On Fri, Jun 28, 2019, 8:40 AM Vaibhav Gupta <vaibhavgupt...@gmail.com> wrote:
> > > On Fri, Jun 28, 2019, 5:57 PM Joel Sherrill <j...@rtems.org> wrote: > >> You need to add the library to the gcc command that links the program. If >> the libndbm is in the library search path, add -lndbm. >> >> I don't recall the exact Makefile variable to set for this to show up. >> Look at the paranoia sample. It should be doing this with -lm. >> >> --joel >> > Okay, I will try this! > The following web page is a pretty good description of building a library using a native GCC and linking it into a program. It includes some of the theory going on so this might help you. https://www.cs.swarthmore.edu/~newhall/unixhelp/howto_C_libraries.html Guys.. this comes up periodically, even though this is really basic tool usage to me, is this something we should provide some guidance on? --joel > >> On Fri, Jun 28, 2019, 8:12 AM Vaibhav Gupta <vaibhavgupt...@gmail.com> >> wrote: >> >>> Hello, >>> . >>> Status: >>> >>> 1. I have ported ndbm in newlib. When compiled newlib-cygwin, >>> function symbols were generated. Created patch. >>> 2. Applied the patch to RSB and rebuild toolchain. Generated ndbm.h >>> in 5/sparc-rtems5/include directory. >>> >>> Blocker: >>> >>> 1. I made a raw program which calls dbm_open, dbm_close, dbm_store, >>> dbm_fetch. >>> 2. When I run 'make -j 2', in erc32 directory, it shows undefined >>> reference to those functions. >>> >>> https://github.com/VARoDeK/rtems/compare/test_ndbm_presence_02 >>> . >>> home/varodek/development/rtems/5/lib/gcc/sparc-rtems5/7.4.1/../../../../sparc-rtems5/bin/ld: >>> psxinttypes01/psxinttypes01-init.o: in function `Init': >>> /home/varodek/development/rtems/kernel/rtems/c/src/../../testsuites/psxtests/psxinttypes01/init.c:231: >>> undefined reference to `dbm_open' >>> /home/varodek/development/rtems/5/lib/gcc/sparc-rtems5/7.4.1/../../../../sparc-rtems5/bin/ld: >>> /home/varodek/development/rtems/kernel/rtems/c/src/../../testsuites/psxtests/psxinttypes01/init.c:232: >>> undefined reference to `dbm_store' >>> /home/varodek/development/rtems/5/lib/gcc/sparc-rtems5/7.4.1/../../../../sparc-rtems5/bin/ld: >>> /home/varodek/development/rtems/kernel/rtems/c/src/../../testsuites/psxtests/psxinttypes01/init.c:236: >>> undefined reference to `dbm_fetch' >>> /home/varodek/development/rtems/5/lib/gcc/sparc-rtems5/7.4.1/../../../../sparc-rtems5/bin/ld: >>> /home/varodek/development/rtems/kernel/rtems/c/src/../../testsuites/psxtests/psxinttypes01/init.c:239: >>> undefined reference to `dbm_close' >>> collect2: error: ld returned 1 exit status >>> make[5]: *** [Makefile:7679: psxinttypes01.exe] Error 1 >>> make[5]: Leaving directory >>> '/home/varodek/development/rtems/kernel/erc32/sparc-rtems5/c/erc32/testsuites/psxtests' >>> make[4]: *** [Makefile:663: psxtests] Error 2 >>> make[4]: *** Waiting for unfinished jobs.... >>> . >>> . >>> . >>> Maybe I have compiled it incorrectly, please verify. >>> >>> 1. ndbm port: https://github.com/VARoDeK/newlib/compare/port_ndbm >>> 2. RSB patch: >>> https://github.com/VARoDeK/rsb/compare/newlib_ndbm_rsb_patch_01 >>> >>> Vaibhav Gupta >>> >>
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