error cross compiling linux X64 => 32 bit i686

techy2 commented at 10:58 pm on June 24, 2024: none

Is there an existing issue for this?

I have searched the existing issues

Current behaviour

While building depends for make HOST=i686-pc-linux-gnu -j8

issues this warning
configure: WARNING: using cross tools not prefixed with host triplet …. then fails ….. configure: error: in `/master/gitrepo/bitcoin/depends/work/build/i686-pc-linux-gnu/libevent2.1.12-stable-f9904577bfb’: configure: error: C compiler cannot create executables

Expected behaviour

clean build

Steps to reproduce

git clone https://github.com/bitcoin/bitcoin cd bitcoin checkout v27.1 cd depends make

Relevant log output

config.log

however, config.log says this, see attached configure:3745: $? = 0 configure:3734: gcc -m32 -v >&5 Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/10/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa:hsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v –with-pkgversion=‘Ubuntu 10.3.0-1ubuntu118.041’ –with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs –enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 –prefix=/usr –with-gcc-major-version-only –program-suffix=-10 –program-prefix=x86_64-linux-gnu- –enable-shared –enable-linker-build-id –libexecdir=/usr/lib –without-included-gettext –enable-threads=posix –libdir=/usr/lib –enable-nls –enable-clocale=gnu –enable-libstdcxx-debug –enable-libstdcxx-time=yes –with-default-libstdcxx-abi=new –enable-gnu-unique-object –disable-vtable-verify –enable-plugin –enable-default-pie –with-system-zlib –enable-libphobos-checking=release –with-target-system-zlib=auto –enable-objc-gc=auto –enable-multiarch –disable-werror –with-arch-32=i686 –with-abi=m64 –with-multilib-list=m32,m64,mx32 –enable-multilib –with-tune=generic –enable-offload-targets=nvptx-none=/build/gcc-10-xgJY7J/gcc-10-10.3.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-10-xgJY7J/gcc-10-10.3.0/debian/tmp-gcn/usr,hsa –without-cuda-driver –enable-checking=release –build=x86_64-linux-gnu –host=x86_64-linux-gnu –target=x86_64-linux-gnu

Note last line, all say x86_64-linux-gnu script seems to be missing the appropriate i686-pc-linux-gnu

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

v27.1

Operating system and version

ubuntu 18.04

Machine specifications

HP Proliant with 2x Xeon X5690 - 12 cores, 24 virtual cores 192 gigs memory 2T disk autoconf 2.69 automake 1.16.1 gcc (Ubuntu 10.3.0-1ubuntu1~~18.04~~1) 10.3.0 python3 3.6.9

hebasto commented at 8:21 am on June 25, 2024: member

Is g++-multilib package installed?

Also see https://github.com/bitcoin/bitcoin/blob/27.x/depends/README.md

maflcko commented at 8:43 am on June 25, 2024: member

The error is:

 0configure:3787: gcc -m32 -pipe -std=c11 -O2       -I/master/gitrepo/bitcoin/depends/i686-pc-linux-gnu/include -D_FORTIFY_SOURCE=3       -L/master/gitrepo/bitcoin/depends/i686-pc-linux-gnu/lib     conftest.c  >&5
 1<command-line>: warning: "_FORTIFY_SOURCE" redefined
 2<built-in>: note: this is the location of the previous definition
 3/usr/bin/ld: cannot find Scrt1.o: No such file or directory
 4/usr/bin/ld: cannot find crti.o: No such file or directory
 5/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/10/libgcc.a when searching for -lgcc
 6/usr/bin/ld: cannot find -lgcc
 7/usr/bin/ld: cannot find libgcc_s.so.1
 8/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/10/libgcc.a when searching for -lgcc
 9/usr/bin/ld: cannot find -lgcc
10collect2: error: ld returned 1 exit status
11configure:3791: $? = 1
12configure:3829: result: no
13configure: failed program was:

So the problem seems to be that a package is missing, see the previous reply. Alternatively, you can also use a search engine, like https://duckduckgo.com/?q=%2Fusr%2Fbin%2Fld%3A+cannot+find+-lgcc

Generally, it is easier to just upgrade your system from Ubuntu Bionic to a later LTS, than to fully and correctly install or compile a cross-compiler from scratch. Also, Bionic has reached end of standard support on 31 May 2023 (more than a year ago), so doing an upgrade may be beneficial anyway and may be required at some point anyway.

maflcko added the label Build system on Jun 25, 2024

maflcko added the label Questions and Help on Jun 25, 2024

maflcko commented at 8:34 am on June 27, 2024: member

Closing for now, because this is not a Bitcoin Core issue, and solutions have been provided anyway.

maflcko closed this on Jun 27, 2024

error cross compiling linux X64 => 32 bit i686 #30330