#70 Complie Error at sharp.c with v3.30 (2015Oct08)

[Anonymous]

Hi guys

Is about: Healpix_3.30_2015Oct08.tar.gz

I get a strange error when compliling.I tried either with ./configure and make
or via "pip install --user healpy". Same result.
See attachment.
- Error_pip_install.txt
- Error_Make.txt

I guess it has something to do with my c complier:
gcc version 4.8.3 20140627 [gcc-4_8-branch revision 212064] (SUSE Linux)
I am out of options. Maybe it's something trival.
I use the the flags as recommended by the program.

What other information you need to understand the issue?

Thanks for any advice.

Cheers
Alex

[Martin Reinecke]

Hi Alex,

I have no idea why, but for some reason the configuration of the C compiler (during the healpy step) does not include the "-std=c99" flag. If you find a way to add this flag, things should work nicely.

For debugging purposes, could you please attach the files
/home/a/Healpix_3.30/src/healpy/healpixsubmodule/src/cxx/autotools/configure
and
/home/a/Healpix_3.30/src/healpy/healpixsubmodule/src/cxx/autotools/configure.ac
?

Cheers,
Martin

[Martin Reinecke]

Hi Alex!

I'm sorry but I can not edit my own ticket. Not sure how that works.

This is strange. I'll see if I can change the configuration for the bug
tracker!

I created the ticket while I wasn't log-in into sourceforge.

I downloaded this file "Healpix_3.30_2015Oct08.tar.gz"
So, the files should also be in there.
- Healpix_3.30/src/healpy/healpixsubmodule/src/cxx/autotools/configure
- /Healpix_3.30/src/healpy/healpixsubmodule/src/cxx/autotools/configure.ac

If you give me an email-adress, I can send you my files but I don't expect them to be different.

I just double-checked the files, and at least configure.ac looks exactly
as it should.
I ran the configure script by hand with gcc 4.7.3 (unfortunately I don't
have your exact version here) and it correctly found the necessary flag
for C99 code.
Looking at your Error_Make.txt, I see the line

checking for gcc -pthread option to accept ISO C99... unsupported

I don't understand why this happens, because on my own machine I get

checking for gcc -pthread option to accept ISO C99... -std=gnu99

but in any case this problem explains all the following compilation
errors you see.
I don't know how to fix this, since I'm only writing C/C++ and I'm not
familiar with the Python configuration voodoo that does the healpy setup.
But if you manage to somehow feed the "-std=c99" or "-std=gnu99" flag to
the C compiler, everything should work.

Hope this helps a bit,
Martin

[Martin Reinecke]

P.S.: posting comments to existing tickets should now work for everyone. Sorry for the misconfiguration!

[alex]

Thanks for the Idea. I tried the following:

For ./configure "(3): configure Healpix F90 package, and edit Makefile"
> enter compilation/optimisation flags for C compiler (-O3 -std=c99 -DgFortran): -O3 -std=gnu99 -DgFortran
> C subroutines will be compiled with gcc -O3 -std=gnu99 -DgFortran

Changed "std=c99" to "std=gnu99" by hand in the files:
- .../src/cxx/config/config.healpy
- .../src/cxx/config/config.generic_gcc
-> pick in ./configure for configurations for C++: "2: generic_gcc"

Still same error:
"checking for gcc -pthread option to accept ISO C99... unsupported"

Somewhere it still misses the "std=c99" or "std=gnu99" flag or it nether likes "std=gnu99".

It looks to me like it's a bug in one script or one configure file but not necessarly of my C compiler,.

Any other way to rule out that is my C compiler?

Any other file I should check for the C99 Flag or add it there?

Just a random thought:
could cfitsio has anything to do with this?
could my python version has anything to with this?

Cheers
Alex

[Martin Reinecke]

Hi Alex,

cfitsio should definitely not be related to this problem; and I'm pretty sure it will not depend on the Python version either.
The config.generic_gcc and similar files are ignored during the healpy build process, so it's not that either.
Your best bet is probably to open a new issue at https://github.com/healpy/healpy
The people there are much more knowledgeable about this kind of problem.

Cheers,
Martin

[alex]

Thanks. I will.

[Martin Reinecke]

Closing ... discussion appear to have moved over to healpy.