[Buildroot] [PATCH v2] valgrind: fix musl compile

[Peter Seiderer <ps.report@gmx.net>]

Hello Arnout,

On Tue, 9 Feb 2016 22:43:46 +0100, Arnout Vandecappelle <arnout@mind.be> wrote:

> On 09-02-16 21:53, Peter Seiderer wrote:
> > Add musl libc detection (based on suggestions by Romain Naour and
> > Arnout Vandecappelle) and add some tweaks for musl support (based
> > on OpenWRT patch [1]).
> > 
> > Fixes ([2]):
> >   checking the glibc version... unsupported version
> >   configure: error: Valgrind requires glibc version 2.2 or later
> > 
> > Patch suggested upstream (see [3]).
> > 
> > [1] https://dev.openwrt.org/browser/trunk/package/devel/valgrind/patches/200-musl_fix.patch?rev=46302
> > [2] http://autobuild.buildroot.org/results/7b0/7b048ba58918f0a08498c61327fcf35a85a84837
> > [3] https://bugs.kde.org/show_bug.cgi?id=359202
> > 
> > Signed-off-by: Peter Seiderer <ps.report@gmx.net>
> > ---
> > Changes v1 -> v2:
> >   - add proper musl libc detection (suggested by Romain Naour and
> >     Arnout Vandecappelle)
> [snip]
> > ++     musl)
> > ++	AC_MSG_RESULT(Musl)
> > ++	AC_DEFINE([MUSL_LIBC], 1, [Define to 1 if you're using Musl libc])
> > ++	# no DEFAULT_SUPP file yet for musl libc.
> > ++	;;
> > +      2.0|2.1|*)
> > + 	AC_MSG_RESULT([unsupported version ${GLIBC_VERSION}])
> > + 	AC_MSG_ERROR([Valgrind requires glibc version 2.2 or later,])
> > +-	AC_MSG_ERROR([Darwin libc, Bionic libc or Solaris libc])
> > ++	AC_MSG_ERROR([musl libc, Darwin libc, Bionic libc or Solaris libc])
> 
>  Actuallly, uClibc was already supported as well :-)

O.k, will add uclibc as well...

> 
> > + 	;;
> > + esac
> > + 
> > +diff --git a/coregrind/vg_preloaded.c b/coregrind/vg_preloaded.c
> > +index 2ea7a7a..e49c832 100644
> > +--- a/coregrind/vg_preloaded.c
> > ++++ b/coregrind/vg_preloaded.c
> > +@@ -56,7 +56,7 @@
> > + void VG_NOTIFY_ON_LOAD(freeres)( void );
> > + void VG_NOTIFY_ON_LOAD(freeres)( void )
> > + {
> > +-#  if !defined(__UCLIBC__) \
> > ++#  if !defined(__UCLIBC__) && defined(__GLIBC__) \
> 
>  Adding defined(__GLIBC__) effectively excludes android (bionic), doesn't it?
> 
> > +       && !defined(VGPV_arm_linux_android) \
> > +       && !defined(VGPV_x86_linux_android) \
> > +       && !defined(VGPV_mips32_linux_android) \
> > +diff --git a/include/pub_tool_redir.h b/include/pub_tool_redir.h
> > +index bac00d7..b8cd97e 100644
> > +--- a/include/pub_tool_redir.h
> > ++++ b/include/pub_tool_redir.h
> > +@@ -242,8 +242,11 @@
> > + /* --- Soname of the standard C library. --- */
> > + 
> > + #if defined(VGO_linux) || defined(VGO_solaris)
> > ++# if defined(__GLIBC__) || defined(__UCLIBC__)
> 
>  AFAICS, on solaris neither of these is defined, so that's probably not good
> either. I guess it's better to revert the condition and check on musl instead.

O.k, will do...

> 
> > + #  define  VG_Z_LIBC_SONAME  libcZdsoZa              // libc.so*
> > +-
> > ++#else
> > ++#  define  VG_Z_LIBC_SONAME  libcZdZa              // libc.*
> > ++#endif
> > + #elif defined(VGO_darwin) && (DARWIN_VERS <= DARWIN_10_6)
> > + #  define  VG_Z_LIBC_SONAME  libSystemZdZaZddylib    // libSystem.*.dylib
> > + 
> > +@@ -274,7 +277,11 @@
> > + /* --- Soname of the pthreads library. --- */
> > + 
> > + #if defined(VGO_linux)
> > ++# if defined(__GLIBC__) || defined(__UCLIBC__)
> 
>  Same here.
> 

O.k, will do...
> 
> 
>  Regards,
>  Arnout
> 
> 
> > + #  define  VG_Z_LIBPTHREAD_SONAME  libpthreadZdsoZd0     // libpthread.so.0
> > ++#else
> > ++#  define  VG_Z_LIBPTHREAD_SONAME  libcZdZa              // libc.*
> > ++#endif
> > + #elif defined(VGO_darwin)
> > + #  define  VG_Z_LIBPTHREAD_SONAME  libSystemZdZaZddylib  // libSystem.*.dylib
> > + #elif defined(VGO_solaris)
> > +-- 
> > +2.1.4
> > +
> > diff --git a/package/valgrind/valgrind.mk b/package/valgrind/valgrind.mk
> > index 5849b49..46ba13e 100644
> > --- a/package/valgrind/valgrind.mk
> > +++ b/package/valgrind/valgrind.mk
> > @@ -12,6 +12,9 @@ VALGRIND_LICENSE_FILES = COPYING COPYING.DOCS
> >  VALGRIND_CONF_OPTS = --disable-ubsan
> >  VALGRIND_INSTALL_STAGING = YES
> >  
> > +# patch 0004-Fixes-for-musl-libc.patch touching configure.ac
> > +VALGRIND_AUTORECONF = YES
> > +
> >  ifeq ($(BR2_GCC_ENABLE_TLS),y)
> >  VALGRIND_CONF_OPTS += --enable-tls
> >  else
> > 
> 
>