Multiple QA issues:
* Respect CXXFLAGS,LDFLAGS
* fix parallel build
* configure recursively
* don't strip binaries
* don't unpack libgfx during make

http://bugs.gentoo.org/show_bug.cgi?id=336814

--- configure.ac
+++ configure.ac
@@ -2,6 +2,7 @@
 AC_INIT(fireflies, 2.07, guy@somewhere.fscked.org)
 AC_CONFIG_SRCDIR([src/arrow.cc])
 AC_CONFIG_HEADER([config.h])
+AC_CONFIG_SUBDIRS([libgfx])
 
 sys=`uname`
 
--- Makefile
+++ Makefile
@@ -21,18 +21,17 @@
 win32/
 
 all:	libgfx/src/libgfx.a
-	cd src && make
+	$(MAKE) -C src
 
 libgfx/src/libgfx.a:
-	gunzip -c libgfx-1.0.1.tar.gz | tar x
-	cd libgfx && ./configure && cd src && make
+	$(MAKE) -C libgfx/src
 
 install: all
 	sh ./installit $(DESTDIR)
 
 clean:
-	make -C src clean
-	make -C win32 clean
+	$(MAKE) -C src clean
+	$(MAKE) -C win32 clean
 
 dist:
 	rm -rf fireflies-$(VERSION)
@@ -42,7 +41,7 @@
 
 	# need Make.include temporarily to run make
 	cp Make.include fireflies-$(VERSION)
-	make -C fireflies-$(VERSION) clean
+	$(MAKE) -C fireflies-$(VERSION) clean
 	rm -f fireflies-$(VERSION)/Make.include
 
 	# don't want to include debian's buildroot
--- src/Makefile
+++ src/Makefile
@@ -8,8 +8,7 @@
 all:	$(PROGRAM)
 
 $(PROGRAM):	$(OBJECTS)
-	$(CXX) -o $(PROGRAM) $(OBJECTS) $(LIBS)
-	strip $(PROGRAM)
+	$(CXX) $(LDFLAGS) -o $(PROGRAM) $(OBJECTS) $(LIBS)
 
 $(OBJECTS): $(HEADERS)
 
@@ -17,7 +16,7 @@
 .SUFFIXES: .cc .rc .o
 
 .cc.o:
-	$(CXX) -c $(CFLAGS) -o $@ $<
+	$(CXX) -c $(CXXFLAGS) -o $@ $<
 
 #$(HEADERS_GCH): %.h.gch: %.h
 #	$(CXX) -c -x c++-header $(CFLAGS) -o $@ $<
--- Make.include.in
+++ Make.include.in
@@ -5,7 +5,7 @@
 GL_LIBS = @GL_LIBS@
 OPT_LIBS = @OPT_LIBS@
 
-CFLAGS = -Wall -I../libgfx/include/ $(SDL_CFLAGS) @CFLAGS@
+CXXFLAGS = -Wall -I../libgfx/include/ $(SDL_CFLAGS) @CXXFLAGS@
 LIBS = ../libgfx/src/libgfx.a $(GL_LIBS) $(SDL_LIBS) $(OPT_LIBS) @LIBS@
 
 OBJECTS = arrow.o bait.o firefly.o scene.o tail.o utils.o modes.o @OPT_OBJS@