* [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059]
@ 2022-09-29 7:06 Jakub Jelinek
2022-09-29 8:26 ` Richard Biener
2022-09-29 9:23 ` Tobias Burnus
0 siblings, 2 replies; 3+ messages in thread
From: Jakub Jelinek @ 2022-09-29 7:06 UTC (permalink / raw)
To: Richard Biener, Jason Merrill, Joseph S. Myers; +Cc: gcc-patches, Tobias Burnus
Hi!
My recent change to enable _Float{16,32,64,128,32x,64x,128x} for C++
apparently broke bootstrap on some Debian/Ubuntu setups.
Those multiarch targets put some headers into
/usr/include/x86_64-linux-gnu/bits/ etc. subdirectory instead of
/usr/include/bits/.
This is handled by
/* /usr/include comes dead last. */
{ NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
{ NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
in cppdefault.cc, where the 2 in the last element of the first initializer
means the entry is ignored on non-multiarch and suffixed by the multiarch
dir otherwise, so installed gcc has search path like:
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
(when installed with DESTDIR=/home/jakub/gcc/obj01inst).
Now, when fixincludes is run, it is processing the whole /usr/include dir
and all its subdirectories, so floatn{,-common.h} actually go into
.../include-fixed/x86_64-linux-gnu/bits/floatn{,-common.h}
because that is where they appear in /usr/include too.
In some setups, /usr/include also contains /usr/include/bits -> x86_64-linux-gnu/bits
symlink and after the r13-2896 tweak it works.
In other setups there is no /usr/include/bits symlink and when one
#include <bits/floatn.h>
given the above search path, it doesn't find the fixincluded header,
as
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/bits/floatn.h
doesn't exist and
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/x86_64-linux-gnu/bits/floatn.h
isn't searched and so
/usr/include/x86_64-linux-gnu/bits/floatn.h
wins and we fail because of typedef whatever _Float128; and similar.
The following patch ought to fix this. The first hunk by arranging that
the installed search path actually looks like:
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/x86_64-linux-gnu
/home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
and thus for include-fixed it treats it the same as /usr/include.
The second FIXED_INCLUDE_DIR entry there is:
{ FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
/* A multilib suffix needs adding if different multilibs use
different headers. */
#ifdef SYSROOT_HEADERS_SUFFIX_SPEC
1
#else
0
#endif
},
where SYSROOT_HEADERS_SUFFIX_SPEC is defined only on vxworks or mips*-mti-linux
and arranges for multilib path to be appended there. Neither of those
systems is multiarch.
This isn't enough, because when using the -B option, the driver adds
-isystem .../include-fixed in another place, so the second hunk modifies
that spot the same.
/home/jakub/gcc/obj01/gcc/xgcc -B /home/jakub/gcc/obj01/gcc/
then has search path:
/home/jakub/gcc/obj01/gcc/include
/home/jakub/gcc/obj01/gcc/include-fixed/x86_64-linux-gnu
/home/jakub/gcc/obj01/gcc/include-fixed
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
which again is what I think we want to achieve.
Bootstrapped/regtested on x86_64-linux (Debian on GCCFarm, though with the
/usr/include/bits -> x86_64-linux-gnu/bits symlink). Ok for trunk?
2022-09-29 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/107059
* cppdefault.cc (cpp_include_defaults): If SYSROOT_HEADERS_SUFFIX_SPEC
isn't defined, add FIXED_INCLUDE_DIR entry with multilib flag 2
before FIXED_INCLUDE_DIR entry with multilib flag 0.
* gcc.cc (do_spec_1): If multiarch_dir, add
include-fixed/multiarch_dir paths before include-fixed paths.
--- gcc/cppdefault.cc.jj 2022-01-18 11:58:59.411984500 +0100
+++ gcc/cppdefault.cc 2022-09-28 12:11:47.923603783 +0200
@@ -74,6 +74,9 @@ const struct default_include cpp_include
#endif
#ifdef FIXED_INCLUDE_DIR
/* This is the dir for fixincludes. */
+#ifndef SYSROOT_HEADERS_SUFFIX_SPEC
+ { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0, 2 },
+#endif
{ FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
/* A multilib suffix needs adding if different multilibs use
different headers. */
--- gcc/gcc.cc 2022-09-23 09:02:56.809314447 +0200
+++ gcc/gcc.cc 2022-09-28 21:02:29.751933657 +0200
@@ -6400,6 +6400,18 @@ do_spec_1 (const char *spec, int inswitc
if (*sysroot_hdrs_suffix_spec)
info.append = concat (info.append, dir_separator_str,
multilib_dir, NULL);
+ else if (multiarch_dir)
+ {
+ /* For multiarch, search include-fixed/<multiarch-dir>
+ before include-fixed. */
+ info.append = concat (info.append, dir_separator_str,
+ multiarch_dir, NULL);
+ info.append_len = strlen (info.append);
+ for_each_path (&include_prefixes, false, info.append_len,
+ spec_path, &info);
+
+ info.append = "include-fixed";
+ }
info.append_len = strlen (info.append);
for_each_path (&include_prefixes, false, info.append_len,
spec_path, &info);
Jakub
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059]
2022-09-29 7:06 [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059] Jakub Jelinek
@ 2022-09-29 8:26 ` Richard Biener
2022-09-29 9:23 ` Tobias Burnus
1 sibling, 0 replies; 3+ messages in thread
From: Richard Biener @ 2022-09-29 8:26 UTC (permalink / raw)
To: Jakub Jelinek; +Cc: Jason Merrill, Joseph S. Myers, gcc-patches, Tobias Burnus
On Thu, 29 Sep 2022, Jakub Jelinek wrote:
> Hi!
>
> My recent change to enable _Float{16,32,64,128,32x,64x,128x} for C++
> apparently broke bootstrap on some Debian/Ubuntu setups.
> Those multiarch targets put some headers into
> /usr/include/x86_64-linux-gnu/bits/ etc. subdirectory instead of
> /usr/include/bits/.
> This is handled by
> /* /usr/include comes dead last. */
> { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
> { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
> in cppdefault.cc, where the 2 in the last element of the first initializer
> means the entry is ignored on non-multiarch and suffixed by the multiarch
> dir otherwise, so installed gcc has search path like:
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed
> /usr/local/include
> /usr/include/x86_64-linux-gnu
> /usr/include
> (when installed with DESTDIR=/home/jakub/gcc/obj01inst).
> Now, when fixincludes is run, it is processing the whole /usr/include dir
> and all its subdirectories, so floatn{,-common.h} actually go into
> .../include-fixed/x86_64-linux-gnu/bits/floatn{,-common.h}
> because that is where they appear in /usr/include too.
> In some setups, /usr/include also contains /usr/include/bits -> x86_64-linux-gnu/bits
> symlink and after the r13-2896 tweak it works.
> In other setups there is no /usr/include/bits symlink and when one
> #include <bits/floatn.h>
> given the above search path, it doesn't find the fixincluded header,
> as
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/bits/floatn.h
> doesn't exist and
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/x86_64-linux-gnu/bits/floatn.h
> isn't searched and so
> /usr/include/x86_64-linux-gnu/bits/floatn.h
> wins and we fail because of typedef whatever _Float128; and similar.
> The following patch ought to fix this. The first hunk by arranging that
> the installed search path actually looks like:
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed/x86_64-linux-gnu
> /home/jakub/gcc/obj01inst/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.0/include-fixed
> /usr/local/include
> /usr/include/x86_64-linux-gnu
> /usr/include
> and thus for include-fixed it treats it the same as /usr/include.
> The second FIXED_INCLUDE_DIR entry there is:
> { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
> /* A multilib suffix needs adding if different multilibs use
> different headers. */
> #ifdef SYSROOT_HEADERS_SUFFIX_SPEC
> 1
> #else
> 0
> #endif
> },
> where SYSROOT_HEADERS_SUFFIX_SPEC is defined only on vxworks or mips*-mti-linux
> and arranges for multilib path to be appended there. Neither of those
> systems is multiarch.
> This isn't enough, because when using the -B option, the driver adds
> -isystem .../include-fixed in another place, so the second hunk modifies
> that spot the same.
> /home/jakub/gcc/obj01/gcc/xgcc -B /home/jakub/gcc/obj01/gcc/
> then has search path:
> /home/jakub/gcc/obj01/gcc/include
> /home/jakub/gcc/obj01/gcc/include-fixed/x86_64-linux-gnu
> /home/jakub/gcc/obj01/gcc/include-fixed
> /usr/local/include
> /usr/include/x86_64-linux-gnu
> /usr/include
> which again is what I think we want to achieve.
>
> Bootstrapped/regtested on x86_64-linux (Debian on GCCFarm, though with the
> /usr/include/bits -> x86_64-linux-gnu/bits symlink). Ok for trunk?
OK.
Thanks,
Richard.
> 2022-09-29 Jakub Jelinek <jakub@redhat.com>
>
> PR bootstrap/107059
> * cppdefault.cc (cpp_include_defaults): If SYSROOT_HEADERS_SUFFIX_SPEC
> isn't defined, add FIXED_INCLUDE_DIR entry with multilib flag 2
> before FIXED_INCLUDE_DIR entry with multilib flag 0.
> * gcc.cc (do_spec_1): If multiarch_dir, add
> include-fixed/multiarch_dir paths before include-fixed paths.
>
> --- gcc/cppdefault.cc.jj 2022-01-18 11:58:59.411984500 +0100
> +++ gcc/cppdefault.cc 2022-09-28 12:11:47.923603783 +0200
> @@ -74,6 +74,9 @@ const struct default_include cpp_include
> #endif
> #ifdef FIXED_INCLUDE_DIR
> /* This is the dir for fixincludes. */
> +#ifndef SYSROOT_HEADERS_SUFFIX_SPEC
> + { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0, 2 },
> +#endif
> { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
> /* A multilib suffix needs adding if different multilibs use
> different headers. */
> --- gcc/gcc.cc 2022-09-23 09:02:56.809314447 +0200
> +++ gcc/gcc.cc 2022-09-28 21:02:29.751933657 +0200
> @@ -6400,6 +6400,18 @@ do_spec_1 (const char *spec, int inswitc
> if (*sysroot_hdrs_suffix_spec)
> info.append = concat (info.append, dir_separator_str,
> multilib_dir, NULL);
> + else if (multiarch_dir)
> + {
> + /* For multiarch, search include-fixed/<multiarch-dir>
> + before include-fixed. */
> + info.append = concat (info.append, dir_separator_str,
> + multiarch_dir, NULL);
> + info.append_len = strlen (info.append);
> + for_each_path (&include_prefixes, false, info.append_len,
> + spec_path, &info);
> +
> + info.append = "include-fixed";
> + }
> info.append_len = strlen (info.append);
> for_each_path (&include_prefixes, false, info.append_len,
> spec_path, &info);
>
> Jakub
>
>
--
Richard Biener <rguenther@suse.de>
SUSE Software Solutions Germany GmbH, Frankenstrasse 146, 90461 Nuernberg,
Germany; GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman;
HRB 36809 (AG Nuernberg)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059]
2022-09-29 7:06 [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059] Jakub Jelinek
2022-09-29 8:26 ` Richard Biener
@ 2022-09-29 9:23 ` Tobias Burnus
1 sibling, 0 replies; 3+ messages in thread
From: Tobias Burnus @ 2022-09-29 9:23 UTC (permalink / raw)
To: Jakub Jelinek, Richard Biener, Jason Merrill, Joseph S. Myers; +Cc: gcc-patches
[-- Attachment #1: Type: text/plain, Size: 3123 bytes --]
On 29.09.22 09:06, Jakub Jelinek wrote:
My recent change to enable _Float{16,32,64,128,32x,64x,128x} for C++
apparently broke bootstrap on some Debian/Ubuntu setups.
Those multiarch targets put some headers into
/usr/include/x86_64-linux-gnu/bits/ etc. subdirectory instead of
/usr/include/bits/.
...
Bootstrapped/regtested on x86_64-linux (Debian on GCCFarm, though with the
/usr/include/bits -> x86_64-linux-gnu/bits symlink). Ok for trunk?
I have now bootstrapped on ppc64le with Ubuntu 18.04.3 LTS (bionic) with glibc 2.27-3ubuntu1
This glibc is too old for the '# if __LDBL_MANT_DIG__ == 113"' issue reported by
Joseph as that line was added one version later in glibc 2.28.
But it did have the bootstrap issue (only affecting the -B... / build, the installed
one was okay - for reasons why, see PR).
Thus, my boostrap only tested this patch - and not the __LDBL_MANT_DIG__ part.
Result: Bootstrapping passed and I get for
cd $BUILD
echo '#include <complex.h>' > foo.c
gcc/xgcc -B`pwd`/gcc -v -E -o foo.i foo.c
grep floatn.h foo.i
...
/tmp/gcc-build/gcc/cc1 ... \
-iprefix /tmp/tburnus-gcc-test/gcc/../lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/ \
-isystem /tmp/tburnus-gcc-test/gcc/include \
-isystem /tmp/tburnus-gcc-test/gcc/include-fixed/powerpc64le-linux-gnu \
-isystem /tmp/tburnus-gcc-test/gcc/include-fixed
...
#include "..." search starts here:
#include <...> search starts here:
/tmp/gcc-build/gcc/include
/tmp/gcc-build/gcc/include-fixed/powerpc64le-linux-gnu
/tmp/gcc-build/gcc/include-fixed
/usr/local/include
/usr/include/powerpc64le-linux-gnu
/usr/include
End of search list.
...
# 1 "/tmp/gcc-build/gcc/include-fixed/powerpc64le-linux-gnu/bits/floatn.h" 1 3 4
* * *
And with the installed version:
#include "..." search starts here:
#include <...> search starts here:
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include
/usr/local/include
/tmp/gcc-inst/include
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed/powerpc64le-linux-gnu
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed
/usr/include/powerpc64le-linux-gnu
/usr/include
End of search list.
...
# 1 "/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed/powerpc64le-linux-gnu/bits/floatn.h" 1 3 4
...
Thanks for the fix!
Tobias
2022-09-29 Jakub Jelinek <jakub@redhat.com><mailto:jakub@redhat.com>
PR bootstrap/107059
* cppdefault.cc (cpp_include_defaults): If SYSROOT_HEADERS_SUFFIX_SPEC
isn't defined, add FIXED_INCLUDE_DIR entry with multilib flag 2
before FIXED_INCLUDE_DIR entry with multilib flag 0.
* gcc.cc (do_spec_1): If multiarch_dir, add
include-fixed/multiarch_dir paths before include-fixed paths.
-----------------
Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-09-29 9:23 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-29 7:06 [PATCH] driver, cppdefault: Unbreak bootstrap on Debian/Ubuntu [PR107059] Jakub Jelinek
2022-09-29 8:26 ` Richard Biener
2022-09-29 9:23 ` Tobias Burnus
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).