* acconfig.h: Add support for NEWVFORK.

* config.h.in: Ditto.
* configure.in: Add --enable-vfork option.
* configure: Regenerate.
* dcrt0.cc (quoted): Detect and fix up quoted backslashes.
* sigproc.cc (proc_subproc): Correctly name handle of newly added child process
to avoid erroneous debugging messages about closing the wrong handle.

7 files changed, 98 insertions, 52 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 6d5258e..b1d1582 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,14 @@
+Sun Jul 16 13:23:04 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* acconfig.h: Add support for NEWVFORK.
+	* config.h.in: Ditto.
+	* configure.in: Add --enable-vfork option.
+	* configure: Regenerate.
+	* dcrt0.cc (quoted): Detect and fix up quoted backslashes.
+	* sigproc.cc (proc_subproc): Correctly name handle of newly added child
+	process to avoid erroneous debugging messages about closing the wrong
+	handle.
+
 Sun Jul 16 02:30:09 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* spawn.cc (spawn_guts): Use \ for quoting '"'.
diff --git a/winsup/cygwin/acconfig.h b/winsup/cygwin/acconfig.h
index 7430a4e..c187c0b 100644
--- a/winsup/cygwin/acconfig.h
+++ b/winsup/cygwin/acconfig.h
@@ -9,3 +9,6 @@
 
 /* Define if building thread-safe Cygwin DLL.  */
 #undef _MT_SAFE
+
+/* Define if using new vfork functionality. */
+#undef NEWVFORK
diff --git a/winsup/cygwin/config.h.in b/winsup/cygwin/config.h.in
index 6ae0dbc..99931a5 100644
--- a/winsup/cygwin/config.h.in
+++ b/winsup/cygwin/config.h.in
@@ -33,3 +33,6 @@
 
 /* Define if building thread-safe Cygwin DLL.  */
 #undef _MT_SAFE
+
+/* Define if using new vfork functionality. */
+#undef NEWVFORK
diff --git a/winsup/cygwin/configure b/winsup/cygwin/configure
index 2c16cfb..2e10e08 100755
--- a/winsup/cygwin/configure
+++ b/winsup/cygwin/configure
@@ -17,6 +17,8 @@ ac_help="$ac_help
  --enable-extra-threadsafe-checking	Build a cygwin DLL which is thread safe with extra consistency checking"
 ac_help="$ac_help
  --enable-debugging		Build a cygwin DLL which has more consistency checking for debugging"
+ac_help="$ac_help
+ --enable-vfork		Build a cygwin DLL which uses experimental vfork code"
 
 # Initialize some variables set by options.
 # The variables have the same names as the options, with
@@ -571,7 +573,7 @@ ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:575: checking for a BSD compatible install" >&5
+echo "configure:577: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -655,7 +657,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:659: checking host system type" >&5
+echo "configure:661: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -676,7 +678,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:680: checking target system type" >&5
+echo "configure:682: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -694,7 +696,7 @@ target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:698: checking build system type" >&5
+echo "configure:700: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -726,7 +728,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:730: checking for $ac_word" >&5
+echo "configure:732: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -758,7 +760,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:762: checking for $ac_word" >&5
+echo "configure:764: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -794,7 +796,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:798: checking for $ac_word" >&5
+echo "configure:800: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -843,7 +845,7 @@ fi
 fi
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:847: checking whether we are using GNU C" >&5
+echo "configure:849: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -852,7 +854,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:856: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:858: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -867,7 +869,7 @@ if test $ac_cv_prog_gcc = yes; then
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS=
   echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:871: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:873: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -915,7 +917,7 @@ esac
 # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:919: checking for $ac_word" >&5
+echo "configure:921: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -947,7 +949,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ar", so it can be a program name with args.
 set dummy ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:951: checking for $ac_word" >&5
+echo "configure:953: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -982,7 +984,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
 set dummy ${ac_tool_prefix}as; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:986: checking for $ac_word" >&5
+echo "configure:988: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1014,7 +1016,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "as", so it can be a program name with args.
 set dummy as; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1018: checking for $ac_word" >&5
+echo "configure:1020: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1049,7 +1051,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1053: checking for $ac_word" >&5
+echo "configure:1055: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1081,7 +1083,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1085: checking for $ac_word" >&5
+echo "configure:1087: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1116,7 +1118,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ld", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ld; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1120: checking for $ac_word" >&5
+echo "configure:1122: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1148,7 +1150,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ld", so it can be a program name with args.
 set dummy ld; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1152: checking for $ac_word" >&5
+echo "configure:1154: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1183,7 +1185,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
 set dummy ${ac_tool_prefix}dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1187: checking for $ac_word" >&5
+echo "configure:1189: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1215,7 +1217,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "dlltool", so it can be a program name with args.
 set dummy dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1219: checking for $ac_word" >&5
+echo "configure:1221: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1250,7 +1252,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}windres", so it can be a program name with args.
 set dummy ${ac_tool_prefix}windres; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1254: checking for $ac_word" >&5
+echo "configure:1256: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1282,7 +1284,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "windres", so it can be a program name with args.
 set dummy windres; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1286: checking for $ac_word" >&5
+echo "configure:1288: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1316,7 +1318,7 @@ fi
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1320: checking how to run the C preprocessor" >&5
+echo "configure:1322: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1331,13 +1333,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1335 "configure"
+#line 1337 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1341: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1343: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1348,13 +1350,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1352 "configure"
+#line 1354 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1358: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1360: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1365,13 +1367,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1369 "configure"
+#line 1371 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1375: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1377: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1398,19 +1400,19 @@ echo "$ac_t""$CPP" 1>&6
 # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
-echo "configure:1402: checking for working alloca.h" >&5
+echo "configure:1404: checking for working alloca.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1407 "configure"
+#line 1409 "configure"
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
 char *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
-if { (eval echo configure:1414: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1416: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_header_alloca_h=yes
 else
@@ -1431,12 +1433,12 @@ EOF
 fi
 
 echo $ac_n "checking for alloca""... $ac_c" 1>&6
-echo "configure:1435: checking for alloca" >&5
+echo "configure:1437: checking for alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1440 "configure"
+#line 1442 "configure"
 #include "confdefs.h"
 
 #ifdef __GNUC__
@@ -1464,7 +1466,7 @@ int main() {
 char *p = (char *) alloca(1);
 ; return 0; }
 EOF
-if { (eval echo configure:1468: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1470: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_func_alloca_works=yes
 else
@@ -1496,12 +1498,12 @@ EOF
 
 
 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
-echo "configure:1500: checking whether alloca needs Cray hooks" >&5
+echo "configure:1502: checking whether alloca needs Cray hooks" >&5
 if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1505 "configure"
+#line 1507 "configure"
 #include "confdefs.h"
 #if defined(CRAY) && ! defined(CRAY2)
 webecray
@@ -1526,12 +1528,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
 if test $ac_cv_os_cray = yes; then
 for ac_func in _getb67 GETB67 getb67; do
   echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1530: checking for $ac_func" >&5
+echo "configure:1532: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1535 "configure"
+#line 1537 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1554,7 +1556,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1558: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1560: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1581,7 +1583,7 @@ done
 fi
 
 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
-echo "configure:1585: checking stack direction for C alloca" >&5
+echo "configure:1587: checking stack direction for C alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1589,7 +1591,7 @@ else
   ac_cv_c_stack_direction=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 1593 "configure"
+#line 1595 "configure"
 #include "confdefs.h"
 find_stack_direction ()
 {
@@ -1608,7 +1610,7 @@ main ()
   exit (find_stack_direction() < 0);
 }
 EOF
-if { (eval echo configure:1612: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1614: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_stack_direction=1
 else
@@ -1632,7 +1634,7 @@ fi
 subdirs="utils doc"
 		
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:1636: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:1638: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1669,7 +1671,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 1673 "configure"
+#line 1675 "configure"
 #include "confdefs.h"
 
 #include <string.h>
@@ -1682,7 +1684,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:1686: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1688: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   use_builtin_memset=yes
 else
@@ -1773,12 +1775,26 @@ esac
 fi
 
 
+# Check whether --enable-vfork or --disable-vfork was given.
+if test "${enable_vfork+set}" = set; then
+  enableval="$enable_vfork"
+  case "${enableval}" in
+yes)	 cat >> confdefs.h <<\EOF
+#define NEWVFORK 1
+EOF
+ ;;
+no)	 ;;
+esac
+
+fi
+
+
 
 
 
 
 echo $ac_n "checking if newlib is part of the build tree""... $ac_c" 1>&6
-echo "configure:1782: checking if newlib is part of the build tree" >&5
+echo "configure:1798: checking if newlib is part of the build tree" >&5
 
 EXE_LDFLAGS=
 if test -d ../newlib
@@ -1793,9 +1809,9 @@ fi
 if test x"$EXE_LDFLAGS" = x
 then
   echo $ac_n "checking if installed newlib needed""... $ac_c" 1>&6
-echo "configure:1797: checking if installed newlib needed" >&5
+echo "configure:1813: checking if installed newlib needed" >&5
   cat > conftest.$ac_ext <<EOF
-#line 1799 "configure"
+#line 1815 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1803,7 +1819,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:1807: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1823: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   echo "$ac_t""no" 1>&6
     
diff --git a/winsup/cygwin/configure.in b/winsup/cygwin/configure.in
index 4c23360..fde0ae8 100644
--- a/winsup/cygwin/configure.in
+++ b/winsup/cygwin/configure.in
@@ -161,6 +161,14 @@ no)	 ;;
 esac
 ])
 
+AC_ARG_ENABLE(vfork,
+[ --enable-vfork		Build a cygwin DLL which uses experimental vfork code],
+[case "${enableval}" in
+yes)	 AC_DEFINE(NEWVFORK) ;;
+no)	 ;;
+esac
+])
+
 
 dnl The only time we might want to transform the install names
 dnl is for unix x cygwin.  Otherwise we don't.  For now we don't
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index e33187a..0b6c701 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -313,7 +313,12 @@ quoted (char *cmd, int winshell)
   p = cmd + 1;
   while (*p)
     {
-      if (*p != quote)
+      if (*p == '\\' && p[1] == '\\')
+	{
+	  strcpy (p, p + 1);
+	  p++;
+	}
+      else if (*p != quote)
 	p++;
       else if (p[-1] == '\\')
 	strcpy (p - 1, p);
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index b9a68af..d1ddd91 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -274,7 +274,7 @@ proc_subproc (DWORD what, DWORD val)
 
       pchildren[nchildren] = vchild;
       hchildren[nchildren] = vchild->hProcess;
-      ProtectHandle (vchild->hProcess);
+      ProtectHandle1 (vchild->hProcess, childhProc);
       sip_printf ("added pid %d to wait list, slot %d, winpid %p, handle %p",
 		  vchild->pid, nchildren, vchild->dwProcessId,
 		  vchild->hProcess);