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From: wheeler@ida.org (David Wheeler)
Newsgroups: comp.lang.ada
Subject: Re: Alsys Ada and math package.
Date: 9 Feb 1995 14:39:16 GMT
Organization: IDA, Alexandria, Virginia
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Date: 1995-02-09T14:39:16+00:00
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ab@captblood.armstrong.edu wrote:
: Using Alsys Risc Ada (on Sun SS10, Solaris 2.3), how
: do you make the math package available for use?

: The following compiles fine but fails at link time:
: with math_library; use math_library;
: with TEXT_IO; use TEXT_IO;
: procedure t is
:     package REAL_IO is new FLOAT_IO(FLOAT); use REAL_IO;
:     package new_math is new math(FLOAT); use new_math;
: begin
:  put(asinh(sqrt(6.25)),1,4,0);
:  new_line;
: end t;

: % ada t.ada ; ald t

: Undefined			first referenced
:  symbol  			    in file
: tan                                 C/double_precision_math.o
: log                                 C/double_precision_math.o
...
: ld: fatal: Symbol referencing errors. No output written to ../t

You probably need to give "ald" an extra link-time option to tell
it to include the math library.
I'm not a user of Alsys Risc Ada, but Rational VADS and most
Unix C compilers require such options also when you use
floating point operations.

See if "ald" supports a "-l" (library) option.
If ald works like some other linkers, you may just need to insert "-lm"
(library - math) after the "ald" command.

--- David A. Wheeler
Net address: wheeler@ida.org