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stripping: Compress the kept debug info with Zlib

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Xi Ruoyao 2023-09-13 15:39:25 +08:00
parent 48d8f5a51d
commit 80da60f0c0
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1 changed files with 7 additions and 4 deletions
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chapter08/stripping.xml
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@ -29,9 +29,12 @@
needed by the linker (for static libraries) or dynamic linker (for
dynamically linked binaries and shared libraries).</para>
<para>The debugging symbols from selected libraries are preserved
in separate files. That debugging information is needed to run
regression tests with <ulink
<!-- TODO: Zstd is better than Zlib for both speed and size.
Unfortunately Valgrind does not support Zstd-compressed debug
info yet: https://bugs.kde.org/show_bug.cgi?id=469782 -->
<para>The debugging symbols from selected libraries are compressed with
<application>Zlib</application> and preserved in separate files. That
debugging information is needed to run regression tests with <ulink
url='&blfs-book;/general/valgrind.html'>valgrind</ulink> or <ulink
url='&blfs-book;/general/gdb.html'>gdb</ulink> later, in BLFS.
</para>
@ -78,7 +81,7 @@
cd /usr/lib
for LIB in $save_usrlib; do
objcopy --only-keep-debug $LIB $LIB.dbg
objcopy --only-keep-debug --compress-debug-sections=zlib $LIB $LIB.dbg
cp $LIB /tmp/$LIB
strip --strip-unneeded /tmp/$LIB
objcopy --add-gnu-debuglink=$LIB.dbg /tmp/$LIB