linux-kernel - Re: [RFC PATCH] perf: add SLANG

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Message-ID: <20120905224122.GH8203@ghostprotocols.net>
Date:	Wed, 5 Sep 2012 15:41:22 -0700
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Richard Purdie <richard.purdie@...uxfoundation.org>
Cc:	Liang Li <liang.li@...driver.com>, a.p.zijlstra@...llo.nl,
	paulus@...ba.org, mingo@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] perf: add SLANG_INC for slang.h

Em Wed, Sep 05, 2012 at 10:23:03PM +0100, Richard Purdie escreveu:
> On Wed, 2012-09-05 at 13:54 -0700, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Aug 24, 2012 at 11:10:39AM +0800, Liang Li escreveu:
> > > CFLAGS was previously hard coded to contain "-I/usr/include/slang" to
> > > work with hosts that have "/usr/include/slang/slang.h" as well as hosts
> > > that have "/usr/include/slang.h". This path can cause compile warnings
> > > like:
> > > 
> > > cc1: warning: '/usr/include/slang' doesn't exists.
> > > 
> > > or
> > > 
> > > cc1: warning: include location "/usr/include/slang" is unsafe for
> > > cross-compilation [-Wpoison-system-directories]
> > > 
> > > Then in some cases warnings become errors if WERROR is enabled hence
> > > build errors.
> > > 
> > > To fix this issue, we can use -idirafter to downgrade the priority of the
> > > default hard coded path. We can also make the slang include directory
> > > a variable, to allow the user to specify SLANG_INC and set their own
> > > include location. And add a '=' prefix to indicate better
> > > compatibility with sysroot/cross compile cases.
> > 
> >     CC /home/acme/git/build/perf/builtin-diff.o
> > In file included from util/../ui/keysyms.h:4,
> >                  from util/hist.h:142,
> >                  from builtin-diff.c:11:
> > util/../ui/libslang.h:12:19: error: slang.h: No such file or directory
> > util/../ui/libslang.h:14:5: error: "SLANG_VERSION" is not defined
> > In file included from util/../ui/keysyms.h:4,
> >                  from util/hist.h:142,
> >                  from util/evsel.h:10,
> >                  from util/evlist.h:8,
> >                  from builtin-annotate.c:20:
> > util/../ui/libslang.h:12:19: error: slang.h: No such file or directory
> > util/../ui/libslang.h:14:5: error: "SLANG_VERSION" is not defined
> > builtin-annotate.c: In function ‘hists__find_annotations’:
> > builtin-annotate.c:122: error: ‘SL_KEY_RIGHT’ undeclared (first use in
> > this function)
> > builtin-annotate.c:122: error: (Each undeclared identifier is reported
> > only once
> > builtin-annotate.c:122: error: for each function it appears in.)
> > builtin-annotate.c:134: error: ‘SL_KEY_LEFT’ undeclared (first use in
> > this function)
> > make: *** [/home/acme/git/build/perf/builtin-annotate.o] Error 1
> > make: *** Waiting for unfinished jobs....
> > make: *** [/home/acme/git/build/perf/builtin-diff.o] Error 1
> > make: Leaving directory `/home/git/linux/tools/perf'
> > [acme@...dy linux]$ cat /etc/redhat-release 
> > Red Hat Enterprise Linux Server release 6.3 (Santiago)
> > [acme@...dy linux]$
> 
> Does:
> 
> SLANG_INC ?= -I=/usr/include/slang
> 
> work any better? Its hard to tell from the above error which bit of the

I'll try later

> syntax is failing. Which gcc version is it?

[acme@...dy linux]$ gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap
--enable-shared --enable-threads=posix --enable-checking=release
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic
--with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) 
[acme@...dy linux]$
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