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IDProjectCategoryView StatusDate SubmittedLast Update
0004977Spring engineLinuxpublic2015-09-30 10:202015-10-02 00:28
Reporterdpblnt 
Assigned Toabma 
PrioritynormalSeveritymajorReproducibilityalways
StatusresolvedResolutionno change required 
Product Version100.0 
Target VersionFixed in Version 
Summary0004977: # error "SSE2 instruction set not enabled"
Descriptiontrying to emerge spring from layman fails here
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/wmmintrin.h:31:0,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/x86intrin.h:58,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/x86_64-pc-linux-gnu/bits/opt_random.h:33,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/random:51,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/bits/stl_algo.h:65,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/algorithm:62,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/lib/assimp/code/AssimpPCH.h:115,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/lib/assimp/code/PostStepRegistry.cpp:49:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/emmintrin.h:31:3: error: #error "SSE2 instruction set not enabled"
 # error "SSE2 instruction set not enabled"
Steps To Reproduceemerge spring

or

cmake .
make spring
Additional Informationgcc version 4.8.5 (Gentoo 4.8.5 p1.3, pie-0.6.2)
dev-util/cmake-3.2.2

i noticed during configure this:
C -march=core-avx-i -mno-f16c -mno-fsgsbase -mno-rdrnd -O2 -pipe
C++ -march=core-avx-i -mno-f16c -mno-fsgsbase -mno-rdrnd -O2 -pipe -std=gnu++11 -march=core-avx-i -msse -mfpmath=sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4 -mno-sse4a -mno-avx -mno-fma -mno-fma4 -mno-xop -mno-lwp -mno-avx2 -fsingle-precision-constant -frounding-math -mieee-fp -pipe -fno-strict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -pthread


i thought that the -mno-sse2 is causing the above error
so i skipped gentoo's ebuild system and tried to configure by hand using

cmake -D CMAKE_CXX_FLAGS="-march=core-avx-i -mtune=core-avx-i -mno-f16c -mno-fsgsbase -mno-rdrnd -O2 -pipe" .

which resulted in

  Using custom CXX_FLAGS: -march=core-avx-i -mtune=core-avx-i -mno-f16c
  -mno-fsgsbase -mno-rdrnd -O2 -pipe this build will very likely not sync in
  online mode!

...

Compiler flags:
C
C++ -march=core-avx-i -mtune=core-avx-i -mno-f16c -mno-fsgsbase -mno-rdrnd -O2 -pipe -std=gnu++11 -mtune=generic -msse -mfpmath=sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4 -mno-sse4a -mno-avx -mno-fma -mno-fma4 -mno-xop -mno-lwp -mno-avx2 -fsingle-precision-constant -frounding-math -mieee-fp -pipe -fno-strict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -pthread


but building fails...

make spring
Scanning dependencies of target engineSim
[ 1%] Building CXX object rts/Sim/CMakeFiles/engineSim.dir/Features/Feature.cpp.o
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/wmmintrin.h:31:0,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/x86intrin.h:58,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/x86_64-pc-linux-gnu/bits/opt_random.h:33,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/random:51,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/bits/stl_algo.h:65,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/g++-v4/algorithm:62,
                 from /usr/include/boost/smart_ptr/shared_ptr.hpp:37,
                 from /usr/include/boost/shared_ptr.hpp:17,
                 from /usr/include/boost/date_time/time_clock.hpp:17,
                 from /usr/include/boost/thread/thread_time.hpp:9,
                 from /usr/include/boost/thread/lock_types.hpp:18,
                 from /usr/include/boost/thread/pthread/thread_data.hpp:12,
                 from /usr/include/boost/thread/thread_only.hpp:17,
                 from /usr/include/boost/thread/thread.hpp:12,
                 from /usr/include/boost/thread.hpp:13,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/System/Platform/Linux/ThreadSupport.h:12,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/System/Platform/Threading.h:9,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/System/Object.h:10,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/Sim/Objects/WorldObject.h:6,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/Sim/Objects/SolidObject.h:6,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/Sim/Features/Feature.h:11,
                 from /dev/shm/portage/games-strategy/spring-100.0/work/spring_100.0/rts/Sim/Features/Feature.cpp:4:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.5/include/emmintrin.h:31:3: error: #error "SSE2 instruction set not enabled"
 # error "SSE2 instruction set not enabled"
   ^


Why is -mno-sse2 always attached to the compiler options?
Is that the source of my compilation failure?
TagsNo tags attached.
Checked infolog.txt for Errors
Attached Files

-Relationships
+Relationships

-Notes

~0015256

jK (developer)

2015-09-30 12:12

 stop applying custom compiler args ...
also the ebuild gives you a warning ...

~0015257

dpblnt (reporter)

2015-09-30 13:04

 Trying with custom cflags was my last resort.
It did not build in the first place.
Since that I upgraded gcc to 5.2.0 which builds fine without any tweaks.

~0015258

hokomoko (developer)

2015-10-01 13:56

 it happened to me without custom args as well.
Managed to solve it by changing compiler, which may be an issue.

abma?

~0015259

abma (administrator)

2015-10-01 16:31

 https://github.com/spring/spring/blob/develop/rts/build/cmake/TestCXXFlags.cmake#L64


very likely completely cleaning the build dir will fix the compile error. you should do that every time you change compile flags as cmake caches settings. try this first, if this doesn't help, you very likely hit a bug in gcc headers.

~0015260

abma (administrator)

2015-10-01 16:55

 some guy reported a similar issue:

https://springrts.com/phpbb/viewtopic.php?t=26582#p496966

note: the post is from 2011

~0015261

abma (administrator)

2015-10-01 23:44

 upstream bug report:

https://bugs.gentoo.org/show_bug.cgi?id=528906

~0015262

abma (administrator)

2015-10-01 23:47

 @dpblnt: does this compile for you?

cat sse2.cpp
#include <algorithm>

int main()
{
        return 1;
}

g++ -march=native -std=gnu++11 -mno-sse2 -o sse2.o -c sse2.cpp

~0015265

abma (administrator)

2015-10-02 00:28

 seems to be a g++ 4.8 bug.

compiles:
  g++-4.8 -march=x86-64 std=gnu++11 -mno-sse2 -o sse2.o -c sse2.cpp

doesn't compile:
  g++-4.8 -march=x86-64 -maes std=gnu++11 -mno-sse2 -o sse2.o -c sse2.cpp

doesn't compile:
  g++-4.8 -march=core-avx-i -mno-aes -std=gnu++11 -mno-sse2 -o sse2.o -c sse2.cpp

-mno-aes seems to have no effect for core-avx-i.

so either compile with march=x86-64 or don't use g++ 4.8. with a custom march set you very likely will get desyncs (!!!), don't do that when playing online!
+Notes

-Issue History
Date Modified Username Field Change
2015-09-30 10:20 dpblnt New Issue
2015-09-30 12:12 jK Note Added: 0015256
2015-09-30 13:04 dpblnt Note Added: 0015257
2015-10-01 13:56 hokomoko Note Added: 0015258
2015-10-01 16:31 abma Note Added: 0015259
2015-10-01 16:55 abma Note Added: 0015260
2015-10-01 23:44 abma Note Added: 0015261
2015-10-01 23:47 abma Note Added: 0015262
2015-10-01 23:55 abma Status new => feedback
2015-10-02 00:28 abma Note Added: 0015265
2015-10-02 00:28 abma Status feedback => resolved
2015-10-02 00:28 abma Resolution open => no change required
2015-10-02 00:28 abma Assigned To => abma
+Issue History