Re: Build perf with clang, failure with libperf

From: Sedat Dilek
Date: Thu Apr 07 2022 - 06:28:18 EST

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On Mon, Apr 4, 2022 at 11:53 PM Nathan Chancellor <nathan@xxxxxxxxxx> wrote:
>
> Hi Arnaldo,
>
> On Mon, Apr 04, 2022 at 05:43:11PM -0300, Arnaldo Carvalho de Melo wrote:
> > Hi,
> >
> > Trying to apply Sedat's patch something changed in my system,
> > and that patch wasn't enough, so I had to first apply this one:
> >
> > commit 173b552663419f40bcd3cf9df4f68285cac72727
> > Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> > Date: Mon Apr 4 17:28:48 2022 -0300
> >
> > tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts
> >
> > Just like its done for ldopts and for both in tools/perf/Makefile.config.
> >
> > Using `` to initialize PERL_EMBED_CCOPTS somehow precludes using:
> >
> > $(filter-out SOMETHING_TO_FILTER,$(PERL_EMBED_CCOPTS))
> >
> > And we need to do it to allow for building with versions of clang where
> > some gcc options selected by distros are not available.
> >
> > Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> > Cc: Fangrui Song <maskray@xxxxxxxxxx>
> > Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
> > Cc: Ian Rogers <irogers@xxxxxxxxxx>
> > Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
> > Cc: John Keeping <john@xxxxxxxxxxxx>
> > Cc: Leo Yan <leo.yan@xxxxxxxxxx>
> > Cc: Michael Petlan <mpetlan@xxxxxxxxxx>
> > Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
> > Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
> > Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> > Cc: Sedat Dilek <sedat.dilek@xxxxxxxxx>
> > Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> >
> > diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> > index 1480910c792e2cb3..90774b60d31b2b8e 100644
> > --- a/tools/build/feature/Makefile
> > +++ b/tools/build/feature/Makefile
> > @@ -217,7 +217,7 @@ strip-libs = $(filter-out -l%,$(1))
> > PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
> > PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
> > PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
> > -PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
> > +PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
> > FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
> >
> > $(OUTPUT)test-libperl.bin:
> >
> > ----------------------------------------------------- 8< -------------------
> >
> > After this I go on filtering out some of the gcc options that clang
> > doesn't grok:
> >
> > diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> > index 90774b60d31b2b8e..bbc5e263e02385ed 100644
> > --- a/tools/build/feature/Makefile
> > +++ b/tools/build/feature/Makefile
> > @@ -215,9 +215,12 @@ grep-libs = $(filter -l%,$(1))
> > strip-libs = $(filter-out -l%,$(1))
> >
> > PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
> > +PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
> > PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
> > PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
> > PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
> > +PERL_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
> > +PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
> > FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
> >
> > $(OUTPUT)test-libperl.bin:
> >
> > ----------------------------------------------------- 8< -------------------
> >
> > And then get to the problems at the end of this message, which seem
> > similar to the problem described here:
> >
> > From Nathan Chancellor <>
> > Subject [PATCH] mwifiex: Remove unnecessary braces from HostCmd_SET_SEQ_NO_BSS_INFO
> >
> > https://lkml.org/lkml/2020/9/1/135
> >
> > So perhaps in this case its better to disable that
> > -Werror,-Wcompound-token-split-by-macro when building with clang?
>
> Yes, I think that is probably the best solution. As far as I can tell,
> at least in this file and context, the warning appears harmless, as the
> "create a GNU C statement expression from two different macros" is very
> much intentional, based on the presence of PERL_USE_GCC_BRACE_GROUPS.
> The warning is fixed in upstream Perl by just avoiding creating GNU C
> statement expressions using STMT_START and STMT_END:
>
> https://github.com/Perl/perl5/issues/18780
> https://github.com/Perl/perl5/pull/18984
>
> If I am reading the source code correctly, an alternative to disabling
> the warning would be specifying -DPERL_GCC_BRACE_GROUPS_FORBIDDEN but it
> seems like that might end up impacting more than just this site,
> according to the issue discussion above.
>

Thanks for the pointer Nathan.

As said I hit the problem with Debian's perl v5.34.

Checking perl5 Git reveals:

"skip using gcc brace groups for STMT_START/END"
https://github.com/Perl/perl5/commit/7169efc77525df70484a824bff4ceebd1fafc760

"Partially Revert "skip using gcc brace groups for STMT_START/END""
https://github.com/Perl/perl5/commit/e08ee3cb66f362c4901846a46014cfdfcd60326c

Perl v5.34.x seems not to have these changes:
https://github.com/Perl/perl5/compare/v5.34.0...v5.34.1

Unsure if there exists a real fix for perl5.

- Sedat -

> Cheers,
> Nathan
>
> > ----------------------------------------------------- 8< -------------------
> >
> > ⬢[acme@toolbox perf]$ cat /tmp/build/perf/feature/test-libperl.make.output
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > v ^= (v>>23); \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: note: ')' token is here
> > ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:151:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[1],0xaa6f908d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:151:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[1],0xaa6f908d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:151:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[1],0xaa6f908d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > v ^= (v>>23); \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:151:5: note: ')' token is here
> > ZAPHOD32_SCRAMBLE32(state[1],0xaa6f908d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:152:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[2],0xcdf6b72d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:152:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[2],0xcdf6b72d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:152:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[2],0xcdf6b72d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > v ^= (v>>23); \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:152:5: note: ')' token is here
> > ZAPHOD32_SCRAMBLE32(state[2],0xcdf6b72d);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:156:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 1/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:37: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:156:5: note: '{' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 1/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:48: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:156:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 1/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:124:32: note: expanded from macro 'ZAPHOD32_MIX'
> > v2 = ROTR32(v2, 7) ^ v0; \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:156:5: note: ')' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 1/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:125:3: note: expanded from macro 'ZAPHOD32_MIX'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:157:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 2/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:37: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:157:5: note: '{' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 2/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:48: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:157:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 2/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:124:32: note: expanded from macro 'ZAPHOD32_MIX'
> > v2 = ROTR32(v2, 7) ^ v0; \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:157:5: note: ')' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 2/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:125:3: note: expanded from macro 'ZAPHOD32_MIX'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:158:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 3/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:37: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:158:5: note: '{' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 3/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:48: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:158:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 3/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:124:32: note: expanded from macro 'ZAPHOD32_MIX'
> > v2 = ROTR32(v2, 7) ^ v0; \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:158:5: note: ')' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 3/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:125:3: note: expanded from macro 'ZAPHOD32_MIX'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:159:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 4/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:37: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:159:5: note: '{' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 4/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:116:48: note: expanded from macro 'ZAPHOD32_MIX'
> > #define ZAPHOD32_MIX(v0,v1,v2,text) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:159:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 4/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:124:32: note: expanded from macro 'ZAPHOD32_MIX'
> > v2 = ROTR32(v2, 7) ^ v0; \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:159:5: note: ')' token is here
> > ZAPHOD32_MIX(state[0],state[1],state[2],"ZAPHOD32 SEED-STATE A 4/4");
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:125:3: note: expanded from macro 'ZAPHOD32_MIX'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:162:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[0],0xc95d22a9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:162:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[0],0xc95d22a9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:162:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[0],0xc95d22a9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > v ^= (v>>23); \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:162:5: note: ')' token is here
> > ZAPHOD32_SCRAMBLE32(state[0],0xc95d22a9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:163:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[1],0x8497242b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:163:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[1],0x8497242b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:163:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[1],0x8497242b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > v ^= (v>>23); \
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:163:5: note: ')' token is here
> > ZAPHOD32_SCRAMBLE32(state[1],0x8497242b);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > } STMT_END
> > ^~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
> > # define STMT_END )
> > ^
> > In file included from test-libperl.c:3:
> > In file included from /usr/lib64/perl5/CORE/perl.h:4085:
> > In file included from /usr/lib64/perl5/CORE/hv.h:659:
> > In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
> > In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:164:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
> > ZAPHOD32_SCRAMBLE32(state[2],0x9c5cc4e9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^~~~~~~~~~
> > /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
> > # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
> > ^
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:164:5: note: '{' token is here
> > ZAPHOD32_SCRAMBLE32(state[2],0x9c5cc4e9);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
> > #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START { \
> > ^
> > fatal error: too many errors emitted, stopping now [-ferror-limit=]
> > 20 errors generated.
> > ⬢[acme@toolbox perf]$

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