gcc-4.3.3: add a patch to link with the math lib to get copysignal
Conditionally apply the following patch by Bernhard Reutner-Fischer which solves a link error on powerpc (with softfloat or multilib) when using a shared libgcc_s. See: http://gcc.gnu.org/ml/gcc-patches/2008-10/msg00237.html http://www.nabble.com/PPC-won't-build-with-soft-float-td22772110.html Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Angus Salkeld
Peter Korsgaard
parent
04bb5c6004
commit
bb1f42e442
125
toolchain/gcc/4.3.3/powerpc-link-with-math-lib.patch.conditional
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125
toolchain/gcc/4.3.3/powerpc-link-with-math-lib.patch.conditional
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@ -0,0 +1,125 @@
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See: http://gcc.gnu.org/ml/gcc-patches/2008-10/msg00237.html
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Patch by: Bernhard Reutner-Fischer
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--- gcc-4.3.3/gcc/config/t-slibgcc-elf-ver 2005-02-20 00:44:10.000000000 +1300
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+++ gcc-4.3.3-p/gcc/config/t-slibgcc-elf-ver 2009-05-06 07:05:50.000000000 +1200
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@@ -9,7 +9,7 @@
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SHLIB_OBJS = @shlib_objs@
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SHLIB_DIR = @multilib_dir@
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SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
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-SHLIB_LC = -lc
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+SHLIB_LC = @libgcc_libm@ -lc
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SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
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-Wl,--soname=$(SHLIB_SONAME) \
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--- gcc-4.3.3/libgcc/configure 2008-11-21 06:09:53.000000000 +1300
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+++ gcc-4.3.3-p/libgcc/configure 2009-05-06 07:05:50.000000000 +1200
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@@ -272,7 +272,7 @@
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PACKAGE_BUGREPORT=''
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ac_unique_file="static-object.mk"
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-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'
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+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'
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ac_subst_files=''
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# Initialize some variables set by options.
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@@ -3505,6 +3505,39 @@
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fi
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+# On powerpc libgcc_s references copysignl which is a libm function but
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+# glibc apparently also provides it via libc as opposed to uClibc where
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+# it lives in libm.
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+echo "$as_me:$LINENO: checking for library containing copysignl" >&5
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+echo $ECHO_N "checking for library containing copysignl... $ECHO_C" >&6
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+if test "${libgcc_cv_copysignl_lib+set}" = set; then
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+ echo $ECHO_N "(cached) $ECHO_C" >&6
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+else
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+
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+ echo '#include <features.h>' > conftest.c
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+ echo 'int the_libc = __UCLIBC__ + __powerpc__;' >> conftest.c
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+ libgcc_cv_copysignl_lib="-lc"
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+ if { ac_try='${CC-cc} -S conftest.c -o conftest.s 1>&5'
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+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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+ (eval $ac_try) 2>&5
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+ ac_status=$?
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+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
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+ (exit $ac_status); }; }
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+ then
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+ libgcc_cv_copysignl_lib="-lm"
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+ fi
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+ rm -f conftest.*
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+
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+fi
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+echo "$as_me:$LINENO: result: $libgcc_cv_copysignl_lib" >&5
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+echo "${ECHO_T}$libgcc_cv_copysignl_lib" >&6
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+
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+case /${libgcc_cv_copysignl_lib}/ in
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+ /-lm/) LIBGCC_LIBM="$LIBGCC_LIBM -lm" ;;
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+ *) LIBGCC_LIBM= ;;
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+esac
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+
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+
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# Conditionalize the makefile for this target machine.
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tmake_file_=
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for f in ${tmake_file}
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@@ -4225,6 +4258,7 @@
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s,@fixed_point@,$fixed_point,;t t
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s,@vis_hide@,$vis_hide,;t t
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s,@set_have_cc_tls@,$set_have_cc_tls,;t t
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+s,@LIBGCC_LIBM@,$LIBGCC_LIBM,;t t
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s,@tmake_file@,$tmake_file,;t t
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s,@extra_parts@,$extra_parts,;t t
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s,@asm_hidden_op@,$asm_hidden_op,;t t
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--- gcc-4.3.3/libgcc/configure.ac 2008-11-21 06:09:53.000000000 +1300
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+++ gcc-4.3.3-p/libgcc/configure.ac 2009-05-06 07:05:50.000000000 +1200
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@@ -207,6 +207,27 @@
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fi
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AC_SUBST(set_have_cc_tls)
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+# On powerpc libgcc_s references copysignl which is a libm function but
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+# glibc apparently also provides it via libc as opposed to uClibc where
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+# it lives in libm.
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+AC_CACHE_CHECK([for library containing copysignl],
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+ libgcc_cv_copysignl_lib, [
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+ echo '#include <features.h>' > conftest.c
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+ echo 'int the_libc = __UCLIBC__ + __powerpc__;' >> conftest.c
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+ libgcc_cv_copysignl_lib="-lc"
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+ if AC_TRY_COMMAND(${CC-cc} -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD)
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+ then
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+ libgcc_cv_copysignl_lib="-lm"
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+ fi
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+ rm -f conftest.*
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+ ])
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+
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+case /${libgcc_cv_copysignl_lib}/ in
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+ /-lm/) LIBGCC_LIBM="$LIBGCC_LIBM -lm" ;;
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+ *) LIBGCC_LIBM= ;;
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+esac
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+AC_SUBST(LIBGCC_LIBM)
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+
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# Conditionalize the makefile for this target machine.
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tmake_file_=
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for f in ${tmake_file}
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--- gcc-4.3.3/libgcc/Makefile.in 2008-06-17 21:32:34.000000000 +1200
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+++ gcc-4.3.3-p/libgcc/Makefile.in 2009-05-06 07:05:50.000000000 +1200
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@@ -40,6 +40,7 @@
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decimal_float = @decimal_float@
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enable_decimal_float = @enable_decimal_float@
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fixed_point = @fixed_point@
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+LIBGCC_LIBM = @LIBGCC_LIBM@
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host_noncanonical = @host_noncanonical@
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@@ -738,9 +739,10 @@
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@multilib_dir@,$(MULTIDIR),$(subst \
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@shlib_objs@,$(objects),$(subst \
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@shlib_base_name@,libgcc_s,$(subst \
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+ @libgcc_libm@,$(LIBGCC_LIBM),$(subst \
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@shlib_map_file@,$(mapfile),$(subst \
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@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(subst \
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- @shlib_slibdir@,$(shlib_slibdir),$(SHLIB_LINK))))))))
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+ @shlib_slibdir@,$(shlib_slibdir),$(SHLIB_LINK)))))))))
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libunwind$(SHLIB_EXT): $(libunwind-s-objects) $(extra-parts)
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# @multilib_flags@ is still needed because this may use
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@ -178,6 +178,11 @@ endif
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ifeq ("$(strip $(ARCH))","armeb")
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toolchain/patch-kernel.sh $(GCC_DIR) toolchain/gcc/$(GCC_VERSION) arm-softfloat.patch.conditional
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endif
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endif
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ifeq ($(ARCH)-$(BR2_GCC_SHARED_LIBGCC),powerpc-y)
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ifneq ($(BR2_SOFT_FLOAT)$(BR2_ENABLE_MULTILIB),)
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toolchain/patch-kernel.sh $(GCC_DIR) toolchain/gcc/$(GCC_VERSION) powerpc-link-with-math-lib.patch.conditional
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endif
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endif
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touch $@
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