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GitHub Repository: sagemath/sagesmc
 Path: blob/master/build/pkgs/lcalc/SPKG.txt
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= lcalc =

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== Description ==

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Michael Rubinstein's L-function calculator.

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== License ==

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 * LGPL V2+

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== SPKG Maintainers ==

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 * Rishikesh

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== Upstream contact ==

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Michael Rubinstein <[email protected]>

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Sources: http://oto.math.uwaterloo.ca/~mrubinst/L_function_public/L.html

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Newer beta version 1.3 (not yet in Sage):

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http://code.google.com/p/l-calc/

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== Dependencies ==

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 * GMP/MPIR

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 * MPFR

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 * PARI

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 * GNU patch

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== Special Update/Build Instructions ==

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 * There is some garbage in the upstream sources which should be removed:

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     src/include/.Lexplicit_formula.h.swp

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     src/include/.Lvalue.h.swp

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     src/include/._.DS_Store

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     src/include/.DS_Store

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     src/include/Lexplicit_formula.h.swap.crap

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     src/include/Lvalue.h.bak

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     src/src/Makefile.old

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     src/src/.Makefile.old.swp

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     src/src/._.DS_Store

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     src/src/.DS_Store

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     src/src/.Lcommandline.ggo.swp

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     src/src/libLfunction.a

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 * We (and apparently also upstream) currently don't build Lcalc's tests

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   (see Makefile), hence there's no spkg-check.

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   This might change in newer upstream versions.

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 * The original Makefile uses $(CC) to compile C++ (also using $(CCFLAGS)),

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   which it defines to 'g++', and hardcodes 'g++' when linking the shared

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   library. (It should use $(CXX) instead, which might *default* to 'g++'.)

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   We now (lcalc-1.23.p10) patch the Makefile also to use $(CXX) for compiling

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   and linking C++; $(CXX) now *defaults* to 'g++', and $(CC) to 'gcc', but

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   both can be overridden by simply setting their respective environment

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   variables.  (Same for $(INSTALL_DIR) btw.)

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== Patches ==

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 * Makefile.patch:

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   We change a lot there, since Lcalc doesn't have a 'configure' script,

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   and hence the Makefile is supposed to be edited to customize Lcalc (build

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   options, locations of headers and libraries etc.).

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   Besides that, we

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   - put CXXFLAGS into Lcalc's "CCFLAGS" used for compiling C++,

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   - remove some stuff involving LDFLAGS1 and LDFLAGS2, setting just LDFLAGS,

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   - use $(MAKE) instead of 'make' in the crude build receipts,

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   - use CXXFLAG64 when linking the shared library,

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   - now use $(CXX) for compiling and linking C++, which *defaults* to 'g++',

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     but can be overridden by setting the environment variable of the same

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     name.  ($(CC) now *defaults* to 'gcc', although currently not really

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     used as far as I can see.)

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   - $(INSTALL_DIR) can now be overridden by simply setting the environment

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     variable of the same name.

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 * Lcommon.h.patch:

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   Uncomment the definition of lcalc_to_double(const long double& x).

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   (Necessary for GCC >= 4.6.0, cf. #10892.)

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   Comment from there:

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     The reason is the following code horror from src/src/include/Lcommon.h:

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     [...]

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     But somebody who is familiar with the codebase should really rewrite lcalc

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     to not redefine the double() cast, thats just fragile and will sooner or

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     later again fail inside some system headers.

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 * pari-2.4.4.patch:

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   Replace obsolete lgeti() by (long)cgeti().

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 * init_stack.patch:

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   Replace obsolete allocatemoremem() by a direct call to the private

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   function pari_init_stack(). The public function allocatemem() prints

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   useless warnings and is by definition treated as an error.

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 * time.h.patch:

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   (Patches src/include/Lcommandline_numbertheory.h)

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   Include also <time.h> in Lcommandline_numbertheory.h (at least required

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   on Cygwin, cf. #9845).

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   This should get reported upstream.

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