[Bug libstdc++/12250] New: --disable-shared disables too much

[Bug libstdc++/12250] New: --disable-shared disables too much

[bim2003 at basistech dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250

           Summary: --disable-shared disables too much
           Product: gcc
           Version: 3.2.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bim2003 at basistech dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.8
  GCC host triplet: sparc-sun-solaris2.8
GCC target triplet: sparc-sun-solaris2.8

My goal is to build a copy of gcc where (a) there are no shared libs produced 
for libstdc++ (or other) components, but (b) it is possible to use the results 
to build shared libraries. This requires the production of a libstdc++.a that 
is compiled PIC on solaris. --disable-shared resulted in a libstdc++ that is 
not compiled pic, and so can't be linked with a shared lib.

If I've missed something in the configure doc that explains how to accomplish 
this, I apologize.

[Bug libstdc++/12250] --disable-shared disables too much

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-11 15:22 -------
Not really bug as --disable-shared disables the building the shared libraries which are the PIC 
ones (on most targets that is, except for where PIC is default like *-*-darwin*).  
>From <http://gcc.gnu.org/install/configure.html>:
Use --disable-shared to build only static libraries.

Which means not shared library versions.

[Bug libstdc++/12250] --disable-shared disables too much

[bim2003 at basistech dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250


bim2003 at basistech dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|INVALID                     |


------- Additional Comments From bim2003 at basistech dot com  2003-09-11 15:39 -------
On Solaris, there is a sort of tri-state logic. You can build any of:

(1) a .a file containing files compiled -fPIC
(2) a .a file containing files not compiled -fPIC
(3) a .so file.

There are good reasons to want #1, and, as a result, for about 10 years people 
working on Solaris have built these things.

In my case, I want to make binaries that are self-contained and don't depend on 
a libstdc++.so. On the other hand, I want some of those binaries to be, 
themselves, shared libraries. This requires a libstdc++.a that contains .o 
files created with -fPIC.

On Intel, this doesn't come up, because -PIC is optional, and so the 
standard .a that results from a --disable-shared configuration can be used as 
part of the build of a shared library. On sparc, some people I know just always 
build with PIC, and some build two different archives.

I hope it isn't rude to repopen. If I still haven't convinced you, I'm not 
planning to be a pest.

[Bug libstdc++/12250] --disable-shared disables too much

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250



------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-11 15:45 -------
Actually it is tri-state on many targets

[Bug libstdc++/12250] --disable-shared disables too much

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement


------- Additional Comments From bangerth at dealii dot org  2003-09-11 17:57 -------
I think we should leave this to the libstdc++ maintainers. They know how
difficult something like this would be, and whether they would be willing
to maintain it.
W.

[Bug libstdc++/12250] --disable-shared disables too much

[aoliva at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250



------- Additional Comments From aoliva at gcc dot gnu dot org  2003-09-12 14:58 -------
--with-pic should get libtool to compile PIC for static libraries as well

[Bug libstdc++/12250] --disable-shared disables too much

[bkoz at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250



------- Additional Comments From bkoz at gcc dot gnu dot org  2003-09-17 19:37 -------

... what Alexandre said, but other options include.

make CXXFLAGS='-fPIC' target-libstdc++-v3

or

configuring with (from http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html)

./configure --enable-cxx-flags='-fPIC'

etc etc. 

Can we close this?
-benjamin

[Bug libstdc++/12250] --disable-shared disables too much

[bim2003 at basistech dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250



------- Additional Comments From bim2003 at basistech dot com  2003-09-17 19:39 -------
If you make configure --help mention --with-pic, then you'll never have to 
take another report like this again. ;-)

Sure, close it.

[Bug libstdc++/12250] --disable-shared disables too much

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-17 19:41 -------
Closing as per reporter.

[Bug libstdc++/12250] --disable-shared disables too much

[aoliva at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12250



------- Additional Comments From aoliva at gcc dot gnu dot org  2003-09-18 03:32 -------
FWIW, libstdc++-v3/configure --help does show --with-pic as one of the options.
 top-level configure doesn't show all available options for all available
sub-projects, and it would b e tricky to arrange for it to do so.