[Bug libgcc/110017] Crossback Compilation for multilib fails on latest ubuntu due to -mx32 being disabled by the linux kernel
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110017 --- Comment #4 from cqwrteur --- Created attachment 55182 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55182=edit Here is the build script (need to install a x86_64-w64-mingw32 cross compiler first)
[Bug libgcc/110017] Crossback Compilation for multilib fails on latest ubuntu due to -mx32 being disabled by the linux kernel
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110017 --- Comment #3 from cqwrteur --- (In reply to Andrew Pinski from comment #2) > How are you configuring GCC? gcc/configure --disable-nls --disable-werror --enable-languages=c,c++ --enable-multilib --with-multilib-list=m64,m32,mx32 --with-gxx-libcxx-include-dir=$PREFIXTARGET/include/c++/v1 --prefix=$PREFIX --build=x86_64-pc-linux-gnu --host=x86_64-w64-mingw32 --target=x86_64-pc-linux-gnu --disable-bootstrap --disable-libstdcxx-verbose --with-libstdcxx-eh-pool-obj-count=0 --enable-libstdcxx-backtrace
[Bug libgcc/110017] Crossback Compilation for multilib fails on latest ubuntu due to -mx32 being disabled by the linux kernel
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110017 Andrew Pinski changed: What|Removed |Added Ever confirmed|0 |1 Last reconfirmed||2023-05-28 Version|14.0|unknown Status|UNCONFIRMED |WAITING --- Comment #2 from Andrew Pinski --- How are you configuring GCC?
[Bug libgcc/110017] Crossback Compilation for multilib fails on latest ubuntu due to -mx32 being disabled by the linux kernel
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110017 --- Comment #1 from cqwrteur --- (In reply to cqwrteur from comment #0) > I attempted crossback compilation for GCC, where the compiler is built on > Linux, runs on Windows, and is targeted for Linux again. However, the build > system of libgcc includes a sanity test to detect the functionality of the > compiler, which prevents the build for the -mx32 option and disables m32. > > Moreover, during crossback compilation, GCC specifically looks for the "cc" > command instead of just "gcc," even in cases where it doesn't exist. > > Is there a way to remove or bypass the sanity test restriction for crossback > compilation in this scenario? Not the functionality. It detects whether -mx32 program could run but of course it cannot because linux kernel disabled that.
