File perl-5.18-nowarn.patch of Package perf

From: "Kirill A. Shutemov" <kir...@shutemov.name>
Reference: https://groups.google.com/forum/#!topic/linux.kernel/Ws4ZajStT9A
Signed-off-by: Tony Jones <tonyj@suse.de>

perl.h from new Perl release doesn't like -Wundef and -Wswitch-default:

/usr/lib/perl5/core_perl/CORE/perl.h:548:5: error: "SILENT_NO_TAINT_SUPPORT" is not defined [-Werror=undef]
 #if SILENT_NO_TAINT_SUPPORT && !defined(NO_TAINT_SUPPORT)
     ^
/usr/lib/perl5/core_perl/CORE/perl.h:556:5: error: "NO_TAINT_SUPPORT" is not defined [-Werror=undef]
 #if NO_TAINT_SUPPORT
     ^
In file included from /usr/lib/perl5/core_perl/CORE/perl.h:3471:0,
                 from util/scripting-engines/trace-event-perl.c:30:
/usr/lib/perl5/core_perl/CORE/sv.h:1455:5: error: "NO_TAINT_SUPPORT" is not defined [-Werror=undef]
 #if NO_TAINT_SUPPORT
     ^
In file included from /usr/lib/perl5/core_perl/CORE/perl.h:3472:0,
                 from util/scripting-engines/trace-event-perl.c:30:
/usr/lib/perl5/core_perl/CORE/regexp.h:436:5: error: "NO_TAINT_SUPPORT" is not defined [-Werror=undef]
 #if NO_TAINT_SUPPORT
     ^
In file included from /usr/lib/perl5/core_perl/CORE/hv.h:592:0,
                 from /usr/lib/perl5/core_perl/CORE/perl.h:3480,
                 from util/scripting-engines/trace-event-perl.c:30:
/usr/lib/perl5/core_perl/CORE/hv_func.h: In function ‘S_perl_hash_siphash_2_4’:
/usr/lib/perl5/core_perl/CORE/hv_func.h:222:3: error: switch missing default case [-Werror=switch-default]
   switch( left )
   ^
/usr/lib/perl5/core_perl/CORE/hv_func.h: In function ‘S_perl_hash_superfast’:
/usr/lib/perl5/core_perl/CORE/hv_func.h:274:5: error: switch missing default case [-Werror=switch-default]
     switch (rem) { \
     ^
/usr/lib/perl5/core_perl/CORE/hv_func.h: In function ‘S_perl_hash_murmur3’:
/usr/lib/perl5/core_perl/CORE/hv_func.h:398:5: error: switch missing default case [-Werror=switch-default]
     switch(bytes_in_carry) { /* how many bytes in carry */
     ^

Let's disable the warnings for code which uses perl.h.

Signed-off-by: Kirill A. Shutemov <kir...@shutemov.name>
---
 tools/perf/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index b0f164b..3230f9e 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -631,10 +631,10 @@
 	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) -Wno-redundant-decls $<
 
 $(OUTPUT)util/scripting-engines/trace-event-perl.o: util/scripting-engines/trace-event-perl.c $(OUTPUT)PERF-CFLAGS
-	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow $<
+	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow -Wno-undef -Wno-switch-default $<
 
 $(OUTPUT)scripts/perl/Perf-Trace-Util/Context.o: scripts/perl/Perf-Trace-Util/Context.c $(OUTPUT)PERF-CFLAGS
-	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs $<
+	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs -Wno-undef -Wno-switch-default $<
 
 $(OUTPUT)util/scripting-engines/trace-event-python.o: util/scripting-engines/trace-event-python.c $(OUTPUT)PERF-CFLAGS
 	$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $(PYTHON_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow $<