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Re: libgsl awkwardness


From: Dr . Jürgen Sauermann
Subject: Re: libgsl awkwardness
Date: Mon, 6 Jan 2025 13:37:35 +0100
User-agent: Mozilla Thunderbird

Hi Henrik,

I believe the proper way to handle this is to use the VERSION argument in the ax_path_lib_gsl.m4 script.

Unfortunately your modified m4 script seems not to handle versions, and the original script

https://www.gnu.org/software/autoconf-archive/ax_path_lib_gsl.html

gives me a 404 Not Found error on the web. Where did you find it?

Best Regards,
Jürgen


On 12/30/24 17:50, Henrik Moller wrote:
Building 1808, I got a few errors like:
/usr/bin/ld: apl-QR_factorization_GSL.o: in function `GSL::QR_factorize_ZZ_matrix(Value&, int, int, Cell const*)':
QR_factorization_GSL.cc:(.text+0x97b): undefined reference to `gsl_linalg_complex_QR_decomp_r'
Turned out that ./configure was picking up an older version of libgsl (probably in /usr/lib64 from my original installation rather than my update in /usr/local/lib).  Almost certainly my own fault for being careless with updates, but, if anyone else has the same problem, it's easily fixed with:
./configure --with-gsl=/usr/local/lib
or wherever you keep your updates.


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