gnu: Add sextractor.

* gnu/packages/astronomy.scm (sextractor): New variable.

Signed-off-by: Guillaume Le Vaillant <glv@posteo.net>

gnu/packages/astronomy.scm

@@ -158,6 +158,52 @@ header.")
 programs for the manipulation and analysis of astronomical data.")
     (license license:gpl3+)))
 
+(define-public sextractor
+  (package
+    (name "sextractor")
+    (version "2.25.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/astromatic/sextractor")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0q69n3nyal57h3ik2xirwzrxzljrwy9ivwraxzv9566vi3n4z5mw"))))
+    (build-system gnu-build-system)
+    ;; NOTE: (Sharlatan-20210124T103117+0000): Building with `atlas' is failing
+    ;; due to missing shared library which required on configure phase. Switch
+    ;; build to use `openblas' instead. It requires FFTW with single precision
+    ;; `fftwf'.
+    (arguments
+     `(#:configure-flags
+       (list
+        "--enable-openblas"
+        (string-append
+         "--with-openblas-libdir=" (assoc-ref %build-inputs "openblas") "/lib")
+        (string-append
+         "--with-openblas-incdir=" (assoc-ref %build-inputs "openblas") "/include")
+        (string-append
+         "--with-fftw-libdir=" (assoc-ref %build-inputs "fftw") "/lib")
+        (string-append
+         "--with-fftw-incdir=" (assoc-ref %build-inputs "fftw") "/include"))))
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("libtool" ,libtool)))
+    (inputs
+     `(("openblas" ,openblas)
+       ("fftw" ,fftwf)))
+    (home-page "http://www.astromatic.net/software/sextractor")
+    (synopsis "Extract catalogs of sources from astronomical images")
+    (description
+     "SExtractor is a program that builds a catalogue of objects from an
+astronomical image.  Although it is particularly oriented towards reduction of
+large scale galaxy-survey data, it can perform reasonably well on moderately
+crowded star fields.")
+    (license license:gpl3+)))
+
 (define-public stellarium
   (package
     (name "stellarium")