diff --git a/borg/_hashindex.c b/borg/_hashindex.c
index f1aa0aa8c..e3a4641da 100644
--- a/borg/_hashindex.c
+++ b/borg/_hashindex.c
@@ -8,10 +8,14 @@
 #include <fcntl.h>
 #include <unistd.h>
 
-#if defined(BYTE_ORDER)&&(BYTE_ORDER == BIG_ENDIAN)
+#if defined (__SVR4) && defined (__sun)
+#include <sys/isa_defs.h>
+#endif
+
+#if (defined(BYTE_ORDER)&&(BYTE_ORDER == BIG_ENDIAN)) || defined(_BIG_ENDIAN)
 #define _le32toh(x) __builtin_bswap32(x)
 #define _htole32(x) __builtin_bswap32(x)
-#elif defined(BYTE_ORDER)&&(BYTE_ORDER == LITTLE_ENDIAN)
+#elif (defined(BYTE_ORDER)&&(BYTE_ORDER == LITTLE_ENDIAN)) || defined(_LITTLE_ENDIAN)
 #define _le32toh(x) (x)
 #define _htole32(x) (x)
 #else
diff --git a/borg/archiver.py b/borg/archiver.py
index 75084453d..7b99c3bb5 100644
--- a/borg/archiver.py
+++ b/borg/archiver.py
@@ -322,6 +322,12 @@ class Archiver:
         elif stat.S_ISSOCK(st.st_mode):
             # Ignore unix sockets
             return
+        elif stat.S_ISDOOR(st.st_mode):
+            # Ignore Solaris doors
+            return
+        elif stat.S_ISPORT(st.st_mode):
+            # Ignore Solaris event ports
+            return
         else:
             self.print_warning('Unknown file type: %s', path)
             return
diff --git a/borg/locking.py b/borg/locking.py
index c03885780..bc3660d61 100644
--- a/borg/locking.py
+++ b/borg/locking.py
@@ -33,7 +33,8 @@ class TimeoutTimer:
 
         :param timeout: time out interval [s] or None (no timeout)
         :param sleep: sleep interval [s] (>= 0: do sleep call, <0: don't call sleep)
-                      or None (autocompute: use 10% of timeout, or 1s for no timeout)
+                      or None (autocompute: use 10% of timeout [but not more than 60s],
+                      or 1s for no timeout)
         """
         if timeout is not None and timeout < 0:
             raise ValueError("timeout must be >= 0")
@@ -42,7 +43,7 @@ class TimeoutTimer:
             if timeout is None:
                 sleep = 1.0
             else:
-                sleep = timeout / 10.0
+                sleep = min(60.0, timeout / 10.0)
         self.sleep_interval = sleep
         self.start_time = None
         self.end_time = None
diff --git a/docs/installation.rst b/docs/installation.rst
index 3e5946079..ef52827a4 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -198,7 +198,7 @@ Use the Cygwin installer to install the dependencies::
 
     python3 python3-setuptools
     python3-cython  # not needed for releases
-    binutils gcc-core
+    binutils gcc-g++
     libopenssl openssl-devel
     liblz4_1 liblz4-devel  # from cygwinports.org
     git make openssh