Emacs VHDL jump to error - emacs

Question

I cannot make emacs to jump to next-error, previous-error, first-error in vhdl-mode.
I am using FSF Emacs 23.3.1 with recent vhdl-mode 3.33.28 under ubuntu.
I can compile with Modelsim and I get compiler error list:
-- Loading package standard
-- ...
-- Compiling entity foo
** Error: path/foo.vhd(22): (vcom-1136) Unknown identifier "std_olgic".
I tried to adapt error regexp (in compiler-setup) to the simplest one:
\*\* Error: \([a-zA-Z\/_.]*\)(\([0-9]*\)).*
When I use it this way I can see that it parses errors correctly:
sed "s/\*\* Error: \([a-zA-Z\/_.]*\)(\([0-9]*\)).*/\1 \2/" ...
path/foo.vhd 22
I changed "File subexp index" and "Line subexp index" respectively to 1 and 2 but still I cannot jump around errors.

Answer 1

The following config resolves this bug for me
'(vhdl-compile-use-local-error-regexp t)
(add-to-list 'compilation-error-regexp-alist '("** Error: \\(.+\\)(\\([0-9]*\\)):" 1 2))

Answer 2

In Emacs regexps, you need to double-escape parens in a string (explanation). Try something like this: \*\* Error: \\([a-zA-Z0-9/_.]+\\)(\\([0-9]+\\)).*

Answer 3

Sorry to bump an old topic but I just ran into this issue and got things to work out for me.
Here are the settings I used to get it to work:
Regexp:
\(ERROR\|WARNING\|\*\* Error\|\*\* Warning\)[^:]*:\( *[[0-9]+]\)? \(.+\)(\([0-9]+\)):
File subexp index: 3
Line subexp index: 4
Vhdl Compile Use Local Error Regexp (under Vhdl Compile group): Off
And here's my story about it:
http://www.velocityreviews.com/forums/t957495-emacs-vhdl-mode-next-error-previous-error-and-first-error-are-not-working.html
:P
Hope this helps!