Hi Kristoff, put "-lpthread -lsndfile -lrt" *after* "wav2ambe.c" Greetings, J. --- On Sat, 11/27/10, Kristoff Bonne <kristoff.bonne@xxxxxxxxx> wrote: > From: Kristoff Bonne <kristoff.bonne@xxxxxxxxx> > Subject: using static libraries > To: gcc-help@xxxxxxxxxxx > Date: Saturday, November 27, 2010, 8:13 PM > Hi, > > > I have a question about using static libraries and sofar I > have not found it on the internet-archive. > > > I'm working on a software-package to create > voice-announcement on D-STAR repeaters (radio-amateur > digital voice repeaters). > > I use three external libraries: libsndfile (read the > wav-file), pthread (posix threads) and rt (for timed > interrupts). > > > As the repeaters by default run a version of CentOS where > "libsndfile" is not installed, nor present in the default > repostitory, it needs to be installed from source. > So far, so good. > > However, there are a number of people who also have other > software running on these boxex, including asterisk, who > also uses the libsndfile. (be it, only the run-time > libraries, not the include-files). > > So, to be sure not to create any confict with these > programs and these versions of the libsndfile-library, I > want to include binary versions of the programs in my > package, using statically linking (read: no external > libraries needed, so no change of conflict). > > > However, when I try to compile my programs using the > "-static" option, it looks like the linker cannot reference > to the external functions: > > $ gcc -static -L /usr/lib/ -o wav2ambe -lpthread -lsndfile > -lrt wav2ambe.c > /tmp/ccAUZGl5.o: In function `main': > wav2ambe.c:(.text+0x11ff): undefined reference to > `sf_open' > wav2ambe.c:(.text+0x1593): undefined reference to > `pthread_create' > wav2ambe.c:(.text+0x1666): undefined reference to > `timer_create' > wav2ambe.c:(.text+0x16f8): undefined reference to > `timer_settime' > wav2ambe.c:(.text+0x1782): undefined reference to > `sf_read_short' > wav2ambe.c:(.text+0x18ff): undefined reference to > `timer_settime' > collect2: ld returned 1 exit status > > The strange thing is that, when I run "strace -f", I do see > that the .a files (/usr/lib/libpthread.a, > /usr/lib/libsndfile.a and /usr/lib/librt.a) are read!!! > > So am I doing something wrong here? > > > > The program-code can be found here: > http://villazeebries.krbonne.net/dstar/voice-announce/ > > The blog about the program is here: > http://villazeebries.krbonne.net/hamstuff/ > > > Any info greatly appriciated! > > Cheerio! > Kr. Bonne > >
