From daac7b3b2aae9895e6fd46588739b992655c66f5 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 5 Mar 2010 10:32:35 +0100
Subject: forkpty() compatibility

---
 config.h.in  |  6 +++++
 configure    | 80 ++++++------------------------------------------------------
 configure.ac | 12 ++++++---
 src/dirax.c  |  9 ++++---
 4 files changed, 27 insertions(+), 80 deletions(-)

diff --git a/config.h.in b/config.h.in
index f1436fd0..582988de 100644
--- a/config.h.in
+++ b/config.h.in
@@ -6,6 +6,12 @@
 /* Define to 1 if you have the `forkpty' function. */
 #undef HAVE_FORKPTY
 
+/* Define to 1 if a Linux-style forkpty is available */
+#undef HAVE_FORKPTY_BSD
+
+/* Define to 1 if a Linux-style forkpty is available */
+#undef HAVE_FORKPTY_LINUX
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
diff --git a/configure b/configure
index 51bdd945..808d09d5 100755
--- a/configure
+++ b/configure
@@ -5596,6 +5596,10 @@ as_val=`eval 'as_val=${'$as_ac_var'}
 #define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_FORKPTY_BSD 1
+_ACEOF
+
 else
   { $as_echo "$as_me:$LINENO: checking for forkpty in -lutil" >&5
 $as_echo_n "checking for forkpty in -lutil... " >&6; }
@@ -5663,83 +5667,13 @@ fi
 { $as_echo "$as_me:$LINENO: result: $ac_cv_lib_util_forkpty" >&5
 $as_echo "$ac_cv_lib_util_forkpty" >&6; }
 if test "x$ac_cv_lib_util_forkpty" = x""yes; then
-  cat >>confdefs.h <<\_ACEOF
-#define HAVE_FORKPTY 1
-_ACEOF
- LIBS="$LIBS -lutil"
-else
-  { $as_echo "$as_me:$LINENO: checking for forkpty in -lbsd" >&5
-$as_echo_n "checking for forkpty in -lbsd... " >&6; }
-if test "${ac_cv_lib_bsd_forkpty+set}" = set; then
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lbsd  $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char forkpty ();
-int
-main ()
-{
-return forkpty ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
-$as_echo "$ac_try_echo") >&5
-  (eval "$ac_link") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext && {
-	 test "$cross_compiling" = yes ||
-	 $as_test_x conftest$ac_exeext
-       }; then
-  ac_cv_lib_bsd_forkpty=yes
-else
-  $as_echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-	ac_cv_lib_bsd_forkpty=no
-fi
 
-rm -rf conftest.dSYM
-rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_lib_bsd_forkpty" >&5
-$as_echo "$ac_cv_lib_bsd_forkpty" >&6; }
-if test "x$ac_cv_lib_bsd_forkpty" = x""yes; then
-  cat >>confdefs.h <<\_ACEOF
-#define HAVE_FORKPTY 1
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_FORKPTY_LINUX 1
 _ACEOF
- LIBS="$LIBS -lbsd"
-fi
 
+      LIBS="$LIBS -lutil"
 
 fi
 
diff --git a/configure.ac b/configure.ac
index ce686568..f1e98934 100644
--- a/configure.ac
+++ b/configure.ac
@@ -78,11 +78,15 @@ AS_IF([test "x$enable_gtk" != "xno"],
 AM_CONDITIONAL([HAVE_GTK], test x$havegtk = xtrue)
 
 
-AC_CHECK_FUNCS(forkpty,,
+AC_CHECK_FUNCS(forkpty,
+   AC_DEFINE([HAVE_FORKPTY_BSD], [1],
+             [Define to 1 if a Linux-style forkpty is available]),
    AC_CHECK_LIB(util,forkpty,
-     [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lutil"],
-     AC_CHECK_LIB(bsd,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lbsd"])
-   )
+   [
+      AC_DEFINE([HAVE_FORKPTY_LINUX], [1],
+                [Define to 1 if a Linux-style forkpty is available])
+      LIBS="$LIBS -lutil"
+   ])
 )
 
 
diff --git a/src/dirax.c b/src/dirax.c
index 893b21fb..7b1322f2 100644
--- a/src/dirax.c
+++ b/src/dirax.c
@@ -19,14 +19,17 @@
 #include <stdio.h>
 #include <math.h>
 #include <string.h>
-#include <pty.h>
 #include <unistd.h>
 #include <sys/wait.h>
 #include <fcntl.h>
 #include <assert.h>
 #include <sys/ioctl.h>
-#include <termio.h>
-#include <sgtty.h>
+
+#if HAVE_FORKPTY_LINUX
+#include <pty.h>
+#elif HAVE_FORKPTY_BSD
+#include <util.h>
+#endif
 
 
 #include "image.h"
-- 
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