tmp files not being created/found

[zz-james]

I just installed emscripten (and dependencies)

I can get some tests to compile, but not
./emcc tests/hello_world_sdl.cpp -o hello.html

My debug trace is long but I think the problems comes in the last few lines:

clang: warning: argument unused during compilation: '-nostdinc++'
DEBUG    root: [35moptimizing /emscripten/system/lib/libc/stdlib/strtod.c with -O3[0m
DEBUG    root: [35memcc: LLVM opts: ['-O3'][0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/dlmalloc.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/dlmalloc.c.o'[0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/err.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/err.c.o'[0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/errx.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/errx.c.o'[0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/warn.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/warn.c.o'[0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/warnx.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/warnx.c.o'[0m
DEBUG    root: [35mBuilding.is_ar failed to test whether file '/tmp/tmpT5WCgH/dlmalloc.c.o' is a llvm archive file! Failed on exception: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/dlmalloc.c.o'[0m
Traceback (most recent call last):
  File "./emcc", line 1409, in <module>
libfile = shared.Cache.get(name, create)
  File "/emscripten/tools/cache.py", line 37, in get
shutil.copyfile(creator(), cachename)
  File "./emcc", line 1220, in create_libc
return build_libc('libc.bc', libc_files)
  File "./emcc", line 1190, in build_libc
shared.Building.link(o_s, in_temp(lib_filename))
  File "/emscripten/tools/shared.py", line 882, in link
if Building.is_bitcode(f):
  File "/emscripten/tools/shared.py", line 1263, in is_bitcode
b = open(filename, 'r').read(4)
IOError: [Errno 2] No such file or directory: '/tmp/tmpT5WCgH/dlmalloc.c.o'

Anyone have any hints/tips on where I go from here?

Thanks

James

[kripken]

Try emcc --clear-cache and running that again.

[zz-james]

that didn't work. I tried another test compilation: ./emcc -O2 tests/hello_world.cpp

and the debug trace contained the line:

x86_mmx %62 = call x86_mmx @llvm.x86.3dnow.pfsubr(i8* %61, x86_mmx (x86_mmx, x86_mmx)* @llvm.x86.3dnow.pfsubr)
Broken module found, compilation aborted!

does this mean I don't have the right hardware (mmx on the processor??)

[kripken]

What LLVM version are you using? Is it a custom build? Looks like it is doing something very different than the LLVM we expect (3.2, unmodified).

[zz-james]

Aha! I think that might be the problem, I think maybe this is 'not unmodified' thanks will hunt down an unmodified version.

james@james-AO533:/usr/lib/llvm-3.2/bin$ ./llvm-nm --version
LLVM (http://llvm.org/):
LLVM version 3.2
Ubuntu 3.2-2ubuntu5~precise1
Optimized build.
Built May 28 2013 (06:32:46).
Default target: i386-pc-linux-gnu
Host CPU: atom

[zz-james]

everything is working now thanks. advice for fellow travellers, follow the instructions on
https://earthserver.com/Setting_up_emscripten_development_environment_on_Linux
carefully, in my setup (ubuntu 12.10) using apt to install llvm and clang just never worked no matter what combination or repository I hit so always download source and compile (even if it takes an age) also my netbook ran out of memory compiling so I reran make without the -j 8 option and it completed ok

[kripken]

Perhaps we should link to that guide more prominently (it's already linked to in the tutorial I think).

[zz-james]

The guide is quite prominently linked, I'm afraid I think the problem is
the usual one of different linux versions with different repositories, and
'interfaces' between components changing - my laptop is getting old now so
to download source and compile takes a long time, and if it fails (it did a
couple of times) the machine can be out of action for a whole day, so I
tried to install binaries using apt-get but (here's where gaps in my
knowledge show up) I needed to add repositories to get LLVM 3.2 - by adding
repositories I ended up with less stable versions, that didn't seem to
behave well, also installing Clang would either install LLVM3.0 or act
strangely with LLVM3.2 - which again is about matching what versions expect
what, by default it also installs clang to it's own directory, and
emscripten seemed to think clang should be within the LLVM directory, again
not sure if it is gaps in my knowledge but there's not a line in the
default ~/.emscripten config file to specify an alternative path to clang.

obviously emscripten is not for newbie's - I think it was more difficult
than I thought it would be, but obviously since I've now got it running so
it's not impossible - I don't know how possible or difficult it would be to
get to the point where I can type

sudo apt-get install emscripten

but I think that would make a big difference!!!

thanks for your help I know you must have a lot of work on.

James

p.s. sorry if this reopens the issue in the forum that happens all the time
to me at work :-)

On Wed, Jul 31, 2013 at 10:32 PM, Alon Zakai notifications@github.comwrote:

Perhaps we should link to that guide more prominently (it's already linked
to in the tutorial I think).

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Reply to this email directly or view it on GitHubhttps://github.com//issues/1432#issuecomment-21897512
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