http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57897
Bug ID: 57897
Summary: pragma
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dongsheng.song at gmail dot com
Due to Bug 57848, I must build gcc 4.9 with '--with-arch=corei7', then the
cross compiler building success.
But when I use the cross compiler to build native compiler, it failed with:
x86_64-w64-mingw32-g++ -c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -I. -I.
-I/home/cauchy/vcs/svn/gcc/trunk/gcc -I/home/cauchy/vcs/svn/gcc/trunk/gcc/.
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../include
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libcpp/include
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./gmp
-I/home/cauchy/vcs/svn/gcc/trunk/gmp
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./mpfr/src
-I/home/cauchy/vcs/svn/gcc/trunk/mpfr/src
-I/home/cauchy/vcs/svn/gcc/trunk/mpc/src
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libdecnumber
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libdecnumber/bid -I../libdecnumber
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libbacktrace -DCLOOG_INT_GMP
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./cloog/include
-I/home/cauchy/vcs/svn/gcc/trunk/cloog/include
-I/home/cauchy/vcs/svn/gcc/trunk/cloog/include
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./isl/include
-I/home/cauchy/vcs/svn/gcc/trunk/isl/include -I. -I.
-I/home/cauchy/vcs/svn/gcc/trunk/gcc -I/home/cauchy/vcs/svn/gcc/trunk/gcc/.
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../include
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libcpp/include
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./gmp
-I/home/cauchy/vcs/svn/gcc/trunk/gmp
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./mpfr/src
-I/home/cauchy/vcs/svn/gcc/trunk/mpfr/src
-I/home/cauchy/vcs/svn/gcc/trunk/mpc/src
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libdecnumber
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libdecnumber/bid -I../libdecnumber
-I/home/cauchy/vcs/svn/gcc/trunk/gcc/../libbacktrace -DCLOOG_INT_GMP
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./cloog/include
-I/home/cauchy/vcs/svn/gcc/trunk/cloog/include
-I/home/cauchy/vcs/svn/gcc/trunk/cloog/include
-I/home/cauchy/obj/native/gcc-4.9-win64/gcc/./isl/include
-I/home/cauchy/vcs/svn/gcc/trunk/isl/include \
/home/cauchy/vcs/svn/gcc/trunk/gcc/config/i386/host-mingw32.c
In file included from
/home/cauchy/cross/x86_64-windows-gcc49/lib/gcc/x86_64-w64-mingw32/4.9.0/include/x86intrin.h:39:0,
from
/home/cauchy/cross/x86_64-windows-gcc49/x86_64-w64-mingw32/include/winnt.h:1369,
from
/home/cauchy/cross/x86_64-windows-gcc49/x86_64-w64-mingw32/include/windef.h:139,
from
/home/cauchy/cross/x86_64-windows-gcc49/x86_64-w64-mingw32/include/windows.h:69,
from
/home/cauchy/vcs/svn/gcc/trunk/gcc/config/i386/host-mingw32.c:29:
/home/cauchy/cross/x86_64-windows-gcc49/lib/gcc/x86_64-w64-mingw32/4.9.0/include/ammintrin.h:35:27:
sorry, unimplemented: -mno-fentry isn't compatible with SEH
#pragma GCC target("sse4a")
^
make[2]: *** [host-mingw32.o] Error 1
make[2]: Leaving directory `/home/cauchy/obj/native/gcc-4.9-win64/gcc/gcc'
make[1]: *** [install-strip-gcc] Error 2
make[1]: Leaving directory `/home/cauchy/obj/native/gcc-4.9-win64/gcc'
make: *** [install-strip] Error 2
>From http://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html
-fasynchronous-unwind-tables
Generate unwind table in DWARF 2 format, if supported by target machine.
There maybe something wrong, why when I use SEH, the gcc build script use
'-fasynchronous-unwind-tables' ?
$ cat x.c
#pragma GCC target("sse4a")
$ x86_64-w64-mingw32-g++ -c -fasynchronous-unwind-tables x.c
x.c:1:27: sorry, unimplemented: -mno-fentry isn't compatible with SEH
#pragma GCC target("sse4a")
^
$ x86_64-w64-mingw32-g++ -v
Using built-in specs.
COLLECT_GCC=x86_64-w64-mingw32-g++
COLLECT_LTO_WRAPPER=/home/cauchy/cross/x86_64-windows-gcc48/libexec/gcc/x86_64-w64-mingw32/4.8.2/lto-wrapper
Target: x86_64-w64-mingw32
Configured with: /home/cauchy/vcs/svn/gcc/branches/gcc-4_8-branch/configure
--prefix=/home/cauchy/cross/x86_64-windows-gcc48
--with-sysroot=/home/cauchy/cross/x86_64-windows-gcc48
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--target=x86_64-w64-mingw32 --disable-multilib --disable-nls
--enable-checking=release --enable-languages=c,c++,fortran --with-arch=core2
--with-tune=generic
Thread model: win32
gcc version 4.8.2 20130712 (prerelease) (GCC)
