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| author | Fangrui Song <maskray@google.com> | 2022-09-26 19:50:13 -0700 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2022-09-26 19:50:13 -0700 |
| commit | 2cac01e3ffff74898c54fa5e6418817f5578adb6 (patch) | |
| tree | c0209ba03d922dae339056488493fc16ebefe6d0 /ld/Makefile.am | |
| parent | e122316b7ce78b999db944d7b524e11d642e2a49 (diff) | |
| download | gdb-2cac01e3ffff74898c54fa5e6418817f5578adb6.zip gdb-2cac01e3ffff74898c54fa5e6418817f5578adb6.tar.gz gdb-2cac01e3ffff74898c54fa5e6418817f5578adb6.tar.bz2 | |
binutils, gdb: support zstd compressed debug sections
PR29397 PR29563: Add new configure option --with-zstd which defaults to
auto. If pkgconfig/libzstd.pc is found, define HAVE_ZSTD and support
zstd compressed debug sections for most tools.
* bfd: for addr2line, objdump --dwarf, gdb, etc
* gas: support --compress-debug-sections=zstd
* ld: support ELFCOMPRESS_ZSTD input and --compress-debug-sections=zstd
* objcopy: support ELFCOMPRESS_ZSTD input for
--decompress-debug-sections and --compress-debug-sections=zstd
* gdb: support ELFCOMPRESS_ZSTD input. The bfd change references zstd
symbols, so gdb has to link against -lzstd in this patch.
If zstd is not supported, ELFCOMPRESS_ZSTD input triggers an error. We
can avoid HAVE_ZSTD if binutils-gdb imports zstd/ like zlib/, but this
is too heavyweight, so don't do it for now.
```
% ld/ld-new a.o
ld/ld-new: a.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support
...
% ld/ld-new a.o --compress-debug-sections=zstd
ld/ld-new: --compress-debug-sections=zstd: ld is not built with zstd support
% binutils/objcopy --compress-debug-sections=zstd a.o b.o
binutils/objcopy: --compress-debug-sections=zstd: binutils is not built with zstd support
% binutils/objcopy b.o --decompress-debug-sections
binutils/objcopy: zstd.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support
...
```
Diffstat (limited to 'ld/Makefile.am')
| -rw-r--r-- | ld/Makefile.am | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/ld/Makefile.am b/ld/Makefile.am index d31021c..bbe25f3 100644 --- a/ld/Makefile.am +++ b/ld/Makefile.am @@ -45,7 +45,7 @@ ELF_CLFAGS=-DELF_LIST_OPTIONS=@elf_list_options@ \ -DELF_PLT_UNWIND_LIST_OPTIONS=@elf_plt_unwind_list_options@ WARN_CFLAGS = @WARN_CFLAGS@ NO_WERROR = @NO_WERROR@ -AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS) $(JANSSON_CFLAGS) +AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS) $(JANSSON_CFLAGS) $(ZSTD_CFLAGS) # We put the scripts in the directory $(scriptdir)/ldscripts. # We can't put the scripts in $(datadir) because the SEARCH_DIR @@ -959,7 +959,8 @@ ld_new_SOURCES = ldgram.y ldlex-wrapper.c lexsup.c ldlang.c mri.c ldctor.c ldmai ldbuildid.c ld_new_DEPENDENCIES = $(EMULATION_OFILES) $(EMUL_EXTRA_OFILES) \ $(BFDLIB) $(LIBCTF) $(LIBIBERTY) $(LIBINTL_DEP) $(JANSSON_LIBS) -ld_new_LDADD = $(EMULATION_OFILES) $(EMUL_EXTRA_OFILES) $(BFDLIB) $(LIBCTF) $(LIBIBERTY) $(LIBINTL) $(ZLIB) $(JANSSON_LIBS) +ld_new_LDADD = $(EMULATION_OFILES) $(EMUL_EXTRA_OFILES) $(BFDLIB) $(LIBCTF) \ + $(LIBIBERTY) $(LIBINTL) $(ZLIB) $(ZSTD_LIBS) $(JANSSON_LIBS) # Dependency tracking for the generated emulation files. EXTRA_ld_new_SOURCES += $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES) |