How to include *.so file in makefile

Question

For a program I was linking the static glibc library (which I modified). My makefile looks something like this.

CXX = g++ CXXFILES = main.c CXXFLAGS = -g -o prog -D_GNU_SOURCE LIBS = ../../nptl/libpthread.a ../../libc.a -lpthread all: $(CXX) $(CXXFILES) $(LIBS) $(CXXFLAGS)

However, instead of using the static *.a files, I now want to use the dynamic shared object *.so files. Is it enough to replace the *.a files by *.so files in the makefile. If not what is the correct way of doing so. I tried to simply replace the *.a with *.so files in the makefile, but it seems like when I do that the program uses the original glibc (rather than my modified one).

Don't you just need to compile as normal, and then set your LD_PRELOAD before you run? stackoverflow.com/questions/426230/what-is-the-ld-preload-trick — Oliver Charlesworth
– Oliver Charlesworth, Commented May 21, 2012 at 16:37
Have a look at network-theory.co.uk/docs/gccintro/gccintro_25.html. It should help you out. — Dan Armstrong
– Dan Armstrong, Commented May 21, 2012 at 16:39
@MetallicPriest: In which case, you should edit your question so that it details all of your constraints. — Oliver Charlesworth
– Oliver Charlesworth, Commented May 21, 2012 at 16:44
Read tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html — MetallicPriest
– MetallicPriest, Commented May 21, 2012 at 16:45

greg · Accepted Answer · 2012-05-21 16:39:38Z

If you don't want to use the standard libraries, you might need the -nostdlib flag. In addition, if you want to dynamically link libraries, you need to tell the linker where they are. -L/dir/containing -lc.

If you don't want to set a LD_LIBRARY_PATH when executing, you'll need to set rpath, -Wl,--rpath=/path/containing.

Points for pointing out what --rpath does. So that's why so many projects I've downloaded require LD_LIBRARY_PATH in their build.

Collectives™ on Stack Overflow

How to include *.so file in makefile

1 Answer 1

1 Comment

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Linked

Related