diff --git a/CHANGES b/CHANGES
index 2c5bf3b..cf35442 100644
--- a/CHANGES
+++ b/CHANGES
@@ -51,6 +51,9 @@ Following is the change from calc version 2.10.3t5.38 to date:
     The function version(), now returns a malloced version string
     without the title.
 
+    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
+    into a single section.
+
 
 Following is the change from calc version 2.10.3t5.34 to 2.10.3t5.37:
 
diff --git a/Makefile b/Makefile
index 2704ffe..31481b5 100644
--- a/Makefile
+++ b/Makefile
@@ -556,7 +556,7 @@ CC= ${PURIFY} cc
 #
 ###
 #
-# SGI IRIX6.2 (or later) -n32 (v7.1 or later) Compiler for the R4k
+# SGI IRIX6.2 (or later) -n32 (v7.1 or later) Compiler
 #
 # You must set above:
 #	RANLIB=:
@@ -572,87 +572,19 @@ CC= ${PURIFY} cc
 #
 #CCWARN= -fullwarn -woff 1209
 #CCOPT= ${DEBUG} ${NO_SHARED}
-#CCMISC= -use_readonly_const
+#CCMISC= -rdata_shared
 #
 #CFLAGS= ${CCWARN} ${CCOPT} ${CCMISC}
 #ICFLAGS= ${CCWARN} ${CCMISC}
 #
 #CCMAIN= ${ICFLAGS} ${MAIN}
-#CCSHS= ${CFLAGS}
+#CCSHS=
 #
 #LCFLAGS=
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc -n32 -r4000 -xansi
-#
-###
-#
-# SGI IRIX6.2 (or later) -n32 (v7.1 or later) Compiler for the R5k
-#
-# You must set above:
-#	RANLIB=:
-#
-# for better performance, set the following above:
-#	DEBUG= -O2 -g3
-#
-# If you have the directory /usr/lib32/nonshared, then set the following above:
-#	NO_SHARED= -non_shared
-#	LD_NO_SHARED= -Wl,-rdata_shared
-#
-# woff 1209: cancel 'controlling expression is constant' warnings
-#
-#CCWARN= -fullwarn -woff 1209
-#CCOPT= ${DEBUG} ${NO_SHARED}
-#CCMISC= -use_readonly_const
-#
-#CFLAGS= ${CCWARN} ${CCOPT} ${CCMISC}
-#ICFLAGS= ${CCWARN} ${CCMISC}
-#
-#CCMAIN= ${ICFLAGS} ${MAIN}
-#CCSHS= ${CFLAGS}
-#
-#LCFLAGS=
-#LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
-#ILDFLAGS=
-#
-#CC= ${PURIFY} cc -n32 -r5000 -xansi
-#
-###
-#
-# SGI IRIX6.5 (or later) -n32 (v7.2 or later) Compiler for the R10k
-#
-# NOTE: For Pre IRIX6.5 and pre v7.2 compilers, use:
-#
-#	CCSHS= ${CFLAGS} -OPT:fold_arith_limit=1668
-#
-# You must set above:
-#       RANLIB=:
-#
-# for better performance, set the following above:
-#	DEBUG= -O2 -g3
-#
-# If you have the directory /usr/lib32/nonshared, then set the following above:
-#	NO_SHARED= -non_shared
-#	LD_NO_SHARED= -Wl,-rdata_shared
-#
-# woff 1209: cancel 'controlling expression is constant' warnings
-#
-#CCWARN= -fullwarn -woff 1209
-#CCOPT= ${DEBUG} ${NO_SHARED}
-#CCMISC= -use_readonly_const
-#
-#CFLAGS= ${CCWARN} ${CCOPT} ${CCMISC}
-#ICFLAGS= ${CCWARN} ${CCMISC}
-#
-#CCMAIN= ${ICFLAGS} ${MAIN}
-#CCSHS= ${CFLAGS}
-#
-#LCFLAGS=
-#LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
-#ILDFLAGS=
-#
-#CC= ${PURIFY} cc -n32 -r10000 -mips4 -xansi
+#CC= ${PURIFY} cc -n32 -xansi
 #
 ###
 #
diff --git a/custom/Makefile b/custom/Makefile
index 9b2be67..d8c6f0d 100644
--- a/custom/Makefile
+++ b/custom/Makefile
@@ -470,7 +470,8 @@ install: all
 	else \
 	    true; \
 	fi
-	${Q}for i in ${INSTALL_H_SRC}; do \
+	${Q}for i in ${INSTALL_H_SRC} /dev/null; do \
+		if [ X$$i = X/dev/null ]; then continue; fi; \
 		echo rm -f ${CUSTOMLIBDIR}/$$i; \
 		rm -f ${CUSTOMLIBDIR}/$$i; \
 		echo cp $$i ${CUSTOMLIBDIR}; \
diff --git a/version.c b/version.c
index 2567337..1e73276 100644
--- a/version.c
+++ b/version.c
@@ -12,7 +12,7 @@
 #define MAJOR_VER	2	/* major version */
 #define MINOR_VER	10	/* minor version */
 #define MAJOR_PATCH	3	/* patch level or 0 if no patch */
-#define MINOR_PATCH	"t5.45"	/* test number or empty string if no patch */
+#define MINOR_PATCH	"t5.46"	/* test number or empty string if no patch */
 
 /*
  * calc version constants