[Bug classpath/69679] New: Check for the Jack library as well when building with --enable-dssi

[gnu_andrew at member dot fsf.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69679

            Bug ID: 69679
           Summary: Check for the Jack library as well when building with
                    --enable-dssi
           Product: classpath
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: classpath
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gnu_andrew at member dot fsf.org
  Target Milestone: ---

configure only checks for jack.h when checking for the Jack audio connection
kit:

AC_ARG_ENABLE([dssi],
              [AS_HELP_STRING(--disable-dssi,compile DSSI providers (enable by
--enable-dssi) [default=yes])],
              [case "${enableval}" in
                yes) COMPILE_DSSI=yes ;;
                no) COMPILE_DSSI=no ;;
                *) COMPILE_DSSI=yes ;;
              esac],
              [COMPILE_DSSI=no
               AC_CHECK_HEADERS([dssi.h], [
                 AC_CHECK_HEADERS([jack/jack.h],COMPILE_DSSI=yes)])])

This causes issues on multilib systems where the header is there, but the
library may not be there for all (e.g. there's an x86_64 library but not x86
one). We should do a more through check, ideally using pkg-config which Jack
now supports.