Path format issue with cygwin... try to restore the original behavior

configure.in

@@ -13,6 +13,33 @@ SCPDEFS=""
 GIT_REPO_NAMES=""
 MINGW_EXTERNAL_DLLS=""
 
+PathFormat()
+{
+    formatted_path="$1"
+    if test "$host_os" = "cygwin" ; then
+        pf_part1=
+        pf_conv_to_dos=
+        for pf_part in $formated_path ; do
+            if test -z "$pf_part1" ; then
+                pf_part1="$pf_part"
+            else
+                pf_conv_to_dos="yes"
+            fi
+        done
+        if test "$pf_conv_to_dos" = "yes" ; then
+            formatted_path=`cygpath -d "$formatted_path"`
+        fi
+        fp_count_colon=`cat "$formattted_path" | grep -c "[:]"`
+        fp_count_slash=`cat "$formattted_path" | grep -c "[/]"`
+        if test "$fp_count_slash$fp_count_colon" != "00" ; then
+            if test "$fp_count_colon" = "0" ; then
+                formatted_path=`realpath "$formatted_path"`
+            fi
+            formatted_path=`cygpath -m "$formatted_path"`
+        fi
+    fi
+}
+
 if test -n "$SOLARENV" ; then
     AC_MSG_ERROR([You have sourced Env.Host.sh in this shell.  This may lead to trouble, please run in a fresh (login) shell.])
 fi
@@ -41,8 +68,8 @@ AC_SUBST(CROSS_COMPILING)
 if test "$build_os" = "cygwin"; then
     EXEEXT_FOR_BUILD=.exe
     SRC_ROOT=`pwd`
-    SRC_ROOT=`cygpath -d "$SRC_ROOT"`
-    SRC_ROOT=`cygpath -u "$SRC_ROOT"`
+    PathFormat "$SRC_ROOT"
+    SRC_ROOT="$formatted_path"
 else
     EXEEXT_FOR_BUILD=
     SRC_ROOT=`pwd`