[Boost-build] Runtime dependency on stdlibc++ for C code

From: Anthony Novatsis (anthonynovatsis_at_[hidden])
Date: 2007-12-19 05:02:11

Hello All,

I have an application written in C compiled with Boost.Build and the
output executable has a runtime dependency on libstdc++.  See the
simple example below.

main.c:

int main(int argc, char* argv[])
{
    return 0;
}

Jamfile:

exe test : main.c : : ;

Executing bjam (linker command line: "g++-4.1"    -o
"bin/gcc-4.1/debug/test" -Wl,--start-group "bin/gcc-4.1/debug/main.o"
  -Wl,--end-group -g) produces an executable with the following
dependencies:

ldd ./bin/gcc-4.1/debug/test
        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7e92000)
        libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7e6d000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7e61000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7d17000)
        /lib/ld-linux.so.2 (0xb7f94000)

After re-running the link step manually and replacing g++-4.1 with
gcc-4.1, the output executable has the following dependencies:

ldd ./bin/gcc-4.1/debug/test
        linux-gate.so.1 =>  (0xffffe000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7e54000)
        /lib/ld-linux.so.2 (0xb7fad000)

I need to eliminate the dependency on libstdc++ as the application
will eventually run on a target where there is no C++ runtime.  Is
there any way to configure Boost Build to use gcc instead of g++.
Perhaps by configuring the C and C++ compiler separately or some other
work around ?  Or am I doing something else wrong ?

Thanks in advance.

Anthony