gcc-4.4.1: Disable libdecnumber for uclibc target.

We do not set FENV in uclibc so as a result we can
not build libdecnumber. We disable it for gcc 4.4.1
uclibc targets.

copysignl is in libm in uclibc so gcc complains about
this function in libgcc. We see if it is uclibc powerpc
softfloat then we add -lm to linker commandline. Not best
but works.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 259 insertions, 0 deletions

diff --git a/recipes/gcc/gcc-4.4.1/gcc-link-libgcc-with-libm.patch b/recipes/gcc/gcc-4.4.1/gcc-link-libgcc-with-libm.patch
new file mode 100644
index 0000000000..0db3a362b3
--- /dev/null
+++ b/recipes/gcc/gcc-4.4.1/gcc-link-libgcc-with-libm.patch
@@ -0,0 +1,259 @@
+
+<tches-return-228648-listarch-gcc-patches=gcc dot gnu dot org at gcc dot gnu dot org Tue Oct 07 18:11:15 2008
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+Date: Tue, 7 Oct 2008 20:10:19 +0200
+From: Bernhard Reutner-Fischer <rep dot dot dot nop at gmail dot com>
+To: Ian Lance Taylor <iant at google dot com>
+Cc: gcc-patches at gcc dot gnu dot org
+Subject: Re: [PATCH] link libgcc_s.so against a lib containing copysignl on 	powerpc-*-linux-uclibc
+Message-ID: <20081007181019.GB5178@mx.loc>
+References: <20081007141721.GG9250@mx.loc> <m33aj82wcc.fsf@google.com>
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+--rwEMma7ioTxnRzrJ
+Content-Type: text/plain; charset=us-ascii
+Content-Disposition: inline
+
+On Tue, Oct 07, 2008 at 09:39:31AM -0700, Ian Lance Taylor wrote:
+>Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> writes:
+>
+>> gcc/ChangeLog:
+>>
+>> 2008-10-07  Bernhard Reutner-Fischer  <>
+>>
+>> 	* config/t-slibgcc-elf-ver (SHLIB_LC): Also link against
+>> 	@libgcc_libm@.
+>>
+>> libgcc/ChangeLog:
+>>
+>> 2008-10-07  Bernhard Reutner-Fischer  <>
+>>
+>> 	* configure.ac (libgcc_cv_copysignl_lib, LIBGCC_LIBM): New
+>> 	variables to denote if we are on powerpc-uclibc where libm
+>> 	functions live in libm.
+>> 	* Makefile.in (LIBGCC_LIBM): Set.
+>> 	(libgcc_s$(SHLIB_EXT)): Substitute @libgcc_libm@ with
+>> 	$(LIBGCC_LIBM).
+>> 	* (configure): Regenerate.
+>
+>
+>> +# On powerpc libgcc_s references copysignl which is a libm function but
+>> +# glibc apparently also provides it via libc as opposed to uClibc where
+>> +# it lives in libm.
+>> +dnl save_LIBS="$LIBS"
+>> +dnl LIBS=
+>> +dnl AC_SEARCH_LIBS(copysignl, m)
+>> +dnl LIBGCC_LIBS="$LIBS"
+>> +dnl LIBS="$save_LIBS"
+>> +dnl AC_SUBST(LIBGCC_LIBS)
+>
+>Why don't you run these commands listed as dnl?
+
+I don't have a working compiler here yet and GCC_NO_EXECUTABLES. I can
+only assemble, not link (we're about to build the libgcc for the
+compiler here).
+>
+>> +AC_CACHE_CHECK([for library containing copysignl],
+>> +  libgcc_cv_copysignl_lib, [
+>> +    echo '#include <features.h>' > conftest.c
+>> +    case $target_alias in
+>> +    *powerpc*)
+>> +	echo 'int the_libc = __UCLIBC__;' >> conftest.c
+>> +	;;
+>> +    *)
+>> +	echo 'int the_libc; /* dummy */' >> conftest.c
+>> +	;;
+>> +    esac
+>> +    libgcc_cv_copysignl_lib="-lc"
+>> +    if AC_TRY_COMMAND(${CC-cc} -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD)
+>> +    then
+>> +	libgcc_cv_copysignl_lib="-lm"
+>> +    fi
+>
+>AC_TRY_COMMAND is not part of the documented set of autoconf
+>commands.  And this test seems reversed: shouldn't you add -lm if
+>AC_TRY_COMMAND fails?
+
+AC_TRY_COMMAND is used in the same file to check visibility support.
+An alternative would be to run nm(1), but for that i need to know the
+location of libc and libm so AC_TRY_COMMAND was easier.
+
+The test is supposed to
+- pass only on powerpc-*-*-uclibc*
+- fail otherwise
+so yes, that isn't quite right and should drop the case statement and
+check something like __UCLIBC__ + __powerpc__ instead (or use #if
+!defined\n#else\n#error glibm\n#endif but that would be more echo
+invocations).
+
+
+>I don't see any reason to write shell code that tests $target_alias
+
+true.
+
+>(and shouldn't it be $host_alias anyhow)?  Just write C code that does
+>"#ifdef PPC"?
+
+It can't be the host_alias, we can as well build either a
+build=host=i386,target=ppc (cross-compiler) or a
+build=i386,host=target=ppc ("native" compiler, cross-compiled).
+>
+>The basic idea seems fine, though.
+
+Thanks. I'm attaching an updated patch, ChangeLog remains the same.
+Ok for trunk?
+
+--rwEMma7ioTxnRzrJ
+Content-Type: text/x-diff; charset=us-ascii
+Content-Disposition: attachment; filename="820-powerpc-softfloat-libm_for_copysignl.patch"
+
+diff -rdup gcc-4.4.0.old/gcc/config/t-slibgcc-elf-ver gcc-4.4.0/gcc/config/t-slibgcc-elf-ver
+--- gcc-4.4.0.old/gcc/config/t-slibgcc-elf-ver	2005-10-31 18:03:08.000000000 +0100
++++ gcc-4.4.0/gcc/config/t-slibgcc-elf-ver	2008-10-07 19:28:13.000000000 +0200
+@@ -9,7 +9,7 @@ SHLIB_MAP = @shlib_map_file@
+ SHLIB_OBJS = @shlib_objs@
+ SHLIB_DIR = @multilib_dir@
+ SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
+-SHLIB_LC = -lc
++SHLIB_LC = @libgcc_libm@ -lc
+ 
+ SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
+ 	-Wl,--soname=$(SHLIB_SONAME) \
+diff -rdup gcc-4.4.0.old/libgcc/configure gcc-4.4.0/libgcc/configure
+--- gcc-4.4.0.old/libgcc/configure	2008-07-17 10:40:53.000000000 +0200
++++ gcc-4.4.0/libgcc/configure	2008-10-07 19:40:48.000000000 +0200
+@@ -272,7 +272,7 @@ PACKAGE_STRING='GNU C Runtime Library 1.
+ PACKAGE_BUGREPORT=''
+ 
+ ac_unique_file="static-object.mk"
+-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libgcc_topdir enable_shared slibdir INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA AWK build build_cpu build_vendor build_os host host_cpu host_vendor host_os host_noncanonical build_libsubdir build_subdir host_subdir target_subdir AR ac_ct_AR LIPO ac_ct_LIPO NM ac_ct_NM RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP decimal_float enable_decimal_float fixed_point vis_hide set_have_cc_tls tmake_file extra_parts asm_hidden_op LIBOBJS LTLIBOBJS'
++ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libgcc_topdir enable_shared slibdir INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA AWK build build_cpu build_vendor build_os host host_cpu host_vendor host_os host_noncanonical build_libsubdir build_subdir host_subdir target_subdir AR ac_ct_AR LIPO ac_ct_LIPO NM ac_ct_NM RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP decimal_float enable_decimal_float fixed_point vis_hide set_have_cc_tls LIBGCC_LIBM tmake_file extra_parts asm_hidden_op LIBOBJS LTLIBOBJS'
+ ac_subst_files=''
+ ac_pwd=`pwd`
+ 
+@@ -3522,6 +3522,39 @@ if test "$enable_tls $gcc_cv_have_cc_tls
+ fi
+ 
+ 
++# On powerpc libgcc_s references copysignl which is a libm function but
++# glibc apparently also provides it via libc as opposed to uClibc where
++# it lives in libm.
++echo "$as_me:$LINENO: checking for library containing copysignl" >&5
++echo $ECHO_N "checking for library containing copysignl... $ECHO_C" >&6
++if test "${libgcc_cv_copysignl_lib+set}" = set; then
++  echo $ECHO_N "(cached) $ECHO_C" >&6
++else
++
++    echo '#include <features.h>' > conftest.c
++    echo 'int the_libc = __UCLIBC__ + __powerpc__;' >> conftest.c
++    libgcc_cv_copysignl_lib="-lc"
++    if { ac_try='${CC-cc} -S conftest.c -o conftest.s 1>&5'
++  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
++  (eval $ac_try) 2>&5
++  ac_status=$?
++  echo "$as_me:$LINENO: \$? = $ac_status" >&5
++  (exit $ac_status); }; }
++    then
++	libgcc_cv_copysignl_lib="-lm"
++    fi
++    rm -f conftest.*
++
++fi
++echo "$as_me:$LINENO: result: $libgcc_cv_copysignl_lib" >&5
++echo "${ECHO_T}$libgcc_cv_copysignl_lib" >&6
++
++case /${libgcc_cv_copysignl_lib}/ in
++  /-lm/) LIBGCC_LIBM="$LIBGCC_LIBM -lm" ;;
++  *) LIBGCC_LIBM= ;;
++esac
++
++
+ # Conditionalize the makefile for this target machine.
+ tmake_file_=
+ for f in ${tmake_file}
+@@ -4242,6 +4275,7 @@ s,@enable_decimal_float@,$enable_decimal
+ s,@fixed_point@,$fixed_point,;t t
+ s,@vis_hide@,$vis_hide,;t t
+ s,@set_have_cc_tls@,$set_have_cc_tls,;t t
++s,@LIBGCC_LIBM@,$LIBGCC_LIBM,;t t
+ s,@tmake_file@,$tmake_file,;t t
+ s,@extra_parts@,$extra_parts,;t t
+ s,@asm_hidden_op@,$asm_hidden_op,;t t
+diff -rdup gcc-4.4.0.old/libgcc/configure.ac gcc-4.4.0/libgcc/configure.ac
+--- gcc-4.4.0.old/libgcc/configure.ac	2008-07-17 10:40:53.000000000 +0200
++++ gcc-4.4.0/libgcc/configure.ac	2008-10-07 19:34:48.000000000 +0200
+@@ -203,6 +203,27 @@ if test "$enable_tls $gcc_cv_have_cc_tls
+ fi
+ AC_SUBST(set_have_cc_tls)
+ 
++# On powerpc libgcc_s references copysignl which is a libm function but
++# glibc apparently also provides it via libc as opposed to uClibc where
++# it lives in libm.
++AC_CACHE_CHECK([for library containing copysignl],
++  libgcc_cv_copysignl_lib, [
++    echo '#include <features.h>' > conftest.c
++    echo 'int the_libc = __UCLIBC__ + __powerpc__;' >> conftest.c
++    libgcc_cv_copysignl_lib="-lc"
++    if AC_TRY_COMMAND(${CC-cc} -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD)
++    then
++	libgcc_cv_copysignl_lib="-lm"
++    fi
++    rm -f conftest.*
++  ])
++
++case /${libgcc_cv_copysignl_lib}/ in
++  /-lm/) LIBGCC_LIBM="$LIBGCC_LIBM -lm" ;;
++  *) LIBGCC_LIBM= ;;
++esac
++AC_SUBST(LIBGCC_LIBM)
++
+ # Conditionalize the makefile for this target machine.
+ tmake_file_=
+ for f in ${tmake_file}
+diff -rdup gcc-4.4.0.old/libgcc/Makefile.in gcc-4.4.0/libgcc/Makefile.in
+--- gcc-4.4.0.old/libgcc/Makefile.in	2008-07-17 10:40:53.000000000 +0200
++++ gcc-4.4.0/libgcc/Makefile.in	2008-10-07 19:28:13.000000000 +0200
+@@ -40,6 +40,7 @@ enable_shared = @enable_shared@
+ decimal_float = @decimal_float@
+ enable_decimal_float = @enable_decimal_float@
+ fixed_point = @fixed_point@
++LIBGCC_LIBM = @LIBGCC_LIBM@
+ 
+ host_noncanonical = @host_noncanonical@
+ 
+@@ -786,9 +787,10 @@ libgcc_s$(SHLIB_EXT): $(libgcc-s-objects
+ 		@multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_objs@,$(objects),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
++		@libgcc_libm@,$(LIBGCC_LIBM),$(subst \
+ 		@shlib_map_file@,$(mapfile),$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(subst \
+-		@shlib_slibdir@,$(shlib_slibdir),$(SHLIB_LINK))))))))
++		@shlib_slibdir@,$(shlib_slibdir),$(SHLIB_LINK)))))))))
+ 
+ libunwind$(SHLIB_EXT): $(libunwind-s-objects) $(extra-parts)
+ 	# @multilib_flags@ is still needed because this may use
+
+--rwEMma7ioTxnRzrJ--