Hi Devin,
in include/my_mod/api.h you'll find a #define like this
#define MY_MOD_API __STUFF
use MY_MOD_API in front of the classes and free-standing
functions you want to export, like
uint32_t MY_MOD_API crc32(unsigned int, void const*, unsigned
long);
Best regards,
Marcus
PS: having written your own CRC is cool, but you can probably use
one of the many existing implementations!
On 18.11.2016 17:15, devin kelly wrote:
Hello,
I've created my own GR module with GR mod tool. I
added two files
include/my_mod/crc.h
lib/crc.cc
And I can use the functions (crc32 for example) in those
files perfectly fine within classes that wind up in
libgnuradio-my_mod.so. However, I can't use the
functions in crc.h/crc.cc in external applications that
link to libgnuradio-my_mod.so.
The correct symbols exist in libgnuradio-my_mod.so however
the symbols are local, not global.
$ readelf -a lib/libgnuradio-my_mod.so | grep crc32
192: 0000000000228440 1024 OBJECT LOCAL DEFAULT 24
crc32_tab
426: 000000000000f3f0 52 FUNC LOCAL DEFAULT 11
_Z5crc32jPKvm
How can I expose crc32 to the outside world? Do I have to
make the change in one of my CMakeLists.txt files or one of
the source files? The function (crc32) isn't a static.
Thanks for any help,
Devin
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