Il 30/09/2014 15:57, Zhi Yong Wu ha scritto: > libtool --mode=link --tag=CC c++ -m64 -D_GNU_SOURCE > -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes > -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes > -fno-strict-aliasing -fno-common -Wendif-labels > -Wmissing-include-dirs -Wnested-externs -Wformat-security -Wformat-y2k > -Winit-self -Wold-style-definition -fstack-protector-all > -I/usr/include/libpng12 -I/home/zhiyong.wzy/qemu/pixman/pixman > -I/home/zhiyong.wzy/qemu/pixman/pixman -I/home/zhiyong.wzy/qemu/tests > -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -pthread > -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -g > -Wl,--warn-common -m64 -g -o vscclient libcacard/vscclient.o > libcacard.la -Wc,-fstack-protector-all -lm -pthread -L/lib64 > -lgthread-2.0 -lglib-2.0 -lz -lrt -lz -luuid -lutil > c++ -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE > -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings > -Wmissing-prototypes -fno-strict-aliasing -fno-common -Wendif-labels > -Wmissing-include-dirs -Wnested-externs -Wformat-security -Wformat-y2k > -Winit-self -Wold-style-definition -fstack-protector-all > -I/usr/include/libpng12 -I/home/zhiyong.wzy/qemu/pixman/pixman > -I/home/zhiyong.wzy/qemu/pixman/pixman -I/home/zhiyong.wzy/qemu/tests > -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -pthread > -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -g > -Wl,--warn-common -m64 -g -o .libs/vscclient libcacard/vscclient.o > -Wl,-fstack-protector-all -pthread ./.libs/libcacard.so -lssl3 > -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl > -L/lib64 -lm -lgthread-2.0 -lglib-2.0 -lrt -lz -luuid -lutil > -Wl,--rpath -Wl,/usr/local/lib > /usr/bin/ld: -f may not be used without -shared
So the problem seems to be with "-Wl,-fstack-protector-all". Where does it come from? QEMU or some pkg-config file? Does it work if you configure with the --disable-stack-protector option? Paolo