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author | Mike Frysinger <vapier@gentoo.org> | 2012-01-13 14:34:58 -0500 |
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committer | Mike Frysinger <vapier@gentoo.org> | 2012-01-14 16:37:24 -0500 |
commit | 3ae079dc5650e5af73516198b429d56d9131d637 (patch) | |
tree | 86cec4fe177af39d1860ce126d79b3de3edf08a9 | |
parent | ac263977391643f1c147d7e767b5b804ac095d55 (diff) | |
download | portage-3ae079dc5650e5af73516198b429d56d9131d637.tar.gz portage-3ae079dc5650e5af73516198b429d56d9131d637.tar.bz2 portage-3ae079dc5650e5af73516198b429d56d9131d637.zip |
add support for compressing debug sections to save space
Since binutils/gdb can compress the .debug* sections with zlib into
.zdebug*, we should be able to save quite a bit of space -- on my
system, I saw /usr/lib/debug/ go from ~20GB to ~7.5GB.
This requires binutils/gdb to be built with USE=zlib which is why
this defaults to off.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-rwxr-xr-x | bin/ebuild-helpers/prepstrip | 6 | ||||
-rw-r--r-- | man/make.conf.5 | 10 | ||||
-rw-r--r-- | pym/_emerge/EbuildPhase.py | 6 | ||||
-rw-r--r-- | pym/portage/const.py | 2 |
4 files changed, 18 insertions, 6 deletions
diff --git a/bin/ebuild-helpers/prepstrip b/bin/ebuild-helpers/prepstrip index ee547f235..daaa25250 100755 --- a/bin/ebuild-helpers/prepstrip +++ b/bin/ebuild-helpers/prepstrip @@ -15,7 +15,7 @@ exp_tf() { eval ${var}_${flag}=$(tf has ${flag} ${!var}) done } -exp_tf FEATURES installsources nostrip splitdebug +exp_tf FEATURES compressdebug installsources nostrip splitdebug exp_tf RESTRICT binchecks installsources strip [[ " ${FEATURES} " == *" force-prefix "* ]] || \ @@ -121,7 +121,9 @@ save_elf_debug() { if [[ -e ${T}/prepstrip.split.debug ]] ; then mv "${T}"/prepstrip.split.debug "${y}" else - ${OBJCOPY} --only-keep-debug "${x}" "${y}" + local objcopy_flags="--only-keep-debug" + ${FEATURES_compressdebug} && objcopy_flags+=" --compress-debug-sections" + ${OBJCOPY} ${objcopy_flags} "${x}" "${y}" ${OBJCOPY} --add-gnu-debuglink="${y}" "${x}" fi local args="a-x,o-w" diff --git a/man/make.conf.5 b/man/make.conf.5 index f7491a949..e5a9ae1ed 100644 --- a/man/make.conf.5 +++ b/man/make.conf.5 @@ -260,6 +260,12 @@ Log file names have an extension that is appropriate for the compression type. Currently, only \fBgzip\fR(1) compression is supported, so build logs will have a '.gz' extension when this feature is enabled. .TP +.B compressdebug +Compress the debug sections in the split debug files with zlib to save +space. Make sure you have built both binutils and gdb with USE=zlib +support for this to work. See \fBsplitdebug\fR for general split debug +information (upon which this feature depends). +.TP .B config\-protect\-if\-modified This causes the \fBCONFIG_PROTECT\fR behavior to be skipped for files that have not been modified since they were installed. @@ -476,7 +482,9 @@ instead of using \fBPORT_LOGDIR\fR directly. .B splitdebug Prior to stripping ELF etdyn and etexec files, the debugging info is stored for later use by various debuggers. This feature is disabled by -\fBnostrip\fR. For installation of source code, see \fBinstallsources\fR. +\fBnostrip\fR. You should also consider setting \fBcompressdebug\fR so +the files don't suck up a lot of space. For installation of source code, +see \fBinstallsources\fR. .TP .B strict Have portage react strongly to conditions that have the potential to be diff --git a/pym/_emerge/EbuildPhase.py b/pym/_emerge/EbuildPhase.py index ed0be0b0e..27944f413 100644 --- a/pym/_emerge/EbuildPhase.py +++ b/pym/_emerge/EbuildPhase.py @@ -33,11 +33,13 @@ class EbuildPhase(CompositeTask): ("_ebuild_lock",) # FEATURES displayed prior to setup phase - _features_display = ("ccache", "distcc", "distcc-pump", "fakeroot", + _features_display = ( + "ccache", "compressdebug", "distcc", "distcc-pump", "fakeroot", "installsources", "keeptemp", "keepwork", "nostrip", "preserve-libs", "sandbox", "selinux", "sesandbox", "splitdebug", "suidctl", "test", "userpriv", - "usersandbox") + "usersandbox" + ) # Locked phases _locked_phases = ("setup", "preinst", "postinst", "prerm", "postrm") diff --git a/pym/portage/const.py b/pym/portage/const.py index 5fcb24f73..bebb92203 100644 --- a/pym/portage/const.py +++ b/pym/portage/const.py @@ -88,7 +88,7 @@ EBUILD_PHASES = ("pretend", "setup", "unpack", "prepare", "configure" SUPPORTED_FEATURES = frozenset([ "assume-digests", "binpkg-logs", "buildpkg", "buildsyspkg", "candy", "ccache", "chflags", "clean-logs", - "collision-protect", "compress-build-logs", + "collision-protect", "compress-build-logs", "compressdebug", "config-protect-if-modified", "digest", "distcc", "distcc-pump", "distlocks", "ebuild-locks", "fakeroot", "fail-clean", "force-mirror", "force-prefix", "getbinpkg", |