https://github.com/apertium/apertium-isl/commit/2b36fe44157a6844d0b5f592db361622dc296bab
Correct install path

Index: Makefile.am
--- Makefile.am.orig
+++ Makefile.am
@@ -59,11 +59,13 @@ EXTRA_DIST=$(BASENAME).$(LANG1).dix		\
 ###############################################################################
 #
 #   apertium_isl_dir: This is where the compiled binaries go
-#   apertium_isl_srcdir: This is where the source files go
 
 apertium_isldir=$(prefix)/share/apertium/$(BASENAME)/
 
-apertium_isl_DATA=$(TARGETS_COMMON) $(LANG1).prob
+apertium_isl_DATA=$(TARGETS_COMMON) $(LANG1).prob \
+	$(BASENAME).$(LANG1).dix \
+	$(BASENAME).$(LANG1).rlx \
+	$(BASENAME).post-$(LANG1).dix
 
 pkgconfigdir = $(prefix)/share/pkgconfig
 pkgconfig_DATA = $(BASENAME).pc
@@ -71,10 +73,6 @@ pkgconfig_DATA = $(BASENAME).pc
 noinst_DATA=modes/$(LANG1)-morph.mode
 
 install-data-local: install-modes
-	$(INSTALL_DATA) $(LANG1).prob $(DESTDIR)$(apertium_isl_srcdir)
-	$(INSTALL_DATA) $(BASENAME).$(LANG1).dix $(DESTDIR)$(apertium_isl_srcdir)
-	$(INSTALL_DATA) $(BASENAME).$(LANG1).rlx $(DESTDIR)$(apertium_isl_srcdir)
-	$(INSTALL_DATA) $(BASENAME).post-$(LANG1).dix $(DESTDIR)$(apertium_isl_srcdir)
 
 CLEANFILES = $(TARGETS_COMMON)
 clean-local:
