I am getting this on Ubuntu 11.10/amd64. If I remove the
--with-build-config=bootstrap-lto, the build succeeds just fine. Is this a
known problem, or should I file a bug? (A search of bugzilla didn't bring
up this specific symptom.)
matt@matt-desktop:~/src/gcc-trunk/obj$ ../configure --enable-bootstrap
--prefix=/home/matt --enable-clocale=gnu --with-system-zlib
--enable-shared --with-demangler-in-ld --enable-lto
--with-build-config=bootstrap-lto --with-fpmath=sse
--enable-languages=c,c++,lto
matt@matt-desktop:~/src/gcc-trunk/obj$ make -j7
make "DESTDIR=" "RPATH_ENVVAR=LD_LIBRARY_PATH"
"TARGET_SUBDIR=x86_64-unknown-linux-gnu" "bindir=/home/matt/bin"
"datadir=/home/matt/share" "exec_prefix=/home/matt"
"includedir=/home/matt/include" "datarootdir=/home/matt/share"
"docdir=/home/matt/share/doc/" "infodir=/home/matt/share/info"
"pdfdir=/home/matt/share/doc/" "htmldir=/home/matt/share/doc/"
"libdir=/home/matt/lib" "libexecdir=/home/matt/libexec" "lispdir="
"localstatedir=/home/matt/var" "mandir=/home/matt/share/man"
"oldincludedir=/usr/include" "prefix=/home/matt" "sbindir=/home/matt/sbin"
"sharedstatedir=/home/matt/com" "sysconfdir=/home/matt/etc"
"tooldir=/home/matt/x86_64-unknown-linux-gnu"
"build_tooldir=/home/matt/x86_64-unknown-linux-gnu"
"target_alias=x86_64-unknown-linux-gnu" "AWK=gawk" "BISON=bison"
"CC_FOR_BUILD=gcc" "CFLAGS_FOR_BUILD=-g -O2" "CXX_FOR_BUILD=g++"
"EXPECT=expect" "FLEX=flex" "INSTALL=/usr/bin/install -c"
"INSTALL_DATA=/usr/bin/install -c -m 644"
"INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c"
"LDFLAGS_FOR_BUILD=" "LEX=flex" "M4=m4" "MAKE=make" "RUNTEST=runtest"
"RUNTESTFLAGS=" "SED=/bin/sed" "SHELL=/bin/bash" "YACC=bison -y" "`echo
'ADAFLAGS=' | sed -e s'/[^=][^=]*=$/XFOO=/'`" "ADA_CFLAGS=" "AR_FLAGS=rc"
"`echo 'BOOT_ADAFLAGS=-gnatpg -gnata' | sed -e s'/[^=][^=]*=$/XFOO=/'`"
"BOOT_CFLAGS=-g -O2" "BOOT_LDFLAGS=" "CFLAGS=-g -O2" "CXXFLAGS=-g -O2"
"LDFLAGS=" "LIBCFLAGS=-g -O2" "LIBCXXFLAGS=-g -O2 -fno-implicit-templates"
"STAGE1_CHECKING=--enable-checking=yes,types" "STAGE1_LANGUAGES=c,c++,lto"
"GNATBIND=gnatbind" "GNATMAKE=gnatmake" "AR_FOR_TARGET=ar"
"AS_FOR_TARGET=as" "CC_FOR_TARGET=/home/matt/src/gcc-trunk/obj/./gcc/xgcc
-B/home/matt/src/gcc-trunk/obj/./gcc/" "CFLAGS_FOR_TARGET=-g -O2"
"CPPFLAGS_FOR_TARGET=" "CXXFLAGS_FOR_TARGET=-g -O2 -D_GNU_SOURCE"
"DLLTOOL_FOR_TARGET=dlltool"
"FLAGS_FOR_TARGET=-B/home/matt/x86_64-unknown-linux-gnu/bin/
-B/home/matt/x86_64-unknown-linux-gnu/lib/ -isystem
/home/matt/x86_64-unknown-linux-gnu/include -isystem
/home/matt/x86_64-unknown-linux-gnu/sys-include" "GCJ_FOR_TARGET="
"GFORTRAN_FOR_TARGET=" "GOC_FOR_TARGET=" "GOCFLAGS_FOR_TARGET=-O2 -g"
"LD_FOR_TARGET=ld" "LIPO_FOR_TARGET=lipo" "LDFLAGS_FOR_TARGET="
"LIBCFLAGS_FOR_TARGET=-g -O2" "LIBCXXFLAGS_FOR_TARGET=-g -O2 -D_GNU_SOURCE
-fno-implicit-templates" "NM_FOR_TARGET=nm" "OBJDUMP_FOR_TARGET=objdump"
"RANLIB_FOR_TARGET=ranlib" "READELF_FOR_TARGET=readelf"
"STRIP_FOR_TARGET=strip" "WINDRES_FOR_TARGET=windres"
"WINDMC_FOR_TARGET=windmc" "BUILD_CONFIG=bootstrap-lto" "`echo
'LANGUAGES=' | sed -e s'/[^=][^=]*=$/XFOO=/'`" "LEAN=false"
"STAGE1_CFLAGS=-g -fkeep-inline-functions" "STAGE1_CXXFLAGS=-g
-fkeep-inline-functions" "STAGE1_TFLAGS=" "STAGE2_CFLAGS=-g -O2
-flto=jobserver -frandom-seed=1" "STAGE2_CXXFLAGS=-g -O2 -flto=jobserver
-frandom-seed=1" "STAGE2_TFLAGS=" "STAGE3_CFLAGS=-g -O2 -flto=jobserver
-frandom-seed=1" "STAGE3_CXXFLAGS=-g -O2 -flto=jobserver -frandom-seed=1"
"STAGE3_TFLAGS=" "STAGE4_CFLAGS=-g -O2" "STAGE4_CXXFLAGS=-g -O2"
"STAGE4_TFLAGS=" "STAGEprofile_CFLAGS=-g -O2 -flto=jobserver
-frandom-seed=1 -fprofile-generate -fno-lto" "STAGEprofile_CXXFLAGS=-g -O2
-flto=jobserver -frandom-seed=1 -fprofile-generate -fno-lto"
"STAGEprofile_TFLAGS=" "STAGEfeedback_CFLAGS=-g -O2 -flto=jobserver
-frandom-seed=1 -fprofile-use" "STAGEfeedback_CXXFLAGS=-g -O2
-flto=jobserver -frandom-seed=1 -fprofile-use" "STAGEfeedback_TFLAGS="
"CXX_FOR_TARGET= $r/./gcc/g++ -B$r/./gcc/ -nostdinc++ `if test -f
$r/x86_64-unknown-linux-gnu/libstdc++-v3/scripts/testsuite_flags; then
/bin/bash $r/x86_64-unknown-linux-gnu/libstdc++-v3/scripts/testsuite_flags
--build-includes; else echo -funconfigured-libstdc++-v3 ; fi`
-L$r/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L$r/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs" "TFLAGS="
"CONFIG_SHELL=/bin/bash" "MAKEINFO=makeinfo --split-size=5000000
--split-size=5000000" compare
make[2]: Entering directory `/home/matt/src/gcc-trunk/obj'
make[3]: Entering directory `/home/matt/src/gcc-trunk/obj'
rm -f stage_current
make[3]: Leaving directory `/home/matt/src/gcc-trunk/obj'
Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
libcpp/lex.o differs
make[2]: *** [compare] Error 1
--
tangled strands of DNA explain the way that I behave.
http://www.clock.org/~matt
