Bug#976576: spring: FTBFS: {standard input}:37: Error: unknown mnemonic `fstcw' -- `fstcw [sp, 18]'

[Lucas Nussbaum]

Source: spring
Version: 104.0+dfsg-7
Severity: serious
Justification: FTBFS on arm64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20201205 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on arm64 (I don't know if it also fails on amd64).

Relevant part (hopefully):
> cd /<<PKGBUILDDIR>>/obj-aarch64-linux-gnu/rts/lib/streflop && /usr/bin/c++ -DASIO_STANDALONE -DBOOST_NO_FENV_H -DSPRING_DATADIR=\"/usr/share/games/spring:/usr/lib/spring\" -DSTREFLOP_SSE -DSYNCCHECK -DTHREADPOOL -DUSE_LIBSQUISH -D_GLIBCXX_USE_NANOSLEEP -D_RANDOM_TCC -I/<<PKGBUILDDIR>>/rts -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2  -std=gnu++11 -fdiagnostics-color=auto -mtune=generic -DDEDICATED_NOSSE -fsingle-precision-constant -frounding-math  -pipe -fno-strict-aliasing  -fvisibility=hidden  -fvisibility-inlines-hidden -pthread  -O2      -Wformat -Wformat-security -DNDEBUG -g -fpic -o CMakeFiles/streflop.dir/streflopC.cpp.o -c /<<PKGBUILDDIR>>/rts/lib/streflop/streflopC.cpp
> {standard input}: Assembler messages:
> {standard input}:37: Error: unknown mnemonic `fstcw' -- `fstcw [sp,18]'
> {standard input}:49: Error: unknown mnemonic `fclex' -- `fclex '
> {standard input}:50: Error: unknown mnemonic `fldcw' -- `fldcw [sp,18]'
> {standard input}:56: Error: unknown mnemonic `stmxcsr' -- `stmxcsr [sp,20]'
> {standard input}:69: Error: unknown mnemonic `ldmxcsr' -- `ldmxcsr [sp,20]'
> {standard input}:124: Error: unknown mnemonic `fstcw' -- `fstcw [sp,18]'
> {standard input}:139: Error: unknown mnemonic `fclex' -- `fclex '
> {standard input}:140: Error: unknown mnemonic `fldcw' -- `fldcw [sp,18]'
> {standard input}:146: Error: unknown mnemonic `stmxcsr' -- `stmxcsr [sp,20]'
> {standard input}:159: Error: unknown mnemonic `ldmxcsr' -- `ldmxcsr [sp,20]'
> make[4]: *** [rts/lib/streflop/CMakeFiles/streflop.dir/build.make:111: rts/lib/streflop/CMakeFiles/streflop.dir/streflopC.cpp.o] Error 1

The full build log is available from:
   http://qa-logs.debian.net/2020/12/05/spring_104.0+dfsg-7_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

If you reassign this bug to another package, please marking it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with me
so that we can identify if something relevant changed in the meantime.

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.