0001846: build on non x86 architectures impossible

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0001846

Spring engine

Linux

public

2010-02-19 21:02

2017-05-08 23:24

Reporter

jandd

Assigned To

Kloot

Priority

normal

Severity

minor

Reproducibility

always

Status

resolved

Resolution

fixed

Product Version

0.81.1.3

Target Version

Fixed in Version

103.0 +git

Summary

0001846: build on non x86 architectures impossible

Description

The Debian project supports several architectures that are not x86 based (i.e. alpha, mips, powerpc). While I know that spring is mostly interesting to PC users it would be nice if non x86 architectures could be supported to. The x86 specific assembly code is located in rts/lib/streflop/FPUSettings.h.

The block already has a promising comment at the beginning:

   133 // plan for portability
   134 #if defined(_MSC_VER)
   135 #define STREFLOP_FSTCW(cw) do { short tmp; __asm { fstcw tmp }; (cw) = tmp; } while (0)
   136 #define STREFLOP_FLDCW(cw) do { short tmp = (cw); __asm { fclex }; __asm { fldcw tmp }; } while (0)
   137 #define STREFLOP_STMXCSR(cw) do { int tmp; __asm { stmxcsr tmp }; (cw) = tmp; } while (0)
   138 #define STREFLOP_LDMXCSR(cw) do { int tmp = (cw); __asm { ldmxcsr tmp }; } while (0)
   139 #else // defined(_MSC_VER)
   140 #define STREFLOP_FSTCW(cw) do { asm volatile ("fstcw %0" : "=m" (cw) : ); } while (0)
   141 #define STREFLOP_FLDCW(cw) do { asm volatile ("fclex \n fldcw %0" : : "m" (cw)); } while (0)
   142 #define STREFLOP_STMXCSR(cw) do { asm volatile ("stmxcsr %0" : "=m" (cw) : ); } while (0)
   143 #define STREFLOP_LDMXCSR(cw) do { asm volatile ("ldmxcsr %0" : : "m" (cw) ); } while (0)
   144 #endif // defined(_MSC_VER)

For now I asked the Debian buildd admins to mark the spring [1] and springlobby [2] packages as x86 only, but it would be nice to change this in the future.

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=570534
[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=570537

Additional Information

Build log for alpha architecture:

[ 2%] Building CXX object rts/lib/streflop/CMakeFiles/streflop.dir/streflopC.cpp.o
cd /build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/obj-alpha-linux-gnu/rts/lib/streflop && /usr/bin/c++ -DSYNCCHECK -DNO_AVI -DSPRING_DATADIR=\"/usr/share/games/spring:/usr/lib/spring:/usr/lib/spring\" -DSTREFLOP_SSE -g -O2 -fsingle-precision-constant -frounding-math -pipe -fno-strict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -pthread -O2 -DNDEBUG -g -I/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/rts/System -I/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/rts/lib/lua/include -I/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/rts/lib/streflop -I/usr/include/SDL -I/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/rts -I/usr/include/AL -I/usr/include/freetype2 -fpic -o CMakeFiles/streflop.dir/streflopC.cpp.o -c /build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/rts/lib/streflop/streflopC.cpp
{standard input}: Assembler messages:
{standard input}:34: Error: unknown opcode `fstcw'
{standard input}:50: Error: unknown opcode `fclex'
{standard input}:51: Error: unknown opcode `fldcw'
{standard input}:55: Error: unknown opcode `stmxcsr'
{standard input}:69: Error: unknown opcode `ldmxcsr'
{standard input}:98: Error: unknown opcode `fstcw'
{standard input}:116: Error: unknown opcode `fclex'
{standard input}:117: Error: unknown opcode `fldcw'
{standard input}:121: Error: unknown opcode `stmxcsr'
{standard input}:135: Error: unknown opcode `ldmxcsr'
make[4]: *** [rts/lib/streflop/CMakeFiles/streflop.dir/streflopC.cpp.o] Error 1
make[4]: Leaving directory `/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/obj-alpha-linux-gnu'
make[3]: *** [rts/lib/streflop/CMakeFiles/streflop.dir/all] Error 2
make[3]: Leaving directory `/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/obj-alpha-linux-gnu'
make[2]: *** [all] Error 2
dh_auto_build: make -j1 returned exit code 2
make[1]: *** [override_dh_auto_build] Error 2
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
make[2]: Leaving directory `/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2/obj-alpha-linux-gnu'
make[1]: Leaving directory `/build/buildd-spring_0.80.5.2-2-alpha-yij0rt/spring-0.80.5.2'

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Notes
~0004672 jandd (reporter) 2010-02-19 21:06	This is not a duplicate of http://springrts.com/mantis/view.php?id=1788 because it is not related to compiler flags.

~0004673 jandd (reporter) 2010-02-19 21:37	The corresponding Debian bug report is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=563686

~0004674 imbaczek (reporter) 2010-02-20 12:45	making spring cross-architecture isn't easy - the fact that it compiles doesn't make it work in multiplayer. there's also a problem of having access to hardware - afaik none of the developers don't have anything other than x86/amd64.

~0017575 Kloot (developer) 2017-05-08 23:24	this should be more or less possible now (ENABLE_STREFLOP=FALSE), at the cost of sacrificing sync.

Notes

Date Modified	Username	Field	Change
Issue History
2010-02-19 21:02	jandd	New Issue
2010-02-19 21:06	jandd	Note Added: 0004672
2010-02-19 21:37	jandd	Note Added: 0004673
2010-02-20 12:45	imbaczek	Note Added: 0004674
2010-02-20 12:46	imbaczek	Status	new => confirmed
2017-05-08 23:24	Kloot	Assigned To	=> Kloot
2017-05-08 23:24	Kloot	Status	confirmed => resolved
2017-05-08 23:24	Kloot	Resolution	open => fixed
2017-05-08 23:24	Kloot	Fixed in Version	=> 103.0 +git
2017-05-08 23:24	Kloot	Note Added: 0017575

Issue History