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de11fb92cf
configuration:
MACHINE ??= "qemux86-64"
require conf/multilib.conf
MULTILIBS ?= "multilib:lib32"
DEFAULTTUNE_virtclass-multilib-lib32 ?= "core2-32"
IMAGE_INSTALL_append = " packagegroup-core-buildessential lib32-libstdc++ lib32-libstdc++-dev"
m32 compile failed on target:
cmd: gcc -m32 -v test.cpp -o test
output:
GGC heuristics: --param ggc-min-expand=45 --param ggc-min-heapsize=29590
ignoring nonexistent directory "/usr/lib64/gcc/x86_64-poky-linux/10.1.0/../../../../include/c++/10.1.0/x86_64-poky-linux/32"
ignoring nonexistent directory "/usr/lib64/x86_64-poky-linux/10.1.0/include"
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/lib64/gcc/x86_64-poky-linux/10.1.0/../../../../x86_64-poky-linux/include"
/usr/lib64/gcc/x86_64-poky-linux/10.1.0/../../../../include/c++/10.1.0
/usr/lib64/gcc/x86_64-poky-linux/10.1.0/../../../../include/c++/10.1.0/backward
/usr/lib64/gcc/x86_64-poky-linux/10.1.0/include
/usr/lib64/gcc/x86_64-poky-linux/10.1.0/include-fixed
/usr/include
End of search list.
GNU C++14 (GCC) version 10.1.0 (x86_64-poky-linux)
compiled by GNU C version 10.1.0, GMP version 6.2.0, MPFR version 4.1.0, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=45 --param ggc-min-heapsize=29590
Compiler executable checksum: bc3b2f3a33dad80e30112cf1235bf631
In file included from test.cpp:1:
/usr/include/c++/10.1.0/iostream:38:10: fatal error: bits/c++config.h: No such file or directory
38 | #include <bits/c++config.h>
| ^~~~~~~~~~~~~~~~~~
cannot find header since
/usr/lib64/gcc/x86_64-poky-linux/10.1.0/x86_64-poky-linux/32 is missing
fixed by link it to ../i686-poky-linux
(From OE-Core rev: 509022ea8db314dd9d010a478fd84d0234905c6b)
Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.