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INSTALLATION for GNU bc version 1.03 (Including GNU dc.)
---------------------------------------------------------
a) Make sure you have a working vsprintf and vfprintf in your library.
(If your system does not have them in your library, you can get
one of several stdio packages that are freely copyable. The GNU
libc has a complete stdio package. For Minix 1.5 systems,
a vsprintf.c is included.)
b) run "configure" with the "standard" options for a configure of gnu
products. The major parameter for bc is the "--prefix=path"
option to find the executable and manual directories. For more help,
give the command "configure --help".
c) "make derived" (If you need it.)
The distribution contains the files bc.c.dist y.tab.h.dist and
scan.c.dist. These are provided so that you do not need a working
yacc and flex (lex). This program was designed to work with the free
programs byacc (berkeley yacc) and flex. It should work with other
versions of yacc and lex, but it is not guaranteed to work.
If you do not have yacc or flex, give the command "make derived" to
get the *.dist files to their proper place. This insures that make
will not try to make these derived files from their original source.
Use the "make derived" before trying to compile bc and dc.
e) "make"
compiles bc and dc.
f) "make install"
installs bc, dc, libmath.b (if needed), bc.1, dc.1 and dc.info
in their proper directories.
g) Use bc and dc!
DEFINES
-------
The following defines you may or may not want. To delete one standardly on,
edit the Makefile.in. If you want add their definitions, put their
definition in an environment variable "CFLAGS" for the configure script.
-DOLD_EQ_OP
Causes bc to recognize =<op> as the same as <op>=. The =<op> is
the old style. It makes "a =- 1" ambiguous. With OLD_EQ_OP defined
it is equivalent to "a -= 1" and with OLD_EQ_OP undefined it is
equivalent to "a = -1".
-DDOT_IS_LAST
Causes bc to recognize a single period (".") as a shorthand notation
for the standard variable "last". (This is standardly defined.)
-DSMALL_BUF
Use this IF you are using flex AND you have a systems with limited
memory space.
-DSHORTNAMES
If your compiler keeps a limited number of characters from names,
you should include this define. It is needed for the K&R compiler
on MINIX.
-DDEBUG=n
Compile the debugging code. The higher the number, the more
debugging code. The degugging code is not very good.
POSSIBLE PROBLEMS
-----------------
There might be some possible problems compiling due to different
versions of the header files. scan.c may require to edit out some
definitions of malloc and free. Others should compile with the
correct set of defines.
Hopefully, the autoconf/configure system should remove all problems.
If you do a "make realclean", it removes all files that can be derived
from some other files. This also removes the file "libmath.h" that
is used by the configure script. Without it there, the configure
script makes wrong assumptions about the abilities of your compiler.
To get things back to the point where configure works well you will
need to "make libmath.h", "make distclean" and then run configure again.
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