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author | Fangrui Song <maskray@google.com> | 2022-09-26 19:50:13 -0700 |
---|---|---|
committer | Arsen Arsenović <arsen@gcc.gnu.org> | 2023-08-07 22:59:37 +0200 |
commit | 407a2c9abd3dc3ebde0443980bdacbdf83a98374 (patch) | |
tree | f593a1063ea276c7c89d2f5bb3149cf1f8a2f902 /configure | |
parent | a885ec2485bed6549ab9384a455433f3fd547603 (diff) | |
download | gcc-407a2c9abd3dc3ebde0443980bdacbdf83a98374.zip gcc-407a2c9abd3dc3ebde0443980bdacbdf83a98374.tar.gz gcc-407a2c9abd3dc3ebde0443980bdacbdf83a98374.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
...
```
config/ChangeLog:
* zstd.m4: New file.
ChangeLog:
* configure: Regenerate.
* configure.ac: Add --with-zstd.
Diffstat (limited to 'configure')
-rwxr-xr-x | configure | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -800,6 +800,7 @@ ac_user_opts=' enable_option_checking with_build_libsubdir with_system_zlib +with_zstd enable_as_accelerator_for enable_offload_targets enable_offload_defaulted @@ -1589,6 +1590,8 @@ Optional Packages: --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) --with-build-libsubdir=DIR Directory where to find libraries for build system --with-system-zlib use installed libz + --with-zstd Support zstd compressed debug sections + (default=auto) --with-mpc=PATH specify prefix directory for installed MPC package. Equivalent to --with-mpc-include=PATH/include plus --with-mpc-lib=PATH/lib @@ -2962,6 +2965,13 @@ if test x$with_system_readline = xyes ; then noconfigdirs="$noconfigdirs readline" fi + +# Check whether --with-zstd was given. +if test "${with_zstd+set}" = set; then : + withval=$with_zstd; +fi + + # some tools are so dependent upon X11 that if we're not building with X, # it's not even worth trying to configure, much less build, that tool. |