Use -pthread only if we are going to use pthread functionality.
PR bootstrap/106156
lto-plugin/ChangeLog:
* Makefile.am: Use ac_lto_plugin_extra_ldflags for AM_LDFLAGS.
* configure.ac: Use AC_SUBST(ac_lto_plugin_extra_ldflags).
* Makefile.in: Regenerate.
* configure: Regenerate.
For now, support locking only for linux targets that are different from
riscv* where the target depends on libatomic (and fails during
bootstrap).
PR lto/106170
lto-plugin/ChangeLog:
* configure.ac: Configure HAVE_PTHREAD_LOCKING.
* lto-plugin.c (LOCK_SECTION): New.
(UNLOCK_SECTION): New.
(claim_file_handler): Use the newly added macros.
(onload): Likewise.
* config.h.in: Regenerate.
* configure: Regenerate.
Move -pthread from configure.ac to Makefile.in so that it is passed to AM_LDFLAGS.
PR lto/106118
lto-plugin/ChangeLog:
* configure.ac: Move -pthread from here...
* Makefile.am: ...to here.
* configure: Regenerate.
* Makefile.in: Likewise.
That supports skipping of an object file (LDPS_NO_SYMS).
lto-plugin/ChangeLog:
* lto-plugin.c (struct plugin_file_info): Add skip_file flag.
(write_resolution): Write resolution only if get_symbols != LDPS_NO_SYMS.
(all_symbols_read_handler): Ignore file if skip_file is true.
(onload): Handle LDPT_GET_SYMBOLS_V3.
As reported, libtool -export-symbols-regex doesn't work on Solaris
when using GNU ld instead of Sun ld, libtool just always assumes Sun ld.
As I'm unsure what is the maintainance status of libtool right now,
this patch solves it on the lto-plugin side instead, tests at configure time
similar way how libssp and other target libraries test for symbol versioning
(except omitting the symbol version because we just want one GLOBAL symbol
and rest of them LOCAL), and will use the current way of
-export-symbols-regex onload as fallback when this doesn't work.
2022-03-22 Jakub Jelinek <jakub@redhat.com>
PR lto/102426
lto-plugin/
* configure.ac (LTO_PLUGIN_USE_SYMVER, LTO_PLUGIN_USE_SYMVER_GNU,
LTO_PLUGIN_USE_SYMVER_SUN): New test for symbol versioning support.
* Makefile.am (version_arg, version_dep): Set conditionally based
on LTO_PLUGIN_USE_SYMVER*.
(liblto_plugin_la_LDFLAGS): Use $(version_arg) instead of
-export-symbols-regex onload.
(liblto_plugin_la_DEPENDENCIES): Depend on $(version_dep).
* lto-plugin.map: New file.
* configure: Regenerated.
* Makefile.in: Regenerated.
lto-plugin/ChangeLog:
* lto-plugin.c (all_symbols_read_handler): With -save-temps, use
link_output_name for -foffload-objects's file name, if available.
lto-plugin/ChangeLog:
* lto-plugin.c (process_offload_section): Use a linker as many
comments are connected to gold linker.
(process_option): Likewise.
The transposition nolto -> notlo is confusing and it makes the long
name even harder to read than it already is - I kept reading it as
"not lo" until I realized it was a simple typo.
Fixes: 5269b24605 (Silence warning in LTO mode on VxWorks)
lto-plugin/
* lto-plugin.c: Fix -linker-output-auto-notlo-rel ->
-linker-output-auto-nolto-rel typo.
(process_option): Adjust accordingly, accepting both old and
new spelling.
gcc/
* config/vxworks.h (LTO_PLUGIN_SPEC): Adapt to corrected
spelling of -linker-output-auto-nolto-rel.
So right now liblto_plugin.so exports many libiberty symbols and
simple_object file symbols but really it just needs to export onload.
This fixes the problem by using "-export-symbols-regex onload" on
the libtool link line.
lto-plugin/ChangeLog:
PR lto/49664
* Makefile.am: Export only onload.
* Makefile.in: Regenerate.
This adds a -ltrans-objects option to lto-plugin that by-passes
lto-wrapper invocation and instead feeds LD the final LTRANS objects
directly from the response file given as argument to the option.
This allows LD issues involving the linker-plugin path to be
debugged in an easier way with just the IR objects (their symtab)
and the LTRANS objects as testcase.
I've tested the path re-building stage2 build/genmatch from an
LTO bootstrap and got a bit-identical executable by adding
-plugin-opt=-ltrans-objects=y to the original collect2 invocation,
seeding y with the final objects as printed by building genmatch
with -save-temps -v.
2021-06-22 Richard Biener <rguenther@suse.de>
lto-plugin/
* lto-plugin.c (ltrans_objects): New global.
(all_symbols_read_handler): If -ltrans-objects was specified,
add the output files from the specified file directly.
(process_option): Handle -ltrans-objects.
This fixes:
lto-plugin.c:642:7: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int]
lto-plugin/ChangeLog:
* lto-plugin.c (exec_lto_wrapper): Make a temp variable.
This is an analogous option to --bootstrap-asan to configure. It allows
bootstrapping GCC using HWASAN.
For the same reasons as for ASAN we have to avoid using the HWASAN
sanitizer when compiling libiberty and the lto-plugin.
Also add a function to query whether -fsanitize=hwaddress has been
passed.
ChangeLog:
* configure: Regenerate.
* configure.ac: Add --bootstrap-hwasan option.
config/ChangeLog:
* bootstrap-hwasan.mk: New file.
gcc/ChangeLog:
* doc/install.texi: Document new option.
libiberty/ChangeLog:
* configure: Regenerate.
* configure.ac: Avoid using sanitizer.
lto-plugin/ChangeLog:
* Makefile.am: Avoid using sanitizer.
* Makefile.in: Regenerate.
GCC on Linux already uses liblto_plugin.so directly without
the libtool version suffix, adjust windows GCC to do the same.
gcc/ChangeLog:
* config.host: Adjust plugin name for Windows.
lto-plugin/ChangeLog:
* Makefile.am: drop versioning from libtool completely.
* Makefile.in: regenerate.
2020-09-09 Nick Clifton <nickc@redhat.com>
* lto-plugin.c (struct plugin_symtab): Add last_sym field.
(parse_symtab_extension): Only read as many entries as are
available in the buffer. Store the data read into the symbol
table indexed from last_sym. Increment last_sym.
With --enable-cet, require CET support only for the final GCC build.
Don't enable CET without CET support for non-bootstrap build, in stage1
nor for build support.
config/
PR bootstrap/96202
* cet.m4 (GCC_CET_HOST_FLAGS): Don't enable CET without CET
support in stage1 nor for build support.
gcc/
PR bootstrap/96202
* configure: Regenerated.
libbacktrace/
PR bootstrap/96202
* configure: Regenerated.
libcc1/
PR bootstrap/96202
* configure: Regenerated.
libcpp/
PR bootstrap/96202
* configure: Regenerated.
libdecnumber/
PR bootstrap/96202
* configure: Regenerated.
libiberty/
PR bootstrap/96202
* configure: Regenerated.
lto-plugin/
PR bootstrap/96202
* configure: Regenerated.
GCC Administrator
Martin Liska
Pekka Seppänen
Jakub Jelinek
Tobias Burnus
Rasmus Villemoes
Andrew Pinski
Richard Biener
H.J. Lu
Samuel Thibault
John David Anglin
Matthew Malcomson
Jonathan Yong
Nick Clifton