All different versions of libnl can cohexist on a system (libnl-1, libnl-2, libnl-3.0, libnl-3.1 and libnl-3.2). When multiple versions are installed only link against the highest versioned one, otherwise there might be unpredictable results (including segmentation faults). Program received signal SIGSEGV, Segmentation fault. 0x00007ffff7bd7f7d in genl_unregister () from /usr/lib64/libnl-genl.so.3 (gdb) where #0 0x00007ffff7bd7f7d in genl_unregister () from /usr/lib64/libnl-genl.so.3 #1 0x00007ffff7de9c17 in _dl_fini () at dl-fini.c:254 #2 0x00007ffff7433c01 in __run_exit_handlers (status=0, listp=0x7ffff77b06b8, run_list_atexit=run_list_atexit@entry=true) at exit.c:78 #3 0x00007ffff7433c85 in __GI_exit (status=<optimized out>) at exit.c:100 #4 0x00007ffff741ba4c in __libc_start_main (main=0x401c20 <main>, argc=1, ubp_av=0x7fffffffe368, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe358) at libc-start.c:258 #5 0x0000000000401f61 in _start () at ../sysdeps/x86_64/elf/start.S:113 This is the simplest (v1) patch which fixes the Makefile. A slightly more elaborate modification (v2) also allows to manually select the desired nl library version by passing the appropriate NLLIBNAME, CFLAGS and LIBS variables to make. Signed-off-by: Guido Trentalancia <guido@xxxxxxxxxxxxxxxx> --- Makefile | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- iw-3.4/Makefile 2012-03-29 11:05:04.000000000 +0200 +++ iw-3.4-multiple-libnl-installations/Makefile 2012-06-02 16:53:25.621169916 +0200 @@ -33,30 +33,30 @@ NLLIBNAME = libnl-1 endif ifeq ($(NL2FOUND),Y) -CFLAGS += -DCONFIG_LIBNL20 -LIBS += -lnl-genl +CFLAGS = -DCONFIG_LIBNL20 +LIBS = -lnl-genl NLLIBNAME = libnl-2.0 endif ifeq ($(NL3xFOUND),Y) # libnl 3.2 might be found as 3.2 and 3.0 NL3FOUND = N -CFLAGS += -DCONFIG_LIBNL30 -LIBS += -lnl-genl-3 +CFLAGS = -DCONFIG_LIBNL30 +LIBS = -lnl-genl-3 NLLIBNAME = libnl-3.0 endif ifeq ($(NL3FOUND),Y) -CFLAGS += -DCONFIG_LIBNL30 -LIBS += -lnl-genl +CFLAGS = -DCONFIG_LIBNL30 +LIBS = -lnl-genl NLLIBNAME = libnl-3.0 endif # nl-3.1 has a broken libnl-gnl-3.1.pc file # as show by pkg-config --debug --libs --cflags --exact-version=3.1 libnl-genl-3.1;echo $? ifeq ($(NL31FOUND),Y) -CFLAGS += -DCONFIG_LIBNL30 -LIBS += -lnl-genl +CFLAGS = -DCONFIG_LIBNL30 +LIBS = -lnl-genl NLLIBNAME = libnl-3.1 endif -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
