|  | dnl GNU_MAKE_JOBSERVER | 
|  | dnl | 
|  | dnl Implement a workaround for GNU mak jobserver by adding the '+' to the | 
|  | dnl recipe line in Makefiles generated by automake. | 
|  | dnl | 
|  | AC_DEFUN([GNU_MAKE_JOBSERVER],[dnl | 
|  | m4_pattern_allow(AM_V_CCLD) | 
|  | touch config.status.tmp | 
|  | dnl Must keep the same timestamps on config.status and Makefile. | 
|  | if touch --reference=config.status config.status.tmp > /dev/null 2>&1; then | 
|  | sed '/as_fn_exit 0/i \ | 
|  | sed -e \"s/^\t\\\(\\\$(AM_V_CCLD)\\\)/\t+ \\\1/\" Makefile > Makefile.tmp \ | 
|  | touch --reference=Makefile Makefile.tmp \ | 
|  | mv Makefile.tmp Makefile \ | 
|  | ' config.status > config.status.tmp | 
|  | touch --reference=config.status config.status.tmp | 
|  | mv config.status.tmp config.status | 
|  | chmod +x config.status | 
|  | sed -e "s/^\t\(\$(AM_V_CCLD)\)/\t+ \1/" Makefile > Makefile.tmp | 
|  | touch --reference=Makefile Makefile.tmp | 
|  | mv Makefile.tmp Makefile | 
|  | else | 
|  | rm -f config.status.tmp | 
|  | fi]) |