For MS Windows: Make code model path absolute.
Call LoadLibrary only when *.cm file exists. Until now
spurious return from LoadLibrary prevented error message,
when *.cm was not found, followed by a crash upon 'quit'.
or partial paths from environmental variables. The env variable
names have to start with '$' as the first character after the .inc
or .lib token. Two consecutive env variables are possible. They are
read each until directory separator '/' or '\\', or if none is found,
until the end of the line. In this case the filename has to be included
in the env variable. A .lib line may look like
.lib "$ENVS1\$ENVS2/libraries\sky130_fd_pr\latest\models\sky130.lib.spice" tt
If an env variable is read successfully, a ngspice variable with
the same name (without leading '$') and contents is defined for
use in a .control section.
or partial paths from an environmental variable. The env variable
name has to start with '$' as the first character after the .inc
or .lib token. It is read until it hits a directory separator '/' or '\\',
or if none is found, until the end of the line. In this case the filename
has to be included in the env variable.
If the env variable is read successfully, a ngspice variable with
the same name (without leading '$') and contents is defined for
use in a .control section.
for loading the next .include file.
If input directory dir_name is not set when loading .include files,
set it to the first .include found.
Both instruction add to the search paths for file to be inluded
and are valuable when the netlist is sent by circbyline without
input file involved.
Add controlled_exit() to errors when parsing functions.
Add verbose error messages, including line number and
name of the source file.
.lib file handlinmg with its recursive structure probably needs
testing and improvements.
More error messages may need this update.
Add wordlist sourceinfo to store input sources
path/file, internal, etc.)
debug_out.txt adds line info (var. sourcelineinfo)
Add sourcelineinfo to wordlist sourceinfo and to each new line.
When adding lines due to compatibility handling, use existing
linenum_orig and linesource.
Holger Vogt
dwarning
Giles Atkinson
Pat Deegan