Trac #17254: Upgrade to Singular-4.x.x

'''Lots''' of stuff has changed in Singular 4.
This is a big update.

Build system completely changed, and a lot of internal stuff.

Original upstream tarball at `www.mathematik.uni-
kl.de/ftp/pub/Math/Singular/SOURCES/4-0-3/`:  `singular-4.0.3p3`
'''dot''' `tar` '''dot''' `gz`

Modified tarball made with spkg-src at:
* http://www.lmona.de/files/sage/singular-4.0.3p3.tar.bz2

This corresponds to commit a070b84d whose message tells 4.0.3p3 and on
which this branch was based:
* Singular/Singular@a070b84d59be835a2946d1386ed
d3221d80f3fe7

You can also make your own tarball based on this commit or another one
with
{{{
env SINGULAR_GIT_COMMIT=a070b84d ./sage --sh build/pkgs/singular/spkg-
src
./sage --package fix-checksum singular
}}}
This script is loosely based on the `make_tar.sh` script from upstream.

URL: https://trac.sagemath.org/17254
Reported by: jdemeyer
Ticket author(s): Jakob Kroeker, Jean-Pierre Flori, Jeroen Demeyer, John
Perry, François Bissey, Leif Leonhardy, Dima Pasechnik
Reviewer(s): François Bissey, Jeroen Demeyer, Ben Hutz, Leif Leonhardy,
Dima Pasechnik, Travis Scrimshaw

build/pkgs/singular/SPKG.txt

@@ -27,39 +27,10 @@ http://www.singular.uni-kl.de/
 
 == Special Update/Build Instructions ==
 
-See spkg-src.
-Note that upstream also ships versions with numbering including a patchlevel.
+See spkg-src to create the source tarball.
 
-Other notes
- * The option '--without-dynamic-kernel' is used on *all*
-   systems with the exception of Linux. The online README at
-   http://www.singular.uni-kl.de/svn/trunk/README says this should
-   be used on Solaris, with no mention of it being necessary for
-   OS X, or any other platform except Solaris.
- * The online readme says that CONFIG_SHELL should be set to /bin/bash
-   on Solaris. This is not done currently. Since this does not build
-   fully as a 64-bit application on Solaris, CONFIG_SHELL should be
-   investigated as a possible cause later.
- * Be sure that Singular/Singular.rc.in is present, as occasionally this
-   was missing, which caused problems on Cygwin (e.g., see #10235)
- * Due to http://www.singular.uni-kl.de:8002/trac/ticket/438, we
-   currently always build Singular with its debug code.  Change
-   --with-debug to $WITH_DEBUG in the configure call if this is fixed.
+Other notes:
  * If the environment variable SAGE_DEBUG is set to "yes", then
    omalloc will be replaced by xalloc. The resulting Singular executable
    and libsingular library will be slower than with omalloc, but allow
    for easier debugging of memory corruptions.
-
-=== Patches ===
- * assert.patch: logic seems to be broken on some platforms
- * Minor.h.patch: needs to have <time.h> included on Cygwin
- * slibdir.patch: set default slibdir to ${datarootdir}/singular
-   instead of ${prefix}/LIB, see #13344.
- * sanitize_gmp_header_hack.patch:
-   Fix and simplify generation of `factory/cf_gmp.h` (cf. #14737).
- * flint.patch: avoid underlinking FLINT in libsingular.
- * exeext.patch: Add $(EXEEXT) to some executable names.
- * cygwin64.path: Support for Cywgin64.
- * templates.patch: do not use -fno-implicit-templates, which breaks
-   the build with NTL 6.2.1 for some GCC versions and remove some
-   useless explicit template instantiations.

build/pkgs/singular/checksums.ini

@@ -1,4 +1,4 @@
 tarball=singular-VERSION.tar.bz2
-sha1=85ba9ce60eb1e0a8bc89d3f492d8b226ef5767d6
-md5=d8d126cdb4fee457de4ed69e936918ef
-cksum=2898347319
+sha1=dd68e84ef7d0e6c35994e0fce0faa8edf38a7bb1
+md5=fa240c6abb01b7c81d1e1942663867e6
+cksum=4229890985

build/pkgs/singular/dependencies

@@ -1,4 +1,4 @@
-$(MP_LIBRARY) ntl flint readline mpfr
+$(MP_LIBRARY) ntl flint readline mpfr cddlib
 
 ----------
 All lines of this file are ignored except the first.

build/pkgs/singular/package-version.txt

@@ -1 +1 @@
-3.1.7p1.p2
+4.0.3p3