Installation fixes

[beckrob]

Dear Authors,

Thank you for sharing this package. In trying to install it, I came upon three small issues that could be fixed easily in the documentation/makefile and thus help others have a smoother installation process.

First, it would be helpful if it was specified that FFTW should also be installed with the --enable-shared configuration option. Otherwise there are problems when linking (message: relocation ... can not be used when making a shared object; recompile with -fPIC).

Second, it could also be specified that HEALPix should be installed with the shared C libraries, too (by default only a static library is linked).

Third, there were two typos in the Makefile generated by the configure script. Here are the lines:
libnmt_la_LDFLAGS = $(OPENP_CFLAGS) -lfftw3 -lfftw3_omp -lgsl -lgslcblas -lcfitsio -lsharp -lfftpack -lc_utils -lm
test_check_nmt_LDFLAGS = $(OPENP_CFLAGS) -L./ -lnmt -lfftw3 -lfftw3_omp -lgsl -lgslcblas -lcfitsio -lsharp -lfftpack -lc_utils -lm

OPENP_CFLAGS should actually read OPENMP_CFLAGS. Without -fopenmp the linking fails at the end.

I hope this helps.

Sincerely,
Robert Beck

[damonge]

Hi @beckrob . Thanks a lot for bringing these up! I'm quite surprised that the OPENP stuff has been passing the travis tests all these time!

I've addressed these in PR #43 , which has been merged into master now.