diff options
| -rw-r--r-- | meta/classes/image-mklibs.bbclass | 69 | ||||
| -rw-r--r-- | meta/conf/local.conf.sample | 12 |
2 files changed, 80 insertions, 1 deletions
diff --git a/meta/classes/image-mklibs.bbclass b/meta/classes/image-mklibs.bbclass new file mode 100644 index 000000000..0e72b018c --- /dev/null +++ b/meta/classes/image-mklibs.bbclass @@ -0,0 +1,69 @@ +do_rootfs[depends] += "mklibs-native:do_populate_sysroot" + +IMAGE_PREPROCESS_COMMAND += "mklibs_optimize_image; " + +mklibs_optimize_image_doit() { + rm -rf ${WORKDIR}/mklibs + mkdir -p ${WORKDIR}/mklibs/dest + cd ${IMAGE_ROOTFS} + du -bs > ${WORKDIR}/mklibs/du.before.mklibs.txt + for i in `find .`; do file $i; done \ + | grep ELF \ + | grep "LSB executable" \ + | grep "dynamically linked" \ + | sed "s/:.*//" \ + | sed "s+^\./++" \ + > ${WORKDIR}/mklibs/executables.list + + case ${TARGET_ARCH} in + powerpc | mips ) + dynamic_loader="/lib/ld.so.1" + ;; + x86_64) + dynamic_loader="/lib/ld-linux-x86-64.so.2" + ;; + i586 ) + dynamic_loader="/lib/ld-linux.so.2" + ;; + arm ) + dynamic_loader="/lib/ld-linux.so.3" + ;; + * ) + dynamic_loader="/unknown_dynamic_linker" + ;; + esac + + mklibs -v \ + --ldlib ${dynamic_loader} \ + --sysroot ${PKG_CONFIG_SYSROOT_DIR} \ + --root ${IMAGE_ROOTFS} \ + --target `echo ${TARGET_PREFIX} | sed 's/-$//' ` \ + -d ${WORKDIR}/mklibs/dest \ + `cat ${WORKDIR}/mklibs/executables.list` + + cd ${WORKDIR}/mklibs/dest + for i in * + do + cp $i `find ${IMAGE_ROOTFS} -name $i` + done + + cd ${IMAGE_ROOTFS} + du -bs > ${WORKDIR}/mklibs/du.after.mklibs.txt + + echo rootfs size before mklibs optimization: `cat ${WORKDIR}/mklibs/du.before.mklibs.txt` + echo rootfs size after mklibs optimization: `cat ${WORKDIR}/mklibs/du.after.mklibs.txt` +} + +mklibs_optimize_image() { + for img in ${MKLIBS_OPTIMIZED_IMAGES} + do + if [ "${img}" == "${PN}" ] || [ "${img}" == "all" ] + then + mklibs_optimize_image_doit + break + fi + done +} + + +EXPORT_FUNCTIONS mklibs_optimize_image diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample index d9f7098f0..d61aaebdd 100644 --- a/meta/conf/local.conf.sample +++ b/meta/conf/local.conf.sample @@ -73,10 +73,20 @@ EXTRA_IMAGE_FEATURES_mx31ads = "tools-testapps debug-tweaks" #PACKAGE_CLASSES ?= "package_rpm package_deb package_ipk" PACKAGE_CLASSES ?= "package_rpm package_ipk" +# mklibs library size optimization is more useful to smaller images, +# and less useful for bigger images. Also mklibs library optimization can break the ABI compatibility, so should not be applied to the images which are tobe +# extended or upgraded later. +#This enabled mklibs library size optimization just for the specified image. +#MKLIBS_OPTIMIZED_IMAGES ?= "poky-image-minimal" +#This enable mklibs library size optimization will be for all the images. +#MKLIBS_OPTIMIZED_IMAGES ?= "all" + # A list of additional classes to use when building the system +# include 'image-mklibs' to reduce shared library files size for an image # include 'image-prelink' in order to prelink the filesystem image # include 'image-swab' to perform host system intrusion detection -USER_CLASSES ?= "image-prelink" +# NOTE: if listing mklibs & prelink both, then make sure mklibs is before prelink +USER_CLASSES ?= "image-mklibs image-prelink" # POKYMODE controls the characteristics of the generated packages/images by # telling poky which type of toolchain to use. |