List it as a built source in order to force make to create it before compilation. Otherwise, a parallel make can end up attempting to compile the output of lex before yacc has finished generating its own output: $ make -j17 [...] YACC read_config_yy.c LEX read_config_lex.c CC stack.o CC resync.o CC cthelper.o CC helpers.o CC utils.o CC expect.o CC systemd.o CC nfct.o CC nfct-extensions/helper.o CC nfct-extensions/timeout.o CC read_config_lex.o read_config_lex.l:25:10: fatal error: read_config_yy.h: No such file or directory 25 | #include "read_config_yy.h" | ^~~~~~~~~~~~~~~~~~ compilation terminated. make[2]: *** [Makefile:701: read_config_lex.o] Error 1 make[2]: *** Waiting for unfinished jobs.... updating read_config_yy.h make[2]: Leaving directory '/space/azazel/work/git/netfilter/conntrack-tools/src' make[1]: *** [Makefile:743: all-recursive] Error 1 make[1]: Leaving directory '/space/azazel/work/git/netfilter/conntrack-tools/src' make: *** [Makefile:541: all-recursive] Error 1 Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx> --- src/Makefile.am | 1 + 1 file changed, 1 insertion(+) diff --git a/src/Makefile.am b/src/Makefile.am index 85ea18888e97..1f234749d35d 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -6,6 +6,7 @@ endif AM_YFLAGS = -d +BUILT_SOURCES = read_config_yy.h MAINTAINERCLEANFILES = read_config_yy.c read_config_yy.h read_config_lex.c sbin_PROGRAMS = conntrack conntrackd nfct -- 2.33.0
