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## INSTALL - How to compile and install          Sat Aug 31 12:04:42 CEST 2002
## ===========================================================================
#
# For the impatient:

'cd' into the html2text distribution directory

./configure	(in some shells 'sh ./configure')
make		(or in some cases 'gmake')

'mv' the html2text executable to its installation directory (e.g. /usr/local/bin)


## ---------------------------------------------------------------------------
#
# html2text can be compiled on many UNIX-like platforms, in particular those
# that provide a GNU compiler (g++).

1. Untar the distribution package:

	$ gunzip html2text-1.3.X.tar.gz
	$ tar xf html2text-1.3.X.tar


2. Change into the html2text distribution directory:

	$ cd html2text-1.3.X


3. To generate the make files, issue:

	$ ./configure

If you're using a csh on an old version of System V, you might need to type
'sh ./configure' to prevent the csh from trying to execute 'configure'
itself.

While the script is running, it prints some messages telling which features
it is checking for, alike (the exact output depends on your platform):

| Checking C++ compiler... use "g++"
| Checking <sys/poll.h>... OK
| Checking for socket libraries... no extra libraries required
| Checking "bool"... built-in
| Checking "explicit"... built-in
| Checking Standard C++ library... works; no need to make "./libstd"
| Checking "auto_ptr"... not defined or not working, use
|  "./libstd/include/auto_ptr.h"
| Checking "makedepend" includes... use "-I/usr/include -I/usr/include/bits
|  -I/usr/include/g++ -I/usr/include/gnu -I/usr/include/sys
|  -I/usr/lib/gcc-lib/i486-suse-linux/2.95.3/include "
| Creating "./Makefile" from "./Makefile.in"... done
|
| Preparing completed. You may now run "make" (or "gmake").


4. Then compile html2text with:

	$ make

On non-GNU systems and/or if 'make' fails, you might need to use
'gmake' instead of 'make', in order to force a compilation by g++.

Compiling 'html2text' takes awhile. While 'make' is running, it will print
some messages (and, hopefully, no errors), alike:

| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g html2text.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g html.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g HTMLControl.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g HTMLParser.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g Area.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g format.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g sgml.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g table.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g urlistream.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g Properties.C
| g++ -c  -DVERSION=1.3.1    -DAUTO_PTR_BROKEN -O2 -g cmp_nocase.C
| g++ -O2 -g html2text.o html.o HTMLControl.o HTMLParser.o Area.o format.o
|  sgml.o table.o urlistream.o Properties.o cmp_nocase.o    -o html2text
|
| Compilation completed. You may now move "html2text", "html2text.1.gz"
| and "html2textrc.5.gz" to their installation directories (e.g.
| "/usr/local/bin", "/usr/local/man/man1" and "/usr/local/man/man5").


5. No automatic installation is provided by now.

Be root. Then move the html2text executable and the manual pages to their
respective installation directories (e.g. /usr/local/bin, /usr/local/man/man1
and /usr/local/man/man5). Be sure you set the execution rights accordingly
and the files are owned by root or whoever owns binaries on your system. E.g.:

	# install -s -m 755 html2text /usr/local/bin
	# install -m 644 html2text.1.gz /usr/local/man/man1
	# install -m 644 html2textrc.5.gz /usr/local/man/man5

After this, create a directory for the documentation files at an appropriate
place (e.g. /usr/doc/html2text or /usr/share/doc/html2text), and move all
documentation files into that folder. E.g.:

	# install -d -m 755 /usr/share/doc/html2text
	# install -b -p -m 644 *[ABD-Z] /usr/share/doc/html2text

Be sure you read the README file!


## ---------------------------------------------------------------------------
#
# If you prefer to install the program as an RPM package:

Place the orginal source tarball to rpm's build directory, e.g.
/usr/src/packages/SOURCES

Then, download the spec file from the program's homepage and start the build
with the command
rpm -bb html2text.spec

After successfull compilation, rpm will print a message like
| Wrote: /usr/src/packages/RPMS/i386/html2text-1.3.1-1.i386.rpm

This package can now be installed with rpm, e.g.
rpm -Uhv /usr/src/packages/RPMS/i386/html2text-1.3.1-1.i386.rpm


## ===========================================================================
#
# Hints for porting html2text to other platforms and for solving other problems:

On g++ version 3, the 'istream.h' header file from the compiler's 'backward'
directory is used. You might need to point to that directory in the Makefile's
line beginning with 'LIBSTDCXX_INCLUDES', e.g.
LIBSTDCXX_INCLUDES = -I/usr/local/include/g++-v3/backward

Some compilers have weird built-in rules which collide with the rules in the
make files. If 'make' fails, then try to disable the built-in rules. For most
'make' utilities, this can be achieved by specifying the '-r' command line
option, i.e. 'make -r'.

From version 1.02, html2text requires the "socket()" function and its
friends, which live in different libraries for the different systems.
"configure" tries several sets of "-l" linker options to find the right
libraries.

Some C++ compilers lack a built-in "bool" data type. "configure" attempts to
find a suitable definition which it passes to the compiler with
"-DBOOL_DEFINITION=...".

html2text requires a standard C++ library. Since some old C++ compilers do
not come with a standard C++ library, I have implemented parts of the library
in the 'libstd' subdirectory; the exported header files are in
'libstd/include'. For platforms which come with a (working) standard C++
library, the "home-grown" library in 'libstd' is not compiled and linked.
However, on some platforms, these librarys did not work. I don't know if this
because the compiler or our 'libstd' library is broken, or because we have
some syntax errors in the source code files.

Some old GNU Standard C++ Library versions falsely re-names "list::erase()"
as "list::remove()". I fixed this with a "-DSTRING_ERASE=remove" on the "g++"
command line.

Some compilers do come with a Standard C++ Library, but the definition of the
"auto_ptr" template is missing from "<memory>", or is not standard-compliant.
This condition is checked by "configure" and "./libstd/include/auto_ptr.h" is
included if necessary (preprocessor symbol "HAS_WORKING_AUTO_PTR").

"make depend" attempts to run the MAKEDEPEND utility (not included in this
package). Unfortunately, most C++ compilers implicitly use some "secret"
include directories, which MAKEDEPEND doesn't know of; as a result,
MAKEDEPEND may issue some "could not find..." errors, which shouldn't worry
you. The "configure" script attempts to guess the "secret include directory"
and passes it with "-I" to MAKEDEPEND.

To generate 'HTMLParser.C' and 'HTMLParser.h' from 'HTMLParser.y' and
'HTMLParker.k' (which can be archived with the 'make bison-local' directive),
you need bison++ version 2.2, written by Alain Coetmeur. Unfortunately, this
version is completely outdated and thus not longer being maintained or
supported in any way. As you will need it if you want to hack into the program,
you can find the program's sources on html2text's homepage.
However, the already generated 'HTMLParser.C' and 'HTMLParser.h' files are
included into html2text's source code package, enableing anybody to compile
html2text without having to install bison++-2.2 before.


## ===========================================================================

Martin Bayer <mbayer@zedat.fu-berlin.de>