[Maxima-bugs] [maxima:bugs] #4094 Build warning in share: grep: warning: stray \ before #

[Robert D. <rob...@us...>]

Well, I reconfigured /bin/sh to point to /bin/bash (via sudo dpkg-reconfigure dash) and I get the same error. For the record the error message is: 

```
Makefile:338: *** unterminated call to function `shell': missing `)'.
```

At this point I'm thinking the error is coming from make, which is trying to piece together the stuff to execute in a shell. 

I updated make to version 4.4 and now it works. Previous version 3.81 was released in 2006, so it's okay to just leave it behind.


---

** [bugs:#4094] Build warning in share: grep: warning: stray \ before #**

**Status:** closed
**Group:** None
**Created:** Mon Jan 30, 2023 11:33 AM UTC by David Billinghurst
**Last Updated:** Sat Feb 04, 2023 09:00 PM UTC
**Owner:** David Billinghurst


There are several harmless build warnings in the share subdirectory.

~~~
grep: warning: stray \ before #
~~~

It is generated in the system call to generate make variable sharefiles.  A web search didn't find any need to escape '#' in an extended grep regex.

The fix is trivial.  Tested  with GNU egrep.  I wonder if it will be a problem with other versions of egrep.

~~~
diff --git a/share/Makefile.am b/share/Makefile.am
index f56124228..5681b5872 100644
--- a/share/Makefile.am
+++ b/share/Makefile.am
@@ -7,8 +7,8 @@ egrep -v 'CVS|Makefile(\.in|\.am)?|^\./Makefile|\.gitignore|\.gitattributes' | \
 egrep -v '/fortran/' | \
 egrep -v 'colnew/ex./' | \
 egrep -v 'lbfgs/.*\.f' | \
-egrep -v '/\.\#' | \
-egrep -v '~|\#' | \
+egrep -v '/\.#' | \
+egrep -v '~|#' | \
 sed -e 's%\./%%' | \
 sort -f -d | \
 sed '$$s/\\$$//' )
~~~


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