> Hello all, > > Any help on this would be very much appreciated as I am completely stuck. > > I am having trouble repackaging a shared library using the Automake, > libtool, and Autoconf. I have been able to successfully build a > distribution that installs the shared library correctly, but when I try to > compile a test program that uses the library, the following error occurs: > > [jks@saba newsmdi]$ gcc -g -lsmdi -o test firsttest.c > /usr/local/lib/libsmdi.so: undefined reference to `pthread_create' > collect2: ld returned 1 exit status > > The shared library uses functions from the pthreads library, so I tried > adding LDADD= pthread, libsmdi_la_LTLDADD = pthread, and some other > variations to my Makefile.am, and none of them worked.
I think you should try: gcc -g -lsmdi -lpthread -o test firsttest.c > > It seems that the shared library is being built but not properly linked to > the other libraries that it depends on. > > Will someone please let me know what I need to do to portably link to an > existing library (Makefile.am and configure.in listed below). > > Thanks in advance for the help; I have looked through the docs and searched > the net with no luck. > > Thanks, > > John > > ----- Makefile.am: > > ## Process this file with automake to produce Makefile.in > > lib_LTLIBRARIES = libsmdi.la > libsmdi_la_SOURCES = smdi.c aspi.linux.c > libsmdi_la_LDFLAGS = -version-info 0:5:0 > libsmdi_la_LTLDADD = pthread > > include_HEADERS = aspi.h smdi.h > > ----- configure.in > > dnl Process this file with autoconf to produce a configure script. > > dnl From Autoconf manual: > > dnl Autoconf requirements > dnl AC_INIT(package, version, bug-report-address) > dnl information on the package > dnl checks for programs > dnl checks for libraries > dnl checks for header files > dnl checks for types > dnl checks for structures > dnl checks for compiler characteristics > dnl checks for library functions > dnl checks for system services > dnl AC_CONFIG_FILES([file...]) > dnl AC_OUTPUT > > AC_INIT(aspi.linux.c) > AM_INIT_AUTOMAKE(opensmdi, 0.0.5) > AM_PROG_LIBTOOL > dnl Checks for programs. > > dnl Checks for libraries. > > dnl Checks for header files. > AC_HEADER_STDC > AC_CHECK_HEADERS(sys/file.h) > > dnl Checks for typedefs, structures, and compiler characteristics. > > dnl Checks for library functions. > AC_FUNC_MEMCMP > > AC_OUTPUT(Makefile)
