diff --git a/CHANGES b/CHANGES
index 7888bbf..222d515 100644
--- a/CHANGES
+++ b/CHANGES
@@ -20,6 +20,22 @@ The following are the changes from calc version 2.12.6.9 to date:
     Added experimential %g printf (and strprintf) format implementation
     based on pull request from github user 10110111.
 
+    Made exterimental changes to macOS builds to not require use of
+    /usr/include.  The INCDIR for macOS uses:
+
+	INCDIR= $(shell xcrun --show-sdk-path --sdk macosx)/usr/include
+
+    to determine the upper path of the /usr/include directory for macOS.
+    The Darwin target seems to not automatically detected.  For now,
+    under macOS, declare the target as darwin:
+
+	# for macOS users only, force the target to be darwin
+	#
+	make target=Darwin clobber
+	make target=Darwin all
+	make target=Darwin chk
+	make target=Darwin install
+
 
 The following are the changes from calc version 2.12.6.6 to 2.12.6.8:
 
diff --git a/HOWTO.INSTALL b/HOWTO.INSTALL
index 90ae5e6..a2ef81d 100644
--- a/HOWTO.INSTALL
+++ b/HOWTO.INSTALL
@@ -32,6 +32,16 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 	targets, the default make is sufficent.  On FreeBSD for example,
 	one must use gmake instead of make.
 
+	Some report that under macOS, one has to declare the target
+	to be darwin.  So for macOS, one might have to do:
+
+	    # for macOS users only, force the target to be darwin
+	    #
+	    make target=Darwin clobber
+	    make target=Darwin all
+	    make target=Darwin chk
+	    make target=Darwin install
+
 	If your target system does not have GNU Make (or equivalent), then
 	you should try using the Makefile.simple and custom/Makefile.simple
 	files:
diff --git a/Makefile.ship b/Makefile.ship
index d367c70..88a8bc7 100644
--- a/Makefile.ship
+++ b/Makefile.ship
@@ -575,7 +575,7 @@ HAVE_UNUSED=
 ifeq ($(target),Darwin)
 
 # default INCDIR for macOS
-INCDIR= /usr/local/include
+INCDIR= $(shell xcrun --show-sdk-path --sdk macosx)/usr/include
 
 else
 #endif	/* end of skip for non-Gnu makefiles */
@@ -1054,7 +1054,7 @@ EXT=
 
 # The default calc versions
 #
-VERSION= 2.12.6.8
+VERSION= 2.12.6.9
 
 # Names of shared libraries with versions
 #
@@ -2179,7 +2179,7 @@ TARGETS= ${EARLY_TARGETS} ${BLD_TYPE} ${LATE_TARGETS}
 all: check_include ${BLD_TYPE} CHANGES
 
 check_include:
-	$(Q) if [ ! -d /usr/include ]; then \
+	$(Q) if [ ! -d ${INCDIR} ]; then \
 	    echo "ERROR: critical directory missing: /usr/include" 1>&2; \
 	    echo "Without this critical directory, we cannot compile." 1>&2; \
 	    echo 1>&2; \
@@ -2191,7 +2191,7 @@ check_include:
 	    echo 1>&2; \
 	    exit 1; \
 	fi
-	$(Q) if [ ! -f /usr/include/stdio.h ]; then \
+	$(Q) if [ ! -f ${INCDIR}/stdio.h ]; then \
 	    echo "ERROR: critical include files are missing" 1>&2; \
 	    echo "Without this critical directory, we cannot compile." 1>&2; \
 	    echo 1>&2; \
diff --git a/custom/Makefile b/custom/Makefile
index be8585a..8b9ffcf 100644
--- a/custom/Makefile
+++ b/custom/Makefile
@@ -348,7 +348,7 @@ EXT=
 
 # The default calc versions
 #
-VERSION= 2.12.6.8
+VERSION= 2.12.6.9
 
 # Names of shared libraries with versions
 #
diff --git a/custom/Makefile.head b/custom/Makefile.head
index 8951507..d8dddf8 100644
--- a/custom/Makefile.head
+++ b/custom/Makefile.head
@@ -348,7 +348,7 @@ EXT=
 
 # The default calc versions
 #
-VERSION= 2.12.6.8
+VERSION= 2.12.6.9
 
 # Names of shared libraries with versions
 #
diff --git a/qio.c b/qio.c
index 478eb47..a63c189 100644
--- a/qio.c
+++ b/qio.c
@@ -253,10 +253,11 @@ qprintnum(NUMBER *q, int outmode)
 		 * does not depend on changing conf->outdigits.
 		 */
 		const int P = conf->outdigits ? conf->outdigits : 1;
+		long olddigits;
 		tmpval = *q;
 		tmpval.num.sign = 0;
 		exp = qilog10(&tmpval);
-		const long olddigits = conf->outdigits;
+		olddigits = conf->outdigits;
 		if (P > exp && exp >= -P) {
 			conf->outdigits = P - 1 - exp;
 			qprintnum(q, MODE_REAL);
diff --git a/version.c b/version.c
index ba1fab5..6d76c75 100644
--- a/version.c
+++ b/version.c
@@ -45,7 +45,7 @@ static char *program;
 #define MAJOR_VER	2	/* major library version */
 #define MINOR_VER	12	/* minor library version */
 #define MAJOR_PATCH	6	/* major software level under library version */
-#define MINOR_PATCH	8	/* minor software level or 0 if not patched */
+#define MINOR_PATCH	9	/* minor software level or 0 if not patched */
 
 
 /*