From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22364 invoked by alias); 20 Jun 2012 12:05:07 -0000 Received: (qmail 22353 invoked by uid 22791); 20 Jun 2012 12:05:05 -0000 X-SWARE-Spam-Status: No, hits=-3.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_AV,TW_BG,TW_VT X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 20 Jun 2012 12:04:53 +0000 From: "windward at gmx dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/53731] New: [4.7] Bootstrap fails for libgfortran on Solaris 10 x86 with error "Where has __float128 gone?" Date: Wed, 20 Jun 2012 12:05:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: bootstrap X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: windward at gmx dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-06/txt/msg01329.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53731 Bug #: 53731 Summary: [4.7] Bootstrap fails for libgfortran on Solaris 10 x86 with error "Where has __float128 gone?" Classification: Unclassified Product: gcc Version: 4.7.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned@gcc.gnu.org ReportedBy: windward@gmx.com Created attachment 27665 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27665 Details GCC 4.7.1 fails to bootstrap on Solaris 10 due to a linker / multilib problem affecting the configure script. In file included from ./kinds.h:75:0, from /opt/SP/build/gcc/gcc-4.7.1/libgfortran/libgfortran.h:232, from /opt/SP/build/gcc/gcc-4.7.1/libgfortran/fmain.c:4: /opt/SP/build/gcc/gcc-4.7.1/libgfortran/kinds-override.h:40:5: error: #error "Where has __float128 gone?" gmake[6]: *** [fmain.lo] Error 1 gmake[6]: Leaving directory `/opt/SP/build/gcc/gcc-4.7.1-build/i386-pc-solaris2.10/amd64/libgfortran' Root cause is that the check for __float128 in the configure script fails since the linker does not use the 64bit libgcc due to a wrong LD_LIBRARY_PATH definition passed to the configure script (see attachment). configure:24967: checking whether we have a usable __float128 type configure:25054: /opt/SP/build/gcc/gcc-4.7.1-build/./gcc/xgcc -B/opt/SP/build/gcc/gcc-4.7.1-build/./gcc/ -B/opt/SP/gcc/g cc-4.7.1/i386-pc-solaris2.10/bin/ -B/opt/SP/gcc/gcc-4.7.1/i386-pc-solaris2.10/lib/ -isystem /opt/SP/gcc/gcc-4.7.1/i386-p c-solaris2.10/include -isystem /opt/SP/gcc/gcc-4.7.1/i386-pc-solaris2.10/sys-include -m64 -o conftest -std=gnu99 -g -O2 -march=core2 -mfpmath=sse -msse3 -mno-ssse3 -mno-avx -I/opt/SP/gcc/gcc-4.7.1/include -I/opt/SP/gcc/current/include -I/u sr/sfw/include conftest.c >&5 ld: warning: file /opt/SP/gcc/current/lib/gcc/platform/current//libgcc.a(_divtc3.o): wrong ELF class: ELFCLASS32 Undefined first referenced symbol in file __divtc3 /var/tmp//cc6TdICW.o __divtf3 /var/tmp//cc6TdICW.o __multf3 /var/tmp//cc6TdICW.o ld: fatal: Symbol referencing errors. No output written to conftest collect2: error: ld returned 1 exit status One workaround is to add MULTISUBDIR to the HOST_LIB_PATH_gcc in the Makefile. I patched ./Makefile.in and the build works, although I don't know if this is the right way to achieve this... @@ -629,7 +629,7 @@ HOST_LIB_PATH = $(HOST_LIB_PATH_bfd)$(HO # Define HOST_LIB_PATH_gcc here, for the sake of TARGET_LIB_PATH, ouch @if gcc -HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc$(MULTISUBDIR)$(GCC_SHLIB_SUBDIR):$$r/$(HOST_SUBDIR)/prev-gcc$(MULTISUBDIR)$(GCC_SHLIB_SUBDIR): +HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc$(GCC_SHLIB_SUBDIR):$$r/$(HOST_SUBDIR)/prev-gcc$(GCC_SHLIB_SUBDIR): @endif gcc