compiling with shared libraries

Wed Dec 20 17:56:00 GMT 2006

Per Bothner writes:
 > Andrew Haley wrote:
 > > I think I may know what causes this. Please try one experiment:
 > > compile everything PIC, including the executable.
 > 
 > That worked. Thanks! The key is that the jvgenmain-generated .o file
 > also needs to be compiled with -fPIC. Would it make sense to make -fPIC
 > the default when compiling that .o file?
Probably. The cause of the problem is that only PIC code may be
linked against libraries linked with -Bsymbolic, but -Bsymbolic is
required for correct resolution of Java name spaces. It's a weird
one, for sure.
I guess, at least, we need a FAQ for this.
 > I then had to figure out how to coax automake+libtool to add the -fPIC.
 > My quick-and-dirty fix:
 > AC_DISABLE_STATIC (in configure.in)
 > AM_CFLAGS = -fPIC
 > 
 > And add $(AM_CLFAGS) to the command to link the executable.
Andrew.