Re: [PULL 00/14] (Mostly) build system changes for 2022-06-24

[Richard Henderson]

On 6/24/22 01:27, Paolo Bonzini wrote:
> The following changes since commit 2b049d2c8dc01de750410f8f1a4eac498c04c723:
>
>    Merge tag 'pull-aspeed-20220622' of https://github.com/legoater/qemu into 
> staging (2022-06-22 07:27:06 -0700)
>
> are available in the Git repository at:
>
>    https://gitlab.com/bonzini/qemu.git tags/for-upstream
>
> for you to fetch changes up to 72da35fec9a9ba91a5b2cb9ee00843a94fa9413d:
>
>    accel: kvm: Fix memory leak in find_stats_descriptors (2022-06-24 10:19:17 
> +0200)
>
> ----------------------------------------------------------------
> * fuzzing fixes
> * fix cross compilation CFLAGS and compiler choice
> * do not specify -bios option for tests/vm
> * miscellaneous fixes

Build failure here.  I have ubuntu 22.04,

crossbuild-essential-arm64/jammy,jammy,now 12.9ubuntu3 all [installed]

crossbuild-essential-armhf/jammy,jammy,now 12.9ubuntu3 all [installed]

crossbuild-essential-i386/jammy,jammy,now 12.9ubuntu3 all [installed]

crossbuild-essential-mips64el/jammy,jammy,now 12.9 all [installed]

crossbuild-essential-ppc64el/jammy,jammy,now 12.9ubuntu3 all [installed]

crossbuild-essential-riscv64/jammy,jammy,now 12.9ubuntu3 all [installed]

crossbuild-essential-s390x/jammy,jammy,now 12.9ubuntu3 all [installed]


which is properly detected during configure,

  Cross compilers

    aarch64                      : aarch64-linux-gnu-gcc

    alpha                        : $(DOCKER_SCRIPT) cc --cc alpha-linux-gnu-gcc -i 
qemu/debian-alpha-cross -s /home/rth/qemu-publish/src --

    arm                          : arm-linux-gnueabihf-gcc

    i386                         : i686-linux-gnu-gcc

    nios2                        : $(DOCKER_SCRIPT) cc --cc nios2-linux-gnu-gcc -i 
qemu/debian-nios2-cross -s /home/rth/qemu-publish/src --

    x86_64                       : cc

...


But then the i386 cross-compiler isn't used:

$ cat tests/tcg/config-i386-softmmu.mak

# Automatically generated by configure - do not modify

TARGET_NAME=i386

BUILD_STATIC=

EXTRA_CFLAGS=-m32

CC=cc

CCAS=cc

AR=ar

AS=as

LD=ld

NM=nm

OBJCOPY=objcopy

RANLIB=ranlib

STRIP=strip

QEMU=/home/rth/qemu-publish/bld/qemu-system-i386


leading to failure:

cc -nostdlib -ggdb -O0 -isystem /home/rth/qemu-publish/src/tests/tcg/minilib -m32 
-ffreestanding /home/rth/qemu-publish/src/tests/tcg/multiarch/system/hello.c -o hello 
-Wl,-T/home/rth/qemu-publish/src/tests/tcg/i386/system/kernel.ld -Wl,-melf_i386 -static 
-nostdlib boot.o  printf.o -lgcc

/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/11/libgcc.a when 
searching for -lgcc

/usr/bin/ld: cannot find -lgcc: No such file or directory

collect2: error: ld returned 1 exit status

make[1]: *** [/home/rth/qemu-publish/src/tests/tcg/i386/Makefile.softmmu-target:32: hello] 
Error 1



r~