Prepare shared one with 32bit opsec libraries and shared one should load by 64bit exe

nagendrar · 12-02-2014, 03:09 AM

HI,
currently opsec libraries are available with 32bit version only.

Here my problem is,

I prepared shared library on 64bit machine with "-m32" option which links to 32 bit opsec library.

But this newly built shared library is failed to load with 64bit executable and giving "wrong ELF class: ELFCLASS32" error.

Please help me.
How would I build shared lib with 32bit opsec library on 64bit machine and How would this newly built shared lib loaded by 64bit executable? (In Linux).

-regards
Nagendra Rednam

NevemTeve · 12-02-2014, 03:23 AM

Replace -m32 with -m64.

Eg:

Code:

# Makefile

MODS=a b c

all: obj-64/libabc.la obj-32/libabc.la

obj-64/libabc.la: $(foreach m,$(MODS),obj-64/$m.lo)
        libtool --mode=link gcc -rpath /usr/local/lib64 -m64 ${LDFLAGS} -o $@ $^

obj-32/libabc.la: $(foreach m,$(MODS),obj-32/$m.lo)
        libtool --mode=link gcc -rpath /usr/local/lib   -m32 ${LDFLAGS} -o $@ $^

obj-64/%.lo: %.c
        libtool --mode=compile gcc -m64 ${CPPFLAGS} ${CFLAGS} -o $@ -c $<

obj-32/%.lo: %.c
        libtool --mode=compile gcc -m32 ${CPPFLAGS} ${CFLAGS} -o $@ -c $<