From 4877f618d664f53694132b91fc7712844566bfbb Mon Sep 17 00:00:00 2001
From: Dominik Riebeling <Dominik.Riebeling@gmail.com>
Date: Sat, 11 May 2013 20:25:15 +0200
Subject: [PATCH] Rework rbspeex dependency generation to use single dependency
 files.

Similar as done in d2b8f91 change dependency generation to use one file per
source file. This removes the need to have external tools installed on Windows.
Previously Cygwin or msys tools needed to be in the system PATH which was
problematic at times.

This means that now building on Windows (using MinGW) doesn't require
additional tools anymore.

Change-Id: I4c0675e99c3cc3a729b91beefd58320db498ae0a
---
 tools/rbspeex/Makefile | 30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/tools/rbspeex/Makefile b/tools/rbspeex/Makefile
index 24a0cedd8c..713111dd2e 100644
--- a/tools/rbspeex/Makefile
+++ b/tools/rbspeex/Makefile
@@ -70,31 +70,21 @@ TARGET_DIR ?= $(shell pwd)/
 BUILD_DIR ?= $(TARGET_DIR)build$(COMPILETARGET)
 SOURCES = $(SRC:%.c=$(SPEEXSRC)/%.c) rbspeex.c rbspeexenc.c rbspeexdec.c
 OBJS = $(addprefix $(BUILD_DIR)/,$(SRC:%.c=%.o))
-DEPFILE = $(BUILD_DIR)/dep-speex
 DIRS = 
 
 .PHONY : all
 
 all: ../rbspeexenc ../rbspeexdec
 
-$(DEPFILE): $(SOURCES)
-	@echo MKDIR $(BUILD_DIR)
-	$(SILENT)mkdir -p $(BUILD_DIR)
-	@echo Creating dependencies
-	$(SILENT)rm -f $(DEPFILE)
-	$(SILENT)(for each in $(SOURCES) x; do \
-	    if test "x" != "$$each"; then \
-	        obj=`echo $$each | sed -e 's/\.[cS]/.o/' | sed -e 's/^.*\///' `; \
-	        $(CC) -MG -MM -MT "$(BUILD_DIR)/$$obj" $(CFLAGS) $$each 2>/dev/null; \
-	    fi; \
-	    if test -n "$$del"; then \
-	        rm $$del; \
-	        del=""; \
-	    fi \
-	done > $(DEPFILE); \
-	echo "oo" > /dev/null )
+$(foreach src,$(SOURCES),$(eval $(BUILD_DIR)/$(subst .c,.o,$(notdir $(src))): $(src)))
+$(foreach src,$(SOURCES),$(eval $(BUILD_DIR)/$(subst .c,.d,$(notdir $(src))): $(src)))
+DEPS = $(addprefix $(BUILD_DIR)/,$(subst .c,.d,$(notdir $(SOURCES))))
+-include $(DEPS)
 
-include $(DEPFILE)
+%.d:
+	@echo DEP $(notdir $@)
+	$(SILENT)$(call mkdir,$(BUILD_DIR))
+	$(SILENT)$(CC) -MG -MM -MT $(subst .d,.o,$@) $(CFLAGS) -o $(BUILD_DIR)/$(notdir $@) $<
 
 dll: $(TARGET_DIR)rbspeex.dll
 	
@@ -105,7 +95,6 @@ $(TARGET_DIR)rbspeex.dll: $(OBJS) $(BUILD_DIR)/rbspeex.o
 
 $(TARGET_DIR)librbspeex.a: $(OBJS) $(BUILD_DIR)/rbspeex.o
 	@echo AR $(notdir $@)
-	$(SILENT)rm -f $@
 	$(SILENT)$(CROSS)$(AR) rcs $@ $^ > /dev/null 2>&1
 
 librbspeex.a: $(TARGET_DIR)librbspeex.a
@@ -125,7 +114,8 @@ librbspeex.a: $(TARGET_DIR)librbspeex.a
 	$(SILENT)$(CROSS)$(CC) $(CFLAGS) $(ARCHFLAGS) -c $< -o $@
 
 clean:
-	rm -f $(OBJS) $(TARGET_DIR)librbspeex* ../rbspeexenc ../rbspeexdec $(TARGET_DIR)dep-speex
+	rm -f $(OBJS) $(TARGET_DIR)librbspeex* ../rbspeexenc ../rbspeexdec
+	rm -f $(DEPS)
 	rm -rf build*
 
 $(BUILD_DIR):