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#############################################################
#
# build ccache to make recompiles faster on the build system
#
#############################################################
CCACHE_SITE:=http://ccache.samba.org/ftp/ccache
CCACHE_SOURCE:=ccache-2.3.tar.gz
CCACHE_DIR1:=$(TOOL_BUILD_DIR)/ccache-2.3
CCACHE_DIR2:=$(BUILD_DIR)/ccache-2.3
CCACHE_CAT:=zcat
CCACHE_BINARY:=ccache
CCACHE_TARGET_BINARY:=usr/bin/ccache

$(DL_DIR)/$(CCACHE_SOURCE):
	$(WGET) -P $(DL_DIR) $(CCACHE_SITE)/$(CCACHE_SOURCE)

$(CCACHE_DIR1)/.unpacked: $(DL_DIR)/$(CCACHE_SOURCE)
	$(CCACHE_CAT) $(DL_DIR)/$(CCACHE_SOURCE) | tar -C $(TOOL_BUILD_DIR) -xvf -
	touch $(CCACHE_DIR1)/.unpacked

$(CCACHE_DIR1)/.patched: $(CCACHE_DIR1)/.unpacked
	$(SED) "s,getenv(\"CCACHE_PATH\"),\"$(STAGING_DIR)/usr/bin\",g" \
		$(CCACHE_DIR1)/execute.c
	$(SED) "s,getenv(\"CCACHE_DIR\"),\"$(CCACHE_DIR1)/cache\",g" \
		$(CCACHE_DIR1)/ccache.c
	mkdir -p $(CCACHE_DIR1)/cache
	touch $(CCACHE_DIR1)/.patched

$(CCACHE_DIR1)/.configured: $(CCACHE_DIR1)/.patched
	mkdir -p $(CCACHE_DIR1)
	(cd $(CCACHE_DIR1); rm -rf config.cache; \
		CC=$(HOSTCC) \
		$(CCACHE_DIR1)/configure \
		--target=$(GNU_HOST_NAME) \
		--host=$(GNU_HOST_NAME) \
		--build=$(GNU_HOST_NAME) \
		--prefix=/usr \
	);
	touch $(CCACHE_DIR1)/.configured

$(CCACHE_DIR1)/$(CCACHE_BINARY): $(CCACHE_DIR1)/.configured
	$(MAKE) CC=$(HOSTCC) -C $(CCACHE_DIR1)

$(STAGING_DIR)/$(CCACHE_TARGET_BINARY): $(CCACHE_DIR1)/$(CCACHE_BINARY)
	mkdir -p $(STAGING_DIR)/usr/bin;
	mkdir -p $(TOOL_BUILD_DIR)/.ccache;
	cp $(CCACHE_DIR1)/ccache $(STAGING_DIR)/usr/bin
	(cd $(STAGING_DIR)/usr/bin; \
		ln -fs $(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc $(OPTIMIZE_FOR_CPU)-linux-gcc; \
		ln -fs $(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc $(OPTIMIZE_FOR_CPU)-linux-cc; \
		ln -fs $(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc $(OPTIMIZE_FOR_CPU)-linux-uclibc-cc);
	[ -f $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc ] && \
		mv $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc $(STAGING_DIR)/usr/bin/
	(cd $(STAGING_DIR)/bin; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-cc; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-gcc; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-uclibc-cc; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-uclibc-gcc);
ifeq ($(INSTALL_LIBSTDCPP),true)
	[ -f $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-c++ ] && \
		mv $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-c++ $(STAGING_DIR)/usr/bin/
	[ -f $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-g++ ] && \
		mv $(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-g++  $(STAGING_DIR)/usr/bin/
	(cd $(STAGING_DIR)/bin; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-c++; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-g++;\
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-uclibc-c++; \
		ln -fs ../usr/bin/ccache $(OPTIMIZE_FOR_CPU)-linux-uclibc-g++);
endif

ifeq ($(GCC_2_95_TOOLCHAIN),true)
ccache: gcc2_95 $(STAGING_DIR)/$(CCACHE_TARGET_BINARY)
else
ccache: gcc3_3 $(STAGING_DIR)/$(CCACHE_TARGET_BINARY)
endif

ccache-clean:
	$(MAKE) -C $(CCACHE_DIR1) uninstall
	-$(MAKE) -C $(CCACHE_DIR1) clean

ccache-dirclean:
	rm -rf $(CCACHE_DIR1)




#############################################################
#
# build ccache for use on the target system
#
#############################################################

$(CCACHE_DIR2)/.unpacked: $(DL_DIR)/$(CCACHE_SOURCE)
	$(CCACHE_CAT) $(DL_DIR)/$(CCACHE_SOURCE) | tar -C $(BUILD_DIR) -xvf -
	touch $(CCACHE_DIR2)/.unpacked

$(CCACHE_DIR2)/.patched: $(CCACHE_DIR2)/.unpacked
	touch $(CCACHE_DIR2)/.patched

$(CCACHE_DIR2)/.configured: $(CCACHE_DIR2)/.patched
	mkdir -p $(CCACHE_DIR2)
	(cd $(CCACHE_DIR2); rm -rf config.cache; \
		$(TARGET_CONFIGURE_OPTS) \
		$(CCACHE_DIR2)/configure \
		--target=$(GNU_TARGET_NAME) \
		--host=$(GNU_TARGET_NAME) \
		--build=$(GNU_HOST_NAME) \
		--prefix=/usr \
		--exec-prefix=/usr \
		--bindir=/usr/bin \
		--sbindir=/usr/sbin \
		--libexecdir=/usr/lib \
		--sysconfdir=/etc \
		--datadir=/usr/share \
		--localstatedir=/var \
		--mandir=/usr/man \
		--infodir=/usr/info \
		$(DISABLE_NLS) \
	);
	touch $(CCACHE_DIR2)/.configured

$(CCACHE_DIR2)/$(CCACHE_BINARY): $(CCACHE_DIR2)/.configured
	$(MAKE) -C $(CCACHE_DIR2)

$(TARGET_DIR)/$(CCACHE_TARGET_BINARY): $(CCACHE_DIR2)/$(CCACHE_BINARY)
	$(MAKE) DESTDIR=$(TARGET_DIR) -C $(CCACHE_DIR2) install
	rm -rf $(TARGET_DIR)/share/locale $(TARGET_DIR)/usr/info \
		$(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/doc
	# put a bunch of symlinks into /bin, since that is earlier
	# in the default PATH than /usr/bin where gcc lives
	(cd $(TARGET_DIR)/usr/bin; ln -fs gcc cc)
	(cd $(TARGET_DIR)/bin; \
		ln -fs /usr/bin/ccache cc; \
		ln -fs /usr/bin/ccache gcc; \
		ln -fs /usr/bin/ccache c++; \
		ln -fs /usr/bin/ccache g++;)

ccache_target: uclibc $(TARGET_DIR)/$(CCACHE_TARGET_BINARY)

ccache_target-sources: $(DL_DIR)/$(CCACHE_SOURCE)

ccache_target-clean:
	$(MAKE) DESTDIR=$(TARGET_DIR) -C $(CCACHE_DIR2) uninstall
	-$(MAKE) -C $(CCACHE_DIR2) clean

ccache_target-dirclean:
	rm -rf $(CCACHE_DIR2)