Re: using -static

[Andrew Haley <aph at redhat dot com>]

Marco Trudel writes:
 > Andrew Haley wrote:
 > > Marco Trudel writes:
 > > 
 > >  > Do the following two configuration create the same executables?
 > >  > 1. shared GCJ, compiling with "gcj -static"
 > >  > 2. disable-shared GCJ, compiling with just "gcj"
 > > 
 > > Should do.
 > 
 > Cool :-)
 > 
 > >  > Both will create static executables, but the first one will print some 
 > >  > warnings which do not occur with the second configuration.
 > > 
 > > Why are you keeping these warnings secret from us?
 > 
 > 
 > Well, I assumed that they either create different executables or the 
 > warnings are known. So I was too lazy to invest the 5 minutes... Sorry 
 > about that.
 > 
 > But here we go:
 > 
 > /home/Marco/Desktop/compile-lin-lin/gcc-4.2.0-lin-lin/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../libgcj.a(ltdl.o): 
 > In function `sys_dl_open':
 > /home/Marco/.eclipse_workspace/GCC-source/libjava/libltdl/ltdl.c:1114: 
 > warning: Using 'dlopen' in statically linked applications requires at 
 > runtime the shared libraries from the glibc version used for linking
 > /home/Marco/Desktop/compile-lin-lin/gcc-4.2.0-lin-lin/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../libgcj.a(natSystemProperties.o): 
 > In function `getpwuid_adaptor<__uid_t, passwd, char, size_t>':
 > /home/Marco/.eclipse_workspace/GCC-source/libjava/gnu/classpath/natSystemProperties.cc:97: 
 > warning: Using 'getpwuid_r' in statically linked applications requires 
 > at runtime the shared libraries from the glibc version used for linking
 > /home/Marco/Desktop/compile-lin-lin/gcc-4.2.0-lin-lin/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../libgcj.a(natInetAddress.o): 
 > In function `hidden alias for JArray<java::net::InetAddress*>* 
 > java::net::InetAddress::lookup(java::lang::String*, 
 > java::net::InetAddress*, bool)':
 > java/net/natInetAddress.cc:206: warning: Using 'gethostbyaddr_r' in 
 > statically linked applications requires at runtime the shared libraries 
 > from the glibc version used for linking
 > java/net/natInetAddress.cc:153: warning: Using 'gethostbyname_r' in 
 > statically linked applications requires at runtime the shared libraries 
 > from the glibc version used for linking
 > 
 > This warnings occur when compiling a simple System.out.println("hello") 
 > application with "-static".

That's interesting.  It tells you that you really shouldn't link
statically against libc, but I don't think that's news.

Andrew.