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authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-06 12:00:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-06 12:00:25 -0700
commitcff11abeca78aa782378401ca2800bd2194aa14e (patch)
treefef5d11fd49bc91e49116d9935fc7f23d340716f /lib
parent6f2dc3d335457d9c815be9f4fd3dc8eff92fcef7 (diff)
parent8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294 (diff)
downloadlinux-cff11abeca78aa782378401ca2800bd2194aa14e.tar.bz2
Merge tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - fix warnings in 'make clean' for ARCH=um, hexagon, h8300, unicore32 - ensure to rebuild all objects when the compiler is upgraded - exclude system headers from dependency tracking and fixdep processing - fix potential bit-size mismatch between the kernel and BPF user-mode helper - add the new syntax 'userprogs' to build user-space programs for the target architecture (the same arch as the kernel) - compile user-space sample code under samples/ for the target arch instead of the host arch - make headers_install fail if a CONFIG option is leaked to user-space - sanitize the output format of scripts/checkstack.pl - handle ARM 'push' instruction in scripts/checkstack.pl - error out before modpost if a module name conflict is found - error out when multiple directories are passed to M= because this feature is broken for a long time - add CONFIG_DEBUG_INFO_COMPRESSED to support compressed debug info - a lot of cleanups of modpost - dump vmlinux symbols out into vmlinux.symvers, and reuse it in the second pass of modpost - do not run the second pass of modpost if nothing in modules is updated - install modules.builtin(.modinfo) by 'make install' as well as by 'make modules_install' because it is useful even when CONFIG_MODULES=n - add new command line variables, GZIP, BZIP2, LZOP, LZMA, LZ4, and XZ to allow users to use alternatives such as pigz, pbzip2, etc. * tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (96 commits) kbuild: add variables for compression tools Makefile: install modules.builtin even if CONFIG_MODULES=n mksysmap: Fix the mismatch of '.L' symbols in System.map kbuild: doc: rename LDFLAGS to KBUILD_LDFLAGS modpost: change elf_info->size to size_t modpost: remove is_vmlinux() helper modpost: strip .o from modname before calling new_module() modpost: set have_vmlinux in new_module() modpost: remove mod->skip struct member modpost: add mod->is_vmlinux struct member modpost: remove is_vmlinux() call in check_for_{gpl_usage,unused}() modpost: remove mod->is_dot_o struct member modpost: move -d option in scripts/Makefile.modpost modpost: remove -s option modpost: remove get_next_text() and make {grab,release_}file static modpost: use read_text_file() and get_line() for reading text files modpost: avoid false-positive file open error modpost: fix potential mmap'ed file overrun in get_src_version() modpost: add read_text_file() and get_line() helpers modpost: do not call get_modinfo() for vmlinux(.o) ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index b9a450b1fbf7..9bd4eb7f5ec1 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -213,6 +213,23 @@ config DEBUG_INFO_REDUCED
DEBUG_INFO build and compile times are reduced too.
Only works with newer gcc versions.
+config DEBUG_INFO_COMPRESSED
+ bool "Compressed debugging information"
+ depends on DEBUG_INFO
+ depends on $(cc-option,-gz=zlib)
+ depends on $(as-option,-Wa$(comma)--compress-debug-sections=zlib)
+ depends on $(ld-option,--compress-debug-sections=zlib)
+ help
+ Compress the debug information using zlib. Requires GCC 5.0+ or Clang
+ 5.0+, binutils 2.26+, and zlib.
+
+ Users of dpkg-deb via scripts/package/builddeb may find an increase in
+ size of their debug .deb packages with this config set, due to the
+ debug info being compressed with zlib, then the object files being
+ recompressed with a different compression scheme. But this is still
+ preferable to setting $KDEB_COMPRESS to "none" which would be even
+ larger.
+
config DEBUG_INFO_SPLIT
bool "Produce split debuginfo in .dwo files"
depends on DEBUG_INFO