1 files changed, 19 insertions, 0 deletions
diff --git a/configure b/configure
index 1fbce3b5..b65bbaf5 100755
--- a/configure
+++ b/configure
@@ -141,6 +141,8 @@ bindir='bin'
 datadir='share/txr'
 mandir='share/man'
 maintainer=
+parallelmake=
+parallelmake_given=
 make=
 cross=
 compiler_prefix=
@@ -332,6 +334,13 @@ maintainer [$maintainer]
   the parser.l and parser.y files will have no effect. In maintainer mode,
   also, c90 is used if compiling the code as C.
 
+parallelmake [$parallelmake]
+
+  Boolean. If set to 'y', it specifies that parallel building with make -j
+  is permitted. Otherwise the Makefile asserts no parallelism with
+  a .NOTOPARALLEL: directive. The above maintainer mode also implies
+  parallel building being permited.
+
 prefix [$prefix]
 
   Specifies root directory where the software will ultimately be installed and
@@ -886,6 +895,9 @@ termios_define := $termios_define
 # do we compile in debug support?
 debug_support := $debug_support
 
+# allow parallel make?
+parallelmake := $parallelmake
+
 # EXE suffix
 EXE := $exe
 
@@ -1777,6 +1789,13 @@ if [ $maintainer ] ; then
 fi
 
 #
+# Check for parallel build
+#
+if [ $maintainer ] && ! [ $parallelmake_given ] ; then
+  parallelmake=y
+fi
+
+#
 # sys/wait.h
 #