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calc/HOWTO.INSTALL
Landon Curt Noll ce17b267be Minor changes to Makefile, HOWTO.INSTALL, CONTRIBUTING.md 
Changed Makefile to set shell before setting the SHELL Makefile
    variable.

    Added text to HOWTO.INSTALL to help people with systems that
    lack the readline package.

    Trimmed long line in the CONTRIBUTING.md file.
2021-12-29 15:16:40 -08:00

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IMPORTANT: Please see the section at the bottom of this file for
some important information on Makefiles used in calc.
###################################################################
# IMPORTANT: DO NOT use make in parallel mode!!! #
###################################################################
# Unfortunately due to the complex dependency issues between #
# Makefile, Makefile.ship and custom/Makefile, parallel make #
# is NOT recommended. Sorry (tm Canada) :) #
###################################################################
Installing calc from the bzip2-ed tarball: 4 easy steps:
(0) If your platform supports i686 RPMs, you may want to go to:
https://github.com/lcn2/calc/releases
Open up the 'Assets' tag below a given release and
download these RPMs:
* calc*.i686.rpm
- all that is needed if you just want to use calc
* calc-devel-*.i686.rpm
- calc *.h header and *.a lib files for use in other programs
* calc.*.src.rpm
- calc source via a SRPM package
Alternately to the above github link, you might try looking at
the RPMs under:
http://www.isthe.com/chongo/src/calc/
=-=
The following 4 steps apply to calc source tree that comes from either:
bunzip2 -c calc-*.tar.bz2 | tar -xvf -
or from:
rpm -ivh calc-*.src.rpm
cd /var/tmp
bunzip2 -c /usr/src/redhat/SOURCES/calc-*.tar.bz2 | tar -xvf -
4 steps:
(1) Look at the makefile, and adjust it to suit your needs.
The top level Makefile and the custom/Makefile require a modern
Make (such as gmake) or an equivalently advanced make. On many
targets, the default make is sufficient. On FreeBSD for example,
probably want to use gmake instead of make.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! By default, calc assumes you have the readline package installed !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! macOS does not have readline, so mac users need to make a choice !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The readline package (-lreadline, -lhistory, -lncurses) used by and
linked into calc by default. If your system does NOT have those
libaraies, then you have two options:
(1-with readline) Install the readline package <- Recommended
Install the readline package first, then compile calc.
For information on the readline package, see:
https://tiswww.case.edu/php/chet/readline/rltop.html
MacOS users can use MacPorts or HomeBrew to install readline:
https://www.macports.org
https://brew.sh
Or compile from the readline.git repo:
http://git.savannah.gnu.org/cgit/readline.git/
(1-w/o readline) Compile calc without readline (not recommended)
Why do we not recommend (1b)? Because using calc with readline
provides a beter user experience.
If you feel you must use calc without the readline package, then you
will need to change your calc Makefile with this patch:
--- Makefile.old 2021-12-29 14:57:56.000000000 -0800
+++ Makefile 2021-12-29 14:59:13.000000000 -0800
@@ -1140,14 +1140,14 @@
#
# If in doubt, set USE_READLINE, READLINE_LIB and READLINE_INCLUDE to nothing.
#
-#USE_READLINE=
-USE_READLINE= -DUSE_READLINE
+USE_READLINE=
+#USE_READLINE= -DUSE_READLINE
#
-#READLINE_LIB=
-#READLINE_EXTRAS=
+READLINE_LIB=
+READLINE_EXTRAS=
#
-READLINE_LIB= -lreadline
-READLINE_EXTRAS= -lhistory -lncurses
+#READLINE_LIB= -lreadline
+#READLINE_EXTRAS= -lhistory -lncurses
#
#READLINE_LIB= -L/usr/gnu/lib -lreadline
#READLINE_EXTRAS= -lhistory -lncurses
@@ -1181,8 +1181,8 @@
# # and using the readline, history, and ncurses libraries.
# #
ifneq ($(HOMEBREW_PREFIX),)
-READLINE_LIB:= -L${HOMEBREW_PREFIX}/opt/readline/lib -lreadline
-READLINE_INCLUDE:= -I${HOMEBREW_PREFIX}/opt/readline/include
+#READLINE_LIB:= -L${HOMEBREW_PREFIX}/opt/readline/lib -lreadline
+#READLINE_INCLUDE:= -I${HOMEBREW_PREFIX}/opt/readline/include
endif
#
#endif /* end of skip for non-Gnu makefiles */
If your target system does not have a modern Makefile
(such as gmake), then you will need to change your
Makefile.simple with this patch:
--- Makefile.simple.orig 2021-12-29 15:00:53.000000000 -0800
+++ Makefile.simple 2021-12-29 15:01:00.000000000 -0800
@@ -1005,14 +1005,14 @@
#
# If in doubt, set USE_READLINE, READLINE_LIB and READLINE_INCLUDE to nothing.
#
-#USE_READLINE=
-USE_READLINE= -DUSE_READLINE
+USE_READLINE=
+#USE_READLINE= -DUSE_READLINE
#
-#READLINE_LIB=
-#READLINE_EXTRAS=
+READLINE_LIB=
+READLINE_EXTRAS=
#
-READLINE_LIB= -lreadline
-READLINE_EXTRAS= -lhistory -lncurses
+#READLINE_LIB= -lreadline
+#READLINE_EXTRAS= -lhistory -lncurses
#
#READLINE_LIB= -L/usr/gnu/lib -lreadline
#READLINE_EXTRAS= -lhistory -lncurses
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! By default, calc assumes you are using a modern gnu-like make tool !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If your target system does not have a modern Makefile (such as gmake),
then you should try using the Makefile.simple and custom/Makefile.simple
files:
mv Makefile Makefile.gmake
cp Makefile.simple Makefile
mv custom/Makefile custom/Makefile.gmake
cp custom/Makefile.simple custom/Makefile
The Makefile, as shipped, is suitable for installation under
Linux and Un*x-like environments. For the most part, the default
values should work. If in doubt, follow the 'When in doubt'
suggestion.
If you are using a modern make (such as gmake), you may override
any values set in the Makefile by adding them to Makefile.local
using the := directive. For example:
HAVE_STRING_H:= YES
HAVE_TIMES_H:= YES
SED:= /usr/local/bin/nsed
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! If you are building under Windows or a Windows-like environment !
! (such as Cygwin or DJGPP), read the README.WINDOWS file. !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You should determine if these Makefile variables are reasonable:
INCDIR Where the system include (.h) files are kept.
BINDIR Where to install calc binary files.
LIBDIR Where to install calc link library (*.a) files.
CALC_SHAREDIR Where to install calc help, .cal, startup, and
config files.
You may want to change the default installation locations for
these values, which are based on the 4 values listed above:
HELPDIR where the help directory is installed
CALC_INCDIR where the calc include files are installed
CUSTOMCALDIR where custom *.cal files are installed
CUSTOMHELPDIR where custom help files are installed
CUSTOMINCDIR where custom .h files are installed
SCRIPTDIR where calc shell scripts are installed
If you want to install calc files under a top level directory,
then set the T value:
The calc install is performed under ${T}, the calc build is
performed under /. The purpose for ${T} is to allow someone
to install calc somewhere other than into the system area.
For example, if:
BINDIR= /usr/bin
LIBDIR= /usr/lib
CALC_SHAREDIR= /usr/share/calc
and if:
T= /var/tmp/testing
Then the installation locations will be:
calc binary files: /var/tmp/testing/usr/bin
calc link library: /var/tmp/testing/usr/lib
calc help, .cal ...: /var/tmp/testing/usr/share/calc
... etc ... /var/tmp/testing/...
If ${T} is empty, calc is installed under /, which is the same
top of tree for which it was built. If ${T} is non-empty, then
calc is installed under ${T}, as if one had to chroot under
${T} for calc to operate.
Look for the section that starts:
################
# compiler set #
################
Select a compiler set by commenting in the appropriate set
of cc options. As shipped the Makefile assumes a gcc-like
environment such as Linux. If a more appropriate cc set if
found below, comment out the Linux set and comment in that
set or edit the gcc set or the common cc set as needed.
You may want to change these Makefile variables from their defaults:
RANLIB
You may or may not need RANLIB when building libraries.
As shipped the Makefile assumes RANLIB is needed.
Comment the in/out the RANLIB value if ranlib does
not work or does not exist.
CALCPAGER
You may want to change the default pager used by calc.
As shipped the Makefile assumes 'more'. On your system
you may find 'less' to be a better pager.
DEBUG
Some compilers (to put it mildly) have bugs. Sometimes the
DEBUG Makefile variable causes the compiler / optimizer to
produce bad code. Other compilers do just fine.
If possible try to use DEBUG=-O3 -g3 (maximum optimization
and debug symbols). If the calc test fails (see step 3),
try lowering either the -O value and/or the -g3. Also try
using -Osomething without -g.
Adjust other Makefile variables as needed.
(2) build calc:
The top level Makefile and the custom/Makefile require a GNU
Make (such as gmake) or an equivalently advanced make. On many
targets, the default make is sufficient. On FreeBSD for example,
one must use gmake instead of make.
If your target system does not have GNU Make (or equivalent), then
you should try using the Makefile.simple and custom/Makefile.simple
files:
mv Makefile Makefile.gmake
cp Makefile.simple Makefile
mv custom/Makefile custom/Makefile.gmake
cp custom/Makefile.simple custom/Makefile
make all
==> We are interested in any compiler warnings (and errors) that
you may find. See the BUGS file if you find any compiler
warning or errors.
NOTE: You can force calc to build with only static libs:
make clobber
make calc-static-only BLD_TYPE=calc-static-only
or force calc to build with only dynamic libs:
make clobber
make calc-dynamic-only BLD_TYPE=calc-dynamic-only
(3) test calc:
make check
NOTE: For a quiet check which only prints if something goes wrong:
make chk
(4) install calc:
make install
We suggest that you might want to read the README.FIRST file and look at
the calc help subsystem. See also the README.md file.
In general, if you run into problems, read the BUGS file and follow
the instructions.
=-=
On calc Makefiles:
How to tell the origin of of a Makefile:
The "# SRC: ... - ..." comment line near the top
of the file indicates the origin of this file.
In each segment below, we indicate what the SRC
comment like will read.
SHELL= ...
On some systems, /bin/sh is a rather reduced shell with
deprecated behavior.
If your system has a up to date, bash shell, then
you may wish to edit the Makefile to use:
SHELL= /bin/bash
On some systems such as macOS, the bash shell is very
far behind to the point where is cannot be depended on.
On such systems, the sh may be a much better alternative
shell for this Makefile to use:
SHELL= /bin/sh
Makefile.local
# SRC: Makefile.local - tweaks to the top level Makefile
Between releases, Makefile.local at the top of the master branch
will contain how we typically build calc and test calc (FYI: we
normally enable things such as -Werror -Wextra -pedantic). When we
push out a release, Makefile.local will be stripped of non-comment
lines. Thus, releases of calc, and, released "calc*.src.rpm"
files and the source tarballs, will have a Makefile.local with
only comments.
If the Makefile is not suitable for you (say because you fetch it
from the top of the master branch between releases), then you may
wish to remove all non-comment lines. I.e., lines that do not start
with the # character.
This Makefile.local assumes you have a modern make command such as
the GNU make. See Makefile.simple comment below if you do not
have such a modern make command.
In the calc GitHub repo, Makefile is the calc build environment
and Makefile.ship is the top level Makefile:
https://github.com/lcn2/calc
Makefile
# SRC: Makefile.ship - top level Makefile
This is the main top level Makefile.
In calc packages such as RPMs, and the tar.bz2 source tarball,
Makefile.ship has been moved into Makefile.
In the calc GitHub repo, Makefile is the calc build environment
and Makefile.ship is the top level Makefile:
https://github.com/lcn2/calc
The Makefile.simple rule of Makefile.ship, when forming the
Makefile.simple file, removes lines from Makefile.ship between
pairs of '#if 0' AND '#endif':
#if 0
lines removed when forming Makefile.simple
...
lines removed when forming Makefile.simple
#endif
The '#if 0' AND '#endif' MUST be at the start of the line.
Any text after the '#if 0' OR '#endif' is ignored.
While they may look like a CPP directives, they are not. The
inline awk script of the Makefile.simple rule does NOT allow
them to nest:
#if 0 /* DO NOT DO THIS */
lines removed when forming Makefile.simple
...
#if 0 /* DO NOT DO THIS */
...
#endif /* DO NOT DO THIS */
...
#endif /* DO NOT DO THIS */
Makefile.simple
# SRC: Makefile.simple - non-GNU version
This is a non-GNU or simple Makefile designed for environments
that do not have a modern make command.
If you have a Makefile.simple file, use these commands to
form a Makefile:
if [ -f Makefile ]; then mv -f Makefile Makefile.orig; fi
cp Makefile.simple Makefile
The Makefile.simple rule from Makefile.ship is used to construct
this file from the contents of Makefile.ship.
In calc packages such as RPMs, and the tar.bz2 source the
Makefile.simple exists. In the calc GitHub repo:
https://github.com/lcn2/calc
this file does NOT exist and must be made via the Makefile.simple
make rule. Therefore, non-GNU and simple make commands are NOT
supported by the calc GitHub repo master branch. Instead, you
need to extract Makefile.simple from one of the calc tar.bz2
source tarball source from a calc source mirror:
http://www.isthe.com/chongo/tech/comp/calc/calc-mirror.html
custom/Makefile
# SRC: Makefile via make -f Makefile custom/Makefile
This is the custom directory Makefile.
custom/Makefile.simple
# SRC: custom/Makefile.simple - non-GNU version
This is a non-GNU or simple Makefile for the custom directory
that is designed for environments that do not have a modern make
command.
In calc packages such as RPMs, and the tar.bz2 source the
Makefile.simple exists. In the calc GitHub repo:
https://github.com/lcn2/calc
this file does NOT exist and must be made via the
custom/Makefile.simple make rule. Therefore, non-GNU and simple
make commands are NOT supported by the calc GitHub repo master
branch. Instead, you need to extract custom/Makefile.simple
from one of the calc tar.bz2 source tarball source from a calc
source mirror:
http://www.isthe.com/chongo/tech/comp/calc/calc-mirror.html
cal/Makefile
# SRC: cal/Makefile
The Makefile for the cal sub-directory.
cscript/Makefile
# SRC: cscript/Makefile
The Makefile for the cscript sub-directory.
help/Makefile
# SRC: help/Makefile
The Makefile for the help sub-directory.
## Copyright (C) 1999-2007,2021 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1999/09/27 20:48:44
## File existed as early as: 1999
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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