-INSTALL_PROGRAM = $(INSTALL) -m 755
-INSTALL_SCRIPT = $(INSTALL) -m 755
-INSTALL_SHLIB = $(INSTALL) -m 755
-INSTALL_DATA = $(INSTALL) -m 644
-INSTALL_HEADER = $(INSTALL) -m 644
-INSTALL_MAN = $(INSTALL) -m 644
-INSTALL_DOC = $(INSTALL) -m 644
-INSTALL_DIR = $(INSTALL) -m 755 -d
+# These takes 3 arguments:
+# $1 = flags
+# $2 = files
+# $3 = dest
+INSTALL_PROGRAM = $(INSTALL) -m 755 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_SCRIPT = $(INSTALL) -m 755 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_SHLIB = $(INSTALL) -m 755 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_DATA = $(INSTALL) -m 644 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_HEADER = $(INSTALL) -m 644 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_MAN = $(INSTALL) -m 644 $1 $2 $(call MK_INSTALL_DEST,$3)
+INSTALL_DOC = $(INSTALL) -m 644 $1 $2 $(call MK_INSTALL_DEST,$3)
+# Only 1 argument, the directory to create:
+INSTALL_DIR = $(INSTALL) -m 755 -d $(call MK_INSTALL_DEST,$1)
+
+# cygwin's /bin/install doesn't set file modes correctly if the
+# destination path is a C: style path:
+#
+# $ /bin/install -c -m 644 foo /cygdrive/c/cygwin/home/ian/foo2
+# $ /bin/install -c -m 644 foo c:/cygwin/home/ian/foo3
+# $ ls -l foo*
+# -rw-r--r-- 1 ian None 0 2011-01-06 18:28 foo
+# -rw-r--r-- 1 ian None 0 2011-01-06 18:29 foo2
+# -rwxrwxrwx 1 ian None 0 2011-01-06 18:29 foo3
+#
+# This causes problems for bindisttest/checkBinaries.sh which then
+# thinks that e.g. the userguide HTML files are binaries.
+#
+# We therefore use a /cygdrive path if we are on cygwin (only)
+# (This will make a Cygwin build run slowly
+# because of all those shell invocations.)
+ifeq "$(OSTYPE)" "cygwin"
+MK_INSTALL_DEST = $$(cygpath $1)
+else
+MK_INSTALL_DEST = $1
+endif