108 lines
4.0 KiB
Plaintext
108 lines
4.0 KiB
Plaintext
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INSTALLATION
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------------
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a) Make sure you have a working vsprintf and vfprintf in your library.
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(If your system does not have them in your library, you can get
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a copy of the BSD4.3-tahoe stdio that is freely copyable. It
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is available from uunet.uu.net. For Minix systems, a vsprintf.c
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is included.)
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b) EDIT the Makefile for the correct definitions. Read the comments in
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the the Makefile and make the changes needed. (A "full" explanation
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of all the C defines are given at the end of this file.) If your are
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on a MINIX machine, make sure the correct definitions for $O, $CFLAGS,
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and $LDFLAGS are uncommented in the makefile.
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NOTE: "configure" is a shell scritp that is automatically run by make
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to configure the bc source to your operating system. You should still
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look at the Makefile.
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d) "make derived" (If you need it.)
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The distribution contains the files bc.c.dist y.tab.h.dist and
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scan.c.dist. These are provided so that you do not need a working
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yacc and flex (lex). This program was designed to work with the free
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programs byacc (berkeley yacc) and flex. It should work with other
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versions of yacc and lex, but it is not guaranteed to work.
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If you do not have yacc or flex, give the command to get the *.dist
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files to their proper place. This insures that make will not try
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to make these derived files from their original source. Use the
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"make derived" before trying to compile bc.
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e) "make"
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compiles bc
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f) "make install"
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installs bc and libmath.b (if needed) in their directories.
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g) Use bc!
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DEFINES
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-------
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The following the are some defines that are automatically generated
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by the configure script. In most cases, you do not need to deal
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with them. The configure script is automatically run by make.
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BC_MATH_FILE=$(LIBFILE)
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This defines the location of the math library file. If you
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use this definition, the math library is read from LIBFILE.
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If you do not define this, bc will include a "compiled" form
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of the math library with the executable and will not need to
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read any external file if the -l flag is given.
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VARARGS
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The variable args mechanism is assumed to be ANSI stdarg.
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Use -DVARARGS for Ultrix, SUN-OS, BSD, and other UNIX versions that
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use traditional varargs,
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For MINIX and ANSI compilers (gcc et al) do NOT use -DVARARGS.
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NO_LIMITS
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Use this for systems without the /usr/include/limits.h file.
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(BSD4.3 is one.) You should check the values of INT_MAX and
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LONG_MAX in the file const.h if you use -DNO_LIMITS.
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NO_UNISTD
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Use this for systems without /usr/include/unistd.h.
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-DNO_STDLIB
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Use this for systems without /usr/include/stdlib.h.
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STRINGS_H
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Include the file <strings.h> instead of <string.h>.
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The following defines may need to be added by hand to the Makefile if
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you want them. They are not generated by the configure script.
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-DOLD_EQ_OP
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Causes bc to recognize =<op> as the same as <op>=. The =<op> is
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the old style. It makes "a =- 1" ambiguous. With OLD_EQ_OP defined
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it is equivalent to "a -= 1" and with OLD_EQ_OP undefined it is
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equivalent to "a = -1".
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-DSMALL_BUF
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Use this IF you are using flex AND you have a systems with limited
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memory space. If you use this, you should also use -DBC_MATH_FILE.
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This is "standard" for MINIX systems running on the IBM_PC.
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-DSHORTNAMES
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If your compiler keeps a limited number of characters from names,
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you should include this define. It is needed for the K&R compiler
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on MINIX and is automatically added for MINIX on the IBM_PC.
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-DDEBUG=n
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Compile the debugging code. The higher the number, the more
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debugging code. The degugging code is not very good.
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POSSIBLE PROBLEMS
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-----------------
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There might be some possible problems compiling due to different
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versions of the header files. scan.c may require to edit out some
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definitions of malloc and free. Others should compile with the
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correct set of defines.
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