Undefined References to rand_r while installing

[ghost]

Hi,
I am trying to install pylearn2 in windows (Anaconda community edition precisely). The installation breaks while running setup.py develop stating reason as undefined references to rand_r . Is this a known issue with windows/Anaconda or some bug ?
Here is the stacktrace :
C:\mywares\Anaconda\MinGW\bin\gcc.exe -DMS_WIN64 -shared -s build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.def -LC:\mywares\Anaconda\libs -LC:\mywares\Anaconda\PCbuild\amd64 -lpython27 -lmsvcr90 -o C:\Users\sony\Downloads\pylearn2-master\pylearn2-master\pylearn2\utils_window_flip.pyd
build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x598a): undefined reference to rand_r' build\temp.win-amd64-2.7\Release\pylearn2\utils\_window_flip.o:_window_flip.c:(. text+0x59ae): undefined reference torand_r'
build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x59d4): undefined reference to rand_r' build\temp.win-amd64-2.7\Release\pylearn2\utils\_window_flip.o:_window_flip.c:(. text+0x77a7): undefined reference torand_r'
build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x77d4): undefined reference to rand_r' build\temp.win-amd64-2.7\Release\pylearn2\utils\_window_flip.o:_window_flip.c:(. text+0x77fc): more undefined references torand_r' follow
collect2.exe: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1

[dwf]

Looks like rand_r isn't supported on Windows, because Microsoft views
standards as gentle suggestions.
On May 19, 2014 12:51 AM, "muktabhmayank" [email protected] wrote:

Hi,
I am trying to install pylearn2 in windows (Anaconda community edition
precisely). The installation breaks while running setup.py develop stating
reason as undefined references to rand_r . Is this a known issue with
windows/Anaconda or some bug ?
Here is the stacktrace :
C:\mywares\Anaconda\MinGW\bin\gcc.exe -DMS_WIN64 -shared -s
build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o
build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.def
-LC:\mywares\Anaconda\libs -LC:\mywares\Anaconda\PCbuild\amd64 -lpython27
-lmsvcr90 -o
C:\Users\sony\Downloads\pylearn2-master\pylearn2-master\pylearn2\utils_window_flip.pyd

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x598a): undefined reference to rand_r'

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x59ae): undefined reference torand_r'

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x59d4): undefined reference to rand_r'

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x77a7): undefined reference torand_r'

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x77d4): undefined reference to rand_r'

build\temp.win-amd64-2.7\Release\pylearn2\utils_window_flip.o:_window_flip.c:(.
text+0x77fc): more undefined references torand_r' follow
collect2.exe: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/914
.

[lamblin]

If someone is willing to implement one of the solutions in http://stackoverflow.com/questions/18454814/rand-r-not-in-scope-gcc-mingw-under-cygwin-on-windows for instance, please submit a PR or re-open this ticket.

[nouiz]

This was done at the top of this file:

pylearn2/utils/_window_flip.pyx

On Wed, Aug 27, 2014 at 2:42 PM, Pascal Lamblin [email protected]
wrote:

Closed #914 #914.

—
Reply to this email directly or view it on GitHub
#914 (comment).

[dwf]

If I recall correctly it now builds on Windows, and uses rand(). So,
Windows users get something that works but isn't deterministic, and are
warned of this fact.

[nouiz]

You are correct. I check the code before doing my comment and this is what
happen.

On Wed, Aug 27, 2014 at 2:46 PM, David Warde-Farley <
[email protected]> wrote:

If I recall correctly it now builds on Windows, and uses rand(). So,
Windows users get something that works but isn't deterministic, and are
warned of this fact.

—
Reply to this email directly or view it on GitHub
#914 (comment).

[lamblin]

OK, great!

[icoxfog417]

On Python3, we need to add 'u'.

• Fail(cause rand_r is missing error).

IF UNAME_SYSNAME == "Windows":

• Success

IF UNAME_SYSNAME == u"Windows":

see also Python 3.3 + Cython 20.1 build failure and Pull #949

[eyaler]

I just ran in to this issue with python 3 and needed to apply the fix in the above comment. should we open a new issue for this?

[lamblin]

Yes, a new issue would be a good idea.
Or, if that solution also works on Python 2.6, then a pull request implementing that would be even better :)