michael@0: #!/bin/sh
michael@0: # libevent rpcgen_wrapper.sh
michael@0: # Transforms event_rpcgen.py failure into success for make, only if
michael@0: # regress.gen.c and regress.gen.h already exist in $srcdir.  This
michael@0: # is needed for "make distcheck" to pass the read-only $srcdir build,
michael@0: # as with read-only sources fresh from tarball, regress.gen.[ch] will
michael@0: # be correct in $srcdir but unwritable.  This previously triggered
michael@0: # Makefile.am to create stub regress.gen.c and regress.gen.h in the
michael@0: # distcheck _build directory, which were then detected as leftover
michael@0: # files in the build tree after distclean, breaking distcheck.
michael@0: # Note that regress.gen.[ch] are not in fresh git clones, making
michael@0: # working Python a requirement for make distcheck of a git tree.
michael@0: 
michael@0: exit_updated() {
michael@0:     echo "Updated ${srcdir}\regress.gen.c and ${srcdir}\regress.gen.h"
michael@0:     exit 0
michael@0: }
michael@0: 
michael@0: exit_reuse() {
michael@0:     echo "event_rpcgen.py failed, ${srcdir}\regress.gen.\[ch\] will be reused." >&2
michael@0:     exit 0
michael@0: }
michael@0: 
michael@0: exit_failed() {
michael@0:     echo "Could not generate regress.gen.\[ch\] using event_rpcgen.sh" >&2
michael@0:     exit 1
michael@0: }
michael@0: 
michael@0: if [ -x /usr/bin/python2 ] ; then
michael@0:   PYTHON2=/usr/bin/python2
michael@0: elif [ "x`which python2`" != x ] ; then
michael@0:   PYTHON2=python2
michael@0: else
michael@0:   PYTHON2=python
michael@0: fi
michael@0: 
michael@0: srcdir=$1
michael@0: srcdir=${srcdir:-.}
michael@0: ${PYTHON2} ${srcdir}/../event_rpcgen.py ${srcdir}/regress.rpc
michael@0: case "$?" in
michael@0:  0)
michael@0:     exit_updated
michael@0:     ;;
michael@0:  *)
michael@0:     test -r ${srcdir}/regress.gen.c -a -r ${srcdir}/regress.gen.h && \
michael@0: 	exit_reuse
michael@0:     exit_failed
michael@0:     ;;
michael@0: esac