--- ladspa_sdk_1.15/src/Makefile.orig	2021-08-27 13:41:25.662036175 +0300

+++ ladspa_sdk_1.15/src/Makefile	2021-08-27 13:46:05.599826244 +0300

@@ -4,9 +4,10 @@

 #

 # Change these if you want to install somewhere else.

-INSTALL_PLUGINS_DIR	=	/usr/lib/ladspa/

-INSTALL_INCLUDE_DIR	=	/usr/include/

-INSTALL_BINARY_DIR	=	/usr/bin/

+PREFIX			=	/usr

+INSTALL_PLUGINS_DIR	=	$(PREFIX)/lib/ladspa/

+INSTALL_INCLUDE_DIR	=	$(PREFIX)/include/

+INSTALL_BINARY_DIR	=	$(PREFIX)/bin/

 ###############################################################################

 #

@@ -75,12 +76,12 @@

 	@echo Test complete.

 install:	targets

-	-mkdir -p $(INSTALL_PLUGINS_DIR)

-	-mkdir -p $(INSTALL_INCLUDE_DIR)

-	-mkdir -p $(INSTALL_BINARY_DIR)

-	cp ../plugins/* $(INSTALL_PLUGINS_DIR)

-	cp ladspa.h $(INSTALL_INCLUDE_DIR)

-	cp ../bin/* $(INSTALL_BINARY_DIR)

+	-mkdir -p $(DESTDIR)$(INSTALL_PLUGINS_DIR)

+	-mkdir -p $(DESTDIR)$(INSTALL_INCLUDE_DIR)

+	-mkdir -p $(DESTDIR)$(INSTALL_BINARY_DIR)

+	cp ../plugins/* $(DESTDIR)$(INSTALL_PLUGINS_DIR)

+	cp ladspa.h $(DESTDIR)$(INSTALL_INCLUDE_DIR)

+	cp ../bin/* $(DESTDIR)$(INSTALL_BINARY_DIR)

 /tmp/test.wav:	targets ../snd/noise.wav

 	../bin/listplugins