gnu: Add WCSTools.

* gnu/packages/astronomy.scm (wcstools): New variable.
* gnu/packages/patches/wcstools-extend-makefiles.patch: New file.
* gnu/local.mk: Add it.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>

3 files changed, 392 insertions, 0 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index e397e1cb78..f20de7fa82 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -2107,6 +2107,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/wacomtablet-add-missing-includes.patch	\
   %D%/packages/patches/wacomtablet-qt5.15.patch			\
   %D%/packages/patches/warsow-qfusion-fix-bool-return-type.patch	\
+  %D%/packages/patches/wcstools-extend-makefiles.patch	\
   %D%/packages/patches/wdl-link-libs-and-fix-jnetlib.patch	\
   %D%/packages/patches/webkitgtk-adjust-bubblewrap-paths.patch	\
   %D%/packages/patches/webrtc-audio-processing-big-endian.patch	\
diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index f6b3e5202d..7c665cba4a 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -754,6 +754,39 @@ header.")
         (base32 "1m3bx6gh5w3c7vvsqcki0x20mg8lilg13m0i8nh7za89w58dxy4w"))))
     (properties '((hidden? . #t)))))
 
+(define-public wcstools
+  (package
+    (name "wcstools")
+    (version "3.9.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://tdc-www.harvard.edu/software/wcstools/wcstools-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "125hqzspvqrx6372smzsmxwg06ib2arjc5awnwnq53w1xdq6jpsj"))
+       (patches (search-patches "wcstools-extend-makefiles.patch"))))
+    (build-system gnu-build-system)
+    (arguments
+     (list
+      #:tests? #f ;No tests provided.
+      #:make-flags
+      #~(list (string-append "CC=" #$(cc-for-target))
+              (string-append "PREFIX=" #$output))
+      #:phases
+      #~(modify-phases %standard-phases
+          (delete 'configure))))
+    (home-page "http://tdc-www.harvard.edu/software/wcstools/")
+    (synopsis "Handle the WCS of a FITS image")
+    (description
+     "WCSTools is a set of software utilities, written in C, which create,
+display and manipulate the world coordinate system of a FITS or IRAF image,
+using specific keywords in the image header which relate pixel position within
+the image to position on the sky.  Auxillary programs search star catalogs and
+manipulate images.")
+    (license license:gpl2+)))
+
 (define-public weightwatcher
   (package
     (name "weightwatcher")
diff --git a/gnu/packages/patches/wcstools-extend-makefiles.patch b/gnu/packages/patches/wcstools-extend-makefiles.patch
new file mode 100644
index 0000000000..127bf0e670
--- /dev/null
+++ b/gnu/packages/patches/wcstools-extend-makefiles.patch
@@ -0,0 +1,358 @@
+From d702ed6d9da604e522625d08750636f680536743 Mon Sep 17 00:00:00 2001
+From: Sharlatan Hellseher <sharlatanus@gmail.com>
+Date: Mon, 11 Sep 2023 21:12:53 +0100
+Subject: [PATCH] wcstools: Extend makefiles.
+
+This patch was partly sourced from Debian Astro:
+- source: https://salsa.debian.org/debian-astro-team/wcstools/-/tree/master/
+  - file: debian/patches/Rename-libwcs-to-libwcstools-to-avoid-conflicts-with-Mark.patch
+  - commit: 91eb27654fa096d6adebb26dab8d94f5fc2fc721
+
+Additional changes applied:
+- do not rename library from libwcs to libwcstools
+- add 'install' target
+- add PREFIX and VERSION to ease packaging process
+---
+ Makefile        | 146 ++++++++++++++++++++++++++----------------------
+ libwcs/Makefile |  22 ++++++--
+ 2 files changed, 96 insertions(+), 72 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index cdc8a46..caadd97 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,12 +1,13 @@
+-CFLAGS= -g -D_FILE_OFFSET_BITS=64
+-CC= cc
++CC = cc
+ LIBWCS = libwcs/libwcs.a
+ LIBS = $(LIBWCS) -lm
+-#LIBS = $(LIBWCS) -lm -lnsl -lsocket
++
++PREFIX ?= /usr
+ BIN = bin
++
+ .PRECIOUS: ${LIBWCS} ${LIBNED}
+ .c.o:
+-	$(CC) -c $(CFLAGS) $(DEFS) $<
++	$(CC) -c $(CFLAGS) $(CPPFLAGS) $(DEFS) $<
+ 
+ all:	cphead delwcs delhead edhead fixpix gethead i2f imcat imhead immatch \
+ 	imrot imsize imstar imwcs scat sethead addpix getpix setpix sky2xy \
+@@ -16,196 +17,205 @@ all:	cphead delwcs delhead edhead fixpix gethead i2f imcat imhead immatch \
+ 	isfile simpos bincat
+ 
+ addpix: addpix.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/addpix addpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/addpix addpix.c $(LIBS)
+ 
+ bincat: bincat.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/bincat bincat.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/bincat bincat.c $(LIBS)
+ 
+ char2sp: char2sp.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/char2sp char2sp.c $(LIBWCS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/char2sp char2sp.c $(LIBWCS)
+ 
+ conpix: conpix.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/conpix conpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/conpix conpix.c $(LIBS)
+ 
+ cphead: cphead.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/cphead cphead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/cphead cphead.c $(LIBS)
+ 
+ crlf: crlf.c
+-	$(CC) $(CFLAGS) -o $(BIN)/crlf crlf.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/crlf crlf.c
+ 
+ delwcs: delwcs.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/delwcs delwcs.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/delwcs delwcs.c $(LIBS)
+ 
+ delhead: delhead.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/delhead delhead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/delhead delhead.c $(LIBS)
+ 
+ edhead: edhead.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/edhead edhead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/edhead edhead.c $(LIBS)
+ 
+ filename: filename.c
+-	$(CC) $(CFLAGS) -o $(BIN)/filename filename.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/filename filename.c
+ 
+ filedir: filedir.c
+-	$(CC) $(CFLAGS) -o $(BIN)/filedir filedir.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/filedir filedir.c
+ 
+ fileroot: fileroot.c
+-	$(CC) $(CFLAGS) -o $(BIN)/fileroot fileroot.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/fileroot fileroot.c
+ 
+ filext: filext.c
+-	$(CC) $(CFLAGS) -o $(BIN)/filext filext.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/filext filext.c
+ 
+ fixhead: fixhead.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/fixhead fixhead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/fixhead fixhead.c $(LIBS)
+ 
+ fixpix: fixpix.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/fixpix fixpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/fixpix fixpix.c $(LIBS)
+ 
+ getcol: getcol.c $(LIBWCS) libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/getcol getcol.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/getcol getcol.c $(LIBS)
+ 
+ getdate: getdate.c $(LIBWCS) libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/getdate getdate.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/getdate getdate.c $(LIBS)
+ 
+ gethead: gethead.c $(LIBWCS) libwcs/wcs.h libwcs/fitsfile.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/gethead gethead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/gethead gethead.c $(LIBS)
+ 
+ getfits: getfits.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/getfits getfits.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/getfits getfits.c $(LIBS)
+ 
+ getpix: getpix.c $(LIBWCS) libwcs/wcs.h libwcs/fitsfile.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/getpix getpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/getpix getpix.c $(LIBS)
+ 
+ gettab: gettab.c $(LIBWCS) libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/gettab gettab.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/gettab gettab.c $(LIBS)
+ 
+ httpget: httpget.c $(LIBWCS) libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/httpget httpget.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/httpget httpget.c $(LIBS)
+ 
+ htmlsp: htmlsp.c
+-	$(CC) $(CFLAGS) -o $(BIN)/htmlsp htmlsp.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/htmlsp htmlsp.c
+ 
+ i2f: i2f.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/i2f i2f.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/i2f i2f.c $(LIBS)
+ 
+ imcat: imcat.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imcat imcat.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imcat imcat.c $(LIBS)
+ 
+ imfill: imfill.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imfill imfill.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imfill imfill.c $(LIBS)
+ 
+ imresize: imresize.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imresize imresize.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imresize imresize.c $(LIBS)
+ 
+ imsmooth: imsmooth.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imsmooth imsmooth.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imsmooth imsmooth.c $(LIBS)
+ 
+ imhead: imhead.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imhead imhead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imhead imhead.c $(LIBS)
+ 
+ imrot: imrot.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imrot imrot.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imrot imrot.c $(LIBS)
+ 
+ imsize: imsize.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imsize imsize.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imsize imsize.c $(LIBS)
+ 
+ imstack: imstack.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imstack imstack.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imstack imstack.c $(LIBS)
+ 
+ imextract: imextract.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imextract imextract.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imextract imextract.c $(LIBS)
+ 
+ imstar: imstar.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h libwcs/lwcs.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imstar imstar.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imstar imstar.c $(LIBS)
+ 
+ isfile: isfile.c $(LIBWCS) libwcs/fitshead.h
+-	$(CC) $(CFLAGS) -o $(BIN)/isfile isfile.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isfile isfile.c $(LIBS)
+ 
+ isfits: isfits.c $(LIBWCS) libwcs/fitshead.h
+-	$(CC) $(CFLAGS) -o $(BIN)/isfits isfits.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isfits isfits.c $(LIBS)
+ 
+ isnum: isnum.c $(LIBWCS) libwcs/fitshead.h
+-	$(CC) $(CFLAGS) -o $(BIN)/isnum isnum.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isnum isnum.c $(LIBS)
+ 
+ isdate: isdate.c $(LIBWCS) libwcs/fitshead.h
+-	$(CC) $(CFLAGS) -o $(BIN)/isdate isdate.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isdate isdate.c $(LIBS)
+ 
+ isimlist: isimlist.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/isimlist isimlist.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isimlist isimlist.c $(LIBS)
+ 
+ isrange: isrange.c
+-	$(CC) $(CFLAGS) -o $(BIN)/isrange isrange.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/isrange isrange.c
+ 
+ imwcs: imwcs.c $(LIBWCS) libwcs/fitsfile.h libwcs/lwcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/imwcs imwcs.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/imwcs imwcs.c $(LIBS)
+ 
+ immatch: immatch.c $(LIBWCS) libwcs/fitsfile.h libwcs/lwcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/immatch immatch.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/immatch immatch.c $(LIBS)
+ 
+ immwcs: immwcs.c $(LIBWCS) libwcs/fitsfile.h libwcs/lwcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/immwcs immwcs.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/immwcs immwcs.c $(LIBS)
+ 
+ keyhead: keyhead.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/keyhead keyhead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/keyhead keyhead.c $(LIBS)
+ 
+ matchcat: matchcat.c $(LIBWCS) libwcs/wcscat.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/matchcat matchcat.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/matchcat matchcat.c $(LIBS)
+ 
+ newfits: newfits.c $(LIBWCS) libwcs/fitshead.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/newfits newfits.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/newfits newfits.c $(LIBS)
+ 
+ remap: remap.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/remap remap.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/remap remap.c $(LIBS)
+ 
+ scat: scat.c $(LIBWCS) libwcs/wcscat.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/scat scat.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/scat scat.c $(LIBS)
+ 
+ sethead: sethead.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcs.h
+-	$(CC) $(CFLAGS) -o $(BIN)/sethead sethead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/sethead sethead.c $(LIBS)
+ 
+ setpix: setpix.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/setpix setpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/setpix setpix.c $(LIBS)
+ 
+ sky2xy: sky2xy.c $(LIBWCS) libwcs/wcs.h libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/sky2xy sky2xy.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/sky2xy sky2xy.c $(LIBS)
+ 
+ skycoor: skycoor.c $(LIBWCS) libwcs/wcs.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/skycoor skycoor.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/skycoor skycoor.c $(LIBS)
+ 
+ sp2char: sp2char.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/sp2char sp2char.c $(LIBWCS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/sp2char sp2char.c $(LIBWCS)
+ 
+ subpix: subpix.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/subpix subpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/subpix subpix.c $(LIBS)
+ 
+ sumpix: sumpix.c $(LIBWCS) libwcs/fitsfile.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/sumpix sumpix.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/sumpix sumpix.c $(LIBS)
+ 
+ wcshead: wcshead.c $(LIBWCS) libwcs/fitsfile.h
+-	$(CC) $(CFLAGS) -o $(BIN)/wcshead wcshead.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/wcshead wcshead.c $(LIBS)
+ 
+ xy2sky: xy2sky.c $(LIBWCS) libwcs/wcs.h libwcs/wcscat.h
+-	$(CC) $(CFLAGS) -o $(BIN)/xy2sky xy2sky.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/xy2sky xy2sky.c $(LIBS)
+ 
+ simpos: simpos.c libwcs/libwcs.a
+-	$(CC) $(CFLAGS) -o $(BIN)/simpos simpos.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/simpos simpos.c $(LIBS)
+ 
+ gsc2cat: gsc2cat.c $(LIBWCS)
+-	$(CC) $(CFLAGS) -o $(BIN)/gsc2cat gsc2cat.c $(LIBS)
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/gsc2cat gsc2cat.c $(LIBS)
+ 
+ tmcat: tmcat.c
+-	$(CC) $(CFLAGS) -o $(BIN)/tmcat tmcat.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/tmcat tmcat.c
+ 
+ tmcate: tmcate.c
+-	$(CC) $(CFLAGS) -o $(BIN)/tmcate tmcate.c
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(BIN)/tmcate tmcate.c
+ 
+ $(LIBWCS): libwcs/*.c libwcs/*.h
+-	cd libwcs; make
++	$(MAKE) CC=$(CC) -C libwcs
++
++install:
++	test -e $(DESTDIR)$(PREFIX)/bin || mkdir -p $(DESTDIR)$(PREFIX)/bin
++	test -e $(DESTDIR)$(PREFIX)/include || mkdir -p $(DESTDIR)$(PREFIX)/include/wcstools
++	test -e $(DESTDIR)$(PREFIX)/lib/wcstools || mkdir -p $(DESTDIR)$(PREFIX)/lib/wcstools
++	test -e $(DESTDIR)$(PREFIX)/share/wcstools || mkdir -p $(DESTDIR)$(PREFIX)/share/wcstools
++	install ./bin/* $(DESTDIR)$(PREFIX)/bin
++	install ./libwcs/*.so $(DESTDIR)$(PREFIX)/lib/wcstools
++	install ./libwcs/*.so.* $(DESTDIR)$(PREFIX)/lib/wcstools
+ 
+ objclean:
+-	cd libwcs; make clean
++	$(MAKE) -C libwcs clean
+ 
+ binclean:
+ 	rm -f ./bin/*
+ 
+ clean:
+-	make objclean; make binclean
++	objclean binclean
+diff --git a/libwcs/Makefile b/libwcs/Makefile
+index ec2fae0..038ec61 100644
+--- a/libwcs/Makefile
++++ b/libwcs/Makefile
+@@ -1,5 +1,10 @@
+-CFLAGS= -g -D_FILE_OFFSET_BITS=64
+-CC= cc
++CFLAGS+= -fPIC
++
++VERSION?= 3.9.7
++VERSION_PARTS= $(subst ., ,$(VERSION))
++VERSION_MAJOR= $(word 1,$(VERSION_PARTS))
++VERSION_MINOR= $(word 2,$(VERSION_PARTS))
++VERSION_MICRO= $(word 3,$(VERSION_PARTS))
+ 
+ OBJS =	imsetwcs.o imgetwcs.o matchstar.o findstar.o daoread.o wcscon.o \
+ 	fitswcs.o wcsinit.o wcs.o ty2read.o webread.o tmcread.o \
+@@ -11,10 +16,19 @@ OBJS =	imsetwcs.o imgetwcs.o matchstar.o findstar.o daoread.o wcscon.o \
+ 	sortstar.o platefit.o iget.o fileutil.o \
+ 	wcslib.o lin.o cel.o proj.o sph.o wcstrig.o distort.o poly.o
+ 
+-libwcs.a:	$(OBJS)
++all: libwcs.so.$(VERSION) libwcs.a
+ 	ar rv $@ $?
+ 	ranlib $@
+ 
++libwcs.a: $(OBJS)
++	ar rv $@ $?
++	ranlib $@
++
++libwcs.so.$(VERSION): $(OBJS)
++	$(CC) $(LDFLAGS) -shared -o $@ -Wl,-soname,libwcs.so.$(VERSION_MAJOR) $? -lm
++	ln -s libwcs.so.$(VERSION) libwcs.so.$(VERSION_MAJOR)
++	ln -s libwcs.so.$(VERSION) libwcs.so
++
+ actread.o:	fitsfile.h wcscat.h wcs.h fitshead.h wcslib.h
+ binread.o:	wcscat.h wcs.h fitshead.h wcslib.h
+ ctgread.o:	wcscat.h wcs.h fitshead.h wcslib.h
+@@ -67,4 +81,4 @@ webread.o:	wcscat.h
+ worldpos.o:	wcs.h fitshead.h wcslib.h
+ 
+ clean:
+-	rm -f *.a *.o
++	rm -f *.a *.o *.so *.so.*
+-- 
+2.41.0
+