,6 +212,7 @@ d_fd_macros='define'
 d_fd_set='define'
 d_fdclose='undef'
 d_fdim='undef'
+d_fdopendir=undef
 d_fds_bits='undef'
 d_fegetround='define'
 d_ffs='undef'

Cross/config.sh-arm-linux-n770

@@ -211,6 +211,7 @@ d_fd_macros='define'
 d_fd_set='define'
 d_fdclose='undef'
 d_fdim='undef'
+d_fdopendir=undef
 d_fds_bits='undef'
 d_fegetround='define'
 d_ffs='undef'

Porting/Glossary

@@ -947,6 +947,11 @@ d_fmin (d_fmin.U):
 	This variable conditionally defines the HAS_FMIN symbol, which
 	indicates to the C program that the fmin() routine is available.
 
+d_fdopendir (d_fdopendir.U):
+	This variable conditionally defines the HAS_FORK symbol, which
+	indicates that the fdopen routine is available to open a
+	directory descriptor.
+
 d_fork (d_fork.U):
 	This variable conditionally defines the HAS_FORK symbol, which
 	indicates to the C program that the fork() routine is available.

Porting/config.sh

@@ -223,6 +223,7 @@ d_fd_macros='define'
 d_fd_set='define'
 d_fdclose='undef'
 d_fdim='define'
+d_fdopendir='define'
 d_fds_bits='define'
 d_fegetround='define'
 d_ffs='define'

config_h.SH

@@ -142,6 +142,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_fcntl HAS_FCNTL		/**/
 
+/* HAS_FDOPENDIR:
+ * This symbol, if defined, indicates that the fdopen routine is
+ * available to open a directory descriptor.
+ */
+#$d_fdopendir HAS_FDOPENDIR		/**/
+
 /* HAS_FGETPOS:
  *	This symbol, if defined, indicates that the fgetpos routine is
  *	available to get the file position indicator, similar to ftell().

configure.com

@@ -6010,6 +6010,7 @@ $ WC "d_fd_set='" + d_fd_set + "'"
 $ WC "d_fd_macros='define'"
 $ WC "d_fdclose='undef'"
 $ WC "d_fdim='" + d_fdim + "'"
+$ WC "d_fdopendir='undef'"
 $ WC "d_fds_bits='define'"
 $ WC "d_fegetround='undef'"
 $ WC "d_ffs='undef'"

plan9/config_sh.sample

@@ -212,6 +212,7 @@ d_fd_macros='undef'
 d_fd_set='undef'
 d_fdclose='undef'
 d_fdim='undef'
+d_fdopendir=undef
 d_fds_bits='undef'
 d_fegetround='undef'
 d_ffs='undef'

win32/config.gc

@@ -199,6 +199,7 @@ d_fd_macros='define'
 d_fd_set='define'
 d_fdclose='undef'
 d_fdim='undef'
+d_fdopendir='undef'
 d_fds_bits='define'
 d_fegetround='undef'
 d_ffs='undef'

win32/config.vc

@@ -199,6 +199,7 @@ d_fd_macros='define'
 d_fd_set='define'
 d_fdclose='undef'
 d_fdim='undef'
+d_fdopendir='undef'
 d_fds_bits='define'
 d_fegetround='undef'
 d_ffs='undef'