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 > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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