support using ccache within the target system

diff --git a/make/ccache.mk b/make/ccache.mk
new file mode 100644 (file)
index 0000000..65e88e1
--- /dev/null
+++ b/make/ccache.mk
@@ -0,0 +1,70 @@
+#############################################################
+#
+# 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_DIR:=$(TOOL_BUILD_DIR)/ccache-2.3
+CCACHE_DIR2:=$(BUILD_DIR)/ccache-2.3
+CCACHE_CAT:=zcat
+CCACHE_BINARY:=ccache
+CCACHE_TARGET_BINARY:=usr/bin/ccache
+
+CCACHE_DIR1:=$(TOOL_BUILD_DIR)/ccache-build
+$(DL_DIR)/$(CCACHE_SOURCE):
+       $(WGET) -P $(DL_DIR) $(CCACHE_SITE)/$(CCACHE_SOURCE)
+
+$(CCACHE_DIR)/.unpacked: $(DL_DIR)/$(CCACHE_SOURCE)
+       $(CCACHE_CAT) $(DL_DIR)/$(CCACHE_SOURCE) | tar -C $(TOOL_BUILD_DIR) -xvf -
+       touch $(CCACHE_DIR)/.unpacked
+
+$(CCACHE_DIR)/.patched: $(CCACHE_DIR)/.unpacked
+       touch $(CCACHE_DIR)/.patched
+
+$(CCACHE_DIR2)/.configured: $(CCACHE_DIR)/.patched
+       mkdir -p $(CCACHE_DIR2)
+       (cd $(CCACHE_DIR2); rm -rf config.cache; \
+               $(TARGET_CONFIGURE_OPTS) \
+               $(CCACHE_DIR)/configure \
+               --target=$(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)/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-clean:
+       $(MAKE) DESTDIR=$(TARGET_DIR) -C $(CCACHE_DIR2) uninstall
+       -$(MAKE) -C $(CCACHE_DIR2) clean
+
+ccache_target-dirclean:
+       rm -rf $(CCACHE_DIR2)
+