pkg/ucglib: clean build system integration

And leave the original repository untouched (except for patches)

pkg/ucglib/Makefile

@@ -5,9 +5,11 @@ PKG_LICENSE=BSD-2-Clause
 
 include $(RIOTBASE)/pkg/pkg.mk
 
-all:
-	cp -u src/Makefile $(PKG_BUILDDIR)/Makefile
-	cp -u src/csrc/Makefile $(PKG_BUILDDIR)/csrc/Makefile
-	cp -u src/csrc/ucg_riotos.c $(PKG_BUILDDIR)/csrc/ucg_riotos.c
-	cp -u src/sys/sdl/dev/Makefile $(PKG_BUILDDIR)/sys/sdl/dev/Makefile
-	"$(MAKE)" -C $(PKG_BUILDDIR)
+.PHONY: ucglib_sdl
+
+all: $(filter ucglib_sdl,$(USEMODULE))
+	"$(MAKE)" -C $(PKG_BUILDDIR) -f $(CURDIR)/Makefile.ucglib
+	"$(MAKE)" -C $(PKG_BUILDDIR)/csrc -f $(CURDIR)/Makefile.ucglib_csrc
+
+ucglib_sdl:
+	"$(MAKE)" -C $(PKG_BUILDDIR)/sys/sdl/dev -f $(CURDIR)/Makefile.ucglib_sdl

pkg/ucglib/Makefile.dep

@@ -0,0 +1,2 @@
+USEMODULE += ucglib_riot
+USEMODULE += ucglib_csrc

pkg/ucglib/Makefile.include

@@ -2,5 +2,7 @@ INCLUDES += -I$(PKGDIRBASE)/ucglib/csrc
 
 # Link SDL if enabled.
 ifneq (,$(filter ucglib_sdl,$(USEMODULE)))
-  LINKFLAGS += `sdl2-config --libs`
+  LINKFLAGS += $(shell sdl2-config --libs)
 endif
+
+DIRS += $(RIOTBASE)/pkg/ucglib/contrib

pkg/ucglib/Makefile.ucglib_csrc

@@ -0,0 +1,11 @@
+MODULE = ucglib_csrc
+
+CFLAGS += -Wno-unused
+
+ifeq (llvm,$(TOOLCHAIN))
+  CFLAGS += -Wno-misleading-indentation
+  CFLAGS += -Wno-unused-parameter
+  CFLAGS += -Wno-newline-eof
+endif
+
+include $(RIOTBASE)/Makefile.base

pkg/ucglib/Makefile.ucglib_sdl

@@ -0,0 +1,14 @@
+MODULE = ucglib_sdl
+
+# Ignore warnings generated when compiling this module.
+CFLAGS += -Wno-empty-translation-unit \
+          -Wno-newline-eof \
+          -Wno-unused-parameter \
+          -Wno-unused \
+          -Wno-overlength-strings \
+          -Wno-pointer-arith
+
+# Configure SDL2 CFLAGS
+CFLAGS +=  $(shell sdl2-config --cflags)
+
+include $(RIOTBASE)/Makefile.base

pkg/ucglib/contrib/Makefile

@@ -0,0 +1,5 @@
+MODULE = ucglib_riot
+
+CFLAGS += -Wno-unused-function
+
+include $(RIOTBASE)/Makefile.base

pkg/ucglib/src/Makefile

@@ -1,19 +0,0 @@
-MODULE = pkg-ucglib
-
-DIRS += csrc
-
-# SDL can be used as a virtual display, but is for native target only.
-ifneq (,$(filter ucglib_sdl,$(USEMODULE)))
-  DIRS += sys/sdl/dev
-endif
-
-# Compiling Ucglib will generate a lot of compiler warnings, which are treated
-# as errors. For the sake of simplicity, ignore them.
-CFLAGS += -Wno-empty-translation-unit \
-          -Wno-newline-eof \
-          -Wno-unused-parameter \
-          -Wno-unused \
-          -Wno-overlength-strings \
-          -Wno-pointer-arith
-
-include $(RIOTBASE)/Makefile.base

pkg/ucglib/src/sys/sdl/dev/Makefile

@@ -1,5 +0,0 @@
-MODULE = ucglib_sdl
-
-CFLAGS += `sdl2-config --cflags`
-
-include $(RIOTBASE)/Makefile.base