Make libsameboy installable, including pkg-config support. Closes LIJ…

…I32#662

Makefile

@@ -41,10 +41,10 @@ ifeq ($(PLATFORM),windows32)
 NULL := NUL
 endif
 
+PREFIX ?= /usr/local
 ifneq ($(shell which xdg-open 2> $(NULL))$(FREEDESKTOP),)
 # Running on an FreeDesktop environment, configure for (optional) installation
 DESTDIR ?= 
-PREFIX ?= /usr/local
 DATA_DIR ?= $(PREFIX)/share/sameboy/
 FREEDESKTOP ?= true
 endif
@@ -114,6 +114,8 @@ BIN := build/bin
 OBJ := build/obj
 INC := build/include/sameboy
 LIBDIR := build/lib
+PKGCONF_DIR := $(LIBDIR)/pkgconfig
+PKGCONF_FILE := $(PKGCONF_DIR)/sameboy.pc
 
 BOOTROMS_DIR ?= $(BIN)/BootROMs
 
@@ -837,7 +839,19 @@ ifeq ($(CONF), release)
 	$(CODESIGN)$@
 endif
 
-
+$(PKGCONF_FILE): sameboy.pc.in
+	-@$(MKDIR) -p $(dir $@)
+	-@rm -f $@
+	sed -e 's,@prefix@,$(PREFIX),' \
+		-e 's/@version@/$(VERSION)/' $< > $@
+
+lib-install: lib $(PKGCONF_FILE)
+	install -d $(DESTDIR)$(PREFIX)/lib/pkgconfig
+	install -d $(DESTDIR)$(PREFIX)/include/sameboy
+	install -m 644 $(LIBDIR)/libsameboy.a $(LIBDIR)/libsameboy.$(DL_EXT) $(DESTDIR)$(PREFIX)/lib/
+	install -m 644 $(INC)/* $(DESTDIR)$(PREFIX)/include/sameboy/
+	install -m 644 $(PKGCONF_FILE) $(DESTDIR)$(PREFIX)/lib/pkgconfig
+
 # Windows dll
 
 # To avoid Windows' sort.exe

sameboy.pc.in

@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=${prefix}
+includedir=${prefix}/include
+libdir=${prefix}/lib
+
+Name: sameboy
+Description: SameBoy's emulation core as a library
+Version: @version@
+Cflags: -I${includedir}
+Libs: -L${libdir} -lsameboy
+Libs.private: -lm -lc