Add checks to the configure script for mknod, tcdrain and uname, for systems (like VxWorks) which don't have it. See [aa4d088e5d]

2 files changed, 303 insertions, 0 deletions

diff --git a/unix/configure b/unix/configure
index 11ee9ef..8981ef8 100755
--- a/unix/configure
+++ b/unix/configure
@@ -10687,6 +10687,306 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking for fork" >&5
+echo $ECHO_N "checking for fork... $ECHO_C" >&6
+if test "${ac_cv_func_fork+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define fork to an innocuous variant, in case <limits.h> declares fork.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define fork innocuous_fork
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char fork (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef fork
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char fork ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_fork) || defined (__stub___fork)
+choke me
+#else
+char (*f) () = fork;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != fork;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_fork=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_fork=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_fork" >&5
+echo "${ECHO_T}$ac_cv_func_fork" >&6
+if test $ac_cv_func_fork = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_FORK 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for mknod" >&5
+echo $ECHO_N "checking for mknod... $ECHO_C" >&6
+if test "${ac_cv_func_mknod+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define mknod to an innocuous variant, in case <limits.h> declares mknod.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define mknod innocuous_mknod
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char mknod (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef mknod
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char mknod ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_mknod) || defined (__stub___mknod)
+choke me
+#else
+char (*f) () = mknod;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != mknod;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_mknod=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_mknod=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_mknod" >&5
+echo "${ECHO_T}$ac_cv_func_mknod" >&6
+if test $ac_cv_func_mknod = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_MKNOD 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for tcdrain" >&5
+echo $ECHO_N "checking for tcdrain... $ECHO_C" >&6
+if test "${ac_cv_func_tcdrain+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define tcdrain to an innocuous variant, in case <limits.h> declares tcdrain.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define tcdrain innocuous_tcdrain
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char tcdrain (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef tcdrain
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char tcdrain ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_tcdrain) || defined (__stub___tcdrain)
+choke me
+#else
+char (*f) () = tcdrain;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != tcdrain;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_tcdrain=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_tcdrain=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_tcdrain" >&5
+echo "${ECHO_T}$ac_cv_func_tcdrain" >&6
+if test $ac_cv_func_tcdrain = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_TCDRAIN 1
+_ACEOF
+
+fi
+
 echo "$as_me:$LINENO: checking for uname" >&5
 echo $ECHO_N "checking for uname... $ECHO_C" >&6
 if test "${ac_cv_func_uname+set}" = set; then
diff --git a/unix/configure.in b/unix/configure.in
index 62ab90e..55f09eb 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -215,6 +215,9 @@ AC_REPLACE_FUNCS(mkstemp opendir strtol waitpid)
 AC_CHECK_FUNC(strerror, , [AC_DEFINE(NO_STRERROR, 1, [Do we have strerror()])])
 AC_CHECK_FUNC(getwd, , [AC_DEFINE(NO_GETWD, 1, [Do we have getwd()])])
 AC_CHECK_FUNC(wait3, , [AC_DEFINE(NO_WAIT3, 1, [Do we have wait3()])])
+AC_CHECK_FUNC(fork, , [AC_DEFINE(NO_FORK, 1, [Do we have fork()])])
+AC_CHECK_FUNC(mknod, , [AC_DEFINE(NO_MKNOD, 1, [Do we have mknod()])])
+AC_CHECK_FUNC(tcdrain, , [AC_DEFINE(NO_TCDRAIN, 1, [Do we have tcdrain()])])
 AC_CHECK_FUNC(uname, , [AC_DEFINE(NO_UNAME, 1, [Do we have uname()])])
 
 if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \