Quanah Gibson-Mount wrote: > --On Wednesday, June 12, 2013 5:57 PM +0200 Michael StrÃder > <email@example.com> wrote: > >> On Wed, 12 Jun 2013 08:35:37 -0700 Quanah Gibson-Mount <firstname.lastname@example.org> >> wrote >> >>> --On Wednesday, June 12, 2013 4:59 PM +0200 Michael StrÃder >>> <email@example.com> wrote: >>> >>> >> I would note there are issues with the way in which Debian builds BDB >>> >> as well. >>> > >>> > Is this still true today? Which issues are this in detail? >>> >>> Yes, it is still true today. They do not set the >>> --with-mutex=POSIX/pthreads flag. >> >> We looked at the db4.8 source package. >> It seems they used configure option >> >> --with-mutex=POSIX/pthreads/library >> >> See build log here: >> https://buildd.debian.org/status/fetch.php?pkg=db4.8&arch=amd64&ver=4.8.3 >> 0-2&stamp=1283126079 >> >> Anything else which could be missing? > > Yep. --enable-posixmutexes. Those two options need to go together. I have to nitpick here: Analyzing db-4.8.30/dist/configure shows that option --enable-posixmutexes sets the variable db_cv_posixmutexes which in turn sets db_cv_mutex=posix_only if db_cv_mutex is "no" before. If --with-mutex=POSIX/pthreads/library is used db_cv_mutex is set to this value. So it seems to me that --enable-posixmutexes is a no-op if --with-mutex=POSIX/pthreads/library was set explicitly. Simply invoking: $ cd build_unix $ ../dist/configure --with-mutex=POSIX/pthreads/library [..] checking if --enable-posixmutexes option specified... no [..] checking if --with-mutex=MUTEX option specified... POSIX/pthreads/library [..] checking for mutexes... (cached) POSIX/pthreads/library checking pthread.h usability... yes checking pthread.h presence... yes checking for pthread.h... yes checking for main in -lpthread... yes [..] checking for pthread_self... yes checking for pthread_yield... yes [..] And I examined the differences of all generated files under build_unix/ if --enable-posixmutexes is set or not - of course always setting --with-mutex=POSIX/pthreads/library): There are no significant differences. While I personally would prefer to explicitly mention --enable-posixmutexes just for completeness it technically does not seem to be a difference. So to me the Debian package libdb4.8 is not responsible for possible hangs. Am I overlooking something? Ciao, Michael.
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