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Arnaldo Carvalho de Melo 63a4354ae7 perf scripting perl: Ignore some warnings to keep building with perl headers
On gcc 12 we started seeing this:

  In file included from /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/perl.h:2999,
                   from util/scripting-engines/trace-event-perl.c:35:
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/inline.h: In function 'Perl_is_utf8_valid_partial_char_flags':
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/handy.h:125:23: error: cast from function call of type 'STRLEN' {aka 'long unsigned int'} to non-matching type '_Bool' [-Werror=bad-function-cast]
    125 | #define cBOOL(cbool) ((bool) (cbool))
        |                       ^
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/inline.h:2363:12: note: in expansion of macro 'cBOOL'
   2363 |     return cBOOL(is_utf8_char_helper_(s0, e, flags));
        |            ^~~~~
  In file included from /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/perl.h:7242:
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/inline.h: In function 'Perl_cop_file_avn':
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/inline.h:3489:5: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement]
   3489 |     const char *file = CopFILE(cop);
        |     ^~~~~
  In file included from /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/perl.h:7243:
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/sv_inline.h: In function 'Perl_newSV_type':
  /usr/lib/perl5/5.36.0/x86_64-linux-thread-multi/CORE/sv_inline.h:376:5: error: enumeration value 'SVt_LAST' not handled in switch [-Werror=switch-enum]
    376 |     switch (type) {
        |     ^~~~~~

So disable those warnings to keep building with perl devel headers.

Noticed, among other distros, on opensuse tumbleweed:

gcc version 12.1.1 20220629 [revision 7811663964aa7e31c3939b859bbfa2e16919639f] (SUSE Linux)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20 11:09:11 -03:00
arch - Improve the check whether the kernel supports WP mappings so that it 2022-07-17 08:27:30 -07:00
block
certs
crypto
Documentation RISC-V: 2022-07-15 10:31:46 -07:00
drivers - Fix 32b build 2022-07-17 13:08:03 -07:00
fs for-5.19-rc7-tag 2022-07-16 13:48:55 -07:00
include Input updates for v5.19-rc6 2022-07-17 07:52:46 -07:00
init
ipc
kernel - A single data race fix on the perf event cleanup path to avoid endless 2022-07-17 08:34:02 -07:00
lib
LICENSES
mm
net
samples
scripts
security
sound
tools perf scripting perl: Ignore some warnings to keep building with perl headers 2022-07-20 11:09:11 -03:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS spi: Fixes for v5.19 2022-07-15 10:23:43 -07:00
Makefile Linux 5.19-rc7 2022-07-17 13:30:22 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.