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* [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS
@ 2020-04-24 1:10 hjl.tools at gmail dot com
2020-04-24 19:32 ` [Bug bootstrap/94739] " hjl.tools at gmail dot com
` (11 more replies)
0 siblings, 12 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-24 1:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
Bug ID: 94739
Summary: GCC won't build on CET enabled Linux OS
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
[hjl@gnu-tgl-1 build-x86_64-linux]$ readelf -n /bin/ld 2>&1|more
Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x00000030 NT_GNU_PROPERTY_TYPE_0
Properties: x86 feature: IBT, SHSTK
x86 ISA used: CMOV, SSE, SSE2
x86 feature used: x86, XMM
and I got
build-x86_64-linux/./gcc/liblto_plugin.so: indirect branch tracking isn't
enabled: Invalid argument
collect2: error: ld returned 1 exit status
make[7]: *** [Makefile:994: libgcc_s.so] Error 1
Since ld is CET enabled, dlopen failed on liblto_plugin.so since it isn't CET
enabled. On CET enabled Linux OS, we need to always enable CET on
liblto_plugin.so.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
@ 2020-04-24 19:32 ` hjl.tools at gmail dot com
2020-04-25 17:09 ` cvs-commit at gcc dot gnu.org
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-24 19:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2020-04-24
Keywords| |patch
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
URL| |https://gcc.gnu.org/piperma
| |il/gcc-patches/2020-April/5
| |44535.html
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/pipermail/gcc-patches/2020-April/544535.html
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
2020-04-24 19:32 ` [Bug bootstrap/94739] " hjl.tools at gmail dot com
@ 2020-04-25 17:09 ` cvs-commit at gcc dot gnu.org
2020-04-25 17:13 ` hjl.tools at gmail dot com
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-04-25 17:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:8fc8bf801e46d0d478c50bddecf5d8edf9511849
commit r10-7961-g8fc8bf801e46d0d478c50bddecf5d8edf9511849
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Apr 25 10:06:59 2020 -0700
Enable Intel CET in liblto_plugin.so on Intel CET enabled host
Since ld is Intel CET enabled on Intel CET enabled host, dlopen fails on
liblto_plugin.so if it isn't Intel CET enabled. Add GCC_CET_HOST_FLAGS
to cet.m4, use it in libiberty and lto-plugin to always enable Intel
CET in liblto_plugin.so on Intel CET enabled host.
On Linux/x86 host, enable Intel CET by default if assembler and compiler
support Intel CET so that the generated liblto_plugin.so can be used on
both CET and non-CET machines. It is an error to disable Intel CET in
liblto_plugin.so on Intel CET enabled host.
config/
PR bootstrap/94739
* cet.m4 (GCC_CET_HOST_FLAGS): New.
libiberty/
PR bootstrap/94739
* Makefile.in (COMPILE.c): Add @CET_HOST_FLAGS@.
(configure_deps): Add $(srcdir)/../config/cet.m4 and
$(srcdir)/../config/enable.m4.
* aclocal.m4: Include ../config/cet.m4 and ../config/enable.m4.
* configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
AC_SUBST(CET_HOST_FLAGS).
* configure: Regenerated.
lto-plugin/
PR bootstrap/94739
* Makefile.am (AM_CFLAGS): Add $(CET_HOST_FLAGS).
* configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
AC_SUBST(CET_HOST_FLAGS).
* Makefile.in: Regenerated.
* aclocal.m4: Likewise.
* configure: Likewise.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
2020-04-24 19:32 ` [Bug bootstrap/94739] " hjl.tools at gmail dot com
2020-04-25 17:09 ` cvs-commit at gcc dot gnu.org
@ 2020-04-25 17:13 ` hjl.tools at gmail dot com
2020-04-27 8:47 ` manfred99 at gmx dot ch
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-25 17:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |10.0
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 10.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (2 preceding siblings ...)
2020-04-25 17:13 ` hjl.tools at gmail dot com
@ 2020-04-27 8:47 ` manfred99 at gmx dot ch
2020-04-27 13:00 ` hjl.tools at gmail dot com
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: manfred99 at gmx dot ch @ 2020-04-27 8:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
Manfred Schwarb <manfred99 at gmx dot ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manfred99 at gmx dot ch
--- Comment #4 from Manfred Schwarb <manfred99 at gmx dot ch> ---
This broke my i686 build (only, x86_64 build with same settings is OK), I get
configure: error: Intel CET must be enabled on Intel CET enabled host
make[2]: *** [configure-stage2-lto-plugin] Error 1
make[2]: *** Waiting for unfinished jobs....
configure: error: Intel CET must be enabled on Intel CET enabled host
make[2]: *** [configure-stage2-libiberty] Error 1
both in prev-libiberty/config.log and prev-lto-plugin/config.log there is
configure:5283: checking for CET support
configure:5312: gcc -march=i686 -m32 -Wa,--32 -c -g -fcf-protection conftest.c
>&5
gcc: error: unrecognized command line option '-fcf-protection'
configure:5312: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_UNISTD_H 1
| #define __EXTENSIONS__ 1
| #define _ALL_SOURCE 1
| #define _GNU_SOURCE 1
| #define _POSIX_PTHREAD_SEMANTICS 1
| #define _TANDEM_SOURCE 1
| #define _FILE_OFFSET_BITS 64
| /* end confdefs.h. */
|
| int
| main ()
| {
|
| #if !defined(__SSE2__)
| #error target does not support multi-byte NOPs
| #else
| asm ("setssbsy");
| #endif
|
| ;
| return 0;
| }
My configure command is
#> ../gcc-trunk-source/gcc/configure --enable-languages=c,c++,fortran
--enable-checking=yes,extra --disable-libstdcxx-pch --enable-libgomp
--enable-lto --enable-gold --with-plugin-ld=gold
--prefix=/usr/local/gcc-trunk-32bit i686-linux
and then I issue the make command with
#> make -j4 BOOT_CFLAGS="-g -O2" bootstrap2-lean
As mentioned above, the very same commands (without the "i686-linux" configure
argument) work fine to build x86_64 binaries.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (3 preceding siblings ...)
2020-04-27 8:47 ` manfred99 at gmx dot ch
@ 2020-04-27 13:00 ` hjl.tools at gmail dot com
2020-04-27 13:29 ` hjl.tools at gmail dot com
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-27 13:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Manfred Schwarb from comment #4)
> This broke my i686 build (only, x86_64 build with same settings is OK), I get
>
> configure: error: Intel CET must be enabled on Intel CET enabled host
> make[2]: *** [configure-stage2-lto-plugin] Error 1
> make[2]: *** Waiting for unfinished jobs....
> configure: error: Intel CET must be enabled on Intel CET enabled host
> make[2]: *** [configure-stage2-libiberty] Error 1
Please show me libiberty/config.log which leads to
configure: error: Intel CET must be enabled on Intel CET enabled host
>
> both in prev-libiberty/config.log and prev-lto-plugin/config.log there is
>
> configure:5283: checking for CET support
> configure:5312: gcc -march=i686 -m32 -Wa,--32 -c -g -fcf-protection
> conftest.c >&5
> gcc: error: unrecognized command line option '-fcf-protection'
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (4 preceding siblings ...)
2020-04-27 13:00 ` hjl.tools at gmail dot com
@ 2020-04-27 13:29 ` hjl.tools at gmail dot com
2020-04-27 13:53 ` tschwinge at gcc dot gnu.org
` (5 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-27 13:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 48383
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48383&action=edit
A patch.
Please try this.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (5 preceding siblings ...)
2020-04-27 13:29 ` hjl.tools at gmail dot com
@ 2020-04-27 13:53 ` tschwinge at gcc dot gnu.org
2020-04-27 14:09 ` manfred99 at gmx dot ch
` (4 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: tschwinge at gcc dot gnu.org @ 2020-04-27 13:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
CC| |tschwinge at gcc dot gnu.org
Resolution|FIXED |---
Assignee|unassigned at gcc dot gnu.org |hjl at gcc dot gnu.org
--- Comment #7 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to CVS Commits from comment #2)
> commit r10-7961-g8fc8bf801e46d0d478c50bddecf5d8edf9511849
> Author: H.J. Lu <hjl.tools@gmail.com>
> Date: Sat Apr 25 10:06:59 2020 -0700
>
> Enable Intel CET in liblto_plugin.so on Intel CET enabled host
In a GCC configuration on x86_64-pc-linux-gnu (so, x86_64 build/host) but with:
--enable-linker-plugin-flags='CC=gcc\ -m32' \
--enable-linker-plugin-configure-flags=--host=i686-pc-linux-gnu
... so that linker plugins are compiled for use with a x86 32-bit linker
executable, we get:
checking for a BSD-compatible install... /usr/bin/install -c
checking for CET support... configure: error: in
`[...]/build-gcc-offload-nvptx-none/libiberty-linker-plugin':
configure: error: cannot run test program while cross compiling
See `config.log' for more details
Makefile:8440: recipe for target 'configure-libiberty-linker-plugin' failed
I can't speak for Manfred's (different) problem report, but:
(In reply to H.J. Lu from comment #6)
> Created attachment 48383 [details]
> A patch.
>
> Please try this.
This does seem to resolve the particular problem I'm seeing.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (6 preceding siblings ...)
2020-04-27 13:53 ` tschwinge at gcc dot gnu.org
@ 2020-04-27 14:09 ` manfred99 at gmx dot ch
2020-04-27 15:22 ` manfred99 at gmx dot ch
` (3 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: manfred99 at gmx dot ch @ 2020-04-27 14:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #8 from Manfred Schwarb <manfred99 at gmx dot ch> ---
Created attachment 48384
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48384&action=edit
libiberty/config.log
The full logfile of libiberty. I will apply the patch now and will report back.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (7 preceding siblings ...)
2020-04-27 14:09 ` manfred99 at gmx dot ch
@ 2020-04-27 15:22 ` manfred99 at gmx dot ch
2020-04-27 17:07 ` hjl.tools at gmail dot com
` (2 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: manfred99 at gmx dot ch @ 2020-04-27 15:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #9 from Manfred Schwarb <manfred99 at gmx dot ch> ---
Patch seems to work so far. Do you need any logfiles?
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (8 preceding siblings ...)
2020-04-27 15:22 ` manfred99 at gmx dot ch
@ 2020-04-27 17:07 ` hjl.tools at gmail dot com
2020-04-28 12:59 ` cvs-commit at gcc dot gnu.org
2020-04-28 13:02 ` hjl.tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-27 17:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Manfred Schwarb from comment #9)
> Patch seems to work so far. Do you need any logfiles?
No need for it.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (9 preceding siblings ...)
2020-04-27 17:07 ` hjl.tools at gmail dot com
@ 2020-04-28 12:59 ` cvs-commit at gcc dot gnu.org
2020-04-28 13:02 ` hjl.tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-04-28 12:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:eedc73a224df61694fe4802ddec8eb9ad1822f32
commit r10-8010-geedc73a224df61694fe4802ddec8eb9ad1822f32
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 28 05:42:34 2020 -0700
Check whether -fcf-protection=none -Wl,-z,ibt,-z,shstk work first
GCC_CET_HOST_FLAGS uses -Wl,-z,ibt,-z,shstk to check if Linux/x86 host
has Intel CET enabled by introducing an Intel CET violation on purpose.
To avoid false positive, check whether -Wl,-z,ibt,-z,shstk works first.
-fcf-protection=none is added to avoid false negative when -fcf-protection
is enabled by default.
config/
PR bootstrap/94739
* cet.m4 (GCC_CET_HOST_FLAGS): Add -fcf-protection=none to
-Wl,-z,ibt,-z,shstk. Check whether -fcf-protection=none
-Wl,-z,ibt,-z,shstk works first.
libiberty/
PR bootstrap/94739
* configure: Regenerated.
lto-plugin/
PR bootstrap/94739
* configure: Regenerated.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug bootstrap/94739] GCC won't build on CET enabled Linux OS
2020-04-24 1:10 [Bug bootstrap/94739] New: GCC won't build on CET enabled Linux OS hjl.tools at gmail dot com
` (10 preceding siblings ...)
2020-04-28 12:59 ` cvs-commit at gcc dot gnu.org
@ 2020-04-28 13:02 ` hjl.tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: hjl.tools at gmail dot com @ 2020-04-28 13:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|REOPENED |RESOLVED
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2020-04-28 13:02 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
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2020-04-25 17:09 ` cvs-commit at gcc dot gnu.org
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