URL: <https://savannah.gnu.org/bugs/?66438>
Summary: configure fails in since
180d665d19fea419235ea173dce8b4f4e8a5cf65
Group: GNU roff
Submitter: sschober
Submitted: Wed 13 Nov 2024 08:16:54 PM UTC
Category: General
Severity: 3 - Normal
Item Group: Build/Installation
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
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Follow-up Comments:
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Date: Wed 13 Nov 2024 08:16:54 PM UTC By: Sven Schober <sschober>
Hi!
Since commit 180d665d19fea419235ea173dce8b4f4e8a5cf65:
commit 180d665d19fea419235ea173dce8b4f4e8a5cf65
Author: G. Branden Robinson <g.branden.robin...@gmail.com>
Date: Thu Oct 24 13:27:43 2024 -0500
XXX version validity check
configure fails form me on mac os with the following error:
./configure --without-x --with-uchardet CPPFLAGS="-I/opt/homebrew/include"
checking checking that groff version string has valid format... 1.23.0
invalid
configure: groff's version string must start with three decimal
integers separated by dots. "1.23.0" does not match.
configure: error: Aborting.
I narrowed it down to this if expression failing:
if expr "$SHORT_VERSION" : '[[0-9]]\+\.[[0-9]]\+\.[[0-9]]\+' \
I think this might be because expr behaves differently on mac os than on a
linux distribution?
man expr | egrep 'against' -A1
The “:” operator matches expr1 against expr2, which must be
a
basic regular expression. The regular expression is anchored to
So... expr wants a _basic_ RE
.
And inspecting re_format(7) tells me:
man re_format | grep 'are ordinary' -C2
Obsolete (“basic”) regular expressions differ in several respects.
‘|’
is an ordinary character and there is no equivalent for its
functionality. ‘+’ and ‘?’ are ordinary characters, and their
functionality can be expressed using bounds (‘{1,}’ or ‘{0,1}’
respectively). Also note that ‘x+’ in modern REs is equivalent to
‘xx*’.
I can rewrite the re to:
expr "$SHORT_VERSION" : '[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}'
6
But I do not know, if this is still matching on other machines.
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