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>
Fix below compile error:
CC util/scripting-engines/trace-event-perl.o
In file included from /usr/lib/perl5/5.22.2/i686-linux/CORE/perl.h:5673:0,
from util/scripting-engines/trace-event-perl.c:31:
/usr/lib/perl5/5.22.2/i686-linux/CORE/inline.h: In function 'S__is_utf8_char_slow':
/usr/lib/perl5/5.22.2/i686-linux/CORE/inline.h:270:5: error: nested extern declaration of 'Perl___notused' [-Werror=nested-externs]
dTHX; /* The function called below requires thread context */
^
cc1: all warnings being treated as errors
After digging perl5 repository, I find out that we will meet this
compile error with perl from v5.21.1 to v5.25.4
Signed-off-by: Wang YanQing <udknight@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170212024655.GA15997@udknight
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
