From 200fdab221b2b9bf4954bad9c778512a5134a787 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 18 Feb 2022 20:49:37 -0500
Subject: Updated installation to respect overriden prefix etc

---
 Makefile | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index 40d2712..b1ad36b 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,11 @@ OBJECTS = $(SOURCES:.cc=.o)
 DEPS = $(OBJECTS:.o=.d)
 EXECUTABLE = bible
 LIBRARY = libbible.so
-PREFIX := /usr
+PREFIX ?= /usr
+EXEC_PREFIX ?= $(PREFIX)
+LIBDIR ?= $(EXEC_PREFIX)/lib
+BINDIR ?= $(EXEC_PREFIX)/bin
+INCLUDEDIR ?= $(PREFIX)/include
 
 $(EXECUTABLE): $(OBJECTS)
 	$(CXX) $(OBJECTS) -o $@ $(LDFLAGS)
@@ -21,12 +25,12 @@ test: $(LIBRARY)
 	$(MAKE) -C src/test/ test
 
 install: $(LIBRARY) $(EXECUTABLE)
-	install -d $(DESTDIR)$(PREFIX)/lib/
-	install -m 644 $(LIBRARY) $(DESTDIR)$(PREFIX)/lib/
-	install -d $(DESTDIR)$(PREFIX)/include/
-	install -m 644 src/lib/libbible.h $(DESTDIR)$(PREFIX)/include/
-	install -d $(DESTDIR)$(PREFIX)/bin/
-	install -m 755 $(EXECUTABLE) $(DESTDIR)$(PREFIX)/bin/
+	install -d $(DESTDIR)$(LIBDIR)
+	install -m 644 $(LIBRARY) $(DESTDIR)$(LIBDIR)
+	install -d $(DESTDIR)$(INCLUDEDIR)
+	install -m 644 src/lib/libbible.h $(DESTDIR)$(INCLUDEDIR)
+	install -d $(DESTDIR)$(BINDIR)
+	install -m 755 $(EXECUTABLE) $(DESTDIR)$(BINDIR)
 	install -d $(DESTDIR)`pkg-config --variable=completionsdir bash-completion`
 	install -m 644 bible.bash $(DESTDIR)`pkg-config --variable=completionsdir bash-completion`/$(EXECUTABLE)
 
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