Hello Jürgen,
Thank you. It works great. But did you intend to leave output
statements in the code that on start up produces outputlike
APL_lib_root: '/home/fred/Sandbox/APL/MathUtils' at
LibPaths.cc:184APL_lib_root: '/home/fred/Sandbox/APL/MathUtils'
at LibPaths.cc:187is_lib_root(APL_lib_root): '0' at
LibPaths.cc:188APL_lib_root: '/home/fred/Sandbox/APL' at
LibPaths.cc:187is_lib_root(APL_lib_root): '1' at LibPaths.cc:188
Regards,
Fred
On Mon, 2017-06-26 at 21:03 +0200, Juergen Sauermann wrote:
> Hi Fred,
>
>
>
> thanks, fixed in SVN 973.
>
>
>
> I appears as if realpath() does not like it if the input
> buffer is the same as the
>
> output buffer.
>
>
>
> /// Jürgen
>
>
>
>
>
>
>
> On 06/26/2017 06:28 PM, Frederick Pitts
> wrote:
>
>
>
> >
> > Hello Jürgen,
> >
> >
> >
> > It
> > doesn't on Fedora 25 as evidenced by following
> > transcript:
> >
> >
> >
> > )host
> > pwd
> > /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode
> >
> > 0
> >
> > )host ls -d ../../{workspaces,wslib?}
> > ../../workspaces../../wslib1../../wslib2../../wslib6../../w
> > slib7../../wslib8../../wslib9
> >
> > 0
> >
> > )host ls -l ../../workspaces/plotsincos.xml
> > -rw-r--r--
> > 1 fred fred 21284 Jun 21 11:47
> > ../../workspaces/plotsincos.xml
> >
> > 0
> >
> > )load 0 plotsincos
> > )LOAD
> > plotsincos (file
> > /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/workspaces/pl
> > otsincos)
> > failed: No such file or directory
> >
> > )libs
> > Library
> > root:
> > /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode
> >
> > Library reference number mapping:
> >
> > ---------------------------------------------------------
> > ------------------
> > Ref
> > Conf Path State E
> > rr
> > -----------------------------------------------------------
> > ----------------
> > 0
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/workspa
> > ces
> > missing (2)
> > 1
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib1
> > missing (2)
> > 2
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib2
> > missing (2)
> > 3
> > PSYS /usr/local/lib/apl/wslib3 present
> > 4
> > PSYS /usr/local/lib/apl/wslib4 present
> > 5
> > PSYS /usr/local/lib/apl/wslib5 present
> > 6
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib6
> > missing (2)
> > 7
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib7
> > missing (2)
> > 8
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib8
> > missing (2)
> > 9
> > BIN /home/fred/Sandbox/APL/GaussianIntegers/McDonnellCode/wslib9
> > missing (2)
> > ===========================================================
> > ================
> >
> >
> >
> > APL_LIB_ROOT is not set and there are no override entries
> > in the preference files other than for library 3, 4 and
> > 5 in
> > the
> > system preference file.
> >
> >
> >
> > Regards,
> >
> >
> >
> > Fred
> >
> >
> >
> > On Mon, 2017-06-26 at 18:05 +0200, Juergen Sauermann
> > wrote:
> >
> > > Hi Fred,
> > >
> > >
> > >
> > > correct. In APL_LIB_ROOT is not set and no
> > > preferences override any library paths, then
> > >
> > > the first library above ./ that contains two files
> > > or
> > > sub-dirs named workspaces and wslib1 is
> > >
> > > chosen as the library root.
> > >
> > >
> > >
> > > The code is in file LibPaths.cc function
> > > LibPaths::search_APL_lib_root()
> > >
> > >
> > >
> > > Hope it works,
> > >
> > > /// Jürgen
> > >
> > >
> > >
> > >
> > >
> > > On 06/26/2017 05:27 PM,
> > > Frederick Pitts wrote:
> > >
> > >
> > >
> > > > Hello Jürgen,
> > > >
> > > >
> > > >
> > > > My bad. In my original post, I should
> > > > have typed `)load' where I typed ')lib'.
> > > > Thanks for
> > > > the detailed reply. I can
> > > > )save and )load workspaces now.
> > > >
> > > >
> > > >
> > > > But I'm still confused about the following three
> > > > sentences from `apl.html':
> > > >
> > > >
> > > >
> > > > If an environment variable APL_LIB_ROOT is
> > > > defined,
> > > > then its value is used as library-root.
> > > > Otherwise the
> > > > path from the current directory (".") up to the
> > > > root
> > > > directory ("/") is searched until a directory
> > > > containing
> > > > two files ’workspaces’ and ’wslib1’ is found.
> > > > Normally
> > > > ’workspaces’ and ’wslib1’are directories, but
> > > > for the
> > > > computation of library-root files suffice.
> > > >
> > > >
> > > > This passage plus your explanation implies to me
> > > > that
> > > > if APL_LIB_ROOT is unset and there are no
> > > > overrides in
> > > > the preference
> > > > files, an attempt is made to determine the
> > > > library-root by searching from the current
> > > > directory '.'
> > > > up to the root directory '/', stopping when the
> > > > two
> > > > directories or files `workspaces' and `wslib1'
> > > > are found
> > > > in the same directory. If this mechanism were
> > > > to work
> > > > the way I interpret the passage, as long as one
> > > > works in
> > > > subdirectories below one's library-root
> > > > directory, the 0
> > > > .. 9 library numbers are meaningful without
> > > > having to
> > > > set APL_LIB_ROOT or preference override
> > > > entries. And one
> > > > would not have to use paths on the )lib and
> > > > )load
> > > > commands.
> > > >
> > > >
> > > >
> > > > Regards,
> > > >
> > > >
> > > >
> > > > Fred
> > > >
> > > >
> > > >
> > > > On Mon, 2017-06-26 at 12:11 +0200, Juergen
> > > > Sauermann
> > > > wrote:
> > > >
> > > > > Hi Fred,
> > > > >
> > > > >
> > > > >
> > > > > conceptually the )libs command shows the
> > > > > directories that will be used
> > > > >
> > > > > for the different library numbers (ranging
> > > > > from 0-9
> > > > > with 0 being the default
> > > > >
> > > > > library number of none is given).
> > > > >
> > > > >
> > > > >
> > > > > The other (non-library number) argument of
> > > > > the lib
> > > > > command is a directory, and
> > > > >
> > > > > to be distinguished from a library
> > > > > reference number it
> > > > > should contain a /.
> > > > >
> > > > >
> > > > >
> > > > > I suppose the first thing going wrong in
> > > > > your examples
> > > > > below is that the )lib argument
> > > > >
> > > > > seems to be a workspace name while the )lib
> > > > > command
> > > > > expects either a library reference
> > > > >
> > > > > number like 0..9 or the path to a
> > > > > directory.
> > > > >
> > > > >
> > > > >
> > > > > So if ../workspaces/
> > > > > contains workspace plotsincos.xml
> > > > > then the command
> > > > >
> > > > >
> > > > >
> > > > > )lib
> > > > > ../workspaces
> > > > >
> > > > >
> > > > >
> > > > > should display it. For example:
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > )host pwd
> > > > >
> > > > > /home/eedjsa/projects/juergen/apl-1.7/src
> > > > >
> > > > >
> > > > >
> > > > > 0
> > > > >
> > > > >
> > > > >
> > > > > )lib ../
> > > > >
> > > > > autom4te.cache/ debian/
> > > > > debian_tmp/ devel_doc/
> > > > >
> > > > > doc/ erlang/
> > > > > ftp-upload/ gnu-apl.d/
> > > > >
> > > > > html/ m4/
> > > > > rpm/ src/
> > > > >
> > > > > support-files/ tools/
> > > > > web-home/ workspaces/
> > > > >
> > > > > wslib1/ wslib2/
> > > > > wslib3/ wslib4/
> > > > >
> > > > > wslib5/
> > > > >
> > > > > )lib ../workspaces
> > > > >
> > > > > APL_CGI LSQRL RU1
> > > > > RU2 RUBIK SCRIPT
> > > > >
> > > > > ScalarBenchmark XSudoku sudoku
> > > > > sudoku_DLX test tt
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Now the locations of library directories
> > > > > can be
> > > > > specified in different ways. The library
> > > > > root
> > > > > mechanism
> > > > >
> > > > > assumes a single directory that contains
> > > > > (at least)
> > > > > two subdirectories named workspaces and
> > > > > wslib1.
> > > > >
> > > > > These names come from the IBM APL2
> > > > > interpreter which
> > > > > is using a similar scheme (but without
> > > > > giving
> > > > >
> > > > > any rules for it).
> > > > >
> > > > >
> > > > >
> > > > > GNU APL starts with this library root
> > > > > scheme, but each
> > > > > directory can be overridden by either the
> > > > > system's
> > > > >
> > > > > preference file and/or the user's
> > > > > preference file. the
> > > > > )LIBS command then tells how the library
> > > > > paths for
> > > > >
> > > > > the different library reference numbers
> > > > > were computed.
> > > > > For example:
> > > > >
> > > > > -------------------------------------------
> > > > > --------------------------------
> > > > >
> > > > > Ref Conf
> > > > > Path
> > > > >
> > > > > State Err
> > > > >
> > > > > -----------------------------------------
> > > > > ----------------------------------
> > > > >
> > > > > 0 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/workspaces
> > > > > present
> > > > >
> > > > > 1 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib1
> > > > > present
> > > > >
> > > > > 2 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib2
> > > > > missing (2)
> > > > >
> > > > > 3 PSYS
> > > > > /usr/local/lib/apl/wslib3
> > > > >
> > > > > present
> > > > >
> > > > > 4 PSYS
> > > > > /usr/local/lib/apl/wslib4
> > > > >
> > > > > present
> > > > >
> > > > > 5 PSYS
> > > > > /usr/local/lib/apl/wslib5
> > > > >
> > > > > present
> > > > >
> > > > > 6 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib6
> > > > > missing (2)
> > > > >
> > > > > 7 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib7
> > > > > missing (2)
> > > > >
> > > > > 8 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib8
> > > > > missing (2)
> > > > >
> > > > > 9 BIN
> > > > > /home/eedjsa/projects/juergen/apl-
> > > > > 1.7/src/wslib9
> > > > > missing (2)
> > > > >
> > > > > =========================================
> > > > > ==================================
> > > > >
> > > > >
> > > > >
> > > > > This tells us that libraries 3, 4, and 5
> > > > > were
> > > > > specified by PSYS (system preferences file,
> > > > > e.g.
> > > > >
> > > > > /usr/local/etc/gnu-apl.d/preferences) while
> > > > > the
> > > > > others are computed from the current
> > > > > directory (BIN).
> > > > >
> > > > > The State and Err columns tell if the
> > > > > directory is
> > > > > accessible and the errno if not.
> > > > >
> > > > >
> > > > >
> > > > > If I remember correctly then the )lib
> > > > > command wants
> > > > > either a library reference number (0-9) or
> > > > > a
> > > > >
> > > > > path, but not both. If it fails, then )more
> > > > > tells
> > > > > which directory was tried (I fixed the
> > > > > spelling
> > > > > mistake)
> > > > >
> > > > > and the strerror(errno) of the failed
> > > > > operation:
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > )lib xxx
> > > > >
> > > > > IMPROPER LIBRARY REFERENCE 'xxx': No such
> > > > > file or directory
> > > > >
> > > > > )more
> > > > >
> > > > > path 'xxx' could not be openend as
> > > > > directory:
> > > > > No such file or directory
> > > > >
> > > > >
> > > > >
> > > > > Best Regards,
> > > > >
> > > > > /// Jürgen
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On 06/26/2017 06:07 AM,
> > > > > Frederick Pitts wrote:
> > > > >
> > > > >
> > > > >
> > > > > > Hello Jürgen,
> > > > > >
> > > > > > The apl.html doc indicates that if environment variable
> > > > > > APL_LIB_ROOT is not defined, the subject search path will
> > > > > > be from the
> > > > > > current directory '.' up to the root directory '/' stopping
> > > > > > when a
> > > > > > directory containing two directories ’workspaces’ and
> > > > > > ’wslib1’ is
> > > > > > found.
> > > > > >
> > > > > > The above does not work on my platform, Fedora 25. For
> > > > > > instance, 'plotsincos.xml' is in ../workspaces relative the
> > > > > > current
> > > > > > directory.
> > > > > >
> > > > > > )lib plotsincos
> > > > > >
> > > > > > yields
> > > > > >
> > > > > > IMPROPER LIBRARY REFERENCE 'plotsincos': No such file or
> > > > > > directory
> > > > > >
> > > > > > and
> > > > > >
> > > > > > )lib 0 plotsincos
> > > > > >
> > > > > > yields
> > > > > >
> > > > > > IMPROPER LIBRARY REFERENCE '0': No such file or directory.
> > > > > >
> > > > > > Is this a bug or has the feature been removed and the
> > > > > > documentation is
> > > > > > out of date.
> > > > > >
> > > > > > A related question is if the feature were to work
> > > > > > correctly,
> > > > > > would the )libs command use the feature so its output
> > > > > > reflects the
> > > > > > location of the library directory paths that will be used
> > > > > > by the )lib
> > > > > > command. Currently, it does not.
> > > > > >
> > > > > > Regards,
> > > > > >
> > > > > > Fred
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
>
>
>
>
>
