At Wed, 27 Sep 2006 21:48:40 +0200,
Elimar Riesebieter wrote:
>
> On Wed, 27 Sep 2006 the mental interface of
> Takashi Iwai told:
>
> > At Wed, 27 Sep 2006 20:07:56 +0200,
> > Elimar Riesebieter wrote:
> > >
> > > On Wed, 27 Sep 2006 the mental interface of
> > > Jaroslav Kysela told:
> > >
> > > > On Tue, 26 Sep 2006, Elimar Riesebieter wrote:
> > > >
> > > > > Hi all,
> > > > >
> > > > > I am testing 1.0.13rc3 (lib/driver/utils) on PPC/2.6.18
> > > > >
> > > > > Starting a soundapp like moc gives:
> > > > >
> > > > > "relocation error: mocp: symbol snd_pcm_hw_params_get_channels_min,
> > > > > version ALSA_0.9.0rc4 not defined in file libasound.so.2 with link
> > > > > time reference"
> > > > >
> > > > > Any hints?
> > > >
> > > > What is output from commands 'nm /usr/lib/libasound.so.2 | grep
> > > > snd_pcm_hw_params_get_channels_min'
> > >
> > > nm: /usr/lib/libasound.so.2: no symbols
> > >
> > > > and 'nm mocp | grep
> > > > snd_pcm_hw_params_get_channels_min'?
> > >
> > > nm: /usr/bin/mocp: no symbols
> >
> > The symbols are stripped.
> > Use objdump, e.g. with -T option, instead.
>
> root@samweis ~ # objdump -T `which mocp` | grep
> snd_pcm_hw_params_get_channels_min
> 1005ca20 DF *UND* 0000002c ALSA_0.9.0rc4 \
> snd_pcm_hw_params_get_channels_min
> root@samweis ~ # objdump -T /usr/lib/libasound.so.2 | grep
> snd_pcm_hw_params_get_channels_min
> 00057aa0 g DF .text 0000002c ALSA_0.9 \
> __snd_pcm_hw_params_get_channels_min
> 00057aa0 w DF .text 0000002c ALSA_0.9 \
> snd_pcm_hw_params_get_channels_min
Hm, the versions are not seen here.
> Hmmm, why there are different versions? 1.0.13rc2 works fine.
If 1.0.13rc2 works, a skeptical change is the prefix check below.
Could you revert this patch and try whether it works?
Also, what is defined as __SYMBOL_PREFIX in config.h?
Takashi
# HG changeset patch
# User tiwai
# Date 1158682071 -7200
# Node ID aea9a680d2825ad040aa8a427d6c55d643a75f56
# Parent 8bdd686087881ce878ab56be3768f2077308a00d
add support for hosts that have custom symbol prefixes
From: Mike Frysinger <vapier@xxxxxxxxxx>
some architectures, like Blackfin, have a prefix added to all symbols (in our
case it's historical baggage)
while normally packages shouldnt care, when code starts mixing assembler with
C (like symbol versioning), you need to dip down into the inner details.
find attached a patch which queries gcc for the prefix (all gcc toolchains
have a builtin define of __USER_LABEL_PREFIX__) and then automatically has
asm() constructs utilize this
since most targets define __USER_LABEL_PREFIX__ to nothing, hopefully this
shouldnt cause any problems :)
diff -r 8bdd68608788 -r aea9a680d282 configure.in
--- a/configure.in Mon Sep 18 17:57:58 2006 +0200
+++ b/configure.in Tue Sep 19 18:07:51 2006 +0200
@@ -34,6 +34,7 @@ fi
AC_PROG_CC
+AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_DISABLE_STATIC
@@ -104,6 +105,16 @@ else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL(VERSIONED_SYMBOLS, test x$versioned = xyes)
+
+dnl See if toolchain has a custom prefix for symbols ...
+AC_MSG_CHECKING(for custom symbol prefixes)
+SYMBOL_PREFIX=` \
+ echo "PREFIX=__USER_LABEL_PREFIX__" \
+ | ${CPP-${CC-gcc} -E} - 2>&1 \
+ | ${EGREP-grep} "^PREFIX=" \
+ | ${SED-sed} "s:^PREFIX=::"`
+AC_DEFINE_UNQUOTED([__SYMBOL_PREFIX], "$SYMBOL_PREFIX", [Toolchain Symbol Prefix])
+AC_MSG_RESULT($SYMBOL_PREFIX)
dnl Check for debug...
AC_MSG_CHECKING(for debug)
diff -r 8bdd68608788 -r aea9a680d282 include/alsa-symbols.h
--- a/include/alsa-symbols.h Mon Sep 18 17:57:58 2006 +0200
+++ b/include/alsa-symbols.h Tue Sep 19 18:07:51 2006 +0200
@@ -31,16 +31,16 @@
#ifdef __powerpc64__
# define symbol_version(real, name, version) \
- __asm__ (".symver " #real "," #name "@" #version); \
- __asm__ (".symver ." #real ",." #name "@" #version)
+ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@" #version); \
+ __asm__ (".symver ." ASM_NAME(#real) ",." ASM_NAME(#name) "@" #version)
# define default_symbol_version(real, name, version) \
- __asm__ (".symver " #real "," #name "@@" #version); \
- __asm__ (".symver ." #real ",." #name "@@" #version)
+ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@@" #version); \
+ __asm__ (".symver ." ASM_NAME(#real) ",." ASM_NAME(#name) "@@" #version)
#else
# define symbol_version(real, name, version) \
- __asm__ (".symver " #real "," #name "@" #version)
+ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@" #version)
# define default_symbol_version(real, name, version) \
- __asm__ (".symver " #real "," #name "@@" #version)
+ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@@" #version)
#endif
#ifdef USE_VERSIONED_SYMBOLS
@@ -52,19 +52,19 @@
#define use_symbol_version(real, name, version) /* nothing */
#ifdef __powerpc64__
#define use_default_symbol_version(real, name, version) \
- __asm__ (".weak " #name); \
- __asm__ (".weak ." #name); \
- __asm__ (".set " #name "," #real); \
- __asm__ (".set ." #name ",." #real)
+ __asm__ (".weak " ASM_NAME(#name)); \
+ __asm__ (".weak ." ASM_NAME(#name)); \
+ __asm__ (".set " ASM_NAME(#name) "," ASM_NAME(#real)); \
+ __asm__ (".set ." ASM_NAME(#name) ",." ASM_NAME(#real))
#else
#if defined(__alpha__) || defined(__mips__)
#define use_default_symbol_version(real, name, version) \
- __asm__ (".weak " #name); \
- __asm__ (#name " = " #real)
+ __asm__ (".weak " ASM_NAME(#name)); \
+ __asm__ (ASM_NAME(#name) " = " ASM_NAME(#real))
#else
#define use_default_symbol_version(real, name, version) \
- __asm__ (".weak " #name); \
- __asm__ (".set " #name "," #real)
+ __asm__ (".weak " ASM_NAME(#name)); \
+ __asm__ (".set " ASM_NAME(#name) "," ASM_NAME(#real))
#endif
#endif
#endif
diff -r 8bdd68608788 -r aea9a680d282 include/local.h
--- a/include/local.h Mon Sep 18 17:57:58 2006 +0200
+++ b/include/local.h Tue Sep 19 18:07:51 2006 +0200
@@ -192,6 +192,9 @@ extern snd_lib_error_handler_t snd_err_m
/* When a reference to SYMBOL is encountered, the linker will emit a
warning message MSG. */
+
+#define ASM_NAME(name) __SYMBOL_PREFIX name
+
#ifdef HAVE_GNU_LD
# ifdef HAVE_ELF
@@ -210,19 +213,19 @@ extern snd_lib_error_handler_t snd_err_m
section attributes on what looks like a comment to the assembler. */
# ifdef HAVE_SECTION_QUOTES
# define link_warning(symbol, msg) \
- __make_section_unallocated (".gnu.warning." #symbol) \
+ __make_section_unallocated (".gnu.warning." ASM_NAME(#symbol)) \
static const char __evoke_link_warning_##symbol[] \
- __attribute__ ((section (".gnu.warning." #symbol "\"\n\t#\""))) = msg;
+ __attribute__ ((section (".gnu.warning." ASM_NAME(#symbol) "\"\n\t#\""))) = msg;
# else
# define link_warning(symbol, msg) \
- __make_section_unallocated (".gnu.warning." #symbol) \
+ __make_section_unallocated (".gnu.warning." ASM_NAME(#symbol)) \
static const char __evoke_link_warning_##symbol[] \
- __attribute__ ((section (".gnu.warning." #symbol "\n\t#"))) = msg;
+ __attribute__ ((section (".gnu.warning." ASM_NAME(#symbol) "\n\t#"))) = msg;
# endif
# else
# define link_warning(symbol, msg) \
asm (".stabs \"" msg "\",30,0,0,0\n\t" \
- ".stabs \"" __SYMBOL_PREFIX #symbol "\",1,0,0,0\n");
+ ".stabs \"" ASM_NAME(#symbol) "\",1,0,0,0\n");
# endif
#else
/* We will never be heard; they will all die horribly. */
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys -- and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-devel
