Exuberant Ctags before that version (release in 2006) could fail to create TAGS files when no files are supplied, despite any '--etags-include' option. This required the addition of a workaround ...
* lib/am/tags.am (tags-am): ... here, which can now be removed. Signed-off-by: Stefano Lattarini <stefano.lattar...@gmail.com> --- lib/am/tags.am | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/lib/am/tags.am b/lib/am/tags.am index ad4e8ba..1d0d1ed 100644 --- a/lib/am/tags.am +++ b/lib/am/tags.am @@ -47,17 +47,12 @@ tags-am: $(TAGS_DEPENDENCIES) $(am.tags.files) ## We use the positional parameters to build the subdir list with ## absolute names, without the need to worry about white space in `pwd`. set x; \ -## Exuberant Ctags wants --etags-include, -## GNU Etags --include -## Furthermore Exuberant Ctags 5.5.4 fails to create TAGS files -## when no files are supplied, despite any --etags-include option. -## A workaround is to pass '.' as a file. This is what $empty_fix is for. +## Exuberant Ctags wants --etags-include. +## GNU Etags wants --include. ?SUBDIRS? if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \ ?SUBDIRS? include_option=--etags-include; \ -?SUBDIRS? empty_fix=.; \ ?SUBDIRS? else \ ?SUBDIRS? include_option=--include; \ -?SUBDIRS? empty_fix=; \ ?SUBDIRS? fi; \ ?SUBDIRS? list='$(SUBDIRS)'; for subdir in $$list; do \ ## Do nothing if we're trying to look in '.'. @@ -70,12 +65,10 @@ tags-am: $(TAGS_DEPENDENCIES) $(am.tags.files) ## Remove the 'x' we added first: shift; \ ## Make sure we have something to run etags on. - unique='$(am.tags.files.unique)'; \ - if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \ - test -n "$$unique" || unique=$$empty_fix; \ + test -n "$(ETAGS_ARGS)$$*$(am.tags.files.unique)" || { \ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ - ${1+"$$@"} $$unique; \ - fi + ${1+"$$@"} $(am.tags.files.unique); \ + } ## --------------- ## -- 1.7.12.rc0