Index: qiv-2.3.2/Makefile
===================================================================
--- qiv-2.3.2.orig/Makefile	2020-09-01 07:26:05.927746040 +0200
+++ qiv-2.3.2/Makefile	2020-09-01 07:26:25.507775561 +0200
@@ -55,6 +55,7 @@
 endif
 
 PKG_CONFIG ?= pkg-config
+INSTALL    ?= install
 #CFLAGS    = -O0 -g -Wall
 CFLAGS    = -O2 -Wall \
 	    -fcaller-saves -ffast-math -fno-strength-reduce \
@@ -145,26 +146,26 @@
 install: $(PROGRAM)
 	@echo "Installing QIV..."
 	@if [ ! -e $(PREFIX)/bin ]; then \
-	  install -d -m 0755 $(PREFIX)/bin; \
+	  $(INSTALL) -d -m 0755 $(PREFIX)/bin; \
 	  echo install -d -m 0755 $(PREFIX)/bin; \
         fi
-	install -s -m 0755 $(PROGRAM) $(PREFIX)/bin
+	$(INSTALL) -s -m 0755 $(PROGRAM) $(PREFIX)/bin
 	@if [ ! -e $(PREFIX)/share/man/man1 ]; then \
 	  echo install -d -m 0755 $(PREFIX)/share/man/man1; \
-	  install -d -m 0755 $(PREFIX)/share/man/man1; \
+	  $(INSTALL) -d -m 0755 $(PREFIX)/share/man/man1; \
 	fi
-	install -m 0644 $(PROGRAM).1 $(PREFIX)/share/man/man1
+	$(INSTALL) -m 0644 $(PROGRAM).1 $(PREFIX)/share/man/man1
 	$(COMPRESS_PROG) $(PREFIX)/share/man/man1/$(PROGRAM).1
 	@if [ ! -e $(PREFIX)/share/pixmaps ]; then \
 	  echo install -d -m 0755 $(PREFIX)/share/pixmaps; \
-	  install -d -m 0755 $(PREFIX)/share/pixmaps; \
+	  $(INSTALL) -d -m 0755 $(PREFIX)/share/pixmaps; \
 	fi
-	install -m 0644 qiv.png $(PREFIX)/share/pixmaps/qiv.png
+	$(INSTALL) -m 0644 qiv.png $(PREFIX)/share/pixmaps/qiv.png
 	@if [ ! -e $(PREFIX)/share/applications ]; then \
 	  echo install -d -m 0755 $(PREFIX)/share/applications; \
-	  install -d -m 0755 $(PREFIX)/share/applications; \
+	  $(INSTALL) -d -m 0755 $(PREFIX)/share/applications; \
 	fi
-	install -m 0644 qiv.desktop $(PREFIX)/share/applications/qiv.desktop
+	$(INSTALL) -m 0644 qiv.desktop $(PREFIX)/share/applications/qiv.desktop
 	@if ./qiv -f ./intro.jpg ; \
 	then echo "-- Test Passed --" ; \
 	else echo "-- Test Failed --" ; \
