Plus character ('+') in archive name, can't run ar in MRI mode

Plus character ('+') in archive name, can't run ar in MRI mode

[jyhgekyfbkjsyebf]

Hello list,

problem: I need to combine multiple static libraries into one. Internet said that I can use ar MRI script. However, it doesn't work with archives that have a '+' character in their name, for example, script:

CREATE libfull.a
ADDLIB /usr/local/lib/libgrpc.a
ADDLIB /usr/local/lib/libgrpc++.a
SAVE
END

results in:

❯ ar -M < ../link_line
ar: /usr/local/lib/libgrpc: No such file or directory
++%

Looks like it chokes on '+' there. What do you suggest to do?

Re: Plus character ('+') in archive name, can't run ar in MRI mode

[Fangrui Song]

On Sat, Mar 26, 2022, 09:12 jyhgekyfbkjsyebf via Binutils <
binutils@sourceware.org> wrote:

> Hello list,
>
> problem: I need to combine multiple static libraries into one. Internet
> said that I can use ar MRI script. However, it doesn't work with archives
> that have a '+' character in their name, for example, script:
>
> CREATE libfull.a
> ADDLIB /usr/local/lib/libgrpc.a
> ADDLIB /usr/local/lib/libgrpc++.a
> SAVE
> END
>
> results in:
>
> ❯ ar -M < ../link_line
> ar: /usr/local/lib/libgrpc: No such file or directory
> ++%
>
> Looks like it chokes on '+' there. What do you suggest to do?
>

Seems that + should be accepted.
Also hope someone can implement L modifier to combine archives
https://sourceware.org/bugzilla/show_bug.cgi?id=28851

>

Re: Plus character ('+') in archive name, can't run ar in MRI mode

[jyhgekyfbkjsyebf]

On Sunday, March 27th, 2022 at 11:10 PM, Fangrui Song <i@maskray.me> wrote:

> On Sat, Mar 26, 2022, 09:12 jyhgekyfbkjsyebf via Binutils <binutils@sourceware.org> wrote:
>
> > Hello list,
> >
> > problem: I need to combine multiple static libraries into one. Internet said that I can use ar MRI script. However, it doesn't work with archives that have a '+' character in their name, for example, script:
> >
> > CREATE libfull.a
> >
> > ADDLIB /usr/local/lib/libgrpc.a
> >
> > ADDLIB /usr/local/lib/libgrpc++.a
> >
> > SAVE
> >
> > END
> >
> > results in:
> >
> > ❯ ar -M < ../link_line
> >
> > ar: /usr/local/lib/libgrpc: No such file or directory
> >
> > ++%
> >
> > Looks like it chokes on '+' there. What do you suggest to do?
>
> Seems that + should be accepted.

By that you mean that it is a problem on my side and I'm doing something wrong, or that it is supposed to work, but is a[n] [un]known bug?

> Also hope someone can implement L modifier to combine archives https://sourceware.org/bugzilla/show_bug.cgi?id=28851

Workaround for search engine: create a thin library via cqT: ar cqT result.a a1.a a2.a ... ; then convert thin to normal in MRI:
CREATE result.a
ADDLIB result.a
SAVE
END

Re: Plus character ('+') in archive name, can't run ar in MRI mode

[Nick Clifton]

[-- Attachment #1: Type: text/plain, Size: 980 bytes --]

Hi jyhgekyfbkjsyebf,

> problem: I need to combine multiple static libraries into one.

Do you know about thin archives ?  They might suffice for your needs.
eg:

   ar crvT libfull.a /usr/local/lib/libgrpc.a /usr/local/lib/libgrpc++.a


Alternatively you could extract the object files from both libraries into
a temporary directory and then build a new library using all of them.  eg:

   % mkdir delme
   % cd delme
   % ar x /usr/local/lib/libgrpc.a
   % ar x /usr/local/lib/libgrpc++.a
   % ar cr libfull.a *.o
   % mv libfull.a ..
   % cd ..
   % rm -fr delme

This could of course be done by a script.


> ❯ ar -M < ../link_line
> ar: /usr/local/lib/libgrpc: No such file or directory
> ++%

This is a bug. :-(  Fortunately there is an easy fix.  Please apply the
attached patch to the binutils sources and then build a new copy of the
binutils.  Or alternatively ask the maintainer of whichever distribution
you use to apply this patch to their sources.

Cheers
   Nick

[-- Attachment #2: arlex.l.patch --]
[-- Type: text/x-patch, Size: 383 bytes --]

diff --git a/binutils/arlex.l b/binutils/arlex.l
index a43a6214b3d..145b9e16773 100644
--- a/binutils/arlex.l
+++ b/binutils/arlex.l
@@ -78,7 +78,7 @@ int linenumber;
 "("             { return '('; }
 ")"             { return ')'; }
 ","             { return ','; }
-[A-Za-z0-9/\\$:.\-\_]+  {
+[A-Za-z0-9/\\$:.\-\_\+]+  {
 		yylval.name =  xstrdup (yytext);
 		return FILENAME;
 		}