patch-jemalloc

diff --git a/configure b/configure
index b584c44..e55815a 100755
--- a/configure
+++ b/configure
@@ -4876,16 +4876,21 @@ case "${host}" in
 	force_lazy_lock="1"
 	;;
   *-*-dragonfly*)
 	CFLAGS="$CFLAGS"
 	abi="elf"
 	$as_echo "#define JEMALLOC_PURGE_MADVISE_FREE  " >>confdefs.h
 
 	;;
+  *-*-openbsd*)
+	CFLAGS="$CFLAGS"
+	abi="elf"
+	$as_echo "#define JEMALLOC_PURGE_MADVISE_FREE  " >>confdefs.h
+	;;
   *-*-linux*)
 	CFLAGS="$CFLAGS"
 	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 	abi="elf"
 	$as_echo "#define JEMALLOC_HAS_ALLOCA_H 1" >>confdefs.h
 
 	$as_echo "#define JEMALLOC_PURGE_MADVISE_DONTNEED  " >>confdefs.h
 
diff --git a/configure.ac b/configure.ac
index e4afe88..302f359 100644
--- a/configure.ac
+++ b/configure.ac
@@ -283,16 +283,21 @@ case "${host}" in
 	AC_DEFINE([JEMALLOC_PURGE_MADVISE_FREE], [ ])
 	force_lazy_lock="1"
 	;;
   *-*-dragonfly*)
 	CFLAGS="$CFLAGS"
 	abi="elf"
 	AC_DEFINE([JEMALLOC_PURGE_MADVISE_FREE], [ ])
 	;;
+  *-*-openbsd*)
+	CFLAGS="$CFLAGS"
+	abi="elf"
+	AC_DEFINE([JEMALLOC_PURGE_MADVISE_FREE], [ ])
+	;;
   *-*-linux*)
 	CFLAGS="$CFLAGS"
 	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 	abi="elf"
 	AC_DEFINE([JEMALLOC_HAS_ALLOCA_H])
 	AC_DEFINE([JEMALLOC_PURGE_MADVISE_DONTNEED], [ ])
 	AC_DEFINE([JEMALLOC_THREADED_INIT], [ ])
 	default_munmap="0"