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-rw-r--r--Config.in8
-rw-r--r--package/Makefile35
2 files changed, 43 insertions, 0 deletions
diff --git a/Config.in b/Config.in
index 18aafda3a7..9879c7d9c0 100644
--- a/Config.in
+++ b/Config.in
@@ -126,6 +126,14 @@ choice
endchoice
+config USE_MKLIBS
+ bool "Strip unnecessary functions from libraries"
+ help
+ Reduces libraries to only those functions that are necessary for using all
+ selected packages (including those selected as <M>)
+ Note that this will make the system libraries incompatible with most of the packages
+ that are not selected during the build process
+
comment "Package build options"
config DEBUG
diff --git a/package/Makefile b/package/Makefile
index b7337a6840..362a63cc8e 100644
--- a/package/Makefile
+++ b/package/Makefile
@@ -25,6 +25,40 @@ $(curdir)/install:=$(curdir)/install-cleanup
$(curdir)/cleanup: $(TMP_DIR)/.build
rm -rf $(TARGET_DIR) $(STAGING_DIR_ROOT)
+ifdef CONFIG_USE_MKLIBS
+ define mklibs
+ rm -rf $(TMP_DIR)/mklibs-progs $(TMP_DIR)/mklibs-out
+ # first find all programs and add them to the mklibs list
+ find $(STAGING_DIR_ROOT) -type f -perm +100 -exec \
+ file -r -N -F '' {} + | \
+ awk ' /executable.*dynamically/ { print $$1 }' > $(TMP_DIR)/mklibs-progs
+ # find all loadable objects that are not regular libraries and add them to the list as well
+ find $(STAGING_DIR_ROOT) -type f -name \*.so\* -exec \
+ file -r -N -F '' {} + | \
+ awk ' /shared object/ { print $$1 }' >> $(TMP_DIR)/mklibs-progs
+ mkdir -p $(TMP_DIR)/mklibs-out
+ $(STAGING_DIR_HOST)/bin/mklibs.py -D -v \
+ -d $(TMP_DIR)/mklibs-out \
+ --sysroot $(STAGING_DIR_ROOT) \
+ -L /lib \
+ -L /usr/lib \
+ --ldlib $(patsubst $(STAGING_DIR_ROOT)/%,/%,$(firstword $(wildcard \
+ $(foreach name,ld-uClibc.so.* ld-linux.so.*, \
+ $(STAGING_DIR_ROOT)/lib/$(name) \
+ )))) \
+ --target $(REAL_GNU_TARGET_NAME) \
+ `cat $(TMP_DIR)/mklibs-progs` 2>&1
+ $(RSTRIP) $(TMP_DIR)/mklibs-out
+ for lib in `ls $(TMP_DIR)/mklibs-out/*.so.* 2>/dev/null`; do \
+ LIB="$${lib##*/}"; \
+ DEST="`ls "$(TARGET_DIR)/lib/$$LIB" "$(TARGET_DIR)/usr/lib/$$LIB" 2>/dev/null`"; \
+ [ -n "$$DEST" ] || continue; \
+ echo "Copying stripped library $$lib to $$DEST"; \
+ cp "$$lib" "$$DEST" || exit 1; \
+ done
+ endef
+endif
+
$(curdir)/rootfs-prepare: $(TMP_DIR)/.build
@-$(MAKE) package/preconfig
@if [ -d $(TOPDIR)/files ]; then \
@@ -42,6 +76,7 @@ $(curdir)/rootfs-prepare: $(TMP_DIR)/.build
@-find $(TARGET_DIR) -name .svn | $(XARGS) rm -rf
@-find $(TARGET_DIR) -name '.#*' | $(XARGS) rm -f
$(if $(CONFIG_CLEAN_IPKG),rm -rf $(TARGET_DIR)/usr/lib/ipkg)
+ $(call mklibs)
$(curdir)/index: FORCE
@(cd $(PACKAGE_DIR); $(SCRIPT_DIR)/ipkg-make-index.sh . > Packages && \