--- Makefile.install.orig	2026-06-27 23:13:46 UTC
+++ Makefile.install
@@ -72,7 +72,7 @@ INSTALL_TARGETS += cleanup
 
 INSTALL_TARGETS += cleanup
 
-GPRINSTALL_FLAGS = --prefix=$(PREFIX) --sources-subdir=$(INSTALL_INCLUDE_DIR) --lib-subdir=${INSTALL_ALI_DIR} --project-subdir=${INSTALL_PROJECT_DIR} --link-lib-subdir=$(INSTALL_LIBRARY_DIR)
+GPRINSTALL_FLAGS = --prefix=$(PREFIX) --sources-subdir=$(INSTALL_INCLUDE_DIR) --lib-subdir=${INSTALL_ALI_DIR} --project-subdir=${INSTALL_PROJECT_DIR} --link-lib-subdir=$(INSTALL_LIBRARY_DIR) %%GPRINSTALL_FLAGS%%
 
 install: $(INSTALL_TARGETS)