diff options
Diffstat (limited to 'recipes/gcc/gcc-4.4.4/gcc-link-libgcc-with-libm.patch')
| -rw-r--r-- | recipes/gcc/gcc-4.4.4/gcc-link-libgcc-with-libm.patch | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/recipes/gcc/gcc-4.4.4/gcc-link-libgcc-with-libm.patch b/recipes/gcc/gcc-4.4.4/gcc-link-libgcc-with-libm.patch new file mode 100644 index 0000000000..51abdd8e9b --- /dev/null +++ b/recipes/gcc/gcc-4.4.4/gcc-link-libgcc-with-libm.patch @@ -0,0 +1,261 @@ + +<tches-return-228648-listarch-gcc-patches=gcc dot gnu dot org at gcc dot gnu dot org Tue Oct 07 18:11:15 2008 +Return-Path: <gcc-patches-return-228648-listarch-gcc-patches=gcc dot gnu dot org at gcc dot gnu dot org> +Delivered-To: listarch-gcc-patches at gcc dot gnu dot org +Received: (qmail 27356 invoked by alias); 7 Oct 2008 18:11:15 -0000 +Received: (qmail 27347 invoked by uid 22791); 7 Oct 2008 18:11:13 -0000 +X-Spam-Check-By: sourceware.org +Received: from fg-out-1718.google.com (HELO fg-out-1718.google.com) (72.14.220.154) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 07 Oct 2008 18:10:20 +0000 +Received: by fg-out-1718.google.com with SMTP id e21so2412591fga.28 for <gcc-patches@gcc.gnu.org>; Tue, 07 Oct 2008 11:10:15 -0700 (PDT) +Received: by 10.181.25.18 with SMTP id c18mr5278303bkj.61.1223403015435; Tue, 07 Oct 2008 11:10:15 -0700 (PDT) +Received: from s42.loc (85-127-249-102.dynamic.xdsl-line.inode.at [85.127.249.102]) by mx.google.com with ESMTPS id b17sm14173957fka.7.2008.10.07.11.10.13 (version=TLSv1/SSLv3 cipher=RC4-MD5); Tue, 07 Oct 2008 11:10:14 -0700 (PDT) +Received: from cow by s42.loc with local (Exim 4.69) (envelope-from <rep.dot.nop@gmail.com>) id 1KnH0l-00050F-7O; Tue, 07 Oct 2008 20:10:19 +0200 +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> +MIME-Version: 1.0 +Content-Type: multipart/mixed; boundary="rwEMma7ioTxnRzrJ" +Content-Disposition: inline +In-Reply-To: <m33aj82wcc dot fsf at google dot com> +User-Agent: Mutt/1.5.18 (2008-05-17) +Mailing-List: contact gcc-patches-help at gcc dot gnu dot org; run by ezmlm +Precedence: bulk +List-Id: <gcc-patches.gcc.gnu.org> +List-Archive: <http://gcc.gnu.org/ml/gcc-patches/> +List-Post: <mailto:gcc-patches at gcc dot gnu dot org> +List-Help: <mailto:gcc-patches-help at gcc dot gnu dot org> +Sender: gcc-patches-owner at gcc dot gnu dot org +Delivered-To: mailing list gcc-patches at gcc dot gnu dot org + + +--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" + +Index: gcc-4.4.3/gcc/config/t-slibgcc-elf-ver +=================================================================== +--- gcc-4.4.3.orig/gcc/config/t-slibgcc-elf-ver 2010-01-04 07:13:08.000000000 -0800 ++++ gcc-4.4.3/gcc/config/t-slibgcc-elf-ver 2010-02-03 12:03:53.424789774 -0800 +@@ -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_MAKE_SOLINK = $(LN_S) $(SHLIB_SONAME) $(SHLIB_DIR)/$(SHLIB_SOLINK) + SHLIB_INSTALL_SOLINK = $(LN_S) $(SHLIB_SONAME) \ + $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK) +Index: gcc-4.4.3/libgcc/configure +=================================================================== +--- gcc-4.4.3.orig/libgcc/configure 2008-11-20 09:13:01.000000000 -0800 ++++ gcc-4.4.3/libgcc/configure 2010-02-03 12:02:35.727326054 -0800 +@@ -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` + +@@ -3547,6 +3547,39 @@ 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 ${tmake_file} +@@ -4267,6 +4300,7 @@ s,@enable_decimal_float@,$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@,$asm_hidden_op,;t t +Index: gcc-4.4.3/libgcc/configure.ac +=================================================================== +--- gcc-4.4.3.orig/libgcc/configure.ac 2008-11-20 09:13:01.000000000 -0800 ++++ gcc-4.4.3/libgcc/configure.ac 2010-02-03 12:02:35.727326054 -0800 +@@ -223,6 +223,27 @@ if test "$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 ${tmake_file} +Index: gcc-4.4.3/libgcc/Makefile.in +=================================================================== +--- gcc-4.4.3.orig/libgcc/Makefile.in 2009-04-09 16:23:07.000000000 -0700 ++++ gcc-4.4.3/libgcc/Makefile.in 2010-02-03 12:02:35.727326054 -0800 +@@ -39,6 +39,7 @@ enable_shared = @enable_shared@ + decimal_float = @decimal_float@ + enable_decimal_float = @enable_decimal_float@ + fixed_point = @fixed_point@ ++LIBGCC_LIBM = @LIBGCC_LIBM@ + + host_noncanonical = @host_noncanonical@ + +@@ -787,9 +788,10 @@ libgcc_s$(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 |