bisect: fix a regression causing a segfault

diff --git a/Makefile b/Makefile
index 64136dde488cacb317167b3363f6c2c9997fdc64..cd75985991f4535c45e2589222a9e6a38fb1d613 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -205,6 +205,9 @@ all::
 #
 # Define NO_MMAP if you want to avoid mmap.
 #
+# Define MMAP_PREVENTS_DELETE if a file that is currently mmapped cannot be
+# deleted or cannot be replaced using rename().
+#
 # Define NO_SYS_POLL_H if you don't have sys/poll.h.
 #
 # Define NO_POLL if you do not have or don't want to use poll().
@@ -1392,6 +1395,9 @@ else
                COMPAT_OBJS += compat/win32mmap.o
        endif
 endif
+ifdef MMAP_PREVENTS_DELETE
+       BASIC_CFLAGS += -DMMAP_PREVENTS_DELETE
+endif
 ifdef OBJECT_CREATION_USES_RENAMES
        COMPAT_CFLAGS += -DOBJECT_CREATION_MODE=1
 endif