Re: [boost] program_options: undefined behaviour seems unavoidable

From: Oliver Kullmann (O.Kullmann_at_[hidden])
Date: 2004-12-07 11:56:02

Hi Jeff,

> > 3) I'm using g++ version 3.4.3, and I compiled Boost with this 
> > compiler, but to whatever library from Boost I link, I get warning 
> > messages like the above; another example
> > 
> > > g++ calender.o -lboost_date_time-gcc
> > /usr/bin/ld: warning: libstdc++.so.5, needed by 
> > /usr/local/lib/gcc/i686-pc-linux-
> > gnu/3.4.3/../../../libboost_date_time-gcc.so, may conflict with libstdc++.so.6
> 
> Looks to me that there is a mismatch in the environment -- you are compiling
> boost with one version of libstdc++ and then linking against another.
> 
> > What's the problem here?! (Linking in general seems in Boost not so 
> > easy, and thus it would be good to have a bit more documentation on 
> > this. For example in program_options I couldn't find any hint how to 
> > compile it.)
> > 
> > Hope someone can shed light on these issues (as I said, for all what 
> > I can see, there seems to be a serious problem with program_options).
> 
> Have you read this?
> 
> http://www.boost.org/more/getting_started.html#Build_Install
>

yes, I read it, but the main question seems to me:

What happens if Boost was already installed on the system?
Is some form of "uninstall" necessary? (seems not to be the case?!)

Could this be the problem here?!

To be on the safe side, I've built Boost again, but exactly the same problem:
Always the linker warnings, and every program crashes (so it had nothing to do
with the program_options library; fortunately it always crashes immediately, so
the problem is always visible). Below I've copied the relevant build commands and
other information.

Thanks for your help!

Oliver

----------------------------------------------------------------------------------------

Compiler versions:

kullmann_at_csltok:/usr/local/lib> g++ -v
Lese Spezifikationen von /usr/local/lib/gcc/i686-pc-linux-gnu/3.4.3/specs
Konfiguriert mit: /h/21/GemeinsameBasis/GCC/gcc-3.4.3/configure --enable-threads=posix --enable-languages=c,c++,f77,objc,java,ada --enable-shared
Thread-Modell: posix
gcc-Version 3.4.3
kullmann_at_csltok:/usr/local/lib> gcc -v
Lese Spezifikationen von /usr/local/lib/gcc/i686-pc-linux-gnu/3.4.3/specs
Konfiguriert mit: /h/21/GemeinsameBasis/GCC/gcc-3.4.3/configure --enable-threads=posix --enable-languages=c,c++,f77,objc,java,ada --enable-shared
Thread-Modell: posix
gcc-Version 3.4.3

-------------------------------

Building Boost:

kullmann_at_csltok:~/C++> tar -xzf boost_1_32_0.tar.gz
kullmann_at_csltok:~/C++/boost_1_32_0/tools/build/jam_src> ./build.sh
kullmann_at_csltok:~/C++/boost_1_32_0> su
csltok:/home/kullmann/C++/boost_1_32_0 # tools/build/jam_src/bin.linuxx86/bjam "-sTOOLS=gcc" install

-------------------------------

As an example, the date_time link-libraries before the build:

kullmann_at_csltok:/usr/local/lib> ls -l libboost_date_time-gcc*
-rw-r--r--    1 kullmann users       26592 2004-09-17 07:30 libboost_date_time-gcc-1_31.a
lrwxrwxrwx    1 kullmann users          37 2004-09-17 07:41 libboost_date_time-gcc-1_31.so -> libboost_date_time-gcc-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users       19500 2004-09-17 07:30 libboost_date_time-gcc-1_31.so.1.31.0
-rw-r--r--    2 root     root        94536 2004-12-03 02:51 libboost_date_time-gcc-1_32.a
lrwxrwxrwx    1 root     root           37 2004-12-03 02:51 libboost_date_time-gcc-1_32.so -> libboost_date_time-gcc-1_32.so.1.32.0
-rwxr-xr-x    2 root     root        57732 2004-12-03 02:51 libboost_date_time-gcc-1_32.so.1.32.0
-rw-r--r--    2 root     root        94536 2004-12-03 02:51 libboost_date_time-gcc.a
-rw-r--r--    1 kullmann users      198072 2004-09-17 07:30 libboost_date_time-gcc-d-1_31.a
lrwxrwxrwx    1 kullmann users          39 2004-09-17 07:41 libboost_date_time-gcc-d-1_31.so -> libboost_date_time-gcc-d-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users      167296 2004-09-17 07:30 libboost_date_time-gcc-d-1_31.so.1.31.0
-rw-r--r--    2 root     root       437712 2004-12-03 02:51 libboost_date_time-gcc-d-1_32.a
lrwxrwxrwx    1 root     root           39 2004-12-03 02:51 libboost_date_time-gcc-d-1_32.so -> libboost_date_time-gcc-d-1_32.so.1.32.0
-rwxr-xr-x    2 root     root       364163 2004-12-03 02:51 libboost_date_time-gcc-d-1_32.so.1.32.0
-rw-r--r--    2 root     root       437712 2004-12-03 02:51 libboost_date_time-gcc-d.a
-rwxr-xr-x    2 root     root       364163 2004-12-03 02:51 libboost_date_time-gcc-d.so
-rw-r--r--    1 kullmann users       26592 2004-09-17 07:30 libboost_date_time-gcc-mt-1_31.a
lrwxrwxrwx    1 kullmann users          40 2004-09-17 07:41 libboost_date_time-gcc-mt-1_31.so -> libboost_date_time-gcc-mt-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users       19524 2004-09-17 07:30 libboost_date_time-gcc-mt-1_31.so.1.31.0
-rw-r--r--    2 root     root        94520 2004-12-03 02:51 libboost_date_time-gcc-mt-1_32.a
lrwxrwxrwx    1 root     root           40 2004-12-03 02:51 libboost_date_time-gcc-mt-1_32.so -> libboost_date_time-gcc-mt-1_32.so.1.32.0
-rwxr-xr-x    2 root     root        58004 2004-12-03 02:51 libboost_date_time-gcc-mt-1_32.so.1.32.0
-rw-r--r--    2 root     root        94520 2004-12-03 02:51 libboost_date_time-gcc-mt.a
-rw-r--r--    1 kullmann users      201546 2004-09-17 07:30 libboost_date_time-gcc-mt-d-1_31.a
lrwxrwxrwx    1 kullmann users          42 2004-09-17 07:41 libboost_date_time-gcc-mt-d-1_31.so -> libboost_date_time-gcc-mt-d-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users      169794 2004-09-17 07:30 libboost_date_time-gcc-mt-d-1_31.so.1.31.0
-rw-r--r--    2 root     root       441216 2004-12-03 02:51 libboost_date_time-gcc-mt-d-1_32.a
lrwxrwxrwx    1 root     root           42 2004-12-03 02:51 libboost_date_time-gcc-mt-d-1_32.so -> libboost_date_time-gcc-mt-d-1_32.so.1.32.0
-rwxr-xr-x    2 root     root       370109 2004-12-03 02:51 libboost_date_time-gcc-mt-d-1_32.so.1.32.0
-rw-r--r--    2 root     root       441216 2004-12-03 02:51 libboost_date_time-gcc-mt-d.a
-rwxr-xr-x    2 root     root       370109 2004-12-03 02:51 libboost_date_time-gcc-mt-d.so
-rwxr-xr-x    2 root     root        58004 2004-12-03 02:51 libboost_date_time-gcc-mt.so
-rwxr-xr-x    2 root     root        57732 2004-12-03 02:51 libboost_date_time-gcc.so

---------------------------------

And after the build:

kullmann_at_csltok:/usr/local/lib> ls -l libboost_date_time-gcc*
-rw-r--r--    1 kullmann users       26592 2004-09-17 07:30 libboost_date_time-gcc-1_31.a
lrwxrwxrwx    1 kullmann users          37 2004-09-17 07:41 libboost_date_time-gcc-1_31.so -> libboost_date_time-gcc-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users       19500 2004-09-17 07:30 libboost_date_time-gcc-1_31.so.1.31.0
-rw-r--r--    2 root     root        94536 2004-12-06 23:06 libboost_date_time-gcc-1_32.a
lrwxrwxrwx    1 root     root           37 2004-12-06 23:06 libboost_date_time-gcc-1_32.so -> libboost_date_time-gcc-1_32.so.1.32.0
-rwxr-xr-x    2 root     root        57732 2004-12-06 23:06 libboost_date_time-gcc-1_32.so.1.32.0
-rw-r--r--    2 root     root        94536 2004-12-06 23:06 libboost_date_time-gcc.a
-rw-r--r--    1 kullmann users      198072 2004-09-17 07:30 libboost_date_time-gcc-d-1_31.a
lrwxrwxrwx    1 kullmann users          39 2004-09-17 07:41 libboost_date_time-gcc-d-1_31.so -> libboost_date_time-gcc-d-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users      167296 2004-09-17 07:30 libboost_date_time-gcc-d-1_31.so.1.31.0
-rw-r--r--    2 root     root       437712 2004-12-06 23:06 libboost_date_time-gcc-d-1_32.a
lrwxrwxrwx    1 root     root           39 2004-12-06 23:06 libboost_date_time-gcc-d-1_32.so -> libboost_date_time-gcc-d-1_32.so.1.32.0
-rwxr-xr-x    2 root     root       364163 2004-12-06 23:06 libboost_date_time-gcc-d-1_32.so.1.32.0
-rw-r--r--    2 root     root       437712 2004-12-06 23:06 libboost_date_time-gcc-d.a
-rwxr-xr-x    2 root     root       364163 2004-12-06 23:06 libboost_date_time-gcc-d.so
-rw-r--r--    1 kullmann users       26592 2004-09-17 07:30 libboost_date_time-gcc-mt-1_31.a
lrwxrwxrwx    1 kullmann users          40 2004-09-17 07:41 libboost_date_time-gcc-mt-1_31.so -> libboost_date_time-gcc-mt-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users       19524 2004-09-17 07:30 libboost_date_time-gcc-mt-1_31.so.1.31.0
-rw-r--r--    2 root     root        94520 2004-12-06 23:06 libboost_date_time-gcc-mt-1_32.a
lrwxrwxrwx    1 root     root           40 2004-12-06 23:06 libboost_date_time-gcc-mt-1_32.so -> libboost_date_time-gcc-mt-1_32.so.1.32.0
-rwxr-xr-x    2 root     root        58004 2004-12-06 23:06 libboost_date_time-gcc-mt-1_32.so.1.32.0
-rw-r--r--    2 root     root        94520 2004-12-06 23:06 libboost_date_time-gcc-mt.a
-rw-r--r--    1 kullmann users      201546 2004-09-17 07:30 libboost_date_time-gcc-mt-d-1_31.a
lrwxrwxrwx    1 kullmann users          42 2004-09-17 07:41 libboost_date_time-gcc-mt-d-1_31.so -> libboost_date_time-gcc-mt-d-1_31.so.1.31.0
-rwxr-xr-x    1 kullmann users      169794 2004-09-17 07:30 libboost_date_time-gcc-mt-d-1_31.so.1.31.0
-rw-r--r--    2 root     root       441216 2004-12-06 23:06 libboost_date_time-gcc-mt-d-1_32.a
lrwxrwxrwx    1 root     root           42 2004-12-06 23:06 libboost_date_time-gcc-mt-d-1_32.so -> libboost_date_time-gcc-mt-d-1_32.so.1.32.0
-rwxr-xr-x    2 root     root       370109 2004-12-06 23:06 libboost_date_time-gcc-mt-d-1_32.so.1.32.0
-rw-r--r--    2 root     root       441216 2004-12-06 23:06 libboost_date_time-gcc-mt-d.a
-rwxr-xr-x    2 root     root       370109 2004-12-06 23:06 libboost_date_time-gcc-mt-d.so
-rwxr-xr-x    2 root     root        58004 2004-12-06 23:06 libboost_date_time-gcc-mt.so
-rwxr-xr-x    2 root     root        57732 2004-12-06 23:06 libboost_date_time-gcc.so

----------------------------------

The linking warning:

g++ -c -o TimeHandling_Applications_DaysDifference.o  TimeHandling_Applications_DaysDifference.cpp
g++ -o TimeHandling_Applications_DaysDifference  TimeHandling_Applications_DaysDifference.o -lboost_date_time-gcc
/usr/bin/ld: warning: libstdc++.so.5, needed by /usr/local/lib/gcc/i686-pc-linux-gnu/3.4.3/../../../libboost_date_time-gcc.so, may conflict with libstdc++.so.6

-----------------------------------

Crash not shown (doesn't seem to be informative).