Update makefile

dgl/Makefile

@@ -43,7 +43,7 @@ all: $(TARGET)
 
 ../libdgl.a: $(OBJS)
 	rm -f $@
-	ar crs $@ $^
+	$(AR) crs $@ $^
 
 ../libdgl.dll: $(OBJS)
 	# -Wl,--output-def,$@.def,--out-implib,$@.a
@@ -78,3 +78,7 @@ debug:
 	$(MAKE) DEBUG=true
 
 # --------------------------------------------------------------
+
+-include $(OBJS:%.o=%.d)
+
+# --------------------------------------------------------------

dgl/Makefile.mk

@@ -4,6 +4,7 @@
 # Created by falkTX
 #
 
+AR  ?= ar
 CC  ?= gcc
 CXX ?= g++
 
@@ -19,38 +20,41 @@ endif
 endif
 
 # --------------------------------------------------------------
-# Common build and link flags
+# Set build and link flags
 
-BASE_FLAGS = -Wall -Wextra -pipe
-BASE_OPTS  = -O2 -ffast-math -fdata-sections -ffunction-sections
-ifneq ($(NOOPT),true)
-BASE_OPTS  += -mtune=generic -msse -msse2 -mfpmath=sse
+BASE_FLAGS = -Wall -Wextra -pipe -MD -MP
+BASE_OPTS  = -O2 -ffast-math -mtune=generic -msse -msse2 -fdata-sections -ffunction-sections
+
+ifneq ($(MACOS),true)
+# MacOS doesn't support this
+BASE_OPTS += -mfpmath=sse
 endif
-LINK_OPTS  = -fdata-sections -ffunction-sections -Wl,-O1 -Wl,--as-needed -Wl,--gc-sections -Wl,--strip-all
 
 ifeq ($(MACOS),true)
 # MacOS linker flags
 LINK_OPTS  = -fdata-sections -ffunction-sections -Wl,-dead_strip -Wl,-dead_strip_dylibs
+else
+# Common linker flags
+LINK_OPTS  = -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,-O1 -Wl,--as-needed -Wl,--strip-all
 endif
 
 ifeq ($(RASPPI),true)
-# Raspberry-Pi flags
-BASE_OPTS  = -O2 -ffast-math
-ifneq ($(NOOPT),true)
-BASE_OPTS += -march=armv6 -mfpu=vfp -mfloat-abi=hard
-endif
+# Raspberry-Pi optimization flags
+BASE_OPTS  = -O2 -ffast-math -march=armv6 -mfpu=vfp -mfloat-abi=hard
 LINK_OPTS  = -Wl,-O1 -Wl,--as-needed -Wl,--strip-all
 endif
 
 ifeq ($(PANDORA),true)
-# OpenPandora flags
-BASE_OPTS  = -O2 -ffast-math
-ifneq ($(NOOPT),true)
-BASE_OPTS += -march=armv7-a -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
-endif
+# OpenPandora optimization flags
+BASE_OPTS  = -O2 -ffast-math -march=armv7-a -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
 LINK_OPTS  = -Wl,-O1 -Wl,--as-needed -Wl,--strip-all
 endif
 
+ifneq ($(NOOPT),true)
+# No optimization flags
+BASE_OPTS  = -O2 -ffast-math -fdata-sections -ffunction-sections
+endif
+
 ifneq ($(WIN32),true)
 # not needed for Windows
 BASE_FLAGS += -fPIC -DPIC