Hi there,
After compiling a file I can attempt to link it while passing a --sysroot
argument. With my linaro ld, this works, but not with my debian ld (can not
find libc.so.6):
stephen@hal:~/dev/src/playground/cmake/build{master}$ strace -e open
/usr/bin/arm-linux-gnueabihf-ld --sysroot=/home/stephen/rpi/rasp-pi-rootfs -
export-dynamic -z relro -X --hash-style=gnu --build-id --eh-frame-hdr -m
armelf_linux_eabi -dynamic-linker /lib/ld-linux-armhf.so.3 -o foo
/home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/../../../arm-linux-gnueabihf/crt1.o /home/stephen/rpi/rasp-pi-
rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../../arm-linux-
gnueabihf/crti.o /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/crtbegin.o -L/home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-
linux-gnueabihf/4.6 -L/home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-
linux-gnueabihf/4.6/../../../arm-linux-gnueabihf -L/home/stephen/rpi/rasp-
pi-rootfs/lib/arm-linux-gnueabihf -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib/arm-linux-gnueabihf -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../.. -
L/home/stephen/rpi/rasp-pi-rootfs/lib -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib CMakeFiles/foo.dir/main.cpp.o -lstdc++ -lm -lgcc_s -lgcc -lc
-lgcc_s -lgcc /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/crtend.o /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-
linux-gnueabihf/4.6/../../../arm-linux-gnueabihf/crtn.o 2>&1 | grep
libc.so.6
open("/usr/x86_64-linux-gnu/arm-linux-gnueabihf/lib/libc.so.6", O_RDONLY|
O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/home/stephen/dev/prefix/qtbase/kde/lib/libc.so.6", O_RDONLY|
O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/home/stephen/dev/prefix/qtbase/lib/libc.so.6", O_RDONLY|O_CLOEXEC) =
-1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
open("/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY) = -1 ENOENT (No such
file or directory)
/usr/bin/arm-linux-gnueabihf-ld: cannot find /lib/arm-linux-
gnueabihf/libc.so.6 inside
stephen@hal:~/dev/src/playground/cmake/build{master}$ strace -e open
/home/stephen/rpi/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-ld --
sysroot=/home/stephen/rpi/rasp-pi-rootfs -export-dynamic -z relro -X --hash-
style=gnu --build-id --eh-frame-hdr -m armelf_linux_eabi -dynamic-linker
/lib/ld-linux-armhf.so.3 -o foo /home/stephen/rpi/rasp-pi-
rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../../arm-linux-
gnueabihf/crt1.o /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/../../../arm-linux-gnueabihf/crti.o /home/stephen/rpi/rasp-pi-
rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6/crtbegin.o -
L/home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6 -
L/home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/../../../arm-linux-gnueabihf -L/home/stephen/rpi/rasp-pi-
rootfs/lib/arm-linux-gnueabihf -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib/arm-linux-gnueabihf -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../.. -
L/home/stephen/rpi/rasp-pi-rootfs/lib -L/home/stephen/rpi/rasp-pi-
rootfs/usr/lib CMakeFiles/foo.dir/main.cpp.o -lstdc++ -lm -lgcc_s -lgcc -lc
-lgcc_s -lgcc /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-linux-
gnueabihf/4.6/crtend.o /home/stephen/rpi/rasp-pi-rootfs/usr/lib/gcc/arm-
linux-gnueabihf/4.6/../../../arm-linux-gnueabihf/crtn.o 2>&1 | grep
libc.so.6
open("/home/stephen/dev/prefix/qtbase/kde/lib/libc.so.6", O_RDONLY|
O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/home/stephen/dev/prefix/qtbase/lib/libc.so.6", O_RDONLY|O_CLOEXEC) =
-1 ENOENT (No such file or directory)
open("/lib/i386-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
open("/home/stephen/rpi/rasp-pi-rootfs/lib/arm-linux-gnueabihf/libc.so.6",
O_RDONLY|O_LARGEFILE) = 14
open("/home/stephen/rpi/rasp-pi-rootfs/lib/arm-linux-gnueabihf/libc.so.6",
O_RDONLY|O_LARGEFILE) = 14
The debian ld seems to be ignoring the sysroot. I also notice that some
x86_64-linux-gnu triples appear in the stract output. This could be related
to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=708744
Any idea how I could further diagnose what's going wrong?
Thanks,
Steve.
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