Re: How to compile 32bit library on 64bit x86_64 systems?

[Geeky Jim]

Is there a configure option to tell libtool to generate
"sys_lib_search_path_spec" using "i386" instead of "x86_64"?  Below is
a clip of ./libtool --config output.
I am trying to build 32bit binaries on x86_64 architecture.  With
Ralf's help, I was able to pass the appropriate flags to both the
compiler & linker.  I believe this is the only issue remain.

# Compile-time system search path for libraries
sys_lib_search_path_spec=" /usr/lib/gcc/x86_64-redhat-linux/4.1.2/
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../x86_64-redhat-linux/lib/x86_64-redhat-linux/4.1.2/
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../x86_64-redhat-linux/lib/
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../x86_64-redhat-linux/4.1.2/
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../
/lib/x86_64-redhat-linux/4.1.2/ /lib/
/usr/lib/x86_64-redhat-linux/4.1.2/ /usr/lib/"

Thanks,
Jim

On 9/14/07, Geeky Jim <address@hidden> wrote:
> Hi Ralf,
>
> I am one step closer.  I have partially answered my own question below:
>
> On 9/14/07, Geeky Jim <address@hidden> wrote:
> > Hi Ralf,
> >
> > > Hello Jim,
> > >
> > > * Geeky Jim wrote on Fri, Sep 14, 2007 at 08:00:30PM CEST:
> > > >
> > > > I am having difficulties creating libpqxx 2.6.9 as a 32bit library on 
> > > > 64bit
> > > > x86_64 systems.
> > > > It is packaged using GNU buildtools.  I tried to insert all the flags 
> > > > below
> > > > within the
> > > >  Makefile.am, but the build is very persistent in making
> > >
> > > Try not changing the package at all, but
> > >
> > >   ./configure CPPFLAGS=-m32 LDFLAGS=-m32
> > >   make
> > >
> > > and if that fails, then please post the output of
> > >   ./libtool --config
> > >   ./libtool --version
> > >
> > > and the part of 'make' output where libpqxx.la is created.
> >
> > Your method of passing in the flag parameters via the configure script 
> > works.
> > But the make process failed, because the library path is still pointed to 
> > here
> >
> > -L/usr/lib64
> >
> > (Is there a flag I can override -L/usr/lib64 to -L/usr/lib?)
>
> ./configure CPPFLAGS=-m32 LDFLAGS="-m32 -L/usr/lib"
>
> This resolved most of my library link issues, except the following errors.
> I was able to provide an extra library path to the linker but I don't
> know how to dis-association any 64 bit file references.
>
> /bin/sh ../libtool --tag=CXX   --mode=link g++  -g -O2  -release 2.6.9
> -rpath /home/jim/local/lib  -m32 -L/usr/lib -L/usr/lib64 -o libpqxx.la
> -rpath /home/jim/local/lib binarystring.lo cachedresult.lo
> connection_base.lo connection.lo cursor.lo dbtransaction.lo except.lo
> largeobject.lo nontransaction.lo oldcursor.lo pipeline.lo
> prepared_statement.lo result.lo robusttransaction.lo subtransaction.lo
> tablereader.lo tablestream.lo tablewriter.lo transaction.lo
> transaction_base.lo util.lo  -lpq -lpq
> g++ -shared -nostdlib
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crti.o
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbeginS.o
> .libs/binarystring.o .libs/cachedresult.o .libs/connection_base.o
> .libs/connection.o .libs/cursor.o .libs/dbtransaction.o .libs/except.o
> .libs/largeobject.o .libs/nontransaction.o .libs/oldcursor.o
> .libs/pipeline.o .libs/prepared_statement.o .libs/result.o
> .libs/robusttransaction.o .libs/subtransaction.o .libs/tablereader.o
> .libs/tablestream.o .libs/tablewriter.o .libs/transaction.o
> .libs/transaction_base.o .libs/util.o  -L/usr/lib -L/usr/lib64 -lpq
> -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
> -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64
> -L/lib/../lib64 -L/usr/lib/../lib64 -lstdc++ -lm -lc -lgcc_s
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtendS.o
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crtn.o  -m32
> -Wl,-soname -Wl,libpqxx-2.6.9.so -o .libs/libpqxx-2.6.9.so
> /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/libstdc++.so when searching for
> -lstdc++
> /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/libstdc++.a when searching for
> -lstdc++
> /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/libgcc_s.so when searching for
> -lgcc_s
> /usr/bin/ld: warning: i386:x86-64 architecture of input file
> `/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crti.o' is
> incompatible with i386 output
> /usr/bin/ld: warning: i386:x86-64 architecture of input file
> `/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbeginS.o' is incompatible
> with i386 output
> /usr/bin/ld: warning: i386:x86-64 architecture of input file
> `/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtendS.o' is incompatible
> with i386 output
> /usr/bin/ld: warning: i386:x86-64 architecture of input file
> `/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crtn.o' is
> incompatible with i386 output
> (cd .libs && rm -f libpqxx.so && ln -s libpqxx-2.6.9.so libpqxx.so)
> ar cru .libs/libpqxx.a  binarystring.o cachedresult.o
> connection_base.o connection.o cursor.o dbtransaction.o except.o
> largeobject.o nontransaction.o oldcursor.o pipeline.o
> prepared_statement.o result.o robusttransaction.o subtransaction.o
> tablereader.o tablestream.o tablewriter.o transaction.o
> transaction_base.o util.o
> ranlib .libs/libpqxx.a
> creating libpqxx.la
> (cd .libs && rm -f libpqxx.la && ln -s ../libpqxx.la libpqxx.la)
> make[1]: Leaving directory `/home/jim/Download/libpqxx-2.6.9/src'
> Making all in test
> make[1]: Entering directory `/home/jim/Download/libpqxx-2.6.9/test'
> make[1]: Nothing to be done for `all'.
> make[1]: Leaving directory `/home/jim/Download/libpqxx-2.6.9/test'
> Making all in tools
> make[1]: Entering directory `/home/jim/Download/libpqxx-2.6.9/tools'
> g++ -DHAVE_CONFIG_H -I. -I../include/pqxx -I../include -I../include
> -I/usr/include  -m32  -g -O2  -MT rmlo.o -MD -MP -MF .deps/rmlo.Tpo -c
> -o rmlo.o rmlo.cxx
> mv -f .deps/rmlo.Tpo .deps/rmlo.Po
> /bin/sh ../libtool --tag=CXX   --mode=link g++  -g -O2   -m32
> -L/usr/lib -L/usr/lib64 -o rmlo rmlo.o ../src/libpqxx.la  -lpq -lpq
> mkdir .libs
> g++ -g -O2 -m32 -o .libs/rmlo rmlo.o  -L/usr/lib -L/usr/lib64
> ../src/.libs/libpqxx.so -lpq -Wl,--rpath -Wl,/home/jim/local/lib
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib/crti.o: In
> function `call_gmon_start':
> (.text+0x15): undefined reference to `__gmon_start__'
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib/crti.o: In
> function `call_gmon_start':
> (.text+0x1e): undefined reference to `__gmon_start__'
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/32/crtbegin.o: In function 
> `frame_dummy':
> crtstuff.c:(.text+0x70): undefined reference to `_Jv_RegisterClasses'
> collect2: ld returned 1 exit status
> make[1]: *** [rmlo] Error 1
> make[1]: Leaving directory `/home/jim/Download/libpqxx-2.6.9/tools'
> make: *** [all-recursive] Error 1
>
> Thank you,
> Jim
>